JP2006014048A - Broadcast receiver and navigator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver and a navigator which enable a user to continue to listen to the same program even listening to it during moving. <P>SOLUTION: The receiver comprises an EPG memory means 4 for storing a program table showing programs and time zones corresponding to the programs, a memory means 6 for storing receivable areas showing where programs broadcast from broadcast stations are receivable, a receiving means 2 for receiving the programs broadcast from the broadcast stations, and a navigating means 9 for retrieving or guiding to a destination. When the navigating means 9 decides that the user moves out of the receivable area of a broadcast station during receiving, the receiving means 2 switches the broadcast station during receiving to the other broadcast station broadcasting the same program as that being received. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a broadcast receiving apparatus that is mounted on a mobile body and receives a program broadcast from a broadcast station, and relates to a navigation apparatus that guides a user by searching for a route to a destination.

  FIG. 4 is a block diagram showing an example of a system configuration of a conventional navigation apparatus. As shown in FIG. 4, the conventional navigation apparatus is mounted on a vehicle. The navigation device converts an antenna 10 that receives a signal used for terrestrial digital broadcasting, and a video signal that represents video, an audio signal that represents audio, and a data signal that represents data from the terrestrial digital signal received by the antenna 10. Digital broadcast receiving means 11 for demodulating, data EPG storage means 12 for storing data such as demodulated electronic program guide (hereinafter referred to as EPG), control means 13 for controlling the digital broadcast receiving means 11, and each region There is a regional-specific broadcast station storage means 14 in which channel information representing a channel corresponding to the broadcast station is stored.

  Further, the conventional navigation device includes a GPS antenna 15 that receives a signal transmitted from a GPS satellite, a position processing means 16 that measures the position of the broadcast receiving device based on the GPS signal received by the GPS antenna 15, and a map. And navigation means 17 for searching or guiding to the destination.

  The operation of the conventional navigation device will be described. The signal received by the antenna 10 is demodulated into a video signal, an audio signal, and a data signal by the digital broadcast receiving means 11. The EPG data included in the data signal is associated with the position information indicating the position obtained from the position processing means 16 and the data indicating the area of the broadcasting station specified from the regional broadcasting station storage means 14, and data EPG. It is stored in the storage means 12. The user can view the list of programs that can be viewed at present by retrieving the EPG data from the data EPG storage means 12 via the control means 13 and displaying it. Here, the user selects and watches a program that the receivable broadcasting station wants to watch from the program list.

Further, as a conventional broadcast receiving apparatus, when a broadcast station search instruction is given, information on a plurality of receivable terrestrial digital broadcast waves and channel information corresponding to each broadcast station are searched, and a region name And a channel number are displayed for each region (for example, see Patent Document 1).
JP 2003-125303 A (paragraphs 23-24, FIG. 3)

  However, in the conventional navigation device described above, when a user is watching a program, if the vehicle moves outside the receivable area of the broadcasting station that broadcasts the current program, the program that was being viewed is interrupted. Thus, in order to view the same program, there is a problem that it is time consuming for the user to display the program list related to the broadcasting station in the destination area and view the program again. In addition, there is a problem that it is difficult to find when the same program is broadcast on a broadcast station other than the affiliated broadcast station.

  The present invention has been made to solve such a conventional problem, and provides a broadcast receiving apparatus and a navigation apparatus capable of continuing to watch the same program even when the user is watching the program while moving. The purpose is to do.

  The broadcast receiving apparatus of the present invention stores a storage means for storing a program and a program table showing a time zone corresponding to the program, and a storage for storing a receivable area representing a receivable area of a broadcasting station that broadcasts the program. Means, position detecting means for detecting the current position, and receiving the program broadcast from the broadcasting station, and determining that the current position has moved out of the receivable area of the receiving broadcasting station. Broadcast receiving means for searching other broadcast stations that are broadcasting the same program as the program broadcast from the broadcast station from the program table and switching reception.

  Use this configuration to switch to another broadcast station that is broadcasting the same program as the program being broadcast from the receiving broadcast station when it is determined that it has moved outside the receivable area of the receiving broadcast station. Even if a person is watching a program while moving, the user can continue to watch the same program.

  The broadcast receiving apparatus of the present invention further includes navigation means for guiding a user by searching for a route to a destination, and the navigation means broadcasts a program selected by the user from the program guide. It has a configuration for searching for a route to the destination with priority given to the receivable area of the station.

  With this configuration, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts the program selected by the user from the program guide, so it is possible to reduce the number of times that the user cannot go through the area that cannot be viewed and continue the program. You can watch it.

  Further, in the broadcast receiving apparatus of the present invention, when the user selects a plurality of programs from the program guide, the navigation means is based on the broadcast time zones of the plurality of programs and the estimated arrival time to the destination. Thus, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts each program selected by the user.

  With this configuration, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts each program selected by the user based on the broadcast time zones of multiple programs and the scheduled arrival time to the destination. Therefore, it is possible to continue watching a plurality of programs.

  Furthermore, the broadcast receiving device of the present invention is configured such that when the estimated arrival time changes after the time point when the plurality of programs are selected, the navigation means is a broadcasting station that broadcasts each program selected by the user. It has a configuration in which a route to the destination is searched again by giving priority to the receivable area.

  With this configuration, when the estimated arrival time changes after a plurality of programs have been selected, the route to the destination is given priority again by giving priority to the receivable area of the broadcast station that broadcasts each program selected by the user. Since the search is performed, it is possible to continue watching the program without being affected by the estimated arrival time.

  Further, in the broadcast receiving apparatus of the present invention, when the user selects a program broadcast after the time when the program broadcast from the receiving broadcast station ends, the navigation means includes the user Is configured to search for a route to the destination again, giving priority to the receivable area of the broadcasting station that broadcasts the program selected by the.

  This configuration gives priority to the receivable area of the broadcast station that broadcasts the program selected by the user when the user selects a program that is broadcast after the time when the program broadcast from the broadcast station being received ends. Since the route to the destination is searched again, the user can continue to watch the selected program even if the user selects another program while watching the program.

  The broadcast receiving apparatus of the present invention stores a storage means for storing a program and a program table showing a time zone corresponding to the program, and a storage for storing a receivable area representing a receivable area of a broadcasting station that broadcasts the program. Means, a position input means for inputting a current position, and a program broadcast from a broadcasting station, and when the current position is determined to have moved out of the receivable area of the receiving broadcasting station, Broadcast receiving means for searching other broadcast stations that are broadcasting the same program as the program broadcast from the broadcast station from the program table and switching reception.

  Use this configuration to switch to another broadcast station that is broadcasting the same program as the program being broadcast from the receiving broadcast station when it is determined that it has moved outside the receivable area of the receiving broadcast station. Even if a person is watching a program while moving, the user can continue to watch the same program.

  The broadcast receiving apparatus of the present invention further includes navigation means for guiding a user by searching for a route to a destination, and the navigation means broadcasts a program selected by the user from the program guide. It has a configuration for searching for a route to the destination with priority given to the receivable area of the station.

  With this configuration, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts the program selected by the user from the program guide, so it is possible to reduce the number of times that the user cannot go through the area that cannot be viewed and continue the program. You can watch it.

  Further, in the broadcast receiving apparatus of the present invention, when the user selects a plurality of programs from the program guide, the navigation means is based on the broadcast time zones of the plurality of programs and the estimated arrival time to the destination. Thus, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts each program selected by the user.

  With this configuration, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts each program selected by the user based on the broadcast time zones of multiple programs and the scheduled arrival time to the destination. Therefore, it is possible to continue watching a plurality of programs.

  Furthermore, the broadcast receiving device of the present invention is configured such that when the estimated arrival time changes after the time point when the plurality of programs are selected, the navigation means is a broadcasting station that broadcasts each program selected by the user. It has a configuration in which a route to the destination is searched again by giving priority to the receivable area.

  With this configuration, when the estimated arrival time changes after a plurality of programs have been selected, the route to the destination is given priority again by giving priority to the receivable area of the broadcast station that broadcasts each program selected by the user. Since the search is performed, it is possible to continue watching the program without being affected by the estimated arrival time.

  Further, in the broadcast receiving apparatus of the present invention, when the user selects a program broadcast after the time when the program broadcast from the receiving broadcast station ends, the navigation means includes the user Is configured to search for a route to the destination again, giving priority to the receivable area of the broadcasting station that broadcasts the program selected by the.

  This configuration gives priority to the receivable area of the broadcast station that broadcasts the program selected by the user when the user selects a program that is broadcast after the time when the program broadcast from the broadcast station being received ends. Since the route to the destination is searched again, the user can continue to watch the selected program even if the user selects another program while watching the program.

  The navigation apparatus of the present invention stores a storage means for storing a program and a program table showing a time zone corresponding to the program, and a storage means for storing a receivable area representing a receivable area of a broadcasting station that broadcasts the program. And position detecting means for detecting the current position, navigation means for searching the route to the destination and guiding the user, and determining that the current position has moved outside the receivable area of the receiving broadcast station. A receiving broadcast station selecting means for selecting from the program table another broadcast station that is broadcasting the same program as the program broadcast from the receiving broadcast station.

  Use this configuration to switch to another broadcast station that is broadcasting the same program as the program being broadcast from the receiving broadcast station when it is determined that it has moved outside the receivable area of the receiving broadcast station. Even if a person is watching a program while moving, the user can continue to watch the same program.

  Further, the navigation device of the present invention has a configuration in which the navigation means searches for a route to the destination by giving priority to a receivable area of a broadcasting station that broadcasts a program selected by the user from the program guide. is doing.

  With this configuration, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts the program selected by the user from the program guide, so it is possible to reduce the number of times that the user cannot go through the area that cannot be viewed and continue the program. You can watch it.

  Further, in the navigation device of the present invention, when the user selects a plurality of programs from the program table, the navigation means is based on the broadcast time zones of the plurality of programs and the estimated arrival time to the destination. It has a configuration in which a route to the destination is searched with priority given to a receivable area of a broadcasting station that broadcasts each program selected by the user.

  With this configuration, the route to the destination is searched with priority given to the receivable area of the broadcasting station that broadcasts each program selected by the user based on the broadcast time zones of multiple programs and the scheduled arrival time to the destination. Therefore, it is possible to continue watching a plurality of programs.

  Further, in the navigation device of the present invention, when the estimated arrival time changes after the time point when the plurality of programs are selected, the navigation means receives a broadcast station that broadcasts each program selected by the user. It has a configuration in which a route to the destination is searched again with priority on the possible area.

  With this configuration, when the estimated arrival time changes after a plurality of programs have been selected, the route to the destination is given priority again by giving priority to the receivable area of the broadcast station that broadcasts each program selected by the user. Since the search is performed, it is possible to continue watching the program without being affected by the estimated arrival time.

  Furthermore, the navigation device of the present invention is configured such that when the user selects a program broadcast after the time when the program broadcast from the receiving broadcast station ends, the navigation means It has a configuration in which a route to the destination is searched again by giving priority to the receivable area of the broadcasting station that broadcasts the selected program.

  This configuration gives priority to the receivable area of the broadcast station that broadcasts the program selected by the user when the user selects a program that is broadcast after the time when the program broadcast from the broadcast station being received ends. Since the route to the destination is searched again, the user can continue to watch the selected program even if the user selects another program while watching the program.

  The present invention provides a broadcast receiving apparatus and a navigation apparatus capable of continuing to watch a desired program even if the user is watching the program while moving.

  Hereinafter, a broadcast receiving apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  A block diagram of a broadcast receiving apparatus according to an embodiment of the present invention is shown in FIG. A broadcast receiving apparatus according to an embodiment of the present invention is mounted on a moving body such as a vehicle. The moving body may be any moving object such as an automobile or a bus.

  The broadcast receiving apparatus stores an EPG storage unit 4 for storing an EPG indicating a program and a time zone corresponding to the program, and a broadcast station-specific area for storing a receivable area representing a receivable area of a broadcast station that broadcasts the program. The storage means 6, the antenna 1 for receiving a terrestrial digital signal used for terrestrial digital broadcasting, the video signal representing video from the digital terrestrial signal received from the antenna 1, the audio signal representing audio, and the data are represented. It is demodulated to a data signal, etc., receives a program broadcast from a broadcast station, and when it is determined that the current position has moved outside the receivable area of the receiving broadcast station, it is broadcast from the receiving broadcast station The broadcast receiving means 2 for searching other broadcast stations broadcasting the same program as the program from the EPG and switching the reception, and the data demodulated by the broadcast receiving means 2 are recorded. Data storage means 3 for receiving, a GPS antenna 7 for receiving a signal transmitted from a GPS satellite, a position detecting means 8 for detecting the current position of the broadcast receiving device based on the GPS signal received by the GPS antenna 7, and a map Is displayed, and a navigation means 9 for guiding a user by searching for a route to the destination and a control means 5 for controlling the broadcast receiving apparatus are provided.

  The EPG storage means 4 stores an EPG obtained via an SD memory card (Secure Digital memory card) or a network. The broadcast station-specific area storage means 6 may store an electric field map in which a broadcast frequency and a map for each broadcast station are associated with each other instead of the receivable area.

  The operation of the broadcast receiving apparatus according to the embodiment of the present invention will be described below with reference to the drawings.

  The terrestrial digital signal received by the antenna 1 is demodulated into a video signal, an audio signal, and a data signal by the broadcast receiving means 2. The data signal is stored in the data storage means 3.

  When the user selects one program and a destination and the route search to the destination is started by the navigation means 9 during the reception of the program, the program data representing the currently received program, or Broadcast station data representing a broadcast station broadcasting this program is transferred from the data storage means 3 to the broadcast station area storage means 6 by the control means 5 and stored therein. The broadcast station data that is broadcasting the program and all receivable areas of the broadcast station are transferred from the broadcast station area storage means 6 to the navigation means 9 by the control means 5.

  When the navigation means 9 determines that it has moved out of the receivable area of the currently receiving broadcast station based on the position information indicating the position obtained from the position detection means 8 during guidance, the broadcast reception means 2 Switching to another broadcast station that is broadcasting the same program as the program being broadcast from the receiving broadcast station according to an instruction from the control means 5.

  Further, when the user directly selects a program from the EPG stored in the EPG storage means 4, the navigation means 9 is a broadcasting station that broadcasts the program selected by the user even when the user is currently outside the receivable area. The route to the destination is searched giving priority to the receivable area.

  More specifically, the navigation means 9 creates route search data that associates road network data relating to roads with receivable areas of broadcast stations. Further, when the user selects a broadcasting station that broadcasts the program that he / she wants to watch from the EPG, the navigation means 9 selects the road in the receivable area of the broadcasting station selected by the user based on the route search data. The route to the destination is searched in preference to the road outside the area where the signal can be received. For example, the navigation means 9 performs processing such as multiplying the cost of a road within the receivable area of the broadcasting station selected by the user by 0.8 times and increasing the cost of a road outside the receivable area by 1.2 times. The route search data is created, and an optimum route to the destination is obtained according to the created route search data. The road cost is an evaluation value used when obtaining an optimum route. The navigation means 9 searches for a route to the destination without giving priority to a road with a higher evaluation value, and searches for a route to the destination with priority for a road with a lower evaluation value. In this way, the route is determined so as to travel within the receivable area of the broadcast station during the broadcast time of the program. Note that the broadcast receiving apparatus can also perform a route search by correcting again the route to the originally searched destination according to the change of the program or the broadcasting station or the current time. Further, the route may be searched so that only the broadcast time zone of the program selected by the user passes through the receivable area of the broadcast station.

  Further, when the user selects a plurality of programs from the EPG, the navigation means 9 broadcasts each program selected by the user based on the broadcast time zones of the plurality of programs and the scheduled arrival time to the destination. The route may be searched with priority given to the receivable area of the broadcasting station. Note that the plurality of programs may have broadcast time zones that are broadcast, or may have different broadcast time zones.

  Further, after the time when a plurality of programs are selected, when the estimated arrival time changes due to the influence of road conditions such as traffic congestion, the navigation means 9 can receive the area of the broadcast station that broadcasts each program selected by the user. Alternatively, the route to the destination may be searched again with priority.

  When the user selects a program to be broadcast after the time when the program being broadcast from the currently receiving broadcast station ends, the navigation means 9 selects the broadcast station that broadcasts the program selected by the user. The receivable area may be prioritized and the route to the destination may be searched again based on the estimated arrival time and the estimated passage time.

  As described above, when the broadcast receiving apparatus according to the embodiment of the present invention determines that the broadcast receiving apparatus has moved out of the receivable area of the receiving broadcast station, it is the same as the program broadcast from the receiving broadcast station. Since switching to another broadcasting station that broadcasts the program, the user can continue to watch the same program even if the user is watching the program while moving.

  In addition, since the route to the destination is searched with priority given to the receivable area of the broadcast station that broadcasts the program selected by the user from the program guide, it is possible to reduce the number of times that the user cannot pass through the area that cannot be viewed and continue the program Can watch.

  In addition, in order to search for a route to a destination by giving priority to the receivable area of a broadcasting station that broadcasts each program selected by the user based on the broadcast time zones of multiple programs and the estimated arrival time to the destination , You can continue to watch multiple programs.

  Also, when the estimated arrival time changes after a plurality of programs are selected, the route to the destination is searched again with priority given to the receivable area of the broadcast station that broadcasts each program selected by the user. Therefore, it is possible to continue watching the program without being affected by the estimated arrival time.

  In addition, when the user selects a program that is broadcast after the time when the program being broadcast from the broadcast station being received ends, the receivable area of the broadcast station that broadcasts the program selected by the user is given priority. Since the route to the destination is searched again, even when the user selects another program while viewing the program, the selected program can be continuously viewed.

  The broadcast receiving apparatus shown in FIG. 1 is provided with position input means 18 for inputting the current position of the broadcast receiving apparatus as shown in FIG. You may implement this invention with the form provided with the means 18. FIG.

  In addition, the broadcast receiving apparatus shown in FIG. 1 does not include the broadcast receiving means 2 and the data storage means 3, and as shown in FIG. 3, the receiving broadcast station selecting means (for example, the control means 5) of the present invention The present invention may be implemented in the form of a navigation device in which another broadcast station that broadcasts the same program as the program broadcast from the receiving broadcast station is selected from the EPG. In other words, in the navigation device shown in FIG. 3, it is assumed that the navigation means 9 has moved out of the receivable area of the receiving broadcast station based on the position information indicating the position obtained from the position detection means 8. When the determination is made, the control means 5 selects another broadcast station that broadcasts the same program as the program broadcast from the receiving broadcast station, and receives the external broadcast so as to switch to the selected other broadcast station. Instruct the device. Further, the data EPG storage means 12 of the navigation apparatus shown in FIG. 3 is configured to store EPG data obtained from an external broadcast receiving apparatus.

  As described above, the broadcast receiving device and the navigation device according to the present invention have an effect that a user can continue to watch a desired program even when the user is watching the program while moving, and is installed in a mobile body. Therefore, it is useful as a broadcast receiving apparatus and a navigation apparatus that guide a user by searching for a route to a destination.

The block diagram of the broadcast receiver which concerns on embodiment of this invention The block diagram showing the other aspect of the broadcast receiver which concerns on embodiment of this invention The block diagram of the navigation apparatus concerning an embodiment of the invention A block diagram showing an example of a system configuration of a conventional navigation system

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 10 Antenna 2 Broadcast receiving means 3 Data storage means 4 EPG storage means 5, 13 Control means 6 Broadcast station area storage means 7, 15 GPS antenna 8 Position detecting means 9, 17 Navigation means 11 Digital broadcast receiving means 12 Data EPG Storage means 14 Regional broadcast station storage means 16 Position processing means 18 Position input means

Claims (15)

Storage means for storing a program and a program table showing a time zone corresponding to the program;
Storage means for storing a receivable area representing a receivable area of a broadcasting station that broadcasts the program;
Position detection means for detecting the current position;
When receiving a program broadcast from a broadcasting station and determining that the current position has moved outside the receivable area of the receiving broadcasting station, the same program as the program being broadcast from the receiving broadcasting station is received. A broadcast receiving apparatus comprising broadcast receiving means for searching other broadcast stations that are broadcasting from the program guide and switching reception. The broadcast receiving apparatus includes navigation means for guiding a user by searching for a route to a destination, and the navigation means can receive a broadcast station that broadcasts a program selected from the program guide by the user. The broadcast receiving apparatus according to claim 1, wherein a route to the destination is searched with priority on an area. When the user selects a plurality of programs from the program guide, the navigation means selects each program selected by the user based on a broadcast time zone of the plurality of programs and an estimated arrival time to the destination. 3. The broadcast receiving apparatus according to claim 2, wherein a route to the destination is searched with priority given to a receivable area of a broadcasting station that broadcasts. When the estimated arrival time changes after the plurality of programs are selected, the navigation means gives priority to the receivable area of the broadcasting station that broadcasts each program selected by the user again, and the purpose is 4. The broadcast receiving apparatus according to claim 3, wherein a route to the ground is searched. When the user selects a program to be broadcast after the time when the program being broadcast from the receiving broadcast station is over, the navigation means is a broadcast station that broadcasts the program selected by the user. The broadcast receiving apparatus according to claim 3, wherein a route to the destination is searched again with priority on a receivable area. Storage means for storing a program and a program table showing a time zone corresponding to the program;
Storage means for storing a receivable area representing a receivable area of a broadcasting station that broadcasts the program;
Position input means for inputting the current position;
When receiving a program broadcast from a broadcasting station and determining that the current position has moved outside the receivable area of the receiving broadcasting station, the same program as the program being broadcast from the receiving broadcasting station is received. A broadcast receiving apparatus comprising broadcast receiving means for searching other broadcast stations that are broadcasting from the program guide and switching reception. The broadcast receiving apparatus includes navigation means for guiding a user by searching for a route to a destination, and the navigation means can receive a broadcast station that broadcasts a program selected from the program guide by the user. The broadcast receiving apparatus according to claim 6, wherein a route to the destination is searched with priority on an area. When the user selects a plurality of programs from the program guide, the navigation means selects each program selected by the user based on a broadcast time zone of the plurality of programs and an estimated arrival time to the destination. The broadcast receiving apparatus according to claim 7, wherein a route to the destination is searched with priority given to a receivable area of a broadcasting station that broadcasts the broadcast. When the estimated arrival time changes after the plurality of programs are selected, the navigation means gives priority to the receivable area of the broadcasting station that broadcasts each program selected by the user again, and the purpose is The broadcast receiving apparatus according to claim 8, wherein a route to the ground is searched. When the user selects a program to be broadcast after the time when the program being broadcast from the receiving broadcast station is over, the navigation means is a broadcast station that broadcasts the program selected by the user. 9. The broadcast receiving apparatus according to claim 8, wherein a route to the destination is searched again with priority on a receivable area. Storage means for storing a program and a program table showing a time zone corresponding to the program;
Storage means for storing a receivable area representing a receivable area of a broadcasting station that broadcasts the program;
Position detection means for detecting the current position;
A navigation means for searching the route to the destination and guiding the user;
When it is determined that the current position has moved outside the receivable area of the receiving broadcast station, another program station that is broadcasting the same program as the program broadcast from the receiving broadcast station is displayed in the program table. A navigation apparatus, comprising: a receiving broadcast station selecting unit that selects from the above. 12. The navigation according to claim 11, wherein the navigation means searches for a route to the destination in preference to a receivable area of a broadcasting station that broadcasts a program selected by the user from the program guide. apparatus. When the user selects a plurality of programs from the program guide, the navigation means selects each program selected by the user based on a broadcast time zone of the plurality of programs and an estimated arrival time to the destination. 13. The navigation device according to claim 12, wherein a route to the destination is searched with priority given to a receivable area of a broadcasting station that broadcasts the broadcast. When the estimated arrival time changes after the plurality of programs are selected, the navigation means gives priority to the receivable area of the broadcasting station that broadcasts each program selected by the user again, and the purpose is The navigation device according to claim 13, wherein a route to the ground is searched. When the user selects a program to be broadcast after the time when the program being broadcast from the receiving broadcast station is over, the navigation means is a broadcast station that broadcasts the program selected by the user. 14. The navigation device according to claim 13, wherein a route to the destination is searched again with priority on a receivable area.

Images