JP2006074521A - Multi-system digital television broadcast receiving terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiving terminal more quickly and accurately specifying a television broadcast system including an unadapted system and an unknown system. <P>SOLUTION: In the broadcast receiving terminal (TR), a broadcast receiving part (103) receives a digital television broadcast signal corresponding to a plurality of broadcast systems, a storing part (102) stores a correspondence relation between a country code and broadcast system data, a selecting part (101) acquires a country code, a calculating part (104) retrieves the broadcast system data from the storing part (102) by the country code, and communication equipment (105) transmits the broadcast system data to a broadcast receiver (103). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a digital television broadcast receiver, and more particularly to an international broadcast receiver.

Due to technological changes from analog to digital, small portable devices are changing from single-function devices to multi-function devices. In addition, terrestrial digital television broadcast receivers are becoming more and more compact and can be considered to be incorporated into mobile phones and the like. As the international roaming service for mobile phones progresses, the concept that the same terminal should be used anywhere in the world is being established.
JP 2002-325271 A International Publication No. 02/015630 Pamphlet JP 2001-103446 A Special table 2003-513515 gazette "Data broadcasting technology reader" Ohmsha, Chapter 10 Trends in other countries International standard ITU-T (www.itu.int) Announcement of Vodafone, a mobile phone service provider (http://www.vodafone.jp/japanese/service/vgs/main_f.html

  In order to enjoy a broadcast program freely anywhere in the world, for example, to watch a broadcast program at a travel destination, it is necessary to specify a broadcast system in the corresponding country or region and switch the reception system inside the broadcast receiver. However, digital TV broadcasting systems tend to differ from country to country. Furthermore, diversification of modulation methods and encryption methods is also progressing. For this reason, it is very difficult to automatically specify the broadcasting system using the conventional broadcast wave scanning method. When manually selecting a receiving method, it is necessary to know in advance the broadcasting method for each country or region, or to try different broadcasting methods one by one, which is very inconvenient for the user. Therefore, it aims at providing the broadcast receiving terminal which can specify the television broadcast system including an unsupported and an unknown system more rapidly and accurately.

A broadcast receiving unit for receiving a digital television broadcast signal corresponding to a plurality of broadcast systems;
A storage unit for storing the correspondence between the country code and the broadcasting system data;
A selection section for obtaining a country code;
A calculation unit for retrieving broadcast format data from the storage unit by country code;
A portable broadcast receiving terminal comprising communication means for transmitting broadcast format data to a broadcast receiving unit.

  TV broadcasting systems including unsupported and unknown systems can be identified more quickly and accurately. In addition, a complicated electronic circuit for detecting a broadcast system from broadcast radio waves is not required. This makes it easy to enjoy TV broadcasting anywhere in the world on the same terminal. Furthermore, an internationally compatible television receiver can be manufactured at a lower price.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. A broadcast receiving terminal according to an embodiment of the present invention will be described with reference to FIG. Note that only the receiving unit TR of the receiving terminal is shown in FIG. The reception unit TR includes a selection unit 101, a storage unit 102, a DTV broadcast signal reception unit 103, a calculation unit 104, and a communication device 105. The selection unit 101 acquires a country code. The storage unit 102 holds a country code and broadcasting method data. The DTV broadcast signal receiving unit 103 receives a television broadcast signal corresponding to a plurality of broadcast methods. The arithmetic unit 104 searches the storage unit 102 for broadcast method data using the country code. The communication device 105 informs the receiving unit 103 of the broadcasting method. Note that the calculation unit 104 includes a search and other programs.

  The selection unit 101 includes a tuner 106 and an arithmetic device 107. DTV broadcast signal receiving section 103 includes switching section 108 and playback section 109.

  When using radio waves from the mobile phone network, the tuner 106 of the selection unit 101 receives information on a specific broadcast channel defined in the specific mobile phone system. For example, in the case of GSM, a broadcast channel called BCCH can be received by tuning to a specific frequency. By receiving the System Information Type 3 Message broadcast there, a so-called BCCH-MCC (counting system of country / region identification defined by ITU-T E.212 Annex A) can be acquired.

  Specifically, first, the Area Area Information can be received in the format shown in FIG. For example, the country code can be obtained by extracting the MCC portion from the format shown in FIG.

  Next, the calculation unit 104 obtains the country code from the selection unit 101, searches the storage unit 102, and finds information on the broadcasting system. The data is passed to the DTV broadcast signal receiving unit 103 through the communication device 105. If not found, the calculation unit 104 presents an error message to the user. In the DTV broadcast signal receiving unit 103, the switching unit 108 instructs the tuner 106 of the selection unit 101 to specify a frequency band and the calculation unit 104 to instruct AVCodec.

  With reference to FIG. 3, the case where the broadcast receiving terminal according to the present invention is configured as a multi-function device integrated with a mobile phone will be described. The communication unit (DTV broadcast signal receiving unit 103) of the mobile phone executes the function of the selection unit 101. In addition, this structure shows the structure on a logic, and it is thought that the calculating part 104 and the memory | storage part 102 are comprised integrally with the selection part 101 and the DTV broadcast signal receiving part 103 on mounting. The communication device 105 is also a logic device, and may be configured by a single or a plurality of communication means (various BUS or wired / wireless communication technology).

  FIG. 4 shows a configuration of a broadcast receiving terminal when a user inputs a country code. As shown in the figure, a dial / push key 201, a cross key 202, a keyboard 203, a list box 204, and a text box 205 are newly added to the broadcast receiving terminal in addition to the above-described components. . The list box 204 stores country names that can be selected by the user presented to the user. Using the text box 205, the user can directly input the country code. Thus, the user can input the country code to the broadcast receiving terminal using the list box 204 or the text box 205 using any of the dial / push key 201, the cross key 202, and the keyboard 203.

  The present invention is useful for a multi-country terrestrial digital broadcast receiving terminal or the like.

The block which shows the structure of the broadcast receiving terminal which concerns on embodiment of this invention Explanatory drawing which shows an example of the format of Location Area Information FIG. 1 is an explanatory diagram when the DTV broadcast signal receiving unit is configured integrally with a mobile phone terminal in the broadcast receiving terminal shown in FIG. FIG. 1 is an explanatory diagram when the broadcast receiving terminal shown in FIG. 1 is configured so that a user can input a country code.

Explanation of symbols

101: Selection unit 102: Storage unit 103: DTV broadcast signal reception unit 104: Calculation unit 105: Communication device 106: Tuner 107: Calculation device 108: Switching unit 109: Playback unit

Claims (5)

A broadcast receiving unit for receiving a digital television broadcast signal corresponding to a plurality of broadcast systems;
A storage unit for storing the correspondence between the country code and the broadcasting system data;
A selection section for obtaining a country code;
A calculation unit for retrieving broadcast format data from the storage unit by country code;
A portable broadcast receiving terminal comprising communication means for transmitting broadcast format data to a broadcast receiving unit.   The selection unit receives a signal transmitted from a mobile communication network, allocates a country code from the received signal, and discloses the country code in a form that can be accessed by the calculation unit. The broadcast receiving terminal according to 1.   The broadcast receiving terminal according to claim 1, wherein the selection unit presents a country name to a user and obtains a country code according to the user's input.   The broadcast receiving terminal according to claim 1, wherein the broadcast receiving unit can input a reception instruction of a specific broadcast method from the outside.   The broadcast receiving terminal according to claim 1, wherein information stored in the storage unit can be acquired and updated from outside.

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