JP4621125B2 - Digital broadcast receiver - Google Patents

Digital broadcast receiver Download PDF

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JP4621125B2
JP4621125B2 JP2005357600A JP2005357600A JP4621125B2 JP 4621125 B2 JP4621125 B2 JP 4621125B2 JP 2005357600 A JP2005357600 A JP 2005357600A JP 2005357600 A JP2005357600 A JP 2005357600A JP 4621125 B2 JP4621125 B2 JP 4621125B2
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孝敏 城杉
真一 村上
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Hitachi Ltd
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Description

本発明はデジタル放送を受信するデジタル放送受信装置に関するものであり、特に階層伝送により同一内容の番組を高品質な信号と低品質な信号の階層に分けて同時に伝送された放送を受信するのに好適なデジタル放送受信装置に関する。   The present invention relates to a digital broadcast receiving apparatus for receiving a digital broadcast, and particularly for receiving a broadcast that is transmitted simultaneously by dividing a program having the same content into a high-quality signal layer and a low-quality signal layer by hierarchical transmission. The present invention relates to a suitable digital broadcast receiving apparatus.

日本の地上デジタルテレビジョン（以下、ＩＳＤＢ−Ｔと略す）放送では１３個のセグメントを最大３階層に分けて伝送することが可能であり、その中でも１セグメントを使用した携帯受信用放送と１２セグメントを使用した固定受信用放送の２階層伝送方式により、同一内容の番組の放送（以下、サイマル放送と略す）が実施される予定である。図９は、ＩＳＤＢ−Ｔ放送における放送信号の周波数帯域を示す図である。１セグメントを使用する携帯受信用放送信号は、周波数帯の中心に配置して伝送する。携帯受信装置は、この中心の周波数帯だけを抽出するだけで受信・復調することが可能である（これを部分受信という）。残りの１２セグメントは、伝送時に周波数インターリーブがかけられている。一般に携帯受信用放送では、固定受信用放送よりも伝送路妨害に強い伝送方式が採用されている。反面、固定受信用放送よりも伝送できるデータ容量が少ないことから、固定受信用放送よりも映像品質や音声品質が劣っている。   In Japanese terrestrial digital television (hereinafter abbreviated as ISDB-T) broadcasting, it is possible to divide and transmit 13 segments into a maximum of 3 layers, among which mobile reception broadcasting using 1 segment and 12 segments Broadcasting of programs with the same content (hereinafter abbreviated as simulcast) is scheduled to be carried out by a two-layer transmission system for fixed reception broadcasting using. FIG. 9 is a diagram illustrating a frequency band of a broadcast signal in ISDB-T broadcasting. A mobile reception broadcast signal using one segment is transmitted at the center of the frequency band. The portable receiving device can receive and demodulate only by extracting only this central frequency band (this is called partial reception). The remaining 12 segments are frequency interleaved during transmission. In general, mobile reception broadcasting employs a transmission scheme that is more resistant to transmission path interference than fixed reception broadcasting. On the other hand, since the amount of data that can be transmitted is smaller than that of fixed reception broadcasting, the video quality and audio quality are inferior to those of fixed reception broadcasting.

特許文献１には、２階層放送を切り替えて受信するデジタル放送受信機の例が開示されている。この受信機では、映像信号を表示する表示部で提示される画面サイズが、設定されたサイズか或いはこれよりも大きい場合には１３セグメント放送（固定受信用放送）を受信するように制御し、設定されたサイズよりも小さい場合には１セグメント放送（携帯受信用放送）を受信するように制御するものである。   Patent Document 1 discloses an example of a digital broadcast receiver that switches and receives two-layer broadcasting. In this receiver, when the screen size presented on the display unit for displaying the video signal is a set size or larger than this, control is performed so as to receive 13-segment broadcasting (fixed reception broadcasting), When it is smaller than the set size, control is performed so as to receive one-segment broadcast (mobile reception broadcast).

特開２００４−２８９７１２号公報JP 2004-289712 A

上記特許文献１によれば、受信機の表示部の画面サイズに応じて固定受信用放送か携帯受信用放送とを切り替えるもので、ユーザの使用形態に応じて表示品質を切り替えることができる。しかしながら、受信系統は選択した１系統の信号を受信して表示するだけである。階層放送では、複数系統で同一内容の番組の放送が同時になされるものであり、このサイマル放送の特徴を生かした新たな機能を持つ受信装置が要望される。例えば、複数系統の受信が可能な受信装置とすれば、親画面と子画面などの複数番組表示において、画面切替等において使い勝手の向上が期待できる。しかしながら、複数番組表示を行うためには画面数だけ受信部の数を増設せねばならず、単純には受信機が高価となってしまう。   According to Patent Document 1, switching between fixed reception broadcasting and portable reception broadcasting is performed according to the screen size of the display unit of the receiver, and display quality can be switched according to a user's usage. However, the receiving system only receives and displays one selected signal. In hierarchical broadcasting, programs of the same content are broadcast simultaneously in a plurality of systems, and a receiving device having a new function that makes use of the characteristics of this simultaneous broadcasting is desired. For example, if the receiving apparatus is capable of receiving a plurality of systems, it is expected that the usability is improved in screen switching or the like in displaying a plurality of programs such as a main screen and a sub screen. However, in order to display a plurality of programs, it is necessary to increase the number of receiving units by the number of screens, and the receiver is simply expensive.

本発明は、携帯受信用放送と固定受信用放送のような伝送容量または伝送帯域の異なる階層構造方式の放送を受信する際、高機能で使い勝手の良い、かつ低価格なデジタル放送受信装置を提供することを目的とする。   The present invention provides a high-performance, easy-to-use and low-cost digital broadcast receiving apparatus for receiving broadcasts of hierarchical structure systems having different transmission capacities or transmission bands, such as portable reception broadcasts and fixed reception broadcasts. The purpose is to do.

上記目的を達成するために、本発明のデジタル放送受信装置は、同一番組に関して、第１の放送と該第１の放送より伝送容量または伝送帯域の少ない第２の放送とが階層構造を持って同時に送信されるデジタル放送を受信する装置であって、第１の放送から所望の番組を受信して第１の映像信号を生成する第１の受信部と、第２の放送から所望の番組を受信して第２の映像信号を生成する第２の受信部と、第１の映像信号と第２の映像信号を合成して同一の映像表示部に表示させる映像合成部とを備え、映像合成部は、第１の映像信号を映像表示部の第１の画面に表示させ、第２の映像信号を第１の画面よりも画面サイズの小さい第２の画面に表示させる。   In order to achieve the above object, in the digital broadcast receiving apparatus of the present invention, for the same program, the first broadcast and the second broadcast having a transmission capacity or transmission band smaller than that of the first broadcast have a hierarchical structure. An apparatus for receiving a digital broadcast transmitted simultaneously, a first receiving unit that receives a desired program from the first broadcast and generates a first video signal, and a desired program from the second broadcast A second receiver for receiving and generating a second video signal; and a video synthesizer for synthesizing the first video signal and the second video signal for display on the same video display unit. The unit displays the first video signal on the first screen of the video display unit, and displays the second video signal on the second screen having a screen size smaller than that of the first screen.

本発明のデジタル放送受信装置は、さらに、デジタル放送の第２の放送から所望の番組を受信して第３の映像信号を生成する第３の受信部を備え、映像合成部は、上記第１の映像信号を映像表示部の第１の画面に表示させ、上記第２の映像信号または第３の映像信号を第１の画面よりも画面サイズの小さい第２の画面または第３の画面に表示させる。   The digital broadcast receiving apparatus of the present invention further includes a third receiving unit that receives a desired program from the second broadcast of the digital broadcast and generates a third video signal. Are displayed on the first screen of the video display unit, and the second video signal or the third video signal is displayed on the second screen or the third screen having a screen size smaller than that of the first screen. Let

本発明のデジタル放送受信装置において、前記映像表示部の前記第１の画面と前記第２の画面に表示されている番組を入れ替える場合、第１の画面には第１の受信部からの番組Ａを表示し、第２の画面には第２の受信部からの番組Ｂを表示し、かつ第３の受信部は番組Ａを受信している第１の状態から、第１の受信部にて番組Ｂを受信して第１の画面に表示し、第２の画面には第３の受信部からの番組Ａを表示する第２の状態に切り替える。   In the digital broadcast receiving apparatus of the present invention, when the programs displayed on the first screen and the second screen of the video display unit are switched, the program A from the first receiving unit is displayed on the first screen. The second screen displays the program B from the second receiving unit, and the third receiving unit receives the program A from the first state in the first receiving unit. The program B is received and displayed on the first screen, and the second screen is switched to the second state in which the program A from the third receiving unit is displayed.

本発明によれば、階層構造方式の放送を受信するための高機能で使い勝手の良い、かつ低価格なデジタル放送受信装置を提供することができる。   According to the present invention, it is possible to provide a high-performance, easy-to-use and low-cost digital broadcast receiving apparatus for receiving a broadcast of a hierarchical structure system.

以下、本発明の実施の形態として、伝送容量または伝送帯域の異なる携帯受信用放送と固定受信用放送とが階層構造方式にてサイマル放送されているＩＳＤＢ−Ｔ放送を受信するデジタル放送受信装置を例に、図面を用いて詳細に説明する。   Hereinafter, as an embodiment of the present invention, a digital broadcast receiver for receiving ISDB-T broadcast in which portable reception broadcasts and fixed reception broadcasts having different transmission capacities or transmission bands are simulcast in a hierarchical structure system is provided. An example will be described in detail with reference to the drawings.

図１は、本発明に係るデジタル放送受信装置の第１の実施例を示すブロック図である。１０１はアンテナ、１０２は増幅分配部、１０３は１３セグメントからなる固定受信用放送の受信部（以下、フルセグ受信部と略す）、１０４は１セグメントからなる携帯受信用放送の受信部（以下１セグ受信部と略す）、１０５は映像信号合成部、１０６は映像表示部、１０７は音声信号切替部、１０８は音声出力部、１１８は制御部、１１９は操作信号入力部である。なお、映像表示部１０６と音声出力部１０８は具体的にはディスプレイやスピーカであり、外部装置として接続してもよい。フルセグ受信部１０３は、フルセグ選局部１０９、フルセグ復調部１１０、デスクランブル部１１１、フルセグ側のデマックス部１１２、フルセグ側のデコード部１１３で構成される。１セグ受信部１０４は、１セグ選局部１１４、１セグ復調部１１５、１セグ側のデマックス部１１６、１セグ側のデコード部１１７で構成される。   FIG. 1 is a block diagram showing a first embodiment of a digital broadcast receiving apparatus according to the present invention. 101 is an antenna, 102 is an amplification / distribution unit, 103 is a receiving unit for fixed reception broadcasting (hereinafter abbreviated as a full segment receiving unit) consisting of 13 segments, and 104 is a receiving unit for portable receiving broadcasting consisting of one segment (hereinafter referred to as 1 segment). (Abbreviated as a receiving unit), 105 is a video signal synthesis unit, 106 is a video display unit, 107 is an audio signal switching unit, 108 is an audio output unit, 118 is a control unit, and 119 is an operation signal input unit. The video display unit 106 and the audio output unit 108 are specifically a display or a speaker, and may be connected as an external device. The full segment receiving unit 103 includes a full segment selecting unit 109, a full segment demodulating unit 110, a descrambling unit 111, a full segment demax unit 112, and a full segment decoding unit 113. The 1-segment receiving unit 104 includes a 1-segment channel selection unit 114, a 1-segment demodulation unit 115, a 1-segment side demax unit 116, and a 1-segment side decoding unit 117.

このように、受信系統として、フルセグ専用の受信部１０３と１セグ専用の受信部１０４の２系統を備える。ここに携帯受信用放送（１セグ放送）は、固定受信用放送（フルセグ放送）よりも伝送周波数帯域が狭くまた伝送データ容量が少ない。よって１セグ受信部１０４は、フルセグ受信部１０３よりも周波数帯域が狭い分だけ構成・機能を簡素化して装置全体の低価格化を図ることができる。   As described above, the receiving system includes two systems, the receiving unit 103 dedicated to full segments and the receiving unit 104 dedicated to one segment. Here, the mobile reception broadcast (1 segment broadcast) has a narrower transmission frequency band and a smaller transmission data capacity than the fixed reception broadcast (full segment broadcast). Therefore, the 1-seg receiving unit 104 can simplify the configuration and functions corresponding to the narrower frequency band than the full-seg receiving unit 103, thereby reducing the cost of the entire apparatus.

以下、本実施例の受信装置の動作を説明する。アンテナ１０１で受信されたＩＳＤＢ−Ｔ放送は、増幅分配部１０２で増幅されフルセグ受信部１０３と１セグ受信部１０４に分配される。フルセグ受信部１０３では、フルセグ選局部１０９で所望の番組の１３セグメント周波数帯域を抽出しフルセグ復調部１１０に出力する。フルセグ復調部１１０では、１３セグメントのＩＳＤＢ−Ｔ信号を復調し、トランスポートストリーム（以下、ＴＳと略す）信号をデスクランブル部１１１に出力する。デスクランブル部１１１では、著作権保護のためにスクランブルのかけられているＴＳ信号のスクランブルを解除してデマックス部１１２に出力する。デマックス部１１２では、所望の圧縮された映像信号や圧縮された音声信号のデジタル信号を抽出しデコード部１１３に出力する。デコード部１１３では、圧縮された映像信号や圧縮された音声信号を復号し、復号された映像信号は映像信号合成部１０５に、復号された音声信号は音声切替部１０７に出力する。   Hereinafter, the operation of the receiving apparatus of this embodiment will be described. The ISDB-T broadcast received by the antenna 101 is amplified by the amplification / distribution unit 102 and distributed to the full-segment reception unit 103 and the 1-segment reception unit 104. In the full segment receiving unit 103, the full segment selecting unit 109 extracts the 13 segment frequency band of a desired program and outputs it to the full segment demodulating unit 110. Full segment demodulator 110 demodulates the 13-segment ISDB-T signal and outputs a transport stream (hereinafter abbreviated as TS) signal to descrambler 111. The descrambling unit 111 releases the scrambled TS signal, which is scrambled for copyright protection, and outputs the descrambled unit 112 to the demux unit 112. The demux unit 112 extracts a desired compressed video signal or compressed digital signal of the audio signal and outputs it to the decoding unit 113. The decoding unit 113 decodes the compressed video signal and the compressed audio signal, and outputs the decoded video signal to the video signal synthesis unit 105 and the decoded audio signal to the audio switching unit 107.

他方、１セグ受信部１０４では、１セグ選局部１１４で所望の番組の携帯受信用放送である１セグメント部分の周波数帯域を抽出・部分受信し１セグ復調部１１５に出力する。１セグ復調部１１５では、ＩＳＤＢ−Ｔ信号の携帯受信用放送である１セグメントを復調しＴＳ信号をデマックス部１１６に出力する。デマックス部１１６では、所望の圧縮された映像信号や圧縮された音声信号のデジタル信号を抽出してデコード部１１７に出力する。デコード部１１７では、圧縮された映像信号や圧縮された音声信号を復号し、復号された映像信号は映像信号合成部１０５に、復号された音声信号は音声信号切替部１０７に出力する。   On the other hand, in the 1-segment receiving unit 104, the 1-segment selecting unit 114 extracts and partially receives the frequency band of the 1-segment portion that is a broadcast for mobile reception of a desired program, and outputs it to the 1-segment demodulation unit 115. The 1-segment demodulator 115 demodulates one segment, which is a mobile reception broadcast of the ISDB-T signal, and outputs a TS signal to the demux unit 116. The demux unit 116 extracts a desired compressed video signal or a digital signal of the compressed audio signal and outputs the digital signal to the decoding unit 117. The decoding unit 117 decodes the compressed video signal and the compressed audio signal, and outputs the decoded video signal to the video signal synthesis unit 105 and the decoded audio signal to the audio signal switching unit 107.

制御部１１８は入力端子１１９からの操作信号により制御され、フルセグ受信部１０３と１セグ受信部１０４に対して、それぞれが所望の番組を選局するための制御信号を送る。映像信号合成部１０５では、制御部１１８からの制御信号を受け、フルセグ受信部１０３からの映像信号（番組）と１セグ受信部１０４からの映像信号（番組）を、それぞれ親画面（以下、メイン画面）と子画面（以下、サブ画面）の信号として合成し、映像表示部１０６に出力する。映像表示部１０６では、合成された映像信号からメイン画面とサブ画面の映像を表示する。他方、音声信号切替部１０７では、制御部１１８からの制御信号を受け、フルセグ受信部１０３からの音声信号と１セグ受信部１０４からの音声信号を切り替えて（選択して）音声出力部１０８から出力する。   The control unit 118 is controlled by an operation signal from the input terminal 119, and sends a control signal for selecting a desired program to the full segment receiving unit 103 and the one segment receiving unit 104. The video signal synthesis unit 105 receives the control signal from the control unit 118, and converts the video signal (program) from the full-seg receiving unit 103 and the video signal (program) from the 1-seg receiving unit 104 into the parent screen (hereinafter referred to as main screen). Screen) and sub-screen (hereinafter referred to as sub-screen) signals, and outputs them to the video display unit 106. The video display unit 106 displays the video of the main screen and the sub screen from the synthesized video signal. On the other hand, the audio signal switching unit 107 receives a control signal from the control unit 118 and switches (selects) the audio signal from the full segment receiving unit 103 and the audio signal from the 1 segment receiving unit 104 from the audio output unit 108. Output.

図２は、映像表示部１０６に表示される画面構成の一例を示す図である。２０１がメイン画面、２０２がサブ画面である。サブ画面２０２は１セグ受信部１０４からの映像信号を表示するので、映像品質に合わせて、メイン画面２０１のサイズよりも小さくしている。なお、図２の例ではメイン画面２０１の中にサブ画面２０２を表示する構成になっているが、これに限らず、メイン画面とサブ画面が別々に表示され、メイン画面のサイズがサブ画面のサイズよりも同等以上で表示されてもよい。   FIG. 2 is a diagram illustrating an example of a screen configuration displayed on the video display unit 106. 201 is a main screen and 202 is a sub-screen. Since the sub screen 202 displays the video signal from the 1-segment receiving unit 104, it is made smaller than the size of the main screen 201 in accordance with the video quality. In the example of FIG. 2, the sub screen 202 is displayed in the main screen 201. However, the present invention is not limited to this, and the main screen and the sub screen are displayed separately, and the size of the main screen is the size of the sub screen. It may be displayed in the same size or larger than the size.

図２の画面表示において、入力端子１１９からのユーザ操作信号により、以下の基本操作が可能である。   In the screen display of FIG. 2, the following basic operations can be performed by a user operation signal from the input terminal 119.

（１）１画面表示の場合。フルセグ受信部１０３からの映像信号Ａを映像表示部１０６のメイン画面２０１に表示するとともに、フルセグ受信部１０３からの音声信号を音声出力部１０８から出力する。   (1) In the case of single screen display. The video signal A from the full segment receiving unit 103 is displayed on the main screen 201 of the video display unit 106, and the audio signal from the full segment receiving unit 103 is output from the audio output unit 108.

（２）２画面表示の場合。フルセグ受信部１０３からの映像信号（番組）Ａを映像表示部１０６のメイン画面２０１に表示し、１セグ受信部１０４からの映像信号（番組）Ｂを映像表示部１０６のサブ画面２０２に表示するとともに、フルセグ受信部１０３からの音声信号を音声出力部１０８から出力する。なお、この時１セグ受信部１０４からの音声信号を、音声出力部１０８とは別に設けた例えばヘッドフォン端子などから出力してもよい。また、この時表示するメイン画面２０１（すなわちフルセグ受信部１０３）とサブ画面２０２（すなわち１セグ受信部１０４）は独立に番組選局が可能である。   (2) In the case of two-screen display. The video signal (program) A from the full segment receiving unit 103 is displayed on the main screen 201 of the video display unit 106, and the video signal (program) B from the 1 segment receiving unit 104 is displayed on the sub screen 202 of the video display unit 106. At the same time, the audio signal from the full segment receiving unit 103 is output from the audio output unit 108. At this time, the audio signal from the 1-segment receiver 104 may be output from, for example, a headphone terminal provided separately from the audio output unit 108. The main screen 201 (that is, the full segment receiving unit 103) and the sub screen 202 (that is, the one segment receiving unit 104) that are displayed at this time can select programs independently.

（３）２画面表示で番組を移動する場合。サブ画面２０２で表示されていた番組Ｂをメイン画面２０１に表示（移動）し、サブ画面２０２を消去する。これは、サブ画面２０２で表示されていた番組Ｂの選局情報によりフルセグ選局部１０９などを制御して、フルセグ受信部１０３にて番組Ｂを受信する。そして映像信号合成部１０５は、フルセグ受信部１０３からの映像信号Ｂをメイン画面とする１画面表示をする。   (3) When moving a program in a two-screen display. The program B displayed on the sub screen 202 is displayed (moved) on the main screen 201 and the sub screen 202 is deleted. The full segment selection unit 109 and the like are controlled by the channel selection information of the program B displayed on the sub screen 202, and the full segment reception unit 103 receives the program B. Then, the video signal synthesis unit 105 performs a one-screen display using the video signal B from the full segment reception unit 103 as a main screen.

音声信号切替部１０７は、常にフルセグ受信部１０３からの音声信号を出力する。または、まず１セグ受信部１０４からの音声信号Ｂに切り替え、その後映像信号合成部１０５が映像信号Ｂをメイン画面に表示するタイミングに同期して、フルセグ受信部１０３からの音声信号Ｂに切り替える。なおこの時、フルセグ受信部１０３と１セグ受信部１０４との映像信号や音声信号には、時間差ずれのないように調整されていることが望ましい。後者の方法では、フルセグ選局部１０９が番組Ｂを選局動作している期間においても、１セグ受信部１０４からの音声信号Ｂを出力できるので、メイン画面２０１側の番組の音声出力が途切れない効果がある。   The audio signal switching unit 107 always outputs the audio signal from the full segment receiving unit 103. Alternatively, the audio signal B from the 1-seg receiving unit 104 is first switched to, and then the audio signal B from the full-seg receiving unit 103 is switched in synchronization with the timing at which the video signal combining unit 105 displays the video signal B on the main screen. At this time, it is desirable that the video signals and audio signals of the full-segment receiving unit 103 and the 1-segment receiving unit 104 are adjusted so as not to cause a time difference. In the latter method, the audio output of the program on the main screen 201 side is not interrupted because the audio signal B from the 1-segment receiver 104 can be output even during the period when the full-segment selection unit 109 is selecting the program B. effective.

（４）２画面表示で番組を入れ替える場合。メイン画面２０１で表示されていた番組Ａとサブ画面２０２で表示されていた番組Ｂを入れ替える。サブ画面２０２で表示されていた番組Ｂの選局情報によりフルセグ選局部１０９などを制御し、フルセグ受信部１０３にて番組Ｂを受信する。また、メイン画面２０１で表示されていた番組Ａの選局情報により１セグ選局部１１４などを制御して、１セグ受信部１０４にて番組Ａを受信する。その間、映像信号合成部１０５は２画面表示を継続し、音声信号切替部１０７はフルセグ受信部１０３からの音声信号を出力する。   (4) When switching programs in a two-screen display. The program A displayed on the main screen 201 and the program B displayed on the sub screen 202 are switched. The full segment selection unit 109 and the like are controlled by the channel selection information of the program B displayed on the sub screen 202, and the program B is received by the full segment reception unit 103. Further, the 1-segment selection unit 114 and the like are controlled by the channel-selection information of the program A displayed on the main screen 201, and the 1-segment reception unit 104 receives the program A. Meanwhile, the video signal synthesis unit 105 continues the two-screen display, and the audio signal switching unit 107 outputs the audio signal from the full segment receiving unit 103.

他の制御方法を説明する。サブ画面２０２で表示されていた番組Ｂの選局情報によりフルセグ選局部１０９などを制御し、フルセグ受信部１０３にて番組Ｂを選局・受信する。同時に音声信号切替部１０７は、１セグ受信部１０４からの音声信号Ｂに切り替え、フルセグ受信部１０３が番組Ｂを受信できたタイミングに同期してフルセグ受信部１０３からの音声信号Ｂに切り替える。その後、メイン画面２０１で表示されていた番組Ａの選局情報により１セグ選局部１１４などを制御し、１セグ受信部１０４にて番組Ａを選局・受信する。なおこの時、フルセグ受信部１０３と１セグ受信部１０４との映像信号や音声信号には、時間差ずれのないように調整されていることが望ましい。後者の制御方法では、フルセグ選局部１０９が番組Ｂを選局動作している期間においても、１セグ受信部１０４からの音声信号Ｂを出力できるので、メイン画面２０１側の番組の音声出力が途切れない効果がある。   Another control method will be described. The full segment selection unit 109 and the like are controlled by the selection information of the program B displayed on the sub screen 202, and the program B is selected and received by the full segment reception unit 103. At the same time, the audio signal switching unit 107 switches to the audio signal B from the 1 seg receiving unit 104, and switches to the audio signal B from the full seg receiving unit 103 in synchronization with the timing when the full seg receiving unit 103 has received the program B. Thereafter, the 1-segment selection unit 114 and the like are controlled by the channel-selection information of the program A displayed on the main screen 201, and the 1-segment reception unit 104 selects and receives the program A. At this time, it is desirable that the video signal and the audio signal of the full-seg receiving unit 103 and the 1-seg receiving unit 104 are adjusted so that there is no time difference. In the latter control method, the audio output of the program on the main screen 201 side is interrupted because the audio signal B from the 1-segment receiver 104 can be output even during the full-segment selection unit 109 is selecting the program B. There is no effect.

以上、本実施例のデジタル放送受信装置の構成によれば、サブ画面（子画面）表示の機能を１セグ専用の簡単な受信部にて実現できるため、低価格で高機能なデジタル放送受信装置を提供することができる。   As described above, according to the configuration of the digital broadcast receiving apparatus of the present embodiment, the sub-screen (child screen) display function can be realized by a simple receiving unit dedicated to one segment, so that the digital broadcast receiving apparatus is inexpensive and has high functionality. Can be provided.

なお、本実施例は１セグ受信部を１系統設けた構成であるが、１セグ受信部を複数系統設ければ、独立した複数のサブ画面表示（マルチサブ画面表示）とすることができる。   In addition, although a present Example is the structure which provided 1 system of 1 segment receiving parts, if a 1 system segment receiving part is provided in multiple systems, it can be set as several independent subscreen displays (multi-subscreen display).

図３は、本発明に係るデジタル放送受信装置の第２の実施例を示すブロック図である。本実施例では、前記実施例１（図１）の構成に対し、１セグ受信部をさらに１系統追加して２系統とした構成である。前記図１と同一機能の要素には同一符号を付す。３０１は増幅分配部、３０２は追加した１セグ受信部、３０３は映像信号合成部、３０４は音声信号切替部である。追加した１セグ受信部３０２は、１セグ選局部３０５、１セグ復調部３０６、１セグ側のデマックス部３０７、１セグ側のデコード部３０８で構成され、それらは図１の１セグ受信部１０４の構成と同様である。以下、図１の１セグ受信部１０４を第１の１セグ受信部、追加した１セグ受信部３０２を第２の１セグ受信部と呼ぶ。   FIG. 3 is a block diagram showing a second embodiment of the digital broadcast receiving apparatus according to the present invention. In the present embodiment, in addition to the configuration of the first embodiment (FIG. 1), one system is further added to the 1-segment receiver to form two systems. Elements having the same functions as those in FIG. Reference numeral 301 denotes an amplification / distribution unit, 302 denotes an added 1-segment reception unit, 303 denotes a video signal synthesis unit, and 304 denotes an audio signal switching unit. The added 1-segment receiving unit 302 includes a 1-segment channel selection unit 305, a 1-segment demodulation unit 306, a 1-segment side demax unit 307, and a 1-segment side decoding unit 308, which are shown in FIG. It is the same as that of the structure. Hereinafter, the 1-segment receiver 104 in FIG. 1 is referred to as a first 1-segment receiver, and the added 1-segment receiver 302 is referred to as a second 1-segment receiver.

アンテナ１０１で受信されたＩＳＤＢ−Ｔ放送は増幅分配部３０１で増幅されフルセグ受信部１０３、第１の１セグ受信部１０４、第２の１セグ受信部３０２に分配される。第２の１セグ受信部３０２の動作は、第１の１セグ受信部１０４の動作と同様であるが、互いに独立して動作する。各受信部内のデコード部１１３，１１７，３０８で復号された映像信号は映像信号合成部３０３に、復号された音声信号は音声切替部３０４に出力される。   The ISDB-T broadcast received by the antenna 101 is amplified by the amplification / distribution unit 301 and distributed to the full-segment receiving unit 103, the first 1-segment receiving unit 104, and the second 1-segment receiving unit 302. The operation of the second 1-segment receiver 302 is the same as that of the first 1-segment receiver 104, but operates independently of each other. The video signals decoded by the decoding units 113, 117, and 308 in each receiving unit are output to the video signal synthesis unit 303, and the decoded audio signals are output to the audio switching unit 304.

制御部１１８は、フルセグ受信部１０３と第１の１セグ受信部１０４及び第２の１セグ受信部３０２に対して、それぞれが所望の番組を選局するための制御信号を送る。映像信号合成部３０３では、制御部１１８からの制御信号を受け、フルセグ受信部１０３からの映像信号と第１及び第２の１セグ受信部１０４，３０２のいずれか一方からの映像信号を、それぞれメイン画面とサブ画面の信号として合成し、映像表示部１０６に出力する。音声信号切替部３０４では、制御部１１８からの制御信号を受け、フルセグ受信部１０３からの音声信号と第１、第２の１セグ受信部１０４，３０２からの音声信号を切り替えて音声出力部１０８から出力する。   The control unit 118 sends a control signal for selecting a desired program to the full segment receiving unit 103, the first one segment receiving unit 104, and the second one segment receiving unit 302. The video signal synthesis unit 303 receives the control signal from the control unit 118, and receives the video signal from the full segment receiving unit 103 and the video signal from one of the first and second one segment receiving units 104 and 302, respectively. The signals are combined as signals of the main screen and the sub screen and output to the video display unit 106. The audio signal switching unit 304 receives a control signal from the control unit 118 and switches between the audio signal from the full-segment receiving unit 103 and the audio signal from the first and second 1-segment receiving units 104 and 302 to switch the audio output unit 108. Output from.

本実施例の受信装置によれば、前記実施例１で述べた（４）の操作（２画面表示で画面を入れ替える場合）をより快適に実行することができる。以下、それを説明する。   According to the receiving apparatus of the present embodiment, the operation (4) described in the first embodiment (when the screen is switched in the two-screen display) can be executed more comfortably. This will be described below.

図４は、２画面表示で番組を入れ替える場合の操作の一例を説明する図である。ここでは、メイン画面２０１で表示されていた番組Ａとサブ画面２０２で表示されていた番組Ｂを入れ替える場合である。符号４０１は映像表示部１０６には表示されていないサブ画面エリアであり、ここでは「裏サブ画面」と呼ぶ。   FIG. 4 is a diagram illustrating an example of an operation when a program is switched in a two-screen display. Here, the program A displayed on the main screen 201 is replaced with the program B displayed on the sub screen 202. Reference numeral 401 denotes a sub-screen area that is not displayed on the video display unit 106, and is referred to as a “back sub-screen” here.

図４（ａ）は初期状態を示す。
（ａ１）メイン画面２０１にはフルセグ受信部１０３からの番組Ａが表示されている。
（ａ２）サブ画面２０２には第１の１セグ受信部１０４からの番組Ｂが表示されている。
（ａ３）音声出力部１０８にはフルセグ受信部１０３からの音声番組Ａが出力されている。
（ａ４）第２の１セグ受信部３０２はフルセグ受信部１０３と同じ番組を受信するよう制御されているとする。すなわち、第２の１セグ受信部３０２は番組Ａを裏サブ画面４０１に出力している。 FIG. 4A shows an initial state.
(A1) On the main screen 201, the program A from the full segment receiving unit 103 is displayed.
(A2) On the sub-screen 202, the program B from the first one-segment receiving unit 104 is displayed.
(A3) The audio output unit 108 outputs the audio program A from the full segment receiving unit 103.
(A4) It is assumed that the second 1-segment receiving unit 302 is controlled to receive the same program as the full-segment receiving unit 103. That is, the second 1-segment receiving unit 302 outputs the program A to the back sub-screen 401.

図４（ｂ）は、画面操作の途中段階を示す。メイン画面２０１の番組Ａとサブ画面２０２の番組Ｂを入れ替える指示を受けると、
（ｂ１）音声信号切替部３０４は、第１の１セグ受信部１０４からの音声番組Ｂを出力するように切り替える。
（ｂ２）制御部１１８は、フルセグ選局部１０９を制御してフルセグ受信部１０３にて番組Ｂを選局・受信させる。
（ｂ３）映像信号合成部３０３は、裏サブ画面４０１に出力していた第２の１セグ受信部３０２からの番組Ａをサブ画面２０２に表示し、また、サブ画面２０２に表示していた第１の１セグ受信部１０４からの番組Ｂを裏サブ画面４０１に出力する（表示停止する）。 FIG. 4B shows an intermediate stage of the screen operation. When an instruction to replace program A on the main screen 201 and program B on the sub-screen 202 is received,
(B1) The audio signal switching unit 304 performs switching so as to output the audio program B from the first 1-segment reception unit 104.
(B2) The control unit 118 controls the full segment channel selection unit 109 to select and receive the program B at the full segment reception unit 103.
(B3) The video signal synthesizing unit 303 displays the program A from the second 1-segment receiving unit 302 that has been output to the back sub-screen 401 on the sub-screen 202, and also displays the program A that has been displayed on the sub-screen 202. Program B from one 1-segment receiver 104 is output to the back sub-screen 401 (display is stopped).

図４（ｃ）は、操作完了状態を示す図である。
（ｃ１）フルセグ受信部１０３にて番組Ｂが選局・受信されると、メイン画面２０１には番組Ｂが表示される。
（ｃ２）音声信号切替部３０４は、フルセグ受信部１０３からの音声番組Ｂに切り替える。 FIG. 4C shows the operation completion state.
(C1) When program B is selected and received by the full segment receiving unit 103, the program B is displayed on the main screen 201.
(C2) The audio signal switching unit 304 switches to the audio program B from the full segment receiving unit 103.

上記操作の結果、第１及び第２の１セグ受信部１０４，３０２はその機能が入れ替わる。すなわち、第１の１セグ受信部１０４からの番組は裏サブ画面４０１となり、フルセグ受信部１０３と同じ番組を受信するように制御される。第２の１セグ受信部３０２からの番組は、サブ画面２０２に表示される。   As a result of the above operation, the functions of the first and second one-segment receivers 104 and 302 are switched. That is, the program from the first 1-seg receiving unit 104 becomes the back sub-screen 401 and is controlled to receive the same program as the full-seg receiving unit 103. The program from the second 1-segment receiver 302 is displayed on the sub screen 202.

なおこの時、フルセグ受信部１０３と第１及び第２の１セグ受信部１０４，３０２との映像信号や音声信号には時間差ずれのないように調整されていることが望ましい。   At this time, it is desirable that the video signals and audio signals of the full-segment receiving unit 103 and the first and second one-segment receiving units 104 and 302 are adjusted so that there is no time difference.

本実施例によれば、サブ画面２０２側の番組切り替え（番組Ｂから番組Ａへ）はフルセグ受信部１０３の選局動作の影響を受けず瞬時に行える。また、番組Ａの映像については、メイン画面２０１からサブ画面２０２に途切れなく表示できるという効果がある。また、メイン画面２０１側の音声出力切替も選局動作の影響を受けず音声が途切れない。さらに、サブ画面２０２の番組の音声を、音声出力部１０８とは別の、例えばヘッドフォン端子などから出力する場合は、この音声も途切れないで出力することが可能である。   According to the present embodiment, program switching (from program B to program A) on the sub-screen 202 side can be performed instantaneously without being affected by the channel selection operation of the full segment receiving unit 103. Further, the video of program A can be displayed from the main screen 201 to the sub screen 202 without interruption. Also, the audio output switching on the main screen 201 side is not affected by the channel selection operation, and the audio is not interrupted. Furthermore, when the audio of the program on the sub screen 202 is output from, for example, a headphone terminal other than the audio output unit 108, this audio can be output without interruption.

図５は、図４の変形例であり、２画面表示で画面を入れ替える場合の操作の他の例を説明する図である。ここでは、画面上にサブ画面（第１のサブ画面）２０２とともに第２のサブ画面５０１を追加して表示できるようにしている。そのため制御部１１８は、映像合成部３０３に対して第１及び第２の１セグ受信部１０４，３０２からの映像を第１のサブ画面２０２と第２のサブ画面５０１に表示できるように制御する。   FIG. 5 is a modified example of FIG. 4 and is a diagram for explaining another example of the operation when the screen is switched in the two-screen display. Here, a second sub-screen 501 can be added and displayed together with the sub-screen (first sub-screen) 202 on the screen. Therefore, the control unit 118 controls the video composition unit 303 so that the video from the first and second 1-segment receiving units 104 and 302 can be displayed on the first sub-screen 202 and the second sub-screen 501. .

この場合の操作を説明する。図５（ａ）は初期状態で、図４（ａ）と同様である。図５（ｂ）は操作の途中段階を示す。図４（ｂ）と異なる点は、映像信号合成部３０３は、裏サブ画面４０１に出力していた第２の１セグ受信部３０２からの番組Ａを第１のサブ画面２０２に表示し、また、第１のサブ画面２０２に表示していた第１の１セグ受信部１０４からの番組Ｂを第２のサブ画面５０１に表示することである。   The operation in this case will be described. FIG. 5A shows the initial state, which is the same as FIG. FIG. 5B shows an intermediate stage of the operation. The difference from FIG. 4B is that the video signal synthesis unit 303 displays the program A from the second 1-segment reception unit 302 that has been output to the back sub-screen 401 on the first sub-screen 202, and In other words, the program B from the first 1-segment receiving unit 104 displayed on the first sub-screen 202 is displayed on the second sub-screen 501.

図５（ｃ）は、操作完了状態を示す図である。図４（ｃ）と異なる点は、フルセグ受信部１０３にて受信された番組Ｂがメイン画面２０１に表示されると、映像信号合成部３０３は、第２のサブ画面５０１に表示されていた第１の１セグ受信部１０４からの番組Ｂを裏サブ画面４０１に出力する（表示停止する）ことである。   FIG. 5C shows the operation completion state. The difference from FIG. 4C is that when the program B received by the full segment receiving unit 103 is displayed on the main screen 201, the video signal combining unit 303 displays the second sub screen 501. 1 is to output (stop display) the program B from the 1-segment receiving unit 104 to the back sub-screen 401.

本実施例によれば、図４を改良し、フルセグ受信部１０３にて番組Ｂを選局動作中においても、番組Ｂを第２のサブ画面５０１に表示できるので、番組Ｂの映像が途切れることがないという効果がある。また番組Ａの映像については、図４と同様に、メイン画面２０１から第１のサブ画面２０２に途切れなく表示できる。   According to the present embodiment, FIG. 4 is improved, and the program B can be displayed on the second sub-screen 501 even when the full-segment receiving unit 103 is selecting the program B. Therefore, the video of the program B is interrupted. There is an effect that there is no. The video of program A can be displayed from the main screen 201 to the first sub-screen 202 without interruption, as in FIG.

なお、図５の実施例では、第２のサブ画面５０１は第１のサブ画面２０２と同様の小さなサイズで表示させたが、メイン画面２０１と同等の大きなサイズで表示してもよい。その場合には、番組Ｂは第２のサブ画面５０１からメイン画面２０１に同じ画面サイズで切り替わるので、見掛け上メイン画面上での映像の途切れをなくすことができる。   In the embodiment of FIG. 5, the second sub screen 501 is displayed in a small size similar to the first sub screen 202, but may be displayed in a large size equivalent to the main screen 201. In that case, the program B is switched from the second sub-screen 501 to the main screen 201 with the same screen size, so that it is possible to eliminate the discontinuity of the video on the main screen.

図６は、本発明に係るデジタル放送受信装置の第３の実施例を示すブロック図である。本実施例では、前記実施例１（図１）の構成において、１セグ受信部１０４のデマックス部１１６以降の部分を装置本体から分離し、本体側をメイン受信部６１２、分離した側をサブ受信部６１３とした。サブ受信部６１３は例えば携帯可能なリモコンに内蔵し、メイン受信部６１２（本体側）の操作を可能とした構成である。メイン受信部６１２とサブ受信部６１３の間は、送受信部６０５，６０８と送受信アンテナ６０６，６０７を介して信号を伝送する。   FIG. 6 is a block diagram showing a third embodiment of the digital broadcast receiving apparatus according to the present invention. In the present embodiment, in the configuration of the first embodiment (FIG. 1), the portion of the 1-segment receiving unit 104 after the demax unit 116 is separated from the apparatus main body, the main body side is the main receiving unit 612, and the separated side is the sub-reception. Part 613. The sub reception unit 613 is built in, for example, a portable remote controller, and can operate the main reception unit 612 (main body side). Signals are transmitted between the main reception unit 612 and the sub reception unit 613 via transmission / reception units 605 and 608 and transmission / reception antennas 606 and 607.

メイン受信部６１２は、アンテナ１０１、増幅分配部１０２、フルセグ受信部１０３、映像表示部６０１、音声出力部６０２、１セグ選局部１１４、１セグ復調部１１５、送受信部６０５、送受信アンテナ６０６、制御部６１１を有する。そして映像表示部６０１と音声出力部６０２には、フルセグ受信部１０３にて受信した番組の映像信号と音声信号を表示・出力する。   The main reception unit 612 includes an antenna 101, an amplification distribution unit 102, a full segment reception unit 103, a video display unit 601, an audio output unit 602, a 1 segment selection unit 114, a 1 segment demodulation unit 115, a transmission / reception unit 605, a transmission / reception antenna 606, a control. Part 611. The video display unit 601 and the audio output unit 602 display and output the video signal and audio signal of the program received by the full segment receiving unit 103.

サブ受信部６１３は、送受信アンテナ６０７、送受信部６０８、１セグ側のデマックス部１１６、１セグ側のデコード部１１７、映像表示部６０３、音声出力部６０４、操作部６０９、操作信号入力部６１０を有する。そして映像表示部６０３と音声出力部６０４には、１セグ受信部１０４にて受信した番組の映像信号と音声信号を表示・出力する。   The sub-reception unit 613 includes a transmission / reception antenna 607, a transmission / reception unit 608, a 1-segment demax unit 116, a 1-segment decoding unit 117, a video display unit 603, an audio output unit 604, an operation unit 609, and an operation signal input unit 610. Have. The video display unit 603 and the audio output unit 604 display / output the video signal and audio signal of the program received by the 1-segment receiving unit 104.

また、サブ受信部６１３側の操作信号入力端子６１０から入力した操作信号を操作部６０９で伝送信号に変換し、送受信部６０５，６０８、送受信アンテナ６０６，６０７を介してメイン受信部６１２側の制御部６１１に伝送し、選局・受信の制御を行う。   Further, the operation signal input from the operation signal input terminal 610 on the sub reception unit 613 side is converted into a transmission signal by the operation unit 609, and control on the main reception unit 612 side is performed via the transmission / reception units 605 and 608 and the transmission / reception antennas 606 and 607. The data is transmitted to the unit 611 and channel selection / reception is controlled.

この場合の操作信号により次の制御を行うことができる。
（１）フルセグ受信部１０３及び１セグ受信部１０４における番組選局を制御する。
（２）メイン受信部６１２で表示・出力する番組を、サブ受信部６１３で現在表示・出力している番組に切り替える。
（３）サブ受信部６１３で記憶している１セグ放送の電子番組情報に基づき、（１）の番組選局を切り替える。 The following control can be performed by the operation signal in this case.
(1) Control channel selection in the full-seg receiving unit 103 and the 1-seg receiving unit 104.
(2) The program displayed / output by the main reception unit 612 is switched to the program currently displayed / output by the sub reception unit 613.
(3) Based on the 1-segment broadcasting electronic program information stored in the sub-reception unit 613, the program tuning in (1) is switched.

本実施例では、サブ受信部６１３を携帯可能なリモコン等に組み込むことにより、１セグ放送番組を装置本体とは独立して手元に表示しその音声を出力できる。また、装置本体のメイン受信部６１２の選局・受信の制御を手元リモコン等から行うことができ、操作が容易になる。   In the present embodiment, by incorporating the sub-reception unit 613 into a portable remote controller or the like, the 1-segment broadcast program can be displayed at hand independently of the apparatus main body and the sound can be output. In addition, channel selection / reception control of the main reception unit 612 of the apparatus main body can be performed from a local remote controller or the like, and the operation becomes easy.

なお、本実施例の送受信部６０５，６０８、送受信アンテナ６０６，６０７における送信方式は、任意に設定できる。例えばサブ受信部６１３からの送信には赤外線を、メイン受信部６１２からの送信には無線ＬＡＮを用いることができる。   In addition, the transmission method in the transmission / reception units 605 and 608 and the transmission / reception antennas 606 and 607 of the present embodiment can be arbitrarily set. For example, infrared rays can be used for transmission from the sub reception unit 613, and wireless LAN can be used for transmission from the main reception unit 612.

図７は、図６のデジタル放送受信装置の変形例を示すブロック図である。図６と異なる点は、１セグ受信部１０４をデマックス部１１６とデコーダ部１１７の間で分離し、装置本体側をメイン受信部７０３、分離した側をサブ受信部７０４としたことである。メイン受信部７０３には記憶部７０１を有し、サブ受信部７０４との信号伝送は送受信部７０２を介して行う。他の構成は図６と同様である。   FIG. 7 is a block diagram showing a modification of the digital broadcast receiving apparatus of FIG. The difference from FIG. 6 is that the 1-segment receiving unit 104 is separated between the demux unit 116 and the decoder unit 117, the main body side is the main receiving unit 703, and the separated side is the sub-receiving unit 704. The main reception unit 703 includes a storage unit 701, and signal transmission with the sub reception unit 704 is performed via the transmission / reception unit 702. Other configurations are the same as those in FIG.

１セグ受信部１０４のデマックス部１１６がメイン受信部７０３側にあるため、１セグ放送の電子番組情報はメイン受信部７０３の記憶部７０１、すなわち装置本体側で記憶される。記憶した電子番組情報は、送受信部７０２，６０８、送受信アンテナ６０６，６０７を介してサブ受信部７０４に伝送される。   Since the demux unit 116 of the 1-segment receiving unit 104 is on the main receiving unit 703 side, the electronic program information of 1-segment broadcasting is stored on the storage unit 701 of the main receiving unit 703, that is, on the apparatus main body side. The stored electronic program information is transmitted to the sub reception unit 704 via the transmission / reception units 702 and 608 and the transmission / reception antennas 606 and 607.

図７の実施例によれば、サブ受信部７０４を組み込んだリモコン等の電源が切られていても（または、信号伝送できない位置であっても）、１セグ放送の電子番組情報を装置本体側にて記憶できる利点がある。   According to the embodiment of FIG. 7, even if the power of a remote controller or the like incorporating the sub receiver 704 is turned off (or even at a position where signal transmission is not possible), the electronic program information of 1-segment broadcasting is transmitted to the apparatus main body side. There is an advantage that can be memorized.

なお、上記実施例は１セグ受信部を１系統設けた構成であるが、１セグ受信部を複数系統設けそれに対応して複数のサブ受信部を構成すれば、独立した複数のリモコンにて表示及び操作することが可能となる。   Although the above embodiment has a configuration in which one 1-segment receiver is provided, if a plurality of 1-segment receivers are provided and a plurality of sub-receivers are configured correspondingly, display is performed on a plurality of independent remote controllers. And can be operated.

図８は、本発明に係るデジタル放送受信装置の第４の実施例を示すブロック図である。本実施例では、フルセグ受信部１０３を含むメイン受信部８０１と、１セグ受信部１０４を含むサブ受信部８０３を独立させ、サブ受信部８０３にもＩＳＤＢ−Ｔ放送を受信するアンテナ８０２を設けたことである。そして、メイン受信部８０１とサブ受信部８０３との間では、送受信部６０５，６０８と送受信アンテナ６０６，６０７を介して制御信号の伝送を行う。   FIG. 8 is a block diagram showing a fourth embodiment of the digital broadcast receiving apparatus according to the present invention. In this embodiment, the main receiving unit 801 including the full segment receiving unit 103 and the sub receiving unit 803 including the 1 segment receiving unit 104 are made independent, and the sub receiving unit 803 is also provided with an antenna 802 for receiving ISDB-T broadcasting. That is. A control signal is transmitted between the main reception unit 801 and the sub reception unit 803 via the transmission / reception units 605 and 608 and the transmission / reception antennas 606 and 607.

本実施例では、サブ受信部８０３は独立した１セグ受信機として機能するとともに、サブ受信部８０３側にてメイン受信部８０１の選局操作などの制御を行うことができる。本実施例では、送受信部６０５，６０８は制御信号を伝送するだけなので、伝送レートの低い送信方式を利用できる。   In the present embodiment, the sub-reception unit 803 functions as an independent 1-segment receiver, and can control the channel selection operation of the main reception unit 801 on the sub-reception unit 803 side. In this embodiment, since the transmission / reception units 605 and 608 only transmit control signals, a transmission method with a low transmission rate can be used.

以上、本発明によるデジタル放送受信装置の各種実施例を述べたが、各実施例はそれぞれ単独でも、また他の実施例と適宜組合わせて適用することも可能である。これにより、例えば、２画面表示における番組入れ替えを携帯可能なリモコンから操作することができる。その際、受信部の具体的構成や選局・受信・表示動作は適宜決定すればよい。   Although various embodiments of the digital broadcast receiving apparatus according to the present invention have been described above, each embodiment can be applied alone or in combination with other embodiments as appropriate. Thereby, for example, program replacement in the two-screen display can be operated from a portable remote controller. At this time, the specific configuration of the receiving unit and the channel selection / reception / display operation may be appropriately determined.

上記各実施例の構成は一例であり、本発明の要旨を変えない範囲で、対象とする放送信号方式や受信装置の仕様に応じて適宜変更可能である。すなわち放送信号はＩＳＤＢ−Ｔ放送に限定されず、階層構造にてサイマル放送されるデジタル放送に広く適用可能であり、受信するセグメント数（フルセグおよび１セグ）も限定するものではない。また受信部として高品質な信号を受信する第１の受信部と、低品質な信号を受信する第２の受信部を備えるが、第２の受信部は、装置仕様に応じて必要とされる数の複数系統とすればよい。   The configuration of each of the above embodiments is merely an example, and can be appropriately changed according to the target broadcast signal system and the specifications of the receiving device without departing from the scope of the present invention. That is, the broadcast signal is not limited to ISDB-T broadcast, but can be widely applied to digital broadcasts that are simultaneously broadcast in a hierarchical structure, and the number of segments to be received (full segment and 1 segment) is not limited. In addition, the receiver includes a first receiver that receives a high-quality signal and a second receiver that receives a low-quality signal. The second receiver is required depending on the device specifications. Multiple systems of numbers may be used.

本発明に係るデジタル放送受信装置の第１の実施例を示すブロック図。1 is a block diagram showing a first embodiment of a digital broadcast receiving apparatus according to the present invention. 映像表示部１０６に表示される画面構成の一例を示す図。FIG. 4 is a diagram showing an example of a screen configuration displayed on a video display unit 106. 本発明に係るデジタル放送受信装置の第２の実施例を示すブロック図。The block diagram which shows the 2nd Example of the digital broadcast receiver which concerns on this invention. ２画面表示で画面を入れ替える場合の操作の一例を説明する図。The figure explaining an example of operation in the case of switching a screen by 2 screen display. ２画面表示で画面を入れ替える場合の操作の他の例を説明する図。The figure explaining the other example of operation in the case of switching a screen by 2 screen display. 本発明に係るデジタル放送受信装置の第３の実施例を示すブロック図。The block diagram which shows the 3rd Example of the digital broadcast receiver which concerns on this invention. 図６のデジタル放送受信装置の変形例を示すブロック図。The block diagram which shows the modification of the digital broadcast receiver of FIG. 本発明に係るデジタル放送受信装置の第４の実施例を示すブロック図。The block diagram which shows the 4th Example of the digital broadcast receiver which concerns on this invention. ＩＳＤＢ−Ｔ放送における放送信号の周波数帯域を示す図。The figure which shows the frequency band of the broadcast signal in ISDB-T broadcast.

符号の説明Explanation of symbols

１０１，８０２…アンテナ、
１０２，３０１…増幅分配部、
１０３…１３セグメント（フルセグ）受信部、
１０４，３０２…携帯受信用放送（１セグ）受信部、
１０５，３０３…映像信号合成部、
１０６，６０１，６０３…映像表示部、
１０７，３０４…音声信号切替部、
１０８，６０２，６０４…音声出力部、
１０９，１１４，３０２…選局部、
１１０，１１５，３０６…復調部、
１１１…デスクランブル部、
１１２，１１６，３０７…デマックス部、
１１３，１１７，３０８…デコード部、
１１８，６１１…制御部、
１１９，６１０…操作信号入力部、
６０５，６０８，７０２…送受信部、
６０６，６０７…送受信アンテナ、
６０９…操作部、
６１２，７０３，８０１…メイン受信部、
６１３，７０４，８０３…サブ受信部、
７０１…記憶部。
101, 802 ... antenna,
102, 301 ... amplification distribution unit,
103 ... 13 segment (full segment) receiver,
104, 302 ... Mobile reception broadcast (1 segment) receiver,
105, 303 ... video signal synthesis unit,
106, 601, 603... Video display unit,
107, 304 ... voice signal switching unit,
108, 602, 604 ... audio output unit,
109, 114, 302 ... tuning section,
110, 115, 306 ... demodulator,
111 ... descramble part,
112, 116, 307 ... Demax part,
113, 117, 308 ... decoding unit,
118,611 ... control unit,
119, 610 ... operation signal input unit,
605, 608, 702 ... transmission / reception unit,
606, 607 ... transmitting / receiving antenna,
609 ... operation unit,
612, 703, 801 ... main receiver,
613, 704, 803 ... sub-receiving unit,
701: Storage unit.

Claims (3)

同一番組に関して、第１の放送と該第１の放送より伝送容量または伝送帯域の少ない第２の放送とが階層構造を持って同時に送信されるデジタル放送を受信するデジタル放送受信装置において、In a digital broadcast receiving apparatus that receives a digital broadcast in which a first broadcast and a second broadcast having a transmission capacity or transmission band smaller than that of the first broadcast are simultaneously transmitted with a hierarchical structure with respect to the same program,
上記デジタル放送の上記第１の放送から所望の番組を受信して第１の映像信号と第１の音声信号を生成し、該第１の映像信号を第１の映像表示部に表示し該第１の音声信号を第１の音声出力部に出力するとともに、上記デジタル放送の上記第２の放送から所望の番組を受信して第２のデジタル信号を生成する第１の受信部と、A desired program is received from the first broadcast of the digital broadcast, a first video signal and a first audio signal are generated, the first video signal is displayed on a first video display unit, and the first video signal is displayed. A first receiving unit that outputs a first audio signal to the first audio output unit, receives a desired program from the second broadcast of the digital broadcast, and generates a second digital signal;
該第１の受信部にて生成した上記第２のデジタル信号を受信して第２の映像信号と第２の音声信号を生成し、該第２の映像信号を第２の映像表示部に表示し該第２の音声信号を第２の音声出力部に出力する第２の受信部とを備え、The second digital signal generated by the first receiving unit is received to generate a second video signal and a second audio signal, and the second video signal is displayed on the second video display unit. And a second receiving unit that outputs the second audio signal to the second audio output unit,
該第２の受信部は上記第１の受信部に対して、上記第１の放送及び上記第２の放送からそれぞれ所望する番組を受信するための制御信号を送信することを特徴とするデジタル放送受信装置。The second receiving unit transmits to the first receiving unit a control signal for receiving a desired program from the first broadcast and the second broadcast, respectively. Receiver device. 同一番組に関して、第１の放送と該第１の放送より伝送容量または伝送帯域の少ない第２の放送とが階層構造を持って同時に送信されるデジタル放送を受信するデジタル放送受信装置において、In a digital broadcast receiving apparatus that receives a digital broadcast in which a first broadcast and a second broadcast having a transmission capacity or transmission band smaller than that of the first broadcast are simultaneously transmitted with a hierarchical structure with respect to the same program,
上記デジタル放送の上記第１の放送から所望の番組を受信して第１の映像信号と第１の音声信号を生成し、該第１の映像信号を第１の映像表示部に表示し該第１の音声信号を第１の音声出力部に出力する第１の受信部と、A desired program is received from the first broadcast of the digital broadcast, a first video signal and a first audio signal are generated, the first video signal is displayed on a first video display unit, and the first video signal is displayed. A first receiver that outputs the first audio signal to the first audio output unit;
上記デジタル放送の上記第２の放送から所望の番組を受信して第２の映像信号と第２の音声信号を生成し、該第２の映像信号を第２の映像表示部に表示し該第２の音声信号を第２の音声出力部に出力する第２の受信部とを備え、A desired program is received from the second broadcast of the digital broadcast, a second video signal and a second audio signal are generated, the second video signal is displayed on a second video display unit, and the second video signal is displayed. A second receiving unit that outputs the second audio signal to the second audio output unit,
該第２の受信部は上記第１の受信部に対して、該第１の受信部にて所望する番組を受信するための制御信号を送信することを特徴とするデジタル放送受信装置。The digital broadcast receiving apparatus, wherein the second receiving unit transmits a control signal for receiving a desired program at the first receiving unit to the first receiving unit. 請求項１または請求項２記載のデジタル放送受信装置において、The digital broadcast receiver according to claim 1 or 2,
前記第２の受信部を携帯可能なリモコンに組み込んで構成することを特徴とするデジタル放送受信装置。A digital broadcast receiving apparatus comprising the second receiving unit incorporated in a portable remote controller.
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