JP5640903B2 - Portable receiver and broadcast receiving method - Google Patents

Description

  The present invention relates to a portable receiver capable of receiving a broadcast and a broadcast receiving method in the portable receiver.

  In digital terrestrial television broadcasting, so-called simulcasting is performed in which the same video content is broadcast at the same time in broadband broadcasting (hereinafter referred to as full-segment broadcasting or 12-segment broadcasting) and narrow-band broadcasting (hereinafter referred to as one-segment broadcasting). Yes. On the other hand, an area one-segment broadcasting demonstration experiment is being conducted in which unique video content different from full-segment broadcasting is broadcast only within a specific service area without performing simultaneous broadcasting. Area one seg broadcasting is assumed to be various from a small service area with a radius of several meters to a relatively large one with a radius of several tens to several hundred meters.

  In order for the user to receive the area one-segment broadcasting, it is necessary to acquire channel information of the broadcasting station of the area one-segment broadcasting. Patent Document 1 provides a broadcasting service including broadcast program introduction information and channel setting information of area one-segment broadcasting broadcast in the coverage area of the base station to a mobile station capable of receiving area one-segment broadcasting from a base station A technique for transmitting information is disclosed. When the user selects broadcast program introduction information displayed in text on the mobile station display, the mobile station can receive an area one-segment broadcast program based on the channel setting information.

JP 2010-166153 A

  When a plurality of broadcast waves can be received at the current position of the mobile terminal, it is convenient for the user of the mobile terminal to be able to confirm whether or not the area one-segment broadcasting can be continuously received even after moving from the location. In this case, as in the technique described in Patent Document 1, even if information such as a receivable range of a broadcast service is provided in text, the user can receive if the place name or landmark name of the receivable range is not known. You can't know if you are approaching or moving away.

  The present invention has been made in view of such circumstances, and an object of the present invention is to allow a user to intuitively grasp the receivable range of each broadcast service when the portable receiver can receive a plurality of broadcast services. Is to provide.

  One embodiment of the present invention is a portable receiver that can receive a plurality of broadcasting services provided from a plurality of broadcasting stations. The portable receiver stores a tuner unit that receives a plurality of broadcast services, a position specifying unit that specifies the current position of the portable receiver, and broadcast service information including at least information indicating the positions of the plurality of broadcast stations. The distance between the broadcast service information storage unit, the positional relationship calculation unit that calculates the distance between the current position and each broadcast station based on the broadcast service information, and the portable receiver among the broadcast stations is short A priority presentation control unit that preferentially presents the broadcasting service of the other broadcasting station.

According to this aspect, when a plurality of broadcast services can be received by the portable receiver, a broadcast station that provides the user with any broadcast service by observing the manner in which the broadcast service is reproduced. It is possible to intuitively grasp whether it is in a position close to.
Note that “preferentially present” means that the user is more easily viewable or more conspicuous than other broadcast services, or that one is more easily recognized than the other.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  According to the present invention, when a plurality of broadcast services can be received by a portable receiver, the user can intuitively grasp the receivable range of each broadcast service.

1 is a schematic configuration diagram of a broadcast receiving system including a portable receiver according to an embodiment of the present invention. It is a table | surface which shows the content of the broadcast service information provided to a portable receiver from a management server. It is a block diagram which shows the structure of the portable receiver which concerns on one Embodiment. It is the figure which represented simply the positional relationship of a portable receiver and a 1seg broadcasting station. It is a figure explaining the determination method of a screen layout when two broadcast areas have overlapped. It is a figure explaining the change of a screen layout when a portable receiver moves from broadcasting station B1 to B2. It is a figure explaining the change of a screen layout when a portable receiver moves from broadcasting station B1 to B2. It is a figure explaining the change of a volume when a portable receiver moves from broadcasting station B1 to B2. (A)-(d) is a figure explaining the Example which changes the display size of each broadcast service according to the distance to a broadcast station, when four broadcast services are receivable. (A)-(d) is a figure explaining the Example which displays the direction where each broadcasting station is located. It is a figure explaining the change of the display time of each broadcasting service when a portable receiver moves from broadcasting station B1 to B2. It is a figure which shows the example which combined the some Example. It is a flowchart of the process which preferentially displays any broadcast service on a portable receiver when a some broadcast area has overlapped.

  FIG. 1 is a schematic configuration diagram of a broadcasting system 10 including a portable receiver 100 according to an embodiment of the present invention.

The portable receiver 100 is a portable terminal including at least an antenna that receives a one-segment broadcast, a display 200 for reproducing broadcast content obtained from the received one-segment broadcast, and a speaker (not shown). The portable receiver 100 further includes an antenna that receives radio waves emitted from a GPS (Global Positioning System) satellite 22 and an antenna that performs wireless communication with the management server 12. The wireless communication may use a local area network (LAN) or a mobile phone network. The portable receiver 100 may be, for example, a smartphone, a mobile phone, a tablet terminal, a notebook computer, or the like.
In the following description, in order to simplify the explanation, the one-segment broadcasting and the broadcast content broadcast by the one-segment broadcasting may be collectively referred to as a one-segment broadcasting service or simply a broadcasting service.

  The one-segment broadcasting stations B1 and B2 connected to a broadcasting facility (not shown) modulate the broadcast content using a channel number (frequency) set in advance for each broadcasting station and transmit it as a broadcast wave. The one-segment broadcasting stations B1 and B2 have a receivable range (hereinafter referred to as “broadcast area”) A1 and A2 of several meters to several hundred meters according to respective transmission outputs.

  A wireless communication device 14 connected to the management server 12 via a network such as a LAN can communicate with the portable receiver 100 within a communication range 16 including a plurality of broadcasting stations B1 and B2. The management server 12 holds information about the one-segment broadcasting stations B1 and B2 provided within the communication range 16 of the wireless communication device 14 (hereinafter referred to as “broadcast service information”). The management server 12 is configured to provide broadcast service information via the wireless communication device 14 in response to an inquiry from the portable receiver 100.

  In the following, the case where the portable receiver 100 acquires broadcast service information from the management server 12 via the wireless communication device 14 will be described. However, the method of acquiring broadcast service information is not limited to this, and an arbitrary method is used. Can do.

  When the portable receiver 100 is within the broadcasting area of the one-segment broadcasting station, when the one-seg viewing application built in the portable receiver is activated, the application automatically selects a channel based on the broadcast service information. The one-segment broadcasting service is received and displayed on the display 200. In FIG. 1, since the portable receiver 100 is included in both broadcast areas A1 and A2, it is possible to receive a broadcast service broadcast by both the one-segment broadcasting stations B1 and B2.

  In this embodiment, when the portable receiver 100 can receive broadcasting services from a plurality of broadcasting stations as shown in FIG. 1, the broadcasting services provided by the broadcasting station closest to the receiver are changed to other broadcasting services. It is given priority over the broadcast service provided by the broadcast station. Here, “preferentially present” refers to displaying in a manner in which the user is easier to see or stand out than other area broadcasting services, or presenting in a manner in which one is more easily recognized than the other. Specific examples of preferential presentation will be described later with reference to FIG.

  FIG. 2 is a table 50 showing the contents of the broadcast service information provided from the management server 12 to the portable receiver 100. Broadcast service information includes the broadcast station name 52, channel 54, frequency 56, latitude and longitude 58 of the broadcast station, and broadcast area radius of each broadcast station for each one-segment broadcasting station located within the communication range 16 of the wireless communication device 14. 60 and broadcast time 62 at least.

  FIG. 3 is a block diagram showing a configuration of the portable receiver 100 according to the present embodiment. This configuration can be realized in hardware by an arbitrary computer CPU, memory and other LSIs and various devices, and in software, it is realized by a program loaded in the memory. Describes functional blocks realized through collaboration. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.

  The tuner unit 104 tunes to a receivable one-segment broadcast frequency based on the broadcast service information acquired by the broadcast service information acquisition unit 124. The tuner unit 104 performs processing such as detection, demodulation, and error correction on the one-segment broadcast received via the one-segment reception antenna 102 to acquire a broadcast signal, and sends the obtained broadcast signal to the demultiplexer 106. In this embodiment, in order to simultaneously receive a plurality of one-segment broadcasting waves, two or more sets of antennas 102 and 104 tuner units (four sets in the figure) are provided.

  The demultiplexer 106 extracts audio data and video data as a broadcast service (broadcast content) from the broadcast signal, and sends them to the audio decoder 108 or the video decoder 110, respectively.

  The audio decoder 108 decodes the extracted audio data and sends the obtained audio signal to the audio output unit 114. The audio output unit 114 outputs the transmitted audio signal through the speaker 118.

  The video decoder 110 decodes the extracted video data and sends the obtained video signal to the image synthesis unit 112. The image synthesis unit 112 performs scaling of video data extracted from a plurality of broadcast signals, synthesis of video data, synthesis of menu display as necessary, in accordance with a command from the priority presentation control unit 140 described later, The image is sent to the image output unit 116. The image output unit 116 displays the transmitted video signal on the display 200.

  The broadcast service information acquisition unit 124 acquires broadcast service information from the management server 12 via the antenna 122. The acquired broadcast service information is stored in the storage device 150. The storage device 150 includes, for example, a hard disk, an optical disk such as a DVD (Digital Versatile Disc) (registered trademark), a non-volatile memory such as an SD card (registered trademark), or the like.

  Based on the GPS signal received by the GPS antenna 126, the position specifying unit 128 specifies the current position of the portable receiver 100, such as latitude and longitude, at predetermined time intervals.

  The positional relationship calculation unit 138 uses the current position of the portable receiver 100 specified by the position specifying unit 128 and the latitude and longitude of each broadcasting station included in the broadcast service information, for example, for a predetermined time interval (for example, The distance from the portable receiver 100 to each broadcasting station is calculated in several tens of seconds. In addition to the calculation of the distance, the direction of each broadcasting station viewed from the portable receiver 100 may be obtained.

  The priority presentation control unit 140 controls various priority presentation modes of the broadcast service based on the distance between the broadcasting stations obtained by the positional relationship calculation unit 138. The priority presentation control unit 140 includes a screen layout determination unit 142, an audio adjustment unit 144, a transparency adjustment unit 146, and a switching instruction unit 148.

  The screen layout determining unit 142 determines a screen layout for displaying a broadcast service with a shorter distance from the current position of the portable receiver 100 to a broadcast station larger than a broadcast service with a longer distance. The determined screen layout information is sent to the image composition unit 112.

  In addition, the screen layout determining unit 142 displays a screen layout that displays the broadcast service provided by each broadcast station in a direction corresponding to the direction in which each broadcast station is located when viewed from the current position of the portable receiver 100. You may decide.

  If there is a broadcast service that can be received among the receivable broadcast services, broadcast service information such as the broadcast start time is displayed in the area where the broadcast service is to be displayed, or a display area is allocated to the broadcast service. It may not be possible.

  The sound adjustment unit 144 determines the sound of the broadcast service closer to the broadcast station from the current position of the portable receiver 100 to a louder volume than the sound of the broadcast service farther away. The determined volume is set in the audio output unit 114.

  The transparency adjustment unit 146 displays a broadcast service with a shorter distance from the current position of the portable receiver 100 to the broadcast station darker than a broadcast service with a longer distance. More specifically, the density of each broadcast service is changed by changing the transparency of the filter 152 disposed on the upper surface of the display 200.

  The switching instruction unit 148 sequentially switches and displays receivable broadcast services. More specifically, the switching instruction unit 148 displays the display time of the broadcast service closer to the broadcast station from the current position of the portable receiver 100 than the display time of the broadcast service farther away. Each display time is determined so as to be longer. Information about this display time is sent to the image composition unit 112.

  Based on a command from the priority presentation control unit 140, the image synthesis unit 112 synthesizes or switches video signals of broadcast services received from a plurality of broadcast stations. That is, the video signals from the broadcasting stations are synthesized according to the screen layout sent from the screen layout determining unit 142, or the video signals from the broadcasting stations are switched according to the display time sent from the switching instruction unit 148. To do.

  The audio output unit 114 outputs the audio signal of the broadcast service received from each broadcast station at the volume set by the audio adjustment unit 144.

  Next, an example of the portable receiver 100 configured as described above will be described.

Example 1.
FIG. 4 is a diagram simply showing the positional relationship between the portable receiver 100 and the one-segment broadcasting stations B1 and B2. In the following description, it is assumed that the star in each drawing represents the current position of the portable receiver 100.

  The portable receiver 100 is located in a portion where the broadcast area A1 of the broadcast station B1 and the broadcast area A2 of the broadcast station B2 overlap, and can receive both broadcast services. In addition, the distance from the portable receiver 100 to the broadcasting station B1 is L1, and the distance to the broadcasting station B2 is L2. The positional relationship calculation unit 138 calculates these distances L1 and L2 at predetermined time intervals.

  FIG. 5 is a diagram illustrating a screen layout determination method by the screen layout determination unit 142 when two broadcast areas overlap as shown in FIG.

  FIG. 5 shows layouts of an area S1 in which a broadcast service provided from the broadcasting station B1 is displayed and an area S2 in which the broadcasting service provided from the broadcasting station B2 is displayed in the display 200 of the portable receiver 100. Show. The width of the entire display area of the display 200 is W, the height is H, and the aspect ratio is K = W / H. Further, the width of the region S1 is w1, the height is h1, the width of the region S2 is w2, and the height is h2. The screen layout determining unit 142 calculates these values according to the following formula.

(Equation 1)
w1 = W / (1 + L1 / L2)
h1 = w1 / K
w2 = W / (1 + L2 / L1)
h2 = w2 / K

  As described above, the closer the distance from the portable receiver to the broadcast station, the larger the size of the area where the broadcast service of the broadcast station is displayed, and the smaller the distance from the broadcast station, the smaller the area size. This will be described with reference to FIG.

  FIG. 6 shows a screen layout when the portable receiver 100 moves from the broadcasting station B1 to B2 when there are two broadcasting areas A1 and A2 by the two broadcasting stations B1 and B2, as shown in FIG. It is a figure explaining a change. The map 202 represents the passage of time from the upper left side to the lower right side in the figure, and the map 202 above the dotted line in each of the upper and lower stages shows the portable receiver 100, broadcasting stations B1, B2 and broadcasting area A1 at times t1 to t6. , A2 represents the positional relationship, and the lower side of the dotted line represents the screen layout in the display 200 when the positional relationship exists.

  At time t1, portable receiver 100 is at the position of broadcasting station B1. Since this position is outside the broadcast area A2 and cannot receive the broadcast service S2, only the broadcast service S1 is displayed on the entire display 200.

  At time t2, portable receiver 100 enters both broadcast areas A1 and A2, and can receive both broadcast services simultaneously. According to Equation 1, the size of the area allocated to each broadcast service is calculated. When portable receiver 100 moves in the direction from broadcast station B1 to broadcast station B2 from time t3 to t5, the distance from portable receiver 100 to broadcast station B1 decreases and the distance to broadcast station B2 increases. To do. As a result, the area occupied by the broadcast service S1 in the display becomes smaller and the area occupied by the broadcast service S2 becomes larger.

  At time t6, the portable receiver 100 is at the position of the broadcasting station B2. Since this position is outside the broadcast area A1 and cannot receive the broadcast service S1, only the broadcast service S2 is displayed on the entire display.

  As described above, by changing the screen layout according to the distance from the portable receiver to the broadcasting station, when the portable receiver is at a position where a plurality of broadcast services can be received, the user can By observing the change, it becomes possible to intuitively grasp the broadcast area of each broadcast service. For example, when the display size of the broadcast service is reduced in the display while the user is moving with the portable display device, the user can recognize that he / she is moving away from the broadcast area of the broadcast service. . Therefore, it can be used as a material for determining whether or not to stay on the spot and continue to watch the broadcast service. If the display of the broadcast service disappears from the display, the user can recognize that the user has gone out of the broadcast area of the broadcast service.

Example 2
Instead of changing the screen layout of the broadcast service according to the distance from the portable receiver to the broadcast station, the display density of the broadcast service may be changed. The filter 152 superimposed on the display of the portable receiver 100 is configured such that the transparency C (0 ≦ C ≦ 1) changes according to the applied voltage, and according to a command from the transparency adjustment unit 146. Works. C = 0 means complete opacity, and C = 1 means complete transparency.

  FIG. 7 is a diagram for explaining changes in the screen layout when the portable receiver 100 moves from the broadcasting station B1 to B2 when there are two broadcasting areas A1 and A2 by the two broadcasting stations B1 and B2. is there. The map 202 represents the passage of time from the upper left side to the lower right side in the figure, and the map 202 above the dotted line in each of the upper and lower stages shows the portable receiver 100, broadcasting stations B1, B2 and broadcasting area A1 at times t1 to t6. , A2 represents the positional relationship, and the lower side of the dotted line represents the screen layout in the display 200 when the positional relationship exists.

  The positional relationship calculation unit 138 obtains distances L1 and L2 to the broadcasting stations B1 and B2, respectively. The transparency adjustment unit 146 calculates the distance ratios R1 and R2 by Rn = Ln / Lmin (n = 1, 2), where Lmin is the smaller value. And the transparency Cn = 1 / Rn of the filter concerning the display area of each broadcasting service S1 and S2 is set.

  At time t1, portable receiver 100 is at the position of broadcasting station B1. Since this position is outside the broadcast area A2 and cannot receive the broadcast service S2, only the broadcast service S1 is displayed in the upper half of the display 200, and nothing is displayed in the lower half.

  At time t2, portable receiver 100 enters both broadcast areas A1 and A2, and can receive both broadcast services simultaneously. The transparency C1 and C2 of the filter corresponding to the broadcast services S1 and S2 are obtained, respectively. Between times t2 and t3, the transparency C1 of the broadcast service S1 = 1, and the transparency of the filter corresponding to the broadcast service S2 increases from 0 to 1. Therefore, it seems that the video of the broadcast service S2 is gradually getting darker.

  At time t4, since the distances to the broadcasting stations B1 and B2 become equal, transparency C = 1 for both broadcasting services. At time t5, this time, the transparency C2 of the broadcast service S2 becomes 1, and the transparency of the broadcast service S1 decreases from 1. At time t6, the portable receiver 100 moves to the position of the broadcasting station B2 and is out of the broadcasting area A1 and cannot receive the broadcasting service S1, so only the broadcasting service S2 is displayed in the lower half of the display 200, and the upper half. Does not display anything.

  As described above, when there is a portable receiver at a position where a plurality of broadcasting services can be received by changing the display density of the broadcasting service according to the distance from the portable receiver to the broadcasting station, the user Can intuitively grasp the broadcasting area of each broadcasting service.

Example 3
In addition to changing the display density of the broadcast service according to the distance from the portable receiver to each broadcast station, the volume of each broadcast service may be changed.

  FIG. 8 is a diagram for explaining an embodiment for changing the volume. The time axis, positional relationship, and display screen in the figure are the same as in FIG. Further, in FIG. 8, graphics V1 and V2 representing the image of the volume of each broadcasting service S1 and S2 are also drawn.

  The audio adjustment unit 144 calculates the volume V1 and V2 of each broadcast service with Vn = V0 / Rn (n = 1, 2) with respect to the reference value of the volume as V0, and the calculated volume as the audio output unit 114. Set to. The audio output unit 114 outputs audio according to the set sound volumes V1 and V2. In this way, from time t2 to time t5, as the portable receiver 100 moves from the broadcasting station B1 to B2, the volume V1 of the broadcasting service S1 decreases and the volume V2 of the broadcasting service S2 increases. When the portable receiver is outside the broadcasting area, the volume of the content is naturally zero. Thereby, the user can intuitively grasp the broadcast area of each broadcast service even from the change in volume.

  If it carries out as mentioned above, the audio | voices of broadcast service S1 and S2 will overlap, and it will become virtually unintelligible. Therefore, only the sound of the broadcast service with the shorter distance to the broadcast station may be output. In the example of FIG. 8, only the sound of the broadcast service S1 is output between times t1 and t3. After time t4 when the distance to the broadcasting station B1 is equal to the distance to the broadcasting station B2, only the sound of the broadcasting service S2 is output.

Example 4
In the above embodiment, the case where there are two receivable broadcasting services has been described. Next, with reference to FIGS. 9A to 9D, a method of changing the display size of the broadcast service according to the distance to each broadcast station when there are four receivable broadcast services will be described. To do.

  FIG. 9A shows a state in which the portable receiver 100 is located in an overlapping range of the four broadcast areas A1 to A4. The positional relationship calculation unit 138 calculates distances L1 to L4 to the broadcasting stations B1 to B4, respectively, as shown in FIG. 9B. As shown in FIG. 9C, the display 200 is equally divided into four areas in order to simultaneously display four broadcast services. Let X0 be the diagonal length of each region. The screen layout determining unit 142 calculates the display size of the broadcast service displayed in each area.

  First, the screen layout determining unit 142 selects the shortest distance among the calculated distances L1 to L4 as Lmin. Subsequently, for the broadcast services S1 to S4, the respective distance ratios R1 to R4 are calculated by Rn = Ln / Lmin (n = 1 to 4). Further, the diagonal lengths X1 to X4 of the display sizes of the broadcasting services S1 to S4 are calculated by Xn = X0 / Rn (n = 1 to 4).

  As a result, as shown in FIG. 9 (d), the broadcast service S1 having the shortest distance from the portable receiver 100 to the broadcast station is displayed in the maximum size, and the broadcast services S2, S3, and S4 having the longest distance are displayed. Is displayed in a small size. For example, if L4 = 4 · L1, the display size of S4 is 25% of the display size of S1.

  By doing so, the user can intuitively grasp the broadcast area of each broadcast service by observing the change in the display size of each broadcast service, as in the case of two broadcast services that can be received. Is possible. For example, when the display size of a broadcast service that the user is moving with a portable display device gradually increases, the user can recognize that the user is approaching the broadcast station of the broadcast service, and the broadcast service When the display size is gradually reduced, the user can recognize that the user is moving away from the broadcast area of the broadcast service.

  When there are three broadcast services that can be received, one of the divided areas of the display 200 may be used as a blackout. In addition, the number of broadcast services that can be displayed simultaneously may be increased by dividing the display 200 into six or eight in the same manner as described above.

Example 5 FIG.
In the fourth embodiment, the user can recognize whether the broadcast station is approaching or moving away from the change in the display size of the broadcast service. However, when the general direction of each broadcast station is known, the user can be directed to the specific broadcast station. This is convenient when you want to move.

  FIGS. 10A to 10D are diagrams for explaining an embodiment in which the directions in which each broadcasting station is positioned are displayed. FIG. 10A shows a state in which the portable receiver 100 is located in an overlapping range of the four broadcast areas A1 to A4, as in FIG. 9A.

  The positional relationship calculation unit 138 calculates distances L1 to L4 to the broadcasting stations B1 to B4, respectively, as shown in FIG. The positional relationship calculation unit 138 further rotates the direction of each broadcasting station B1 to B4 around the portable receiver 100 based on an electronic compass and GPS information (not shown) in the clockwise direction with the north facing 0 degree. Calculated as angles θ1 to θ4. It is assumed that the north direction is displayed on the display 200 by an electronic compass, and the user of the portable receiver 100 holds the receiver in a state in which the upper side of the display 200 is facing north when viewing this.

  As shown in FIG. 10C, the display 200 is equally divided into four areas in order to simultaneously display four broadcast services. The screen layout determination unit 142 calculates the display size of the broadcast service displayed in each area in the same manner as in the fourth embodiment. Furthermore, as shown in FIG. 10D, the screen layout determining unit 142 arranges the corresponding broadcast service displays S1 to S4 in the area in the direction in which each broadcast station is located when viewed from the center of the screen. The arrows Y1 to Y4 representing the direction in which each broadcasting station is located may be displayed together.

  When the direction in which each broadcasting station is located is not in the diagonal direction, or when there are two broadcasting stations in the same direction, upper right, lower right, lower left, upper left, in ascending order of θn obtained in FIG. Broadcast services may be displayed clockwise in the order of the areas.

  As described above, in the fifth embodiment, the direction of the broadcasting station of each broadcasting service viewed from the portable receiver 100 is obtained, and the broadcasting service and the arrow are displayed in the display 200 according to this direction. Thereby, the user can intuitively understand in which direction the reception sensitivity of the broadcast service is improved.

Example 6
Instead of simultaneously displaying a plurality of broadcast services on the display, the broadcast services may be alternately switched and displayed. In this case, the broadcast area with the shorter distance from the portable receiver 100 to the broadcast station is displayed longer, and the broadcast service with the longer distance is displayed for a short time, thereby allowing the user to grasp the broadcast area.

  FIG. 11 shows such an embodiment. The maps 210, 212 and 214 on the left side of FIG. 11 show the positional relationship between the current position of the portable receiver 100 and the broadcasting stations B1 and B2 and the broadcasting areas A1 and A2. Time tables 220, 222, and 224 are diagrams showing how the broadcast services S1 and S2 are switched corresponding to the maps 210, 212, and 214, respectively. In this embodiment, the cycle T in which the two broadcast services S1 and S2 are repeatedly displayed is constant, and the switching instruction unit 148 includes the cycle T within the cycle T according to the distance from the portable receiver 100 to each broadcast station. Set the time to display each broadcast service with.

  Since the distance from the portable receiver 100 to the broadcast station B1 is closer at the position shown in the map 210, the display time of the corresponding broadcast service S1 is set longer than the display time of the broadcast service S2. Since the distance to the broadcasting station B1 and the distance between the broadcasting stations B2 are equal at the position shown in the map 212, the display times of the broadcasting services S1 and S2 are set equal. Since the distance from the portable receiver 100 to the broadcast station B2 is closer at the position shown in the map 214, the display time of the corresponding broadcast service S2 is set longer than the display time of the broadcast service S1.

Example 7
The above-described embodiments can be used in combination with each other. FIG. 12 shows an example. Similar to FIG. 11, the maps 210, 212, and 214 indicate the positional relationship between the current position of the portable receiver 100 and the broadcasting stations B 1 and B 2 and the broadcasting areas A 1 and A 2. The time tables 220, 222, and 224 indicate how the priority display times of the broadcast services S1 and S2 are switched corresponding to the maps 210, 212, and 214, respectively. Screens 240, 242 and 244 show display modes of the broadcast services S 1 and S 2 in the display 200.

  In this example, the switching instruction unit 148 sets a priority display time for each receivable broadcast service. The priority display time is set to be longer at the shorter distance from the portable receiver 100 to the broadcast station than at the longer distance. That is, since the distance from the portable receiver 100 to the broadcasting station B1 is closer at the position shown in the map 210, the priority display time of the corresponding broadcasting service S1 is set longer than that of the broadcasting service S2. Since the distance to the broadcasting station B1 and the distance between the broadcasting stations B2 are equal at the position shown in the map 212, the priority display times of the broadcasting services S1 and S2 are set equal. Since the distance from the portable receiver 100 to the broadcasting station B2 is shorter at the position shown in the map 214, the priority display time of the corresponding broadcasting service S2 is set longer than that of the broadcasting service S1.

  During each priority display time, the size and darkness of the broadcast service being preferentially displayed are displayed larger and darker than the other broadcast service. Further, the volume of the broadcast service being preferentially displayed is reproduced larger than that of the other broadcast service.

  FIG. 13 is a flowchart of a process for preferentially displaying one of the broadcast services on the portable receiver 100 when a plurality of broadcast areas overlap. This process is repeatedly executed at predetermined time intervals.

  The broadcast service information acquisition unit 134 acquires broadcast service information of a broadcast station that can be received near the current position from the management server 12 (S10). The position specifying unit 128 acquires the current position of the portable receiver 100 (S12). The positional relationship calculation unit 138 calculates the distance between the portable receiver 100 and each broadcasting station (S14). The priority presentation control unit 140 determines a screen layout according to the calculated distance (S16). The screen output unit synthesizes and displays the broadcast services of the respective broadcast stations according to the determined layout (S18).

  As described above, according to the present embodiment, when a plurality of broadcast services can be received by the portable receiver, the user of the portable receiver can observe the screen on which the broadcast service is reproduced, It is possible to intuitively grasp which broadcasting service is provided near the broadcasting station.

  In the above, this invention was demonstrated based on the Example. These embodiments are exemplifications, and it is understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are within the scope of the present invention. is there.

  A map acquisition unit (not shown) that acquires map data of a predetermined range around the current position specified by the position specifying unit 128 (for example, 1 km square around the current position) from the management server 12 or the storage device 150 or the like. And a map display unit that displays on the display 200 a map image created by superimposing the broadcast area of the broadcasting station located within the range displayed on the display 200 and superimposing it on the map data in the range (see FIG. (Not shown). Thereby, it is possible to know in detail the range of the actual broadcasting service and the position of the broadcasting station.

  The broadcast service information may include additional information such as the characteristics of each one-segment broadcasting station and the contents of the program being broadcast. In addition to the broadcast area, these pieces of information may be displayed superimposed on the map image.

  In the embodiment, it has been described that the one-segment broadcasting is received by the portable receiver. However, the present invention is not limited to reception of one-segment broadcasting, and can also be applied to reception of full segment broadcasting, 12 segment broadcasting, and the like. The present invention can also be applied to receiving a broadcast that uses two or more segments that may be implemented in the future.

  DESCRIPTION OF SYMBOLS 10 Broadcast system, 12 Management server, 50 Broadcast service information, 100 Portable receiver, 104 Tuner part, 112 Image composition part, 124 Broadcast service information acquisition part, 128 Location specification part, 138 Position relation calculation part, 140 Priority presentation control Part, 142 screen layout determination part, 144 audio adjustment part, 146 transparency adjustment part, 148 switching instruction part, 150 storage device, 200 display, A broadcast area, B broadcast station, S broadcast service.

Claims (7)

A portable receiver capable of receiving a plurality of broadcasting services provided from a plurality of broadcasting stations,
A tuner unit for receiving each of the plurality of broadcast services;
A position specifying unit for specifying a current position of the portable receiver;
A broadcast service information storage unit for storing broadcast service information including at least information indicating positions of the plurality of broadcast stations;
A positional relationship calculation unit that calculates a direction in which each broadcasting station is viewed from the current position based on the broadcast service information;
A priority presentation control unit that displays a video of a broadcast service provided by each broadcasting station in a direction corresponding to the direction with respect to the center of the screen displayed on the display unit ;
A portable receiver comprising: The positional relationship calculation unit further calculates a distance between the current position and each broadcast station based on the broadcast service information,
The priority presentation control unit controls the broadcast service video of the broadcast station with the shorter distance to be displayed larger on the display unit than the broadcast service video of the broadcast station with the farther distance. The portable receiver according to claim 1, wherein: The positional relationship calculation unit further calculates a distance between the current position and each broadcast station based on the broadcast service information,
The priority presentation control unit controls the video of the broadcasting service of the broadcasting station with the shorter distance to be displayed darker on the display unit than the video of the broadcasting service of the broadcasting station with the farther distance. The portable receiver according to claim 1, wherein: The positional relationship calculation unit further calculates a distance between the current position and each broadcast station based on the broadcast service information,
The priority presentation control unit controls the sound of the broadcasting service of the broadcasting station with the shorter distance so that the sound volume is larger than the sound of the broadcasting service of the broadcasting station with the farther distance. The portable receiver according to claim 1 . A portable receiver capable of receiving a plurality of broadcasting services provided from a plurality of broadcasting stations,
A tuner unit for receiving each of the plurality of broadcast services;
A position specifying unit for specifying a current position of the portable receiver;
A broadcast service information storage unit for storing broadcast service information including at least information indicating positions of the plurality of broadcast stations;
A positional relationship calculation unit that calculates a distance between the current position and each broadcast station based on the broadcast service information;
The presentation time of the broadcast services before Symbol distance closer broadcasters, said distance so is longer than the presentation time farther broadcasting service broadcasters, presenting switching the plurality of broadcast services alternately A priority presentation control unit;
PORTABLE receiver you comprising: a. A broadcast receiving method used for a portable receiver capable of receiving a plurality of broadcast services provided from a plurality of broadcast stations,
Identify the current location of the portable receiver;
Storing broadcast service information including at least information indicating positions of the plurality of broadcast stations,
Calculate the direction of each broadcast station as viewed from the current position based on the broadcast service information,
The video of the broadcast service provided by each broadcasting station is displayed in the direction corresponding to the direction with respect to the center of the screen displayed on the display unit.
Broadcast receiving method including the above . A broadcast receiving method used for a portable receiver capable of receiving a plurality of broadcast services provided from a plurality of broadcast stations,
Identify the current location of the portable receiver;
Storing broadcast service information including at least information indicating positions of the plurality of broadcast stations,
Calculate the distance between the current position and each broadcast station based on the broadcast service information,
The plurality of broadcasting services are alternately switched and presented so that the presentation time of the broadcasting service of the broadcasting station with the shorter distance is longer than the presentation time of the broadcasting service of the broadcasting station with the farther distance.
Broadcast receiving method including the above.

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