JP2007150664A - Reception state report system for mobile reception terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To report a reception state in following to a change even when a surrounding environment of the mobile reception terminal is changed in terms of changes over time. <P>SOLUTION: A plurality of the mobile phones 2 can make communication with a management center 10. Each mobile phone 2 receives a terrestrial digital television broadcast signal, detects a reception level of the broadcast signal, detects positional information for representing the position of the mobile phone 2, and transmits the reception level and the positional information to the management center 10. The management center 10 generates a database for representing the reception state of the broadcast signal at various positions on the basis of the reception level and the positional information transmitted from the mobile phone 2. The management center 10 transmits the reception state corresponding to the present positional information included in a received transmission request to the mobile phone 2 having transmitted the transmission request. The mobile phone 2 having transmitted the transmission request displays the received reception state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a reception status notification system that notifies a reception status of a broadcast signal in a mobile reception terminal such as a mobile phone.

  Currently, terrestrial digital broadcasting has started in Japan. In terrestrial digital broadcasting, transmission for mobile reception terminals, for example, portable terminals is planned. For example, Patent Document 1 discloses a technique for distributing an EPG indicating a terrestrial digital broadcast program that can be received at the current position of the mobile terminal to the mobile terminal in order to receive the transmission for the mobile terminal satisfactorily.

  In the technique disclosed in Patent Document 1, EPG request information including position information is transmitted from a mobile terminal to a communication station. The communication station has a database built therein, which stores a broadcast service area map, searches this database using the received position information as a key, and the position represented by the received position information or near that position The receivable broadcast channel is transmitted to the mobile terminal.

JP 2004-104482 A

  In the technique of Patent Document 1, a database is created in advance. There is a statement that the database will be created through field experiments and simulations. Mobile terminals are susceptible to the effects of multi-paths that block radio waves from buildings such as buildings around the mobile terminal, and that the same radio waves reflected from the building arrive at the mobile terminal from multiple directions. If the situation of the building around the location changes after the experiment or simulation, the premise has changed from when the experiment or simulation was performed. There is a high possibility that it will not be able to be received. In addition, there are individual differences (for example, the inclination of the mobile terminal itself, the orientation of the mobile terminal with respect to the broadcasting station, the difference in the sensitivity of the antenna due to the difference in the model of the mobile terminal), and the reception level also changes accordingly. Creating a detailed database has been difficult.

  The present invention provides a reception status notification system for a mobile terminal that can notify the reception status according to the status after the change even when the surrounding environment of the mobile terminal device changes with time. Objective. It is another object of the present invention to provide a mobile terminal reception status notification system that can also notify the reception status due to individual differences of mobile terminal devices.

  A mobile terminal reception status notification system according to an aspect of the present invention includes a plurality of mobile reception terminals and a management center capable of communicating with the mobile reception terminals. As the mobile reception terminal, a mobile phone, PHS, PDA, in-vehicle terminal, mobile PC, or the like capable of receiving broadcast signals such as terrestrial digital television broadcast signals can be used. Each of the mobile reception terminals includes, for example, a reception unit that receives a broadcast signal, a level detection unit that detects a reception level of the broadcast signal, a position information detection unit that detects position information indicating the position of the reception terminal, Transmitting means for transmitting the reception level and the position information to the management center. Each mobile reception terminal preferably transmits the current position information and reception level to the management center at regular intervals. The management center represents reception means for receiving the reception level and position information transmitted from each mobile reception terminal, and the reception status of the broadcast signal at various positions based on the received reception level and position information. Database creation means for creating a database. Each of the mobile reception terminals transmits a transmission request including current position information to the management center by the transmission means. The management center searches the database for the reception status corresponding to the current location information included in the received transmission request, and transmits a transmission unit to the mobile reception terminal that has transmitted the transmission request. Have. The mobile receiving terminal that has transmitted the transmission request includes receiving means for receiving the reception status, and includes display means for displaying the received reception status.

  In the reception status notification system configured in this way, instead of using a database created in advance by field experiments or simulations, the current position transmitted from each mobile reception terminal present at various positions and the position at that position A database created based on the reception level is used. For this reason, even if the situation around the mobile reception terminal has changed from the past, a database close to the current situation is used, so that the reception situation close to the current environment can be known at the mobile terminal.

  The database may include a reception area map that is created based on the reception level and the position information and that indicates whether or not the broadcast signal can be received at each position. When the management center receives the transmission request, the management center transmits a portion of the reception area map including the position represented by the position information included in the transmission request to the mobile reception terminal that has transmitted the transmission request. The reception area map displays areas that can be received and areas that cannot be received.

  If comprised in this way, when the user of a mobile reception terminal is located in the area which cannot receive, the information of which direction and how much it will be able to receive can be obtained.

  The mobile receiving terminal can comprise means for detecting its tilt. In this case, inclination information indicating the detected inclination of the mobile reception terminal is transmitted from the mobile reception terminal to the management center together with the reception level and the position information. The management center represents the reception status of the broadcast signal at various inclinations at various positions based on the reception level, position information, and inclination information transmitted from each mobile reception terminal. To do. Each mobile reception terminal includes inclination information in the transmission request and transmits the information to the management center, and the management center corresponds to the current position information and inclination information included in the received transmission request. The reception status is transmitted to the mobile reception terminal that has transmitted the transmission request.

  With this configuration, when the mobile reception terminal is tilted by being held like a mobile phone, for example, it is possible to know the reception status corresponding to not only the position but also the tilt.

  The mobile receiving terminal is composed of a first and a second part, an antenna is provided inside the first part, and a mobile phone capable of changing an angle formed by the first part with respect to the second part; can do. This cellular phone is provided with angle detection means for detecting the angle. The mobile phone transmits angle information representing the detected angle together with the reception level and the position information to the management center. The management center represents the reception status of the broadcast signal at various angles at various positions based on the reception level, the position information, and the angle information transmitted from each mobile phone. . Each of the cellular phones includes the angle information in the transmission request and transmits it to the management center. The management center transmits the reception status corresponding to the current position information and angle information included in the received transmission request to the mobile phone that has transmitted the transmission request.

  In the case of a mobile phone that can change the angle that the first part makes with respect to the second part, for example a foldable mobile phone, the angle of the antenna determines which of the first part is relative to the second part The reception status varies depending on the angle. However, if the database is created as described above, it is possible to provide the user of the cellular phone with the reception status not only according to the reception position but also according to the angle of the second part with respect to the first part. it can.

  As described above, according to the present invention, even if the situation around the mobile receiving terminal changes over time, or even if there are individual differences in the mobile terminal, it is possible to cope with changes in the reception environment and individual differences. Since the reception level is supplied to the database, the mobile reception terminal can know the reception status corresponding to these.

  As shown in FIG. 1, the mobile reception terminal reception status notification system according to one embodiment of the present invention includes a plurality of mobile reception terminals, for example, mobile phones 2. These mobile telephones 2 can make calls as mobile telephones via the mobile base station 4 and can also transmit broadcast signals transmitted from a transmission station such as a terrestrial digital television broadcast transmission station 6, such as terrestrial digital television. A receiving means for receiving a broadcast signal, for example, a tuner is provided. This receiving means is capable of receiving all channels transmitted from the transmitting station 6. The cellular phone 2 further includes level detection means for detecting the reception level of the received channel, for example, a level detector.

  Further, these mobile phone devices 2 are provided with a position information detecting means for indicating the position of the mobile phone device 2, for example, a GPS device using GPS satellites 8, 8. Therefore, the position of the mobile phone device 2 can be measured with high accuracy. Further, these cellular phones 2 are also provided with a tilt detecting means, for example, a tilt detector. The inclination detector detects at what angle the mobile phone 2 is used by its user, for example with respect to a horizontal plane.

  In the case of the folding type, the cellular phone device 2 includes first and second portions 2a and 2b, and the first portion 2a is disposed so as to overlap the second portion 2b when not in use. However, in use, the first portion 2a is opened and used at an angle with respect to the second portion 2b. An antenna is accommodated in the first portion 2a, and the sensitivity of the antenna varies depending on the opening angle. Therefore, the angle of the opening is detected by an angle detector.

  Each mobile phone 2 detects each information, that is, level information by the level detector, position information by the GPS device, tilt information by the tilt detector, and angle information by the angle detector every time a certain time elapses. . Each mobile phone 2 transmits the information and model number data representing the model of the mobile phone 2 as one set to the mobile base station 4 by a transmission means, for example, a transmission circuit, as shown in FIG. This transmission can be automatically performed every time the information is detected. However, from the viewpoint of protecting personal information, it is desirable to allow the user to set whether or not to perform automatic transmission in consideration of the presence of the user of the mobile phone 2 that does not desire transmission. It is also desirable that the user can set whether or not to transmit such information.

  In the mobile base station 4, these received sets of information are transmitted to the management center 10. The management center 10 creates a database based on these sets of information. Since each mobile phone 2 is used in various positions, various inclinations, various angles, various models according to their users, various cellular phones 2 in various positions, various inclinations, various angles and various models The reception level is input corresponding to the position, tilt, angle, and model, and a database is created.

  In this database, a reception level can be searched using any one of position information, inclination information, angle information and model number information or an appropriate combination thereof as a key, and the searched reception level is set as a predetermined reference level. In comparison, information indicating whether or not terrestrial digital television broadcasting can be viewed is output. Further, based on any of the input position information, inclination information, angle information, model number information or an appropriate combination, the surrounding reception level is searched, and from the comparison result between the reception level and the reference level, It is also determined which direction the mobile phone 2 is directed or moved, and how the angle of the mobile phone 2 can be received, so that it is possible to receive a terrestrial digital television broadcast signal, and the determination result is also output. To do.

  This database is updated each time information of each set is input from each mobile phone 2 via the mobile base station 4. In other words, the data received in actual experiments at a specific time and the reception level determined by simulation are not continuously used as database data, but the reception level measured relatively recently is included in the database as data. ing.

  This database also has map data of the area where the mobile phone 2 is used, and the position indicated by the position information is indicated in the map data indicating the position indicated by the position information input as a key and its surroundings. It is possible to add an indicator, and a map so that the terrestrial digital television broadcast signal can be viewed at the position indicated by the position information and whether it can also be viewed in the vicinity is classified by color coding or the like. Process and output the data. That is, a reception area map is created and can be output.

  When any one of the mobile phones 2 wants to know whether or not the terrestrial digital television broadcast can be viewed at the current position of the mobile phone 2, the position information, inclination, Information and angle information are detected, and these are transmitted as a set to the management center 10 via the mobile base station 4 as shown in FIG. In the management center 10, the database is searched as described above using the transmitted set of information as a key, and the reception level corresponding to the set of information that is the key is retrieved. Whether or not the John broadcast signal can be received is determined, and the determination result is returned to the mobile phone 2 that has transmitted the one set of information via the mobile base station 4. At this time, in the case of a determination result that viewing is not possible, data indicating which direction should be moved is also returned. Furthermore, the above-described reception area map is also returned.

  As a result, the mobile phone 2 displays that it can be viewed or cannot be viewed, as shown in FIGS. 3A and 3B, and can be viewed as shown in FIG. Which direction it is necessary to move is displayed. Further, a reception area map is also displayed by key operation as shown in FIG. In FIG. 4D, a circle indicates an indicator representing the mobile phone 2. The shaded portion is an unreceivable area and the unshaded portion is a receivable area. is there.

  Therefore, if this reception status notification system is used, whether or not the terrestrial digital television broadcast signal can be viewed at the current position of the mobile phone 2 and in which direction to move if reception is not possible. It is possible to reduce the claim that it can be known on the text and the map and cannot be received. In addition, the reception level, which is the basis for determining whether or not viewing is possible, is transmitted from various mobile phones 2 to the management center 10 at regular intervals. Therefore, even if there is a change in the environment such as when a new building is constructed in the reception area where these cellular phones 2 are used, the reception level corresponding to the change is reflected in the database. It is possible to accurately determine whether or not the digital television broadcast signal can be viewed. In addition, the base station management side can easily identify the poor reception area by examining the database, and the basic data for planning a new installation of the relay station can be easily obtained at low cost.

  In the above embodiment, the mobile phone 2 is used as a mobile reception terminal. However, the present invention is not limited to this, but a mobile reception terminal having a receiving means for receiving a terrestrial digital television broadcast signal, for example, PHS, PDA An in-vehicle receiving device or the like can also be used. In addition, since the mobile phone 2 is used, transmission / reception with the management center 10 is performed via the mobile base station 4. However, for example, when the mobile receiving terminal is not a mobile phone, the management center 10 is connected via the wireless Internet. You can also send and receive. In the above embodiment, the management center 10 creates a database based on the reception level, position information, inclination information, and angle information, but creates a database based on the position information and the reception level at a minimum. You can also. In the above embodiment, the digital terrestrial television broadcast signal is used. However, the present invention is not limited to this, and various broadcast signals can be used as long as the mobile reception terminal can receive the broadcast signal. For example, mobile broadcast signals from satellites can be used.

  In the above embodiment, it is assumed that each terrestrial digital television broadcast signal arrives from the same direction, but actually each terrestrial digital television broadcast signal may arrive from a different direction. In preparation for this case, the reception level of terrestrial digital television broadcast signals of different channels can be individually detected, and the above database can be created for each channel.

  In the above embodiment, the GPS device detects two-dimensional information of latitude and longitude, but if it detects altitude information in addition to this, three-dimensional information can be obtained and received better. The situation can be improved. In addition, although the mobile phone is shown as the mobile terminal in the above embodiment, it can be a mobile body, for example, a terminal device mounted on a vehicle. In this case, movement at high speed can be considered. In this case, it is sufficient to collect the reception level and position information at the minimum for database creation, but by collecting data on the moving direction and moving speed of the moving object, a detailed receiving area that takes the moving direction and moving speed into consideration Information can be provided.

It is a schematic block diagram of the reception condition alerting | reporting system of the mobile reception terminal device of one Embodiment of this invention. It is a figure which shows the flow of the signal in the consultation status alerting | reporting system of FIG. It is a figure which shows the example of a display with the mobile telephone of the reception condition alerting | reporting system of FIG.

Explanation of symbols

2 Mobile phone (mobile receiving terminal)
6 Broadcasting station 10 Management center

Claims (4)

Including a plurality of mobile reception terminals and a management center capable of communicating with these mobile reception terminals,
Each mobile reception terminal receives a broadcast signal, detects a reception level of the broadcast signal, detects position information indicating the position of the mobile reception terminal, and determines the reception level and the position information from the management center. To
The management center creates a database representing the reception status of the broadcast signal at various positions based on the reception level and position information transmitted from each mobile reception terminal,
Each mobile receiving terminal transmits a transmission request including current position information to the management center,
The management center transmits the reception status corresponding to the current location information included in the received transmission request to the mobile reception terminal that has transmitted the transmission request,
The mobile reception terminal of the mobile reception terminal that has transmitted the transmission request displays the received reception status. The reception status notification system for a mobile reception terminal according to claim 1, wherein the database is created based on the reception level and the position information, and indicates whether the broadcast signal can be received at each position. When the management center receives the transmission request, the management center transmits a portion of the reception area map including the position represented by the position information included in the transmission request to the mobile reception terminal that has transmitted the transmission request. A reception status notification system of a mobile receiving terminal for transmission. The reception status notification system for a mobile reception terminal according to claim 1, wherein the mobile reception terminal includes means for detecting an inclination of the mobile reception terminal, and the inclination of the detected mobile reception terminal is detected together with the reception level and the position information. Inclination information representing is also transmitted to the management center, and the management center transmits the database in various positions at various positions based on the reception level, position information, and inclination information transmitted from each mobile reception terminal. It shall represent the reception status of the broadcast signal at an inclination,
Each of the mobile receiving terminals includes inclination information in the transmission request and transmits the information to the management center.
The management center transmits the reception status corresponding to the current position information and inclination information included in the received transmission request to the mobile reception terminal that has transmitted the transmission request. Notification system. The reception status notification system for a mobile reception terminal according to claim 1, wherein the mobile reception terminal includes first and second parts, an antenna is provided inside the first part, and the first part is the second part. An angle detection means for detecting the angle is provided, and the mobile phone includes the reception level and the position information. Angle information representing the detected angle is also sent to the management center,
The management center represents the reception status of the broadcast signal at various angles at various positions based on the reception level, the position information, and the information each time transmitted from each mobile phone. age,
Each of the mobile phone devices includes angle information in the transmission request and transmits it to the management center,
The management center receives the reception status corresponding to the current position information and angle information included in the received transmission request to the mobile phone that has transmitted the transmission request. Notification system.

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