JP2008294839A - Digital broadcast receiving system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiving system which allows a user to view a desired program even if a broadcasting area changes by movement. <P>SOLUTION: The digital broadcast receiving system is provided with: a broadcasting area storage part 14 which stores broadcasting areas; an affiliate station storage part 15 which stores affiliate stations; a mobile object information acquisition means 11 for acquiring mobile object information; a digital broadcast receiver 12 which stores a reserved program; a reach point prediction part 13 which predicts a point where the digital broadcast receiving system reaches a broadcast starting time of the reserved program in response to program reservation by the digital broadcast receiver; and a broadcasting area determination part 16 which acquires a broadcasting area to which the predicted point belongs from the broadcasting area storage part, when the acquired broadcasting area is different from a broadcasting area at a point when the program is reserved, acquires an affiliate station of a broadcasting station which broadcasts the reserved program existing in the acquired broadcasting area from the affiliate station storage part and changes the reserved program stored in the digital broadcast receiver to a program whose broadcasting is started at the same time as that of the reserved program in the affiliate station. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving system applied to a mobile body, and more particularly to a technique for reserving a program.

  In recent years, digitalization of television broadcasting has been rapidly progressing, and as of December 2006, digital television broadcasting has been started in the prefectural offices of all prefectures. Along with the digitization of television broadcasts, products with digital broadcast receivers mounted on mobile objects such as vehicles or mobile phones have been developed. Users can enjoy television broadcasts even when they are moving, and are useful. It is possible to obtain information.

  In such a mobile object, particularly a digital broadcast receiver mounted on a vehicle, a point where a program is reserved and a point where the reserved program is reached when broadcasting of the reserved program exists in different broadcast areas. In this case, there arises a problem that the reserved program cannot be received.

  In order to solve such a problem, Patent Document 1 discloses a mobile broadcast receiving apparatus that can avoid a situation where reception of broadcast contents is not completed before the end of movement. In the technique disclosed in Patent Document 1, a digital broadcast receiver is connected to a navigation system, acquires an estimated arrival time estimated by the navigation system as a scheduled movement time of a mobile object, Are compared to determine whether or not viewing of the reserved program can be completed. If not, an alternative broadcast program to be broadcast in another time zone is reserved.

JP 2001-168743 A

  In the technique disclosed in Patent Document 1 described above, when viewing of the reserved program cannot be completed, an alternative broadcast program to be broadcast in another time zone is reserved, so the program is reserved at the broadcast start time of the alternative broadcast program. The user may not be in the vehicle. Therefore, there is a problem that the user's request to view the reserved program while riding in the vehicle cannot be met.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a digital broadcast receiving system that allows a user to view a desired program even if the broadcast area changes due to movement.

  In order to solve the above-described problem, a digital broadcast receiving system according to the present invention includes a broadcast area storage unit that stores a broadcast area that represents a range in which a broadcast from a broadcast station reaches, and a broadcast station that is in an affiliated relationship with each other. A mobile station information storage means for acquiring mobile body information including map data representing a map and speed data representing a moving speed, and a digital broadcast receiver for storing a reserved program as a reserved program And a point at which the broadcast start time of the reserved program acquired from the digital broadcast receiver is reached in response to the program being reserved in the digital broadcast receiver based on the mobile information from the mobile information acquisition means. A destination area prediction unit to be predicted and a broadcast area to which a point predicted by the destination point prediction unit belongs are acquired from the broadcast area storage unit, and the acquired broadcast area is Is different from the broadcast area at the time of reservation, the affiliated station of the broadcast station that broadcasts the reserved program existing in the acquired broadcast area is acquired from the affiliated station storage unit and stored in the digital broadcast receiver. A broadcast area determining unit that changes the program to a program that starts broadcasting at the same time as the reserved program in the affiliated station.

  According to the digital broadcast receiving system of the present invention, the broadcast start time of the reserved program is reached when the broadcast area to which the point reaching the broadcast start time of the reserved program belongs is different from the broadcast area at the time when the program is reserved. In the affiliated station existing in the broadcasting area to which the point to be played is configured so that the program that starts broadcasting at the same time as the reserved program is a new reserved program, in many cases the affiliated station displays the same program in the same time zone Therefore, even if the broadcast area changes due to movement, the user can watch a desired program. As a result, it is possible to reduce the occurrence of a situation where the reserved program cannot be received during cross-border driving.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a digital broadcast receiving system according to Embodiment 1 of the present invention. This digital broadcast receiving system includes a navigation system 11, a digital broadcast receiver 12, an arrival point prediction unit 13, a broadcast area storage unit 14, an affiliated station storage unit 15, and a broadcast area determination unit 16.

  The navigation system 11 searches for a route from the current location to the destination input by the user, guides the user along the searched route, and arrives at the destination when the searched route is used. Predict. Since the configuration and functions of the navigation system 11 are well known and will not be described in detail, the navigation system 11 in the digital broadcast receiving system according to the first embodiment has a map representing a map held therein. The moving body information including the data and the vehicle speed data representing the moving speed is sent to the arrival point prediction unit 13. In addition, the navigation system 11 sends the predicted arrival time to the destination to the arrival point prediction unit 13.

  The digital broadcast receiver 12 receives the digital broadcast and provides video and audio to the user. Since the configuration and functions of the digital broadcast receiver 12 are well known and will not be described in detail, the digital broadcast receiver 12 according to the first embodiment starts broadcasting a reserved program representing a program reserved by the user. The time is sent to the arrival point prediction unit 13 and the broadcast area determination unit 16, and information representing the broadcast station that broadcasts the reserved program is sent to the broadcast area determination unit 16.

  The arrival point prediction unit 13 determines the point at which the vehicle reaches the broadcast start time of the reserved program sent from the digital broadcast receiver 12, the map data and the vehicle speed data sent from the navigation system 11 as moving body information, Is sent to the broadcast area determination unit 16 as an expected arrival point at the broadcast start time of the reserved program.

  The broadcast area storage unit 14 stores broadcast areas of a plurality of broadcast stations. The broadcast area refers to a range where broadcasts from broadcast stations can reach. The broadcast area stored in the broadcast area storage unit 14 is read by the broadcast area determination unit 16.

  The affiliated station storage unit 15 stores broadcast stations that are affiliated with each other as affiliated stations. The affiliated stations stored in the affiliated station storage unit 15 are read out by the broadcast area determining unit 16.

  The broadcast area determination unit 16 reads the broadcast area to which the predicted arrival point sent from the arrival point prediction unit 13 belongs from the broadcast area storage unit 14, and the read broadcast area is the broadcast area at the time when the program is reserved. Check for differences. Then, when it is determined that they are different, the affiliated station of the broadcast station that broadcasts the reserved program is read out from the affiliated station storage unit 15 from the broadcast stations existing in the broadcast area read out from the broadcast area storage unit 14, and digital broadcast The reserved program stored in the receiver 12 is changed to a program that starts broadcasting at the same time as the reserved program in the affiliated station read from the affiliated station storage unit 15.

  Next, the operation of the digital broadcast receiving system according to Embodiment 1 of the present invention configured as described above will be described with reference to the flowchart shown in FIG.

  The reserved program changing process is started in response to the program being reserved in the digital broadcast receiver 12 with the destination set, and the reserved program is stored in the digital broadcast receiver 12. When a new destination is input in the navigation system 11 in a state where the navigation system 11 is present, or when the reserved program is stored in the digital broadcast receiver 12, the arrival time at the destination predicted in the navigation system 11 has changed. It is started in response to a change in the vehicle driving situation.

  In the reserved program change process, first, a number n (hereinafter referred to as “reserved program n”) assigned to the reserved program is initialized to “1” (step ST11). Next, it is checked whether or not the reserved program n exists (step ST12). If it is determined in step ST12 that the reserved program n does not exist, the reserved program change process ends.

  On the other hand, if it is determined in step ST12 that the reserved program n exists, it is then checked whether or not the destination is set (step ST13). That is, the navigation system 11 checks whether a destination is set and a route search is performed, that is, whether a route from the current location to the destination is obtained.

  If it is determined in step ST13 that the destination exists, it is then checked whether the broadcast area of the reserved program n has changed (step ST14). That is, it is checked whether the broadcast area to which the predicted arrival point at the broadcast start time of the reserved program n belongs is different from the broadcast area at the time when the program is reserved. Specifically, the arrival point prediction unit 13 is a map that is sent from the navigation system 11 as mobile body information on a route that reaches the broadcast start time of the reserved program sent from the digital broadcast receiver 12. Data and vehicle speed data are used for prediction, and the predicted arrival point is sent to the broadcast area determination unit 16. The broadcast area determination unit 16 reads the broadcast area to which the predicted arrival point sent from the arrival point prediction unit 13 belongs from the broadcast area storage unit 14, and the read broadcast area is the broadcast area at the time when the program is reserved. Check for differences.

  If it is determined in step ST14 that the broadcast area of reserved program n has changed, then the broadcast station of reserved program n is changed to an affiliated station (step ST15). Specifically, the broadcast area determination unit 16 reads from the affiliated station storage unit 15 the affiliated station of the broadcast station that broadcasts the reserved program from among the broadcast stations present in the broadcast area read from the broadcast area storage unit 14. Then, the reserved program stored in the digital broadcast receiver 12 is changed to a program that starts broadcasting at the same time as the reserved program at the affiliated station read from the affiliated station storage unit 15.

  On the other hand, if it is determined in step ST14 that the broadcast area of the reserved program n has not changed, the process of step ST15 is skipped. Next, the reserved program n is incremented (+1) (step ST16). Thereafter, the sequence returns to step ST12, and the above-described processing is repeated.

  If it is determined in step ST13 that the destination does not exist, it is recognized that a route from the current location to the destination has not been obtained, and it is impossible to calculate the predicted arrival point, and the sequence is step ST17. Proceed to In step ST17, it is checked whether or not it is a predetermined time before the broadcast start time of the reserved program (step ST17). That is, the broadcast area determination unit 16 checks whether it is a predetermined time before the broadcast start time of the reserved program sent from the digital broadcast receiver 12.

  If it is determined in step ST17 that it is not a predetermined time before the broadcast start time of the reserved program, a standby state is entered while step ST17 is repeatedly executed. If it is determined that the predetermined time before the broadcast start time of the reserved program is reached in the standby state due to the repeated execution of step ST17, then it is checked whether the current location is within the broadcast area of the reserved program n ( Step ST18). That is, the broadcast area determination unit 16 acquires the broadcast area to which the current point belongs from the broadcast area storage unit, and checks whether the acquired broadcast area is different from the broadcast area at the time when the program is reserved.

  If it is determined in step ST18 that the current location is within the broadcast area of reserved program n, then the broadcast station of reserved program n is changed to an affiliated station (step ST19). The process in step ST19 is the same as the process in step ST15 described above. Thereafter, the reserved program change process ends. If it is determined in step ST18 that the current location is not within the broadcast area of the reserved program n, the reserved program change process ends.

  Next, functions realized by the reserved program change process performed in the digital broadcast receiving system having the above-described configuration will be described with reference to a specific example shown in FIG.

  Now, suppose that at the current point A in the broadcast area 1, the user starts moving toward the destination B after reserving a program that starts at an arbitrary time (for example, 14:00) at the broadcast station α. . If the predicted arrival point C at the broadcast start time of the reserved program is a point in the broadcast area 1, the program reserved by the user can be received.

  However, as shown in FIG. 3, when the predicted arrival point C at the broadcast start time of the reserved program is a point in the broadcast area 2 away from the broadcast area 1, the program reserved by the user cannot be received. As described above, in the conventional digital broadcast receiver, there is a problem that the reserved program cannot be received when moving between the broadcasting areas.

  On the other hand, according to the digital broadcast receiving system according to Embodiment 1 of the present invention, if the point where the program is reserved and the expected arrival point at the broadcast start time of the reserved program are different broadcast areas, the destination Reservation is changed to a program that starts broadcasting at the same time in the affiliated station β of the broadcast station α existing in the broadcast area (broadcast area 2). Thereby, the problem in the conventional digital broadcast receiver mentioned above is eliminated.

  As described above, according to the digital broadcast receiving system according to Embodiment 1 of the present invention, the broadcast area to which the point on the route that reaches the broadcast start time of the reserved program belongs is broadcasted when the program is reserved. Since the program that starts broadcasting at the same time as the reserved program is configured as a new reserved program in the affiliated station that exists in the broadcast area to which the point that reaches the broadcast start time of the reserved program belongs when it is different from the area In many cases, the affiliated station broadcasts the same program in the same time zone, so that even if the broadcast area changes due to movement, the user can watch the desired program. As a result, it is possible to reduce the occurrence of a situation where the reserved program cannot be received during cross-border driving.

  If the destination does not exist, that is, if the route from the current location to the destination is not obtained, the program is reserved in the broadcast area to which the current location belongs before the predetermined program broadcast start time. If it is determined that the broadcast area is different from the current broadcast area, the reserved program stored in the digital broadcast receiver 12 is changed to a program that starts broadcasting at the same time as the reserved program in the affiliated station. Even if the route from the current location to the destination is not obtained, the user can view the desired program.

Embodiment 2. FIG.
FIG. 4 is a block diagram showing a configuration of a digital broadcast receiving system according to Embodiment 2 of the present invention. As in the first embodiment, this digital broadcast receiving system includes a navigation system 11, a digital broadcast receiver 12, a destination prediction unit 13, a broadcast area storage unit 14, an affiliated station storage unit 15, and a broadcast area determination unit 16. ing.

  The second embodiment is characterized in that the information in the broadcast area storage unit is appropriately updated according to the reception availability state of the digital broadcast receiver. Other configurations and operations are the same as those in the first embodiment.

  By having the above characteristics, the information in the broadcast area storage unit can be kept up-to-date, so that the accuracy of the broadcast area determination can be increased and the reserved program cannot be received during cross-border travel. Generation can be further reduced.

  In the digital broadcast receiving system according to Embodiments 1 and 2 described above, when it is determined that the broadcast area of the reserved program has changed, the broadcast station of the reserved program is automatically changed to an affiliated station. However, it can be configured to notify the user that the broadcast area of the reserved program has changed. In this case, the user changes the broadcast station of the reserved program to an affiliated station by manual operation.

  In the digital broadcast receiving system according to the first and second embodiments described above, the arrival point prediction unit 13, the broadcast area storage unit 14, the affiliated station storage unit 15, and the broadcast area determination unit 16 are the navigation system 11 and the digital broadcast. Although configured to be provided outside the receiver 12, these components may be configured to be incorporated inside the navigation system 11 or the digital broadcast receiver 12.

  Furthermore, in the digital broadcast receiving system according to the first and second embodiments described above, the navigation system 11 is used as the acquisition destination of the mobile body information. However, the acquisition destination of the mobile body information is not limited to the navigation system 11, for example, a mobile phone A portable terminal that is provided with map data such as a telephone, a PDA (Personal Digital Assistant), and a personal computer and that can output a moving speed can also be used.

It is a block diagram which shows the structure of the digital broadcast receiving system which concerns on Embodiment 1 of this invention. It is a flowchart for demonstrating operation | movement of the digital broadcast receiving system which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the specific operation | movement of the digital broadcast receiving system which concerns on Embodiment 1 of this invention compared with the operation | movement of the conventional digital broadcast receiver. It is a block diagram which shows the structure of the digital broadcast receiving system which concerns on Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 Navigation system, 12 Digital broadcast receiver, 13 Arrival point estimation part, 14 Broadcast area memory | storage part, 15 Affiliate station memory | storage part, 16 Broadcast area determination part.

Claims (5)

A broadcast area storage unit that stores a broadcast area representing a range in which a broadcast from a broadcast station reaches;
An affiliated station storage unit that stores broadcast stations that are affiliated with each other as affiliated stations,
Mobile object information acquisition means for acquiring mobile object information including map data representing a map and speed data representing a moving speed;
A digital broadcast receiver for storing reserved programs as reserved programs;
Based on the mobile body information from the mobile body information acquisition means, the point reaching the broadcast start time of the reserved program acquired from the digital broadcast receiver in response to the program being reserved in the digital broadcast receiver. The arrival point prediction part to be predicted,
The broadcast area to which the point predicted by the arrival point prediction unit belongs is acquired from the broadcast area storage unit, and the acquired broadcast area is different from the broadcast area at the time when the program is reserved The affiliated station of the broadcasting station that broadcasts the reserved program existing in the affiliated station is acquired from the affiliated station storage unit, and the reserved program stored in the digital broadcast receiver is broadcast at the same time as the reserved program in the affiliated station. A digital broadcast receiving system comprising a broadcast area determination unit for changing to a program to be started. The mobile body information acquisition means comprises a navigation system that searches for a route from the current location to the destination.
The arrival point predicting unit, in a state where the reserved program is stored in the digital broadcast receiver, in response to the input of a new destination in the navigation system, the reserved program obtained from the digital broadcast receiver 2. The digital broadcast receiving system according to claim 1, wherein a point on the route reaching the broadcast start time is predicted based on mobile body information from mobile body information acquisition means. The mobile body information acquisition means comprises a navigation system that searches for a route from the current location to the destination and predicts the arrival time when using the searched route,
The arrival point prediction unit is acquired from the digital broadcast receiver in response to a change in the arrival time predicted by the navigation system in a state where the reserved program is stored in the digital broadcast receiver. 2. The digital broadcast receiving system according to claim 1, wherein a point on the route reaching the broadcast start time of the reserved program is predicted based on mobile information from the mobile information acquisition means. The broadcast area determination unit acquires the broadcast area to which the current location belongs from the broadcast area storage unit a predetermined time before the broadcast start time of the reserved program, and the acquired broadcast area is the broadcast area at the time when the program is reserved The affiliated station of the broadcasting station that broadcasts the reserved program existing in the acquired broadcast area is acquired from the affiliated station storage unit, and the reserved program stored in the digital broadcast receiver is obtained at the affiliated station. The digital broadcast receiving system according to any one of claims 1 to 3, wherein the program is changed to a program that starts broadcasting at the same time as the reserved program.   The digital broadcast receiving system according to any one of claims 1 to 4, wherein the broadcast area storage unit is appropriately updated depending on whether or not the digital broadcast receiver can receive the broadcast area.

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