JP4660207B2 - Information processing apparatus, local broadcast system, and broadcast receiving circuit - Google Patents

Description

  The present invention relates to an information processing device, a local broadcast system, and a broadcast receiving circuit, and more particularly, an information processing device such as a portable terminal device having a broadcast receiving function, a local broadcast system using the information processing device, and an information processing The present invention relates to a broadcast receiving circuit provided in the apparatus.

  In recent years, mobile phone devices with a TV broadcast reception function (mobile phones with a TV) are being widely provided as mobile terminal devices having a broadcast reception function. Furthermore, as a mobile terminal device having a TV broadcast receiving function, not only a mobile phone but also various devices such as a PDA (Personal Digital Assistance), a notebook personal computer (notebook personal computer), or a portable game device, etc. There is.

  By the way, conventionally, in order to receive a broadcast by the mobile terminal device as described above, the user himself / herself has to search for a broadcast wave (channel) in the area. Furthermore, in order to receive a broadcast with a mobile terminal device, it is not possible to connect to a station preset as regional data, or when the broadcasting area is crossed, the user himself / herself searches for the next station. It was necessary to perform processing. In addition, only wireless infrastructure such as wireless LAN and Bluetooth (registered trademark) cannot send data to a plurality of persons at the same time, and packet communication charges may be required.

  By the way, in a conventional mobile phone having a broadcast receiving function, in order to enable automatic tuning and tuning of wide-area broadcasting such as radio and television even if the location is moved, the mobile phone base station There has been proposed a mobile phone that receives position information, obtains the frequency of a desired broadcast station stored in a correspondence table in advance using the position information, and receives the frequency (for example, Patent Document 1). reference). Also, conventionally, when the mobile communication section receives the area identification information and the received area identification information is different from the stored area identification information, the area identification information / broadcast channel information conversion section performs broadcast channel information. Has also been proposed (see, for example, Patent Document 2).

  Further, conventionally, in order to automatically perform channel switching for each region, it is possible to receive the location information from the base station after receiving the location information from the base station after turning on the power and receiving the location information. Display the channel on the display. There has been proposed a portable terminal device in which a user selects a desired channel from channels displayed on a display and displays a television image on a display unit (see, for example, Patent Document 3).

  Also, in the case of a conventional broadcast receiving device that is moved by car, etc., even if the reception state deteriorates outside the broadcast service area, it is possible to ensure the optimal broadcast station information in the broadcast service area without requiring a large-capacity recording device. As a broadcast receiving device that is capable of continuously receiving the program being received and has excellent response when the data of the broadcast station information is changed, the latitude / longitude information and broadcast station information of the current location are obtained via the Internet. It has also been proposed to receive broadcasts by controlling the channel selection unit according to the broadcast station information acquired and stored in the broadcast station information storage memory and recorded in the broadcast station information storage memory (see, for example, Patent Document 4).

Japanese Patent Laid-Open No. 08-162909 JP 2003-174376 A JP 2003-309774 A JP 2004-023579 A

  The mobile terminal device using the above-described conventional position information is mainly used for automatic channel selection of wide area broadcasting, and is intended to smoothly perform processing when straddling between service areas of wide area broadcasting. It is not intended for local broadcasting that provides local information that is closely related to an area to an information processing apparatus such as a mobile phone having a TV function.

  In addition, for example, a tuner module that can be installed in a conventional television receiver circuit or a portable terminal device to enable viewing of television can distinguish between wide-area broadcasting and local broadcasting even when entering a local broadcasting service area. However, it is considered that there is a problem in that the local broadcast channel is recognized and the display screen is viewed.

  In view of the above-described problems, the present invention recognizes a local broadcast service area, and can smoothly switch between wide-area broadcast and local broadcast so that the local broadcast can be received. It is another object of the present invention to provide a broadcast receiving circuit.

According to the first aspect of the present invention, local broadcast recognition means for recognizing a local broadcast service area, a wireless interface for receiving a radio signal from a wireless transmission device installed in the vicinity of the local broadcast service area, Receiving setting means for setting the local broadcast to be receivable according to the output of the local broadcast recognizing means, the local broadcast recognizing means when the service area of the local broadcast is recognized, or wide area broadcast and the triggered when the reduction of the field strength of the wide broadcast is detected by the receiving circuit for receiving a local radio, the local broadcasting station to search scanning hard to lower the reception sensitivity of the reception circuit, the reception setting The means receives the channel information of the local broadcast given through the wireless interface and receives the channel information. An information processing apparatus is set to be able to receive a local broadcast of a channel, or set to be able to receive a local broadcast from the local broadcast station searched by a scan performed with the reception sensitivity lowered. Provided.

According to the second aspect of the present invention, local broadcast recognition means for recognizing a local broadcast service area, a radio interface for receiving a radio signal from a radio transmission device installed in the vicinity of the local broadcast service area, Receiving setting means for setting the local broadcast to be receivable according to the output of the local broadcast recognizing means, the local broadcast recognizing means when the service area of the local broadcast is recognized, or wide area broadcast and the triggered when the reduction of the field strength of the wide broadcast is detected by the receiving circuit for receiving a local radio, the local broadcasting station to search scanning hard to lower the reception sensitivity of the reception circuit, the reception setting The means receives the channel information of the local broadcast given through the wireless interface and receives the channel information. A local broadcast to an information processing device that is set to be able to receive a local broadcast of the channel or is set to be able to receive a local broadcast from the local broadcast station searched by scanning performed with the reception sensitivity lowered. There is provided a local broadcast system including a local broadcast station that transmits the broadcast.

According to a third aspect of the present invention, there is provided a broadcast receiving circuit provided in the information processing apparatus and capable of receiving switching between wide-area broadcasting and local broadcasting, and local broadcast recognition means for recognizing a service area of local broadcasting, When a local broadcast service area is recognized, a means for searching for a channel by lowering the reception sensitivity and a channel search in the low sensitivity mode with the lowered reception sensitivity are performed to detect whether or not a broadcast has been received. and identifies a local broadcast when receiving a broadcast, means for identifying a wide area broadcasting if not receiving a broadcast, when the local broadcast is identified, the normal state is returned to the original reception sensitivity, the identified local A broadcast receiving circuit comprising: means for setting the broadcast to be receivable.

  According to the present invention, an information processing apparatus and a local broadcast system capable of recognizing a service area of a local broadcast and smoothly switching between a wide area broadcast and a local broadcast so as to be able to receive the local broadcast, and broadcast reception A circuit can be provided.

  Hereinafter, embodiments of an information processing apparatus, a local broadcast system, and a broadcast receiving circuit according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram schematically showing an overall configuration of an example of an information processing apparatus to which the present invention is applied, and shows a mobile terminal device with a broadcast receiving function (mobile phone with TV).

  As shown in FIG. 1, a mobile phone with TV 100 to which the present invention is applied includes, for example, a TV radio reception function unit 101, a communication RF unit 102, a CPU / DSP 103, an IrDA unit 104 which is an example of an infrared interface, WLAN / BT (wireless LAN / Bluetooth) unit 105, acceleration detection unit 106, GPS (global positioning system) unit 107, geomagnetic detection unit 108, display 109, numeric keypad 110, AIU (audio interface unit) 111, speaker 112 and a microphone 113 are provided.

  Note that the TV-equipped mobile phone shown in FIG. 1 is merely an example, and the information processing apparatus according to the present invention includes, for example, a TV reception card or a TV reception module, and various types of PDAs and notebook computers equipped with an infrared interface or a wireless LAN. It goes without saying that the device is included.

  FIG. 2 is a diagram for explaining detection of a current position and a moving state by the information processing apparatus shown in FIG. In FIG. 2, reference numeral 100 is a mobile phone with TV, 200 is a TV broadcasting station that performs wide-area broadcasting, 211 to 213 are base stations of mobile phones, 221 to 223 are GPS satellites, and 230 is a local broadcasting station management server. Show.

  The TV mobile phone 100 can detect the current location of the user who has the mobile phone 100 by receiving signals from the plurality of GPS satellites 221 to 223 by the GPS unit 107 provided in the mobile phone 100, for example. The local broadcast channel corresponding to the position information detected by the GPS unit 107 can be set to be receivable. The mobile phone with TV 100 can also detect the current location from the location of a nearby base station where the telephone service is provided, for example, the current location of the user with the mobile phone 100 from the location of the base station 213. It is.

  Note that the location information of the local broadcast corresponding to the location of the mobile phone 100, that is, the location detected by the GPS unit or the location by the nearby base station 213, is registered in advance in the management server 230 of the base station 213, for example. The mobile phone 100 is provided via the base station 213 so that the memory capacity of the mobile phone 100 is not consumed.

  FIG. 3 is a diagram for explaining automatic detection of a local broadcast station by an information processing apparatus according to the present invention, and is for explaining automatic detection of a local broadcast station by a mobile phone with a TV. In FIG. 3, reference numeral 100 denotes a TV-equipped mobile phone, 200 denotes a television broadcasting station that performs wide-area broadcasting, and 241 and 242 denote local broadcasting stations that perform local broadcasting. An example of contents broadcast by the local broadcasting station will be described later with reference to FIGS. 6 and 7.

  For example, the TV mobile phone 100 receives an infrared signal from an infrared transmitter provided corresponding to each of the local broadcast stations 241 and 242 by the IrDA unit 104 that is an infrared interface provided in the mobile phone 100. Recognize the local broadcast channel. That is, the infrared signal from the infrared transmission device includes channel information that is a frequency transmitted from the corresponding local broadcast station, and the mobile phone with TV 100 receives the infrared signal received via the IrDA unit 104. The local broadcast channel is recognized by the channel information.

  Here, the means for providing the local broadcast channel information and the like to the mobile phone 100 is not limited to the infrared transmission device corresponding to the IrDA unit 104 which is an infrared interface compliant with the IrDA standard. A wireless transmission device corresponding to the / BT unit 105 may be used. Note that such an infrared transmission device and a wireless transmission device are installed in the vicinity of a local broadcast service area, for example.

  FIG. 4 is a flowchart for explaining an example of automatic detection of a local broadcast station by the information processing apparatus according to the present invention.

  As shown in FIG. 4, first, when the automatic detection processing of the local broadcasting station is started, in step ST11, whether or not the mobile phone with TV is in the TV function mode and the user is watching an arbitrary wide-area TV broadcast. Is determined. If it is determined in step ST11 that the television function mode is not in effect, the process ends. If it is determined that the television function mode is in effect, the process proceeds to step ST12. Here, in addition to the TV function mode, the TV mobile phone has various modes such as a telephone mode, a mail mode, an Internet mode, a photography mode, a game mode, and the like. Is activated by a signal indicating whether or not a television image is displayed on the screen. This step ST11 is the same as step ST21 in FIG. 5 and step ST31 in FIG. 9 described later.

  If a stereo pilot signal is detected in step ST12, the process proceeds to step ST13 to start the search, and for example, a status screen during the search is displayed for about 10 seconds. That is, for example, by using the fact that CMs are likely to be broadcast in stereo, by detecting the pilot signal, the timing of other channels is utilized using timing that does not affect the viewing of the broadcast program itself. Search is performed, and the process proceeds to step ST14. As the status screen during the search, for example, a telop indicating that the search is being performed and a signal received during the search can be displayed.

  In step ST14, it is determined whether or not the local broadcast station has been detected by the search. Here, as described above, the channel information of the local broadcast station is provided from, for example, an infrared transmission device installed in the vicinity of the local broadcast service area. If it is determined in step ST14 that a local broadcast station has been detected, the process proceeds to step ST15 to determine whether or not to switch to the local broadcast station. If it is determined in step ST14 that the local broadcast station is not detected, the process proceeds to step ST17, and the normal television broadcast that has been watched, that is, the arbitrary wide-area television broadcast is restored.

  If it is determined in step ST15 that switching to the local broadcast station is not performed, the process proceeds to step ST18, and the normal television broadcast that has been watched is restored as in step ST17. If it is determined in step ST15 that switching to the local broadcasting station is to be performed, switching to the local broadcasting station is started and reception is started. Note that the determination in step ST15 is performed, for example, by processing such as a user pressing a predetermined button (switch) provided on the mobile phone 100. The predetermined button of the mobile phone can be provided as the button 114 in the TV-equipped mobile phone 100 shown in FIG. 3, for example.

  For example, in the TV mobile phone 100 of FIG. 3, in addition to the tuner 115a for actually receiving and listening to the television broadcast, a search-dedicated tuner 115b for recognizing the local broadcast is provided. It is only necessary to determine whether or not to switch to the local broadcast station after detecting the local broadcast station.

  FIG. 5 is a flowchart for explaining another example of automatic detection of a local broadcast station by the information processing apparatus according to the present invention, and automatically detects a local broadcast station while viewing a wide area television broadcast on a mobile phone with TV. The other example of a process is shown.

  As shown in FIG. 5, first, when the automatic detection processing of the local broadcasting station is started, it is determined in step ST21 that the mobile phone with TV is in the TV function mode and the user is watching an arbitrary wide-area TV broadcast. Then, the IrDA unit 104 provided in the mobile phone in step ST22 searches for infrared rays every 10 seconds, for example, and proceeds to step ST23. In step ST23, for example, when the IrDA unit 104 receives an infrared signal transmitted from the infrared transmission device, the process proceeds to step ST24, and for example, a telop indicating that the infrared signal from the infrared transmission device has been received is displayed on the screen. .

  Furthermore, it progresses to step ST25, it is discriminate | determined whether switching to a local broadcast station is performed, and when it determines with not switching to a local broadcast station, it will progress to step ST27 and will be normal normal watched until then. When it is determined that the television broadcasting, that is, the arbitrary wide-area television broadcasting is restored and, on the contrary, the switching to the local broadcasting station is performed, the process proceeds to step ST26 to switch to the local broadcasting station and start reception. Note that the determination in step ST25 is performed, for example, by a process such as a user pressing a predetermined button provided on the mobile phone. The predetermined button of the mobile phone can be provided as the button 114 in the TV-equipped mobile phone 100 shown in FIG. 3, for example.

  FIG. 6 is a diagram schematically showing an example of a department store to which the local broadcast system according to the present invention is applied. In FIG. 6, reference numerals 100 and 100 ′ are TV mobile phones, 104 and 104 ′ are IrDA (infrared communication) units, 300 is an escalator for uplink, ATN1 and ATN2 are antennas of local broadcasting stations, and IRT1 and IRT2 are infrared transmissions. The device, and USR and USR ′ indicate a user.

  As shown in FIG. 6, for example, antennas ATN1 and ATN2 of different local broadcast stations are provided in the vicinity of the escalator 300 on the first floor (1F) and the second floor (2F) of a department store. Near the antennas ATN1 and ATN2 of the local broadcast stations, infrared transmitters IRT1 and IRT2 are installed to transmit channel information corresponding to each local broadcast station.

  That is, the user USR ′ on the first floor receives the infrared signal from the infrared transmission device IRT1 provided on the ceiling of the first floor at the IrDA unit 104 ′ of the mobile phone 100 ′ with TV and receives the local broadcasting station for the first floor. The mobile phone 100 ′ is set to receive a channel, and receives radio waves from the antenna ATN1 of the first-floor local broadcast station provided on the first-floor ceiling and displays the first-floor floor information.

  When the user USR moves from the first floor to the second floor using the up escalator 300, for example, the infrared signal from the infrared transmitter IRT2 provided on the ceiling near the exit of the second floor of the escalator 300 is carried with a TV. The mobile phone 100 is set to receive the channel of the local broadcasting station for the second floor received by the IrDA unit 104 of the telephone 100, and the mobile phone 100 is connected to the antenna ATN2 of the local broadcasting station for the second floor provided on the ceiling of the second floor. Receive radio waves and display floor information on the second floor. Here, the users USR and USR ′ are, for example, the same person, and the mobile phones with TV 100 and 100 ′ and the IrDA units 104 and 104 ′ are the same.

  FIG. 7 is a diagram showing an example of a screen displayed on the information processing apparatus according to the present invention in the local broadcast system shown in FIG.

  FIG. 7 shows a state in which three screens P1, P2, and P3 are displayed every three seconds and are sequentially switched (P1⇒P2⇒P3⇒P1⇒ ...). Specifically, for example, on the screen P1 that displays the floor information (information) on the second floor (men's clothing department), today's event "brand tie three 1000 yen, first 20 people" is displayed for 3 seconds, A screen P2 showing the store information (map) on the second floor is displayed for 3 seconds, and a screen P3 displaying the store (D store) where the event is performed blinking is displayed for 3 seconds. When the display of the screen P3 for 3 seconds is completed, the display returns to the screen P1 again and the same display is repeated.

  The example of FIG. 7 described above is merely an example, and in addition to displaying and switching such a fixed screen for a certain period of time, various images such as scrolling the screen or displaying a moving image are displayed. Can do. In addition to department stores, large-scale mass retailers, and shopping streets that have multiple stores or sales floors, such local broadcasting systems are installed in station platforms, communication paths, amusement parks, and office buildings. Thus, various information on the installed objects can be displayed on the mobile phone with TV.

  As described above, the information processing apparatus to which the present invention is applied includes not only a mobile phone with a TV but also various devices such as a PDA, a notebook personal computer, or a portable game device. Needless to say.

  FIG. 8 is a block diagram schematically showing a broadcast receiving circuit in an example of the information processing apparatus according to the present invention. Note that the broadcast receiving circuit shown in FIG. 8 enables viewing of television broadcasts by being incorporated as a tuner module in a mobile phone, for example.

  As shown in FIG. 8, a broadcast receiving circuit (tuner module) 1 demodulates an output of an RF receiving circuit 10 having an RF amplifier (high frequency amplifier: head amplifier) 10a connected to an antenna 14 and an RF receiving circuit 10 A demodulation circuit 11 that outputs a video signal Video and an audio signal Audio, a transistor 13 that controls the gain of the RF amplifier 10a, and resistors 13a and 13b are provided. Note that the transistor 13 is not limited to the bipolar type, and any transistor having a switching function may be used.

  The RF amplifier 10a amplifies high-frequency signals for television broadcasting, that is, wide-area television broadcasting and local television broadcasting, and is fed back from the demodulation circuit 11, for example, a control voltage CV for automatic gain control of 0 to 3V. To adjust the gain. The RF amplifier 10a is controlled so that the gain increases as the potential of the control voltage CV increases.

  A resistor 13a, a transistor 13 and a resistor 13b are connected in series between the line FL for feeding back the control voltage CV from the demodulating circuit 11 to the RF amplifier 10a and the ground GND, and the control terminal of the transistor 13 is connected to the CPU / DSP 103. A control signal CS from the general-purpose port 12 is input.

  The control signal CS is, for example, when a user with a mobile phone recognizes that he / she is in a local broadcast service area and presses a predetermined button on the mobile phone or enters a building such as a department store, for example. For example, when a decrease in electric field strength of wide area broadcasting is detected automatically or when a predetermined button is pressed, the transistor 13 is turned on to reduce the level of the control voltage CV to reduce the reception sensitivity. Signal. Details will be described with reference to FIG. Note that the configuration of FIG. 8 is merely an example, and it goes without saying that the gain control of the RF amplifier 10a is also performed by various configurations.

  FIG. 9 is a flowchart for explaining an example of local broadcast station detection processing in the broadcast receiving circuit shown in FIG. 8, and shows an example of local broadcast station detection processing while viewing a wide-area television broadcast on a mobile phone with TV. Is.

  As shown in FIGS. 8 and 9, when it is determined in step ST31 that the mobile phone with TV is in the TV function mode and the user is watching an arbitrary wide-area TV broadcast, a search for a local broadcast station is performed. First, the process proceeds to step ST32 where the sensitivity of the receiving circuit 10 is lowered. Here, as described above, the search for the local broadcasting station can be performed by, for example, recognizing that a user with a mobile phone with TV is in the service area of the local broadcast and pressing a predetermined button on the mobile phone, Alternatively, for example, when entering a building such as a department store, it is started automatically by detecting that the electric field strength of the wide area broadcast is lowered and pressing a predetermined button.

  Specifically, the reception sensitivity lowering process in step ST32 is performed by, for example, turning on the transistor 13 with the control signal CS at a high level and lowering the control voltage CV (for example, lowering to about 1V) by the resistors 13a and 13b. The gain of the amplifier 10a is lowered, and the receiving circuit 10 is set to the low sensitivity field mode. As a result, the difference between the wide area broadcast and the local broadcast becomes clear, and it becomes possible to easily search for the local broadcast station. In step ST33, scanning is performed in the low sensitivity mode.

  Furthermore, it progresses to step ST34 and it is discriminate | determined whether the broadcast station was received. When a user with a mobile phone with a TV is in the service area of the local broadcast, the distance between the local broadcast and the mobile phone with a TV becomes very short. The electric field strength when receiving a local broadcast becomes stronger. Therefore, only local broadcasting is detected by scanning with the reception sensitivity lowered.

  If it is determined in step ST34 that a broadcast station has been received, the process proceeds to step ST35 to return the reception sensitivity to the normal state. That is, in step ST35, the control signal CS is set to a low level, the transistor 13 is turned off, the control voltage CV is returned to the original voltage, and the gain of the RF amplifier 10a is returned to the original magnitude. And it progresses to step ST36, switches to a local broadcasting station, and starts reception. In step ST36, the local broadcast is received as it is, but the same step as in step ST15 in FIG. 4 described above is inserted to switch to the local broadcast station. Only when it is determined whether or not to switch to the local broadcast station, it may be switched to the local broadcast station to start reception.

  On the other hand, if it is determined in step ST34 that the local broadcast station has not been received, the process proceeds to step ST37 to return to the normal television broadcast that has been viewed.

  Thus, according to the present embodiment, when a local broadcast is received by an information processing device (portable terminal device), a local broadcast station is automatically searched for its presence, or the local broadcast is automatically transmitted. Can be received. Further, only one system of broadcast receiving circuit (TV tuner) is required. Also, unlike a wireless infrastructure such as a wireless LAN or Bluetooth, local broadcasting can send data to a plurality of people at the same time, and does not require a packet usage fee such as a telephone.

  The information processing apparatus to which the present invention is applied includes, for example, an acceleration detection unit 106 and a geomagnetism detection unit 108 as shown in FIG. 1, or a highly directional antenna for broadcasting reception. If necessary, information on the direction of movement of the user carrying the information processing device and information on the direction required (for example, information on the up train at the station and information on the down train) may be displayed as necessary. it can. Further, for example, a common channel may be provided for each station platform so that the same local broadcast can be received at any position on the platform.

  Further, the local broadcast channel may be displayed in the service area of the local broadcast station so that the channel can be visually confirmed, or an RFID tag may be installed in the vicinity of the service area of the local broadcast station. Or conversely, location information is not intentionally registered and displayed, but it is also possible to find a place where radio waves are emitted from the local broadcasting station, and tie coupons to services such as issuing coupons to those who find them. . As described above, the application of the present invention can be combined with various services by combining various known methods.

(Appendix 1)
Local broadcast recognition means having a wireless interface for recognizing a local broadcast service area and receiving a radio signal from a wireless transmission device installed in the vicinity of the local broadcast service area;
Receiving setting means for setting the local broadcast to be receivable according to the output of the local broadcast recognizing means,
The information processing apparatus, wherein the reception setting means sets the channel of the local broadcast given through the wireless interface to be receivable.

(Appendix 2)
In the information processing apparatus according to attachment 1,
The local broadcast is a local television broadcast, and
The information processing apparatus is a mobile terminal apparatus having a communication function.

(Appendix 3)
In the information processing apparatus according to attachment 1,
The information processing apparatus characterized in that the wireless is an infrared ray or a wireless LAN.

(Appendix 4)
In the information processing apparatus according to attachment 1,
The local broadcast recognizing means comprises a wireless interface for receiving a wireless signal from a wireless transmission device installed in the vicinity of the local broadcast service area,
The information processing apparatus, wherein the reception setting means sets the channel of the local broadcast given through the wireless interface to be receivable.

(Appendix 5)
In the information processing device according to attachment 4,
The information processing apparatus, wherein the wireless interface is connected to a wireless LAN or a short-range information communication apparatus.

(Appendix 6)
The information processing apparatus according to attachment 1, wherein the information processing apparatus includes a GPS,
The local broadcast recognizing means recognizes the service area of the local broadcast by comparing the position information detected by the GPS and the position information of the service area of the local broadcast,
The information processing apparatus, wherein the reception setting means sets the local broadcast channel corresponding to the position information detected by the GPS to be receivable.

(Appendix 7)
The information processing apparatus according to appendix 6, wherein the location information of the service area of the local broadcast is registered in advance in a management server of the base station.

(Appendix 8)
In the information processing apparatus according to attachment 1,
The local broadcast recognizing means recognizes a local broadcast other than a wide-area broadcast registered in advance by performing a channel search,
The information processing apparatus, wherein the reception setting means sets the recognized local broadcast channel to be receivable.

(Appendix 9)
In the information processing device according to attachment 8,
The channel search for recognizing the local broadcast is performed at a timing that does not affect the viewing of the wide area broadcast when the wide area broadcast is viewed by the information processing apparatus. Processing equipment.

(Appendix 10)
In the information processing device according to attachment 8,
A channel search for recognizing the local broadcast is performed by a tuner provided exclusively for the search.

(Appendix 11)
In the information processing apparatus according to attachment 1,
The local broadcast recognizing means comprises switch means that is operated by recognizing that the information processing apparatus is in the service area of the local broadcast.

(Appendix 12)
In the information processing apparatus according to attachment 1,
The information processing apparatus, wherein the local broadcast recognizing means recognizes a service area of the local broadcast by detecting a decrease in electric field strength of a specific wide area broadcast.

(Appendix 13)
In the information processing device according to attachment 11 or 12,
The reception setting unit, when recognizing the service area of the local broadcast, reduces reception sensitivity to identify wide-area broadcast and local broadcast, and sets the local broadcast channel to be receivable. Processing equipment.

(Appendix 14)
14. A local broadcast system comprising a local broadcast station that transmits a local broadcast to the information processing apparatus according to any one of appendices 1 to 13.

(Appendix 15)
The local broadcast system according to appendix 14, further comprising an infrared transmission device or a wireless transmission device installed in the vicinity of the local broadcast service area that causes the information processing device to recognize the local broadcast service area. A featured local broadcast system.

(Appendix 16)
In the local broadcasting system according to attachment 14, the local broadcasting system is installed in a department store or large-scale mass sales store having a plurality of stores or sales floors, a shopping street, a station, an amusement park, or an office building. A local broadcast system for providing various broadcast target information on the information processing apparatus.

(Appendix 17)
A broadcast receiving circuit provided in an information processing device,
A broadcast receiving circuit characterized in that when a service area of a local broadcast is recognized, the reception sensitivity is lowered to distinguish wide-area broadcast from local broadcast.

(Appendix 18)
A high frequency receiver having a high frequency amplifier for receiving broadcasts;
A demodulation circuit for demodulating the output of the high-frequency receiving unit;
A broadcast receiving circuit comprising: gain control means for discriminating between wide-area broadcast and local broadcast by reducing the gain of the high-frequency amplifier when a local broadcast service area is recognized.

(Appendix 19)
A broadcast receiving circuit provided in an information processing device and capable of receiving a wide-area broadcast and a local broadcast by switching,
When a local broadcast service area is recognized, a means for searching for a channel with reduced reception sensitivity;
Means for discriminating between wide-area broadcasting and local broadcasting;
A broadcast receiving circuit comprising: means for returning reception sensitivity and setting the recognized local broadcast channel to be receivable when the local broadcast is recognized.

(Appendix 20)
In the broadcast receiving circuit described in appendix 19,
Recognizing the service area of the local broadcast is performed by receiving an output of switch means operated by recognizing that the information processing apparatus is in the service area of the local broadcast.

(Appendix 21)
In the broadcast receiving circuit described in appendix 19,
Recognizing the service area of the local broadcast is performed by detecting a decrease in electric field strength of a specific wide area broadcast.

(Appendix 22)
A tuner module, wherein the broadcast receiving circuit according to any one of appendices 17 to 21 is configured as a tuner module incorporated in an information processing apparatus.

  The present invention relates to an information processing device, a local broadcast system, and a broadcast receiving circuit, and various broadcasts such as a mobile phone device with a TV broadcast receiving function (mobile phone with TV), a PDA, a notebook computer, and a portable game machine. The present invention can be widely applied to information processing apparatuses having a reception function.

It is a block diagram which shows roughly the whole structure of an example of the information processing apparatus with which this invention is applied. It is a figure for demonstrating the detection of the present position and movement state by the information processing apparatus shown in FIG. It is a figure for demonstrating the automatic detection of the local broadcasting station by the information processing apparatus which concerns on this invention. It is a flowchart for demonstrating an example of the automatic detection of the local broadcasting station by the information processing apparatus which concerns on this invention. It is a flowchart for demonstrating the other example of the automatic detection of the local broadcasting station by the information processing apparatus which concerns on this invention. It is a figure showing roughly an example of a department store to which a local broadcasting system concerning the present invention is applied. It is a figure which shows the example of the screen displayed on the information processing apparatus which concerns on this invention in the local broadcast system shown in FIG. It is a block diagram which shows roughly the broadcast receiving circuit in an example of the information processing apparatus which concerns on this invention. It is a flowchart for demonstrating an example of the detection process of the local broadcasting station in the broadcast receiving circuit shown in FIG.

Explanation of symbols

1 Broadcast receiving circuit (tuner module)
10 RF receiver circuit 10a amplifier 11 demodulator circuit 12 general-purpose port (CPU)
13 Transistor 13a, 13b Resistor 14 Antenna 100, 100 'Mobile terminal device with TV receiving function (mobile phone with TV)
101 Broadcast receiving unit 102 RF unit for communication 103 CPU / DSP
104, 104 ′ IrDA section 105 WLAN / BT section 106 Acceleration detection section 107 GPS section 108 Geomagnetism detection section 109 Display 110 Numeric keypad 111 AIU
112 Speakers 113 Microphones 200 Broadcasting stations for wide-area broadcasting 211 to 213 Cell phone base stations 221 to 223 GPS satellites 230 Local broadcast station management servers 241 and 242 Local broadcast stations 300 Upward escalators

Claims (4)

Local broadcast recognition means for recognizing the local broadcast service area;
A wireless interface for receiving a wireless signal from a wireless transmission device installed near the service area of the local broadcast;
Receiving setting means for setting the local broadcast to be receivable according to the output of the local broadcast recognizing means,
The local broadcast recognizing means is triggered when the service area of the local broadcast is recognized or when a decrease in the electric field strength of the wide area broadcast is detected by the receiving circuit that receives the wide area broadcast and the local broadcast. local broadcasters searches scanning hard to lower the reception sensitivity of the reception circuit,
The reception setting means receives the channel information of the local broadcast given through the wireless interface and sets the local broadcast of the channel to be receivable, or is searched by a scan performed with the reception sensitivity lowered. An information processing apparatus configured to receive a local broadcast from the local broadcast station. The information processing apparatus according to claim 1,
The information processing apparatus according to claim 1, wherein the wireless interface is an infrared ray or a wireless LAN.   A local broadcast system comprising a local broadcast station that transmits a local broadcast to the information processing apparatus according to claim 1. A broadcast receiving circuit provided in an information processing device and capable of receiving a wide-area broadcast and a local broadcast by switching,
Local broadcast recognition means for recognizing the local broadcast service area;
Means for searching for a channel with reduced reception sensitivity when the service area of the local broadcast is recognized;
Means for searching for a channel in the low sensitivity mode in which the reception sensitivity is lowered, detecting whether a broadcast is received, identifying a local broadcast when the broadcast is received, and identifying a wide-area broadcast when the broadcast is not received When,
A broadcast receiving circuit comprising: means for returning the reception sensitivity to a normal state when a local broadcast is identified, and setting the identified local broadcast to be receivable.

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