JP5640904B2 - 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). . 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

  However, with the technique described in Patent Document 1, even if the user selects any broadcast program introduction information, the current position of the mobile station, that is, the area one-segment broadcast receiver is outside the broadcast area, and the broadcast program cannot be received. There is a case. Also, the user cannot know where to move to receive the selected broadcast program.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique that allows a portable receiver to easily determine a place where a broadcast can be received.

  One embodiment of the present invention is a portable receiver that can receive a broadcast. The portable receiver receives a position identifying unit that identifies the current position of the portable receiver, a broadcast receivable area of a broadcasting station located within a predetermined range around the identified current position, and a broadcast of the broadcasting station A broadcast service information acquisition unit that acquires broadcast service information including the frequency information to be displayed, and a map display unit that graphically superimposes the broadcast receivable area on the map data and displays it on the display.

  According to this aspect, the receivable range of the broadcasting station that can be received in the vicinity of the current position of the portable receiver is displayed on the display of the portable receiver by being superimposed on the map data around the current position. Thus, the user can easily determine where the user can move to receive the broadcast.

  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, it is possible to easily determine a place where a portable receiver can receive a broadcast.

It is a schematic block diagram of the communication system containing the portable receiver which concerns on one Embodiment of this invention. It is a table | surface which shows 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 this embodiment. It is a figure which shows an example of the map data containing the broadcast service information displayed on the display of a portable receiver. It is a flowchart of the process which displays broadcast service information on the display of a portable receiver.

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

  The portable receiver 100 is a portable terminal that includes at least an antenna that receives a one-segment broadcast, a display for reproducing broadcast content obtained from the received one-segment broadcast, and a speaker. 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.

  A one-segment broadcasting station 20 connected to a broadcasting facility (not shown) modulates broadcast content using a channel number (frequency) set in advance for each broadcasting station, and transmits it as a broadcast wave. The one-segment broadcasting station 20 has a receivable range (hereinafter referred to as “broadcast area”) 18 of several meters to several hundred meters according to each transmission output.

  The 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 the broadcast area 18 therein. The management server 12 holds at least map data within the communication range 16 of the wireless communication device 14. In addition, the management server 12 holds information related to the one-segment broadcasting station 20 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 map data and broadcast service information via the wireless communication device 14 in response to an inquiry from the portable receiver 100.

  In the following, a case where the portable receiver 100 acquires map data and broadcast service information from the management server 12 via the wireless communication device 14 will be described. However, the method for acquiring map data and broadcast service information is not limited to this. Any method can be used.

  When the portable receiver 100 is in the broadcast area 18 of each one-segment broadcasting station 20, the user of the portable receiver 100 receives the one-segment broadcasting from the one-segment broadcasting station 20 by setting the channel for the one-segment broadcasting. The broadcast content obtained in this way can be viewed.

  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. The broadcast service information includes the broadcast station name 52, channel 54, frequency 56, latitude and longitude 58 of the broadcast station, broadcast area radius 60 of each broadcast station, for each one-segment broadcast station located in the communication range of the wireless communication device 14. And broadcast time 62 at least.

  The broadcast service information in FIG. 2 may be created separately from the map data and stored in the management server 12. Alternatively, the map data may be created and stored in the management server 12 in a form in which the broadcast service information of each broadcast station is associated with the broadcast station position in the map data.

  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 communication unit 124 acquires broadcast service information transmitted from the management server 12 via the wireless communication device 14 via the antenna 122. The acquired broadcast service information is stored in the storage device 138. The storage device 138 includes, for example, a hard disk, an optical disk such as a DVD (Digital Versatile Disc), a non-volatile memory such as an SD card, and 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 control unit 130 includes a map acquisition unit 132, a broadcast service information acquisition unit 134, and a map display unit 136.

  The map acquisition unit 132 acquires map data of a predetermined range around the current position specified by the position specifying unit (for example, 1 km square around the current position) from the management server 12 and the like, and stores it in the storage device 138. Store. Wide-area map data may be stored in the storage device 138 in advance, and the map acquisition unit 132 may search for map data in a predetermined range around the current position.

  The broadcast service information acquisition unit 134 specifies a broadcast station located within the range displayed on the display 120 of the portable receiver among the map data acquired by the map acquisition unit 132. Then, broadcast service information related to the specified broadcast station is acquired from the management server 12 or the like and stored in the storage device 138.

  The map display unit 136 graphics the broadcast area of the broadcasting station located within the range displayed on the display 120 and sends a map image created by superimposing the broadcast area to the map data in the range to the image output unit 116. The image output unit 116 outputs the created map image to the display 120.

  When the user who viewed the map image performs an operation of selecting any broadcast area, the control unit 130 determines the frequency of the one-segment broadcasting station corresponding to the selected broadcast area from the broadcast service information in the storage device 138. Obtain it and send it to the tuner unit 104.

The tuner unit 104 tunes to the frequency of the one-segment broadcasting station sent from the control unit 130. 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 order to simultaneously receive a plurality of broadcast waves, a plurality of antennas 102 and tuners 104 may be 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 composition unit 112 performs menu screen composition, image data scaling, and the like as necessary, and sends the result to the image output unit 116. The image output unit 116 displays the transmitted video signal on the display 120.

  Next, the operation of the portable receiver 100 will be described.

  FIG. 4 shows an example of a map image 70 including broadcast service information displayed on the display 120 of the portable receiver 100. A star 72 in the figure represents the current position of the portable receiver 100, and a map of a predetermined range around it is displayed.

  It is assumed that the broadcast service information acquisition unit 134 specifies that there are five one-segment broadcasting stations A to E in a predetermined range of map data. For example, this specification can be performed by comparing the latitude and longitude ranges of the map with the latitude and longitude where each one-segment broadcasting station is located. Alternatively, when the broadcasting station position in the predetermined range of map data is associated with the broadcasting service information of each broadcasting station in advance, the associated broadcasting service information may be simply acquired. The one-segment broadcasting stations A to E correspond to the broadcasting stations A to E shown in the table of FIG.

  The map display unit 136 creates a figure corresponding to the broadcast area of each one-segment broadcasting station A to E. When each broadcast area is defined as a radius Rm, for example, a circle with a radius Rm centered on the broadcast station position is drawn on the map in consideration of the scale of the map. In the example of FIG. 4, a circle with a radius of 100 m centering on the broadcasting stations A and B, a circle with a radius of 80 m centering on the broadcasting station C, and a circle with a radius of 30 m centering on the broadcasting stations D and E are drawn.

  Further, the map display unit 136 compares the current time with the broadcast times of the broadcast stations A to E and determines whether or not each broadcast is being broadcast. For example, if the current time is 11:00, it can be seen that the broadcasting stations A, B, C, and E are broadcasting, but the broadcasting station D is not broadcasting. When the broadcasting is suspended, the display is performed in a manner different from the circle corresponding to the broadcasting station that is broadcasting, for example, the outer edge of the circle is a dotted line. In addition to this, character information 74 notifying when broadcasting starts may be displayed together.

  When the user selects a broadcast area on the map, the control unit 130 acquires a broadcast frequency corresponding to the broadcast area, and the tuner unit 104 automatically selects a channel. As a result, as long as the portable receiver 100 is located within the broadcast area selected by the user, the area one-segment broadcasting can be viewed without troublesome settings.

  As shown in FIG. 4, by displaying each broadcast area superimposed on a map image, the user of the portable receiver 100 can move to where in the vicinity whether or not the one-segment broadcast can be received at the current position. For example, it is possible to easily grasp whether one-seg broadcasting can be received or whether broadcasting is in progress or not.

  FIG. 5 is a flowchart of processing for displaying a broadcast service range on the portable receiver 100. The position specifying unit 128 acquires the current position of the portable receiver 100 (S10). The map acquisition unit 132 acquires map data in a predetermined range around the acquired current position (S12). The broadcast service information acquisition unit 134 acquires broadcast service information associated with the one-segment broadcasting station located within the display range of the display 120 (S14). The map display unit 136 refers to the broadcast time in the broadcast service information to determine whether or not each broadcast station is currently broadcasting (S16). The map display unit 136 creates a graphic image representing the broadcast area of each broadcast station (S18). At this time, the display mode of the graphic is changed depending on whether it is broadcasting or not. The map display unit 136 creates a map image in which the created graphic image is superimposed on the map data. The image output unit 116 outputs and displays the map image created by the map display unit 136 on the display 120 (S20).

  As described above, according to the present embodiment, the position of the area one seg broadcasting station and the broadcast reception range around the current position of the portable receiver are superimposed on the map image around the current position and the portable receiver. It was made to display on the display. As a result, the user can easily know where to move around the current position to view the Area One Seg.

  In addition, by changing the display mode according to whether broadcasting or suspension, it is possible to easily distinguish between broadcasting and suspension without moving to the broadcasting area and performing channel selection.

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be 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 also within the scope of the present invention. .

  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 mobile terminal. However, the present invention is not limited to reception of one-segment broadcasting, and can also be applied to reception of 12-segment broadcasting. 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 Communication system, 12 Management server, 14 Wireless communication apparatus, 18 Broadcast area, 20 One-segment broadcasting station, 60 Broadcast area radius, 62 Broadcast time, 100 Portable receiver, 104 Tuner part, 124 Communication part, 128 Location specific part, 132 Map acquisition part, 134 Broadcast service information acquisition part, 136 Map display part, 138 Storage device.

Claims (3)

A portable receiver capable of receiving broadcasts,
A position specifying unit for specifying a current position of the portable receiver;
Broadcast service information including a broadcast receivable area of a broadcast station located within a predetermined range around the identified current position, frequency information for receiving the broadcast of the broadcast station, and broadcast time information of the broadcast station A broadcast service information acquisition unit to acquire;
A map display unit that graphically superimposes the broadcast receivable area and superimposes it on map data, and displays it on a display;
Equipped with a,
The map display unit compares the current time with the broadcast time information to determine whether the broadcast is in progress or is suspended, and changes the display mode of the broadcast receivable area according to the determination result. A portable receiver characterized by. The tuner unit according to claim 1, further comprising a tuner unit that selects a channel using frequency information corresponding to the broadcast receivable area when the user performs an operation of selecting a broadcast receivable area displayed on the display. The portable receiver as described. A broadcast receiving method used for a portable receiver capable of receiving a broadcast,
Identifying a current position of the portable receiver,
Broadcast service information including a broadcast receivable area of a broadcast station located within a predetermined range around the identified current position, frequency information for receiving the broadcast of the broadcast station, and broadcast time information of the broadcast station A step to obtain,
A step of making the broadcast receivable area a graphic and superimposing it on map data and displaying it on a display of the portable receiver ;
Comparing the current time and the broadcast time information to determine whether the broadcast is in progress or not, and changing the display mode of the broadcast receivable area according to the determination result;
Including release transceiver way.

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