JP2004048447A - Digital television receiving device and radio communication device - Google Patents

Digital television receiving device and radio communication device Download PDF

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Publication number
JP2004048447A
JP2004048447A JP2002204010A JP2002204010A JP2004048447A JP 2004048447 A JP2004048447 A JP 2004048447A JP 2002204010 A JP2002204010 A JP 2002204010A JP 2002204010 A JP2002204010 A JP 2002204010A JP 2004048447 A JP2004048447 A JP 2004048447A
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Prior art keywords
wireless communication
digital television
period
communication device
television receiver
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JP2002204010A
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JP4176405B2 (en
Inventor
Akio Takeuchi
竹内 章生
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital television receiving device or the like which can receive a television system without receiving an influence of a burst noise or the like together with a communication operation of a radio communication, when the digital television receiving device is connected to a radio communication device to operate. <P>SOLUTION: A television receiving portion 50 to which a radio communication portion 51 is connected is provided with, when the radio communication portion 51 is operated, a CPU 52 detecting a noise-resistant period in the television receiving portion 50, and a transmitting/receiving procedure control circuit 18 controlling to make a transmitting operation of at least the radio communication portion 51, perform at the noise-resistant period. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は,無線通信装置に接続して使用されるデジタルテレビ受信装置等に関するものである。
【0002】
【従来の技術】
近年、携帯電話、PHSや無線LANといった無線通信のサービス範囲が拡大してきている。特に携帯電話のような無線通信装置は、パーソナルコンピュータに接続して用いられることも多い。
【0003】
従来技術を、特開平8−255117号公報「情報処理装置およびそれに接続して使用される無線通信装置ならびにそれら装置を使用した無線通信システム」から例示し、その構成を図5に示す。この無線通信システムは、パーソナルコンピュータのような情報処理装置をPCカードのような無線通信装置とを接続して使用する場合に、情報処理装置からの不要輻射による影響を回避することで、無線通信装置の無線通信の通信品質の向上を図るというものである。
【0004】
図5に示すように、情報処理装置91の情報処理部94は、信号伝送部93を介して無線通信装置92から供給される制御信号により、情報処理部94の動作停止や動作速度の増減などを制御する。
【0005】
このように、無線通信装置92の無線通信動作に合わせて情報処理装置91を動作制御することにより、無線通信周波数帯域に対する情報処理装置91からの不要輻射の影響を回避することができ、所望の無線通信品質,例えば信号帯雑音比や誤り率などを満足する情報通信を行うことができる。
【0006】
【発明が解決しようとする課題】
一方、無線通信装置と組み合わせて用いる他の装置としては、上記の情報処理装置の他に、テレビのように放送受信機能を有する装置が考えられる。特に放送分野においては、CSデジタル放送やBSデジタル放送のサービススタートに続いて、地上波のデジタル化への準備が着々と進められており、将来にはこれら放送および通信事業のサービスの一体化が実現されていくものと予測される。さらに小型化、低消費電力化技術の発展が急速に加速している現状を鑑みると、無線通信機能と放送受信機能が一体化された商品の実用化が望まれると考えられる。
【0007】
しかしながら、無線通信機能と放送受信機能を接続する使用形態、あるいは両者を一体化することにより使用する装置形態において、テレビ放送を受信しながら無線通信を行う場合、無線通信機能の送信タイミングによるバースト的なノイズが不要輻射や電源リップル、またグランドバウンスにより、放送波の受信が困難または不可能となることがある。
【0008】
特に端末形態を小型化、低電力化にする程この傾向は顕著になる。このため前記使用形態の端末では、テレビ放送の受信と同時に無線通信をすることは困難または不可能であった。これらの課題は上記従来の技術では十分に対応できなかった。
【0009】
本発明は、上記の課題に鑑みてなされたものであり、無線通信装置と接続して動作する際に、無線通信の通信動作に伴うバースト的なノイズ等の影響を被ることなくテレビ方法の受信を行うことができるデジタルテレビ受信装置等を提供するものである。
【0010】
【課題を解決するための手段】
上記の目的を達成するために、第1の本発明は、無線通信装置が接続されたデジタルテレビ受信装置において、
前記無線通信装置を動作させる場合に、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する検出手段と、
前記ノイズに強い期間に、少なくとも前記無線通信装置の送信動作を行わせるよう制御を行う制御手段とを備えたデジタルテレビ受信装置である。
【0011】
また、第2の本発明は、前記制御手段は、前記ノイズに強い期間に、前記無線通信装置の受信動作を行わせるよう制御を行う第1の本発明のデジタルテレビ受信装置である。
【0012】
また、第3の本発明は、前記受信信号は、ヘッダ部と実データ部とを有する複数のセグメントから構成される第1または2の本発明のデジタルテレビ受信装置である。
【0013】
また、第4の本発明は、前記ノイズに強い期間は、前記セグメントの受信中における所定の位置に基づきあらかじめ定められており、
前記検出手段は、前記所定の位置を検出することにより前記ノイズに強い期間を検出する第3の本発明のデジタルテレビ受信装置である。
【0014】
また、第5の本発明は、前記所定の位置は、前記ヘッダ部に含まれているものであって、前記セグメントの同期位置を示すものである第4の本発明のデジタルテレビ受信装置である。
【0015】
また、第6の本発明は、前記検出手段は、前記セグメントの所定の期間を一回または複数回検出し、その所定の期間に基づき、前記ノイズに強い期間を得る第3の本発明のデジタルテレビ受信装置である。
【0016】
また、第7の本発明は、前記セグメントは、ISDB−T方式におけるシンボルまたはフレームに相当するものである第3または第6の本発明のデジタルテレビ受信装置である。
【0017】
また、第8の本発明は、前記検出手段の検出動作の対象となる前記受信信号は、前記デジタルテレビが接続されたアンテナまたは前記アンテナの給電点から、前記検出手段までの伝送路にある信号である第1の本発明のデジタルテレビ受信装置である。
【0018】
また、第9の本発明は、デジタルテレビ受信装置が接続された無線通信装置において、
前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する検出手段と、
前記ノイズに強い期間に、少なくとも送信動作を行わせるよう制御を行う制御手段とを備えた無線通信装置である。
【0019】
また、第10の本発明は、無線通信装置が接続されたデジタルテレビ受信装置の制御方法であって、
前記無線通信装置を動作させる場合に、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する工程と、
前記ノイズに強い期間に、少なくとも前記無線通信装置の送信動作を行わせるよう制御を行う工程とを備えたデジタルテレビ受信装置の制御方法である。
【0020】
また、第11の本発明は、第1の本発明のデジタルテレビ受信装置における、前記無線通信装置を動作させる場合に、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する検出手段と、前記ノイズに強い期間に、少なくとも前記無線通信装置の送信動作を行わせるよう制御を行う制御手段との全部または一部としてコンピュータを機能させるためのプログラムである。
【0021】
また、第12の本発明は、第11の本発明のプログラムを担持した媒体であって、コンピュータにより処理可能な媒体である。
【0022】
以上のような本発明は、その一例として、無線通信装置を接続可能なデジタルテレビ受信装置において、前記無線通信装置を動作させる場合には、前記デジタルテレビ受信装置の受信信号のうち受信性能にあたえる影響が少ない期間を検出し、事前に対向する通信装置との間で送受信タイミングの調停を行い、前記無線通信装置の所定の送信動作を前記検出期間の範囲で行うように送信および受信の開始時刻を制御するようにしてもよい。
【0023】
本発明によれば、無線通信機能と放送受信機能を接続する使用形態、あるいは一体化することにより使用する装置形態において、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないテレビ受信装置が提供できる。
【0024】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置において、前記無線通信装置を動作させる場合には、前記デジタルテレビ受信装置の受信信号のうち受信性能にあたえる影響が少ない期間を検出し、事前に対向する通信装置との間で送受信タイミングの調停を行い、前記検出期間の範囲で前記無線通信装置の送信動作をするように送信および受信周期を制御するようにしてもよい。
【0025】
本発明によれば、無線通信機能と放送受信機能を接続する使用形態、あるいは一体化することにより使用する装置形態において、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないテレビ受信装置が提供できる。
【0026】
【発明の実施の形態】
(発明の形態)
以下に、本発明の実施の形態について、図1、図2および図3を用いて説明する。
【0027】
図1は、本実施の形態による無線通信装置を接続可能なデジタルテレビ受信装置の構成図である。図に示すように、デジタルテレビ受信装置は、放送局53からの信号を受信するテレビ受信部50と、無線通信局54との通信を行う無線通信部51と、両者を制御するCPU52とから構成される。なお、テレビ受信部50と無線通信部51とは、別構成でもよいし、同一筐体内に一体化した構成としてもよい。
【0028】
無線通信部51において、第1のアンテナ10は、無線通信局54との間で送受信電波を空間中で効率的に受け渡しをするためのもので、選局回路13と第1の復調回路15は、第1のアンテナ10により得た高周波信号から所定の周波数帯域信号を所定のタイミングで受信しデジタル信号に変換する第1の受信手段を構成し、送出回路12と第1の変調回路14は、送信するべきデジタル信号を所定の高周波帯域信号に変換して前記アンテナにより所定のタイミングで送信するための第1の送信手段を構成し、データ多重/分離部16は、入力部19からの情報を所定の処理によってパケットデータ化し変調回路14へ出力する機能と、第1の復調回路15からの入力信号を所定の処理によって出力データへ変換する機能を持つ手段である。また、17はデータ符号/復号回路、19はデータ入力部である。送受手順制御回路18は、第1の送信手段および前記第1の受信手段を動作させる所定のタイミングを制御する第1の情報処理手段を構成するものである。
【0029】
また、テレビ受信部50において、第2のアンテナ30は、放送局からの放送電波を空中で効率的に受けるためのもので、チューナ31と第2の復調回路32は前記アンテナにより得た高周波信号から所定の周波数帯域信号を受信しデジタル信号に変換する第2の受信手段を構成し、TS分離回路33、映像復号回路34および音声復号回路35は、前記デジタル信号を所定の処理によって出力データへ変換する第2の情報処理手段を構成し、合成回路36は、前記出力データと前記無線通信部からの出力データを合成する手段を構成する。
【0030】
さらにCPU52は、無線通信部とテレビ受信部との間の調停をする制御手段を実現するものである。
【0031】
以上のような構成を有する本実施の形態1による、デジタルテレビ受信装置の動作を以下に説明するとともに、これにより、本発明のデジタルテレビ受信装置の制御方法の一実施の形態について、図2を参照して説明を行う。ただし図2は、無線通信開始までの処理フローを示す図である。なお、以下の説明において、テレビ受信部の受信動作に関し、本発明と直接関連しない部分においては、簡単のため説明を省略する。
【0032】
入力部19から通信開始の指示を受けると(ステップ201)、CPU52は、テレビ受信部50がテレビ受信を行っているか否かの判断を行う(ステップ202)。この判断は、例えばCPU52が第2の復調回路32の動作状態を検知することによって行う。また、チューナ32の動作状態を検知するようにしてよもよい。また、テレビ受信が行われていないという判定の場合には、無線通信は任意のタイミングで実行される。
【0033】
テレビ受信が行われている場合には、CPU52は、第2の復調回路32からデジタル信号である受信信号を取得すると、ここから、後述する同期位置を検出する(ステップ203)。次いでCPU52は、検出した同期位置に基づき、無線通信部51が送信動作を行うのに最適な期間を検出する(ステップ204)。
【0034】
ここで、上記した、無線通信部51が送信動作を行うのに最適な期間について図3を使って説明する。テレビ受信部50が受信する放送としては、国内地上デジタル放送方式に採用されているISDB−T方式を例にとっている。受信信号は、フレームとよばれる所定時間長をデータセグメントを一単位として構成されており、複数のフレームにより形成されたデータ列となっている。さらに一つのフレームは、シンボルと呼ばれる所定時間長(フレームの所定時間長とは異なる長さ)のデータセグメントから構成されている。
【0035】
図中に受信信号#1,#2,...として示されるシンボルは、所定期間である有効部と有効部の後部の一部を前記有効シンボルの先頭部へ付加した信号であるガード部とから成り、受信信号#1、受信信号#2、・・・受信信号#Nと連続したシンボルを受信処理している。
【0036】
各シンボルにおいて、TS分離回路33以降の処理に必要な信号は、ガード部と有効部の内、有効部であるが、第2の復調回路32にて有効部の受信期間tu中に、無線通信部51が動作を行うと、すでに述べたような、バースト的なノイズが不要輻射や電源リップル、またグランドバウンスとして、有効部のデータに悪影響を与える。
【0037】
そこで本実施の形態においては、比較的ノイズに強いガード部の受信期間tgに、無線通信部51を動作させるようにして、無線通信部51の動作に起因するノイズの影響が、テレビ受信部で受信される映像に及ぶことを防いでいる。このとき、CPU52の検出動作の対象となる受信信号は、テレビ受信部50が接続されたアンテナ30から、第2の復調回路32までの伝送路にある信号となるようにする。もしくは、図示しないアンテナ32の給電点から、第2の復調回路32までの伝送路にある信号となるようにする。なお、この伝送路は、本発明の伝送路に相当するものであって、第2の復調回路32と、CPU52とは、伝送路上の配置としては同等の手段と見なしてよい。
【0038】
ここで、CPU52が、ガード部が受信される期間tgを検出する方法は幾種類かあるが、各シンボルのガード部に含まれるシンボル同期位置を検出して、このシンボル同期位置を含む前後の、あらかじめ設定した時間長を期間tgと見なすようにしてもよい。図3に示す例では、シンボル同期位置は、ガード部の後半寄りに設けられているため、あらかじめ設定した時間長は、シンボル同期位置の検出地点より前の時間長tg1と、シンボル同期位置の検出地点より後の時間長tg2との和ということになる。
【0039】
また、あらかじめ一つまたは複数のシンボルを取得して、各シンボルのガード部の実際の時間長を検出し、これらの値の代表値、もしくは平均値を期間tgと見なすようにしてもよい。なお、以上の動作において、CPU52はガード部の起点を常に検出し、ここから期間tgの間に、無線通信部51を動作させる必要がある。
【0040】
再び図2の処理フローに戻って、CPU52は、検出したノイズに強い期間に、無線通信部51を動作させるために、送受手順制御回路18と所定の通信を行い、実際に通信を行うタイミングを決定する(ステップ205)。
【0041】
送受手順制御回路18は、CPU52から、ノイズに強い期間についての情報を取得すると、これに基づき、第1の変調回路14および送出回路12,もしくは第1の復調回路15および選挙区回路13を動作させて、送信または受信の動作を実行させる。
【0042】
図3に示す例においては、無線通信部51のの送信動作が行われる期間は、すべてガード部の時間長内であり、かつシンボル同期位置よりも早い期間である。
【0043】
一方、無線通信部51の受信動作が行われる時間は、シンボル同期位置より後であって、その期間は、ガード部から有効部の時間長の一部にまたがるようにしている。シンボル毎に受信処理するタイミングは、シンボル同期位置と同期信号として受信機が決定する。
【0044】
無線通信部51の動作において、テレビ受像部50に与える影響は、送信動作のほうが、受信動作の影響より大きい。したがって、図3に示すように、無線通信部51の動作のうち、少なくとも送信動作をガード部の時間長内に行わせるようにすれば、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信に伴うバースト的な妨害波の影響を防ぐことができ、良好なテレビ受信を行うことができる。
【0045】
次に、図4に示す例においては、無線通信部51のの送信動作および受信動作が行われる期間を、すべてガード部の時間長内であり、かつシンボル同期位置よりも早い期間にしている。これにより、図3に示す例の効果に併せて、無線通信機能の受信時に伴うバースト的な妨害波の影響をも防ぐことができ、さらに良好なテレビ受信を行うことができる。
【0046】
なお、図3および図4においては、1シンボル毎に無線通信の送受信が1回実行される例を示し、受信信号#1と#nについてのみ動作の様子を示したが、他の受信信号においても同様であることは言うまでもない。
【0047】
なお、上記の動作においては、受信信号をシンボル単位で扱うものとして説明を行ったが、フレーム単位で扱うものとしてもよい。この場合、フレームは、シンボルのガード部に相当するフレームの一部分と、シンボルの有効部に相当する残りの部分とに分けて表され、上記一部分において、少なくとも無線通信部51の送信動作を行わせるようにすれば、同様の効果が得られる。
【0048】
また、上記の実施の形態において、CPU52は本発明の検出手段に相当し、送受手順制御回路18は本発明の制御手段に相当する。また、受信信号を構成するシンボルは本発明のセグメントに相当し、ガード部は本発明のヘッダ部、有効部は本発明の実データ部に相当し、シンボル同期位置は、本発明のセグメントの受信中における所定の位置に相当する。
【0049】
また、上記の説明においては、送受手順制御回路18は無線通信部51に内蔵するものとして説明を行ったが、これはテレビ受信部50に内蔵されているものとしてもよい。CPU52と送受手順制御回路18とがテレビ受信部50に内蔵されることにより、本発明の単体としてのデジタルテレビ受信装置が構成され、このとき無線通信部51は、本発明の単体としての無線通信装置に対応することになる。
【0050】
また、CPU52を無線通信部51に内蔵することにより、無線通信部51を単体である、本発明の無線通信装置として実現してもよい。
【0051】
また、本発明は、上述した本発明のデジタルテレビ受信装置の全部または一部の手段(または、装置、素子、回路、部等)の機能をコンピュータにより実行させるためのプログラムであって、コンピュータと協働して動作するプログラムであってもよい。
【0052】
また、本発明は、上述した本発明のデジタルテレビ受信装置の全部または一部の手段の全部または一部の機能をコンピュータにより実行させるためのプログラムを担持した媒体であり、コンピュータにより読み取り可能且つ、読み取られた前記プログラムが前記コンピュータと協動して前記機能を実行する媒体であってもよい。
【0053】
なお、本発明の一部の手段(または、装置、素子、回路、部等)、本発明の一部のステップ(または、工程、動作、作用等)とは、それらの複数の手段またはステップの内の、幾つかの手段またはステップを意味し、あるいは、一つの手段またはステップの内の、一部の機能または一部の動作を意味するものである。
【0054】
また、本発明の一部の装置(または、素子、回路、部等)とは、それらの複数の装置の内の、幾つかの装置を意味し、あるいは、一つの装置の内の、一部の手段(または、素子、回路、部等)を意味し、あるいは、一つの手段の内の、一部の機能を意味するものである。
【0055】
また、本発明のプログラムを記録した、コンピュータに読みとり可能な記録媒体も本発明に含まれる。
【0056】
また、本発明のプログラムの一利用形態は、コンピュータにより読み取り可能な記録媒体に記録され、コンピュータと協働して動作する態様であっても良い。
【0057】
また、本発明のプログラムの一利用形態は、伝送媒体中を伝送し、コンピュータにより読みとられ、コンピュータと協働して動作する態様であっても良い。
【0058】
また、本発明のデータ構造としては、データベース、データフォーマット、データテーブル、データリスト、データの種類などを含む。
【0059】
また、記録媒体としては、ROM等が含まれ、伝送媒体としては、インターネット等の伝送機構、光・電波・音波等が含まれる。
【0060】
また、上述した本発明のコンピュータは、CPU等の純然たるハードウェアに限らず、ファームウェアや、OS、更に周辺機器を含むものであっても良い。
【0061】
なお、以上説明した様に、本発明の構成は、ソフトウェア的に実現しても良いし、ハードウェア的に実現しても良い。
【0062】
以上のような本発明は、さらに、以下のような形態にて実現してもよい。
【0063】
すなわち、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置において、前記無線通信装置を動作させる場合には、前記デジタルテレビ受信装置の受信信号のうち受信性能にあたえる影響が少ない期間を検出し、事前に対向する通信装置との間で送受信タイミングの調停を行い、前記無線通信装置の所定の送信動作を前記検出期間の範囲で行うように送信および受信の開始時刻を制御することを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0064】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置であって、無線通信局との間で送受信電波を空間中で効率的に受け渡しする第1のアンテナと、前記アンテナにより得た高周波信号から所定の周波数帯域信号を所定のタイミングで受信しデジタル信号に変換する第1の受信手段と、送信するべきデジタル信号を所定の高周波帯域信号に変換して前記アンテナにより所定のタイミングで送信するための第1の送信手段と、入力手段からの情報を所定の処理によってパケットデータ化し前記第1の送信部へ出力する機能と、前記第1の受信手段からの入力信号を所定の処理によって出力データへ変換する機能を持つと共に、前記第1の送信部および前記第1の受信部を動作させる所定のタイミングを制御する第1の情報処理手段とから構成される無線通信部と、放送局からの放送電波を空中で効率的に受ける第2のアンテナと、前記アンテナにより得た高周波信号から所定の周波数帯域信号を受信しデジタル信号に変換する第2の受信手段と、前記デジタル信号を所定の処理によって出力データへ変換する第2の情報処理手段と、前記出力データと前記無線通信部からの出力データを合成する手段と、前記合成データを表示するための手段から構成されるテレビ受信部、さらに前記第2の受信部と前記第1の情報処理部間の調停をする制御手段から成っており、前記無線通信装置を動作させる場合には、前記デジタルテレビ受信装置の受信信号のうち受信性能にあたえる影響が少ない期間を検出し、事前に対向する通信装置との間で送受信タイミングの調停を行い、前記無線通信装置の所定の送信動作を前記検出期間の範囲で行うように送信および受信の開始時刻を制御することを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0065】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置において、フレームを構成する複数のシンボルは所定期間に割当てられたデジタルデータを直交周波数分割多重することにより生成し、前記所定期間である有効シンボルと前記有効シンボルの後部の一部をガード信号として前記有効シンボルの先頭部へ付加された信号を、割当てられた単一の周波数帯へ変換して送信される放送と、複数のタイムスロットによりフレームを構成し、前記各タイムスロットへ単一または複数の周波数帯を割当て時分割多重化した信号を送信機および受信機を介して送受信する無線通信との、複数の伝送方式に対する、前記請求項1および2に記載の無線通信装置を接続可能なデジタルテレビ受信装置において、無線通信装置のタイムスロットを送信するタイミングは、テレビ受信部により設定されたシンボル期間単位の同期パルス発生時刻に対して1有効シンボル期間経過後の時刻から、1ガード信号分の期間の時刻に開始し、一方前記無線通信部の受信タイミングは所定の送信タイミングに対応した動作であることを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0066】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置において、前記無線通信装置を動作させる場合には、前記デジタルテレビ受信装置の受信信号のうち受信性能にあたえる影響が少ない期間を検出し、事前に対向する通信装置との間で送受信タイミングの調停を行い、前記検出期間の範囲で前記無線通信装置の送信動作をするように送信および受信周期を制御することを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0067】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置は、無線通信局との間で送受信電波を空間中で効率的に受け渡しする第1のアンテナと、前記アンテナにより得た高周波信号から所定の周波数帯域信号を所定のタイミングで受信しデジタル信号に変換する第1の受信手段と、送信するべきデジタル信号を所定の高周波帯域信号に変換して前記アンテナにより所定のタイミングで送信するための第1の送信手段と、入力手段からの情報を所定の処理によってパケットデータ化し前記第1の送信部へ出力する機能と、前記第1の受信手段からの入力信号を所定の処理によって出力データへ変換する機能を持つと共に、前記第1の送信部および前記第1の受信部を動作させる所定のタイミングを制御する第1の情報処理手段とから構成される無線通信部と、放送局からの放送電波を空中で効率的に受ける第2のアンテナと、前記アンテナにより得た高周波信号から所定の周波数帯域信号を受信しデジタル信号に変換する第2の受信手段と、前記デジタル信号を所定の処理によって出力データへ変換する第2の情報処理手段と、前記出力データと前記無線通信部からの出力データを合成する手段と、前記合成データを表示するための手段から構成されるテレビ受信部、さらに前記第2の受信部と前記第1の情報処理部間の調停をする制御手段から成っており、前記無線通信装置を動作させる場合には、前記デジタルテレビ受信装置の受信信号のうち受信性能にあたえる影響が少ない期間を検出し、事前に対向する通信装置との間で送受信タイミングの調停を行い、前記検出期間の範囲で前記無線通信装置の送信動作をするように送信および受信周期を制御することを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0068】
また、本発明は、フレームを構成する複数のシンボルは所定期間に割当てられたデジタルデータを直交周波数分割多重することにより生成し、前記所定期間である有効シンボルと前記有効シンボルの後部の一部をガード信号として前記有効シンボルの先頭部へ付加された信号を、割当てられた単一の周波数帯へ変換して送信される放送と、複数のタイムスロットによりフレームを構成し、前記各タイムスロットへ単一または複数の周波数帯を割当て時分割多重化した信号を送信機および受信機を介して送受信する無線通信との、複数の伝送方式に対する、前記請求項1および4に記載の無線通信装置を接続可能なデジタルテレビ受信装置において、無線通信装置のタイムスロットを送信するタイミングは、テレビ受信部により設定されたシンボル期間単位の同期パルス発生時刻に対して1有効シンボル期間経過後の時刻から、1ガード信号分の期間の時刻に開始し、前記テレビ受信部の整数シンボル分毎に発生し、一方前記無線通信部の受信タイミングは所定の送信タイミングに対応した動作であることを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0069】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置であって、単数あるいは複数の無線通信装置とデジタルテレビ受信装置がそれぞれ独立の装置であり相互をデーター信号および制御信号などのケーブルで接続して使用する形態であることを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0070】
また、本発明は、無線通信装置を接続可能なデジタルテレビ受信装置であって、単数あるいは複数の無線通信装置とデジタルテレビ受信装置が一体型の装置として構成され、相互の機能を内部のデーター信号および制御信号などのケーブルで接続して使用する形態であることを特徴とするものであり、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の送信タイミングによるバースト的な妨害波を受けることのないデジタルテレビ受信装置を実現できるものである。
【0071】
【発明の効果】
以上のように、本発明によれば、テレビ放送を受信しながら無線通信を行う場合でも、無線通信機能の通信動作に伴うバースト的な妨害波を受けることのないデジタルテレビ受信装置等が提供できる。
【図面の簡単な説明】
【図1】本発明の実施の形態におけるデジタルテレビ受信装置の構成図
【図2】本発明の実施の形態におけるデジタルテレビ受信装置のフロー説明図
【図3】本発明の実施の形態におけるデジタルテレビ受信装置のタイミング説明図
【図4】本発明の実施の形態におけるデジタルテレビ受信装置のタイミング説明図
【図5】従来例の説明図
【符号の説明】
10  第1のアンテナ
11  スイッチ
12  送出回路
13  選局回路
14  第1の変調回路
15  第1の復調回路
16  データ多重/分離回路
17  データ復号回路
18  送受手順制御回路
19  入力部
30  第2のアンテナ
31  チューナ
32  第2の復調回路
33  TS分離回路
34  映像復号回路
35  音声復号回路
36  合成回路
37  モニター
38  スピーカー
50  テレビ受信部
51  無線通信部
52  CPU
53  放送局
54  無線通信局
91  情報処理装置
92  無線通信装置
93  信号伝送部
94  情報処理部
95  制御部
96  制御部
97  無線通信部
98  アンテナ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital television receiver and the like used by connecting to a wireless communication device.
[0002]
[Prior art]
In recent years, a service range of wireless communication such as a mobile phone, a PHS, and a wireless LAN has been expanding. Particularly, a wireless communication device such as a mobile phone is often used by connecting to a personal computer.
[0003]
The prior art is exemplified from Japanese Patent Application Laid-Open No. 8-255117, "Information processing apparatus, wireless communication apparatus used by connecting to the same, and wireless communication system using these apparatuses", and the configuration is shown in FIG. This wireless communication system, when using an information processing device such as a personal computer by connecting it to a wireless communication device such as a PC card, avoids the influence of unnecessary radiation from the information processing device, thereby enabling wireless communication. The purpose is to improve the communication quality of the wireless communication of the device.
[0004]
As illustrated in FIG. 5, the information processing unit 94 of the information processing device 91 uses the control signal supplied from the wireless communication device 92 via the signal transmission unit 93 to stop the operation of the information processing unit 94 or increase or decrease the operation speed. Control.
[0005]
As described above, by controlling the operation of the information processing device 91 in accordance with the wireless communication operation of the wireless communication device 92, it is possible to avoid the influence of unnecessary radiation from the information processing device 91 on the wireless communication frequency band, Information communication that satisfies wireless communication quality, for example, signal band noise ratio and error rate, can be performed.
[0006]
[Problems to be solved by the invention]
On the other hand, as another device used in combination with the wireless communication device, in addition to the information processing device described above, a device having a broadcast receiving function such as a television can be considered. In the broadcasting field, in particular, following the launch of CS and BS digital broadcasting services, preparations for terrestrial digitalization are steadily proceeding, and in the future these broadcasting and telecommunication business services will be integrated. Is expected to be realized. Further, in view of the fact that the development of miniaturization and low power consumption technologies is rapidly accelerating, it is considered that commercialization of a product in which a wireless communication function and a broadcast reception function are integrated is desired.
[0007]
However, in a use mode in which the wireless communication function and the broadcast reception function are connected, or in a device mode in which the two are integrated, when performing wireless communication while receiving a television broadcast, burst transmission due to the transmission timing of the wireless communication function may occur. It is sometimes difficult or impossible to receive broadcast waves due to unnecessary radiation, power supply ripple, and ground bounce.
[0008]
In particular, this tendency becomes more remarkable as the form of the terminal becomes smaller and the power consumption becomes lower. For this reason, it has been difficult or impossible for the terminal of the use form to perform wireless communication simultaneously with reception of the television broadcast. These problems could not be sufficiently solved by the above-mentioned conventional technology.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in consideration of the above problems, and has been made in consideration of the problems described above. And a digital television receiver capable of performing the above-mentioned operations.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention is a digital television receiver to which a wireless communication device is connected,
When operating the wireless communication device, detecting means for detecting a period that is strong in noise among the received signals of the digital television receiver,
A digital television receiver comprising: a control unit that controls at least a transmission operation of the wireless communication device during a period that is strong against the noise.
[0011]
Further, the second invention is the digital television receiver according to the first invention, wherein the control means controls the wireless communication device to perform a receiving operation during a period that is strong against the noise.
[0012]
Further, the third invention is the digital television receiver according to the first or second invention, wherein the reception signal is composed of a plurality of segments having a header section and an actual data section.
[0013]
In a fourth aspect of the present invention, the period resistant to the noise is predetermined based on a predetermined position during reception of the segment,
The digital television receiving apparatus according to a third aspect of the present invention, wherein the detecting unit detects the period resistant to the noise by detecting the predetermined position.
[0014]
A fifth aspect of the present invention is the digital television receiver according to the fourth aspect of the present invention, wherein the predetermined position is included in the header section and indicates a synchronous position of the segment. .
[0015]
In a sixth aspect of the present invention, the detecting means detects a predetermined period of the segment once or a plurality of times, and obtains a period resistant to the noise based on the predetermined period. It is a television receiver.
[0016]
A seventh invention is the digital television receiver according to the third or sixth invention, wherein the segment corresponds to a symbol or a frame in the ISDB-T system.
[0017]
Further, in the eighth invention, the reception signal to be detected by the detection means may be a signal on a transmission path from an antenna to which the digital television is connected or a feeding point of the antenna to the detection means. 1 is a digital television receiver according to the first aspect of the present invention.
[0018]
A ninth aspect of the present invention relates to a wireless communication device to which a digital television receiver is connected,
Detecting means for detecting a period that is strong in noise among the reception signals of the digital television receiver,
A wireless communication apparatus comprising: a control unit that performs control so as to perform at least a transmission operation during a period that is strong against the noise.
[0019]
A tenth aspect of the present invention is a method for controlling a digital television receiver to which a wireless communication device is connected,
When operating the wireless communication device, a step of detecting a period that is strong in noise among the received signals of the digital television receiver,
Controlling the digital communication device to perform at least the transmission operation of the wireless communication device during the period resistant to the noise.
[0020]
According to an eleventh aspect of the present invention, in the digital television receiver according to the first aspect of the present invention, when the wireless communication device is operated, a detecting means for detecting a period of the received signal of the digital television receiver which is strong against noise. And a computer that functions as a whole or a part of a control unit that performs control so that at least the transmission operation of the wireless communication device is performed during a period that is strong against the noise.
[0021]
A twelfth aspect of the present invention is a medium that carries the program of the eleventh aspect of the present invention, and is a medium that can be processed by a computer.
[0022]
As an example of the present invention as described above, in a digital television receiver to which a wireless communication device can be connected, when the wireless communication device is operated, the reception performance of the received signal of the digital television receiver is improved. Start time of transmission and reception so as to detect a period having little influence, perform arbitration of transmission / reception timing in advance with a communication device facing the communication device, and perform a predetermined transmission operation of the wireless communication device in the range of the detection period. May be controlled.
[0023]
According to the present invention, in a use mode in which a wireless communication function and a broadcast reception function are connected, or in an apparatus mode used by integrating the radio communication function and the broadcast reception function, the transmission timing of the wireless communication function is performed even when performing wireless communication while receiving a TV broadcast. , A television receiver that does not receive bursty interference waves due to the above.
[0024]
The present invention also provides a digital television receiver to which a wireless communication device can be connected, wherein when the wireless communication device is operated, a period during which the reception performance of the digital television receiver is less affected by the reception performance is detected. Then, the transmission and reception timing may be arbitrated with the opposing communication device in advance, and the transmission and reception cycles may be controlled so that the wireless communication device performs the transmission operation within the detection period.
[0025]
According to the present invention, in a use mode in which a wireless communication function and a broadcast reception function are connected, or in an apparatus mode used by integrating the radio communication function and the broadcast reception function, the transmission timing of the wireless communication function is performed even when performing wireless communication while receiving TV broadcast , A television receiver that does not receive bursty interference waves due to the above.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
(Mode of the Invention)
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1, 2, and 3. FIG.
[0027]
FIG. 1 is a configuration diagram of a digital television receiver to which a wireless communication device according to the present embodiment can be connected. As shown in the figure, the digital television receiver includes a television receiver 50 for receiving a signal from a broadcast station 53, a wireless communication unit 51 for communicating with a wireless communication station 54, and a CPU 52 for controlling both. Is done. Note that the television receiver 50 and the wireless communication unit 51 may have different configurations, or may have a configuration integrated in the same housing.
[0028]
In the wireless communication unit 51, the first antenna 10 is for efficiently transmitting and receiving radio waves to and from the wireless communication station 54 in space, and the channel selection circuit 13 and the first demodulation circuit 15 A first receiving means for receiving a predetermined frequency band signal from a high frequency signal obtained by the first antenna 10 at a predetermined timing and converting the signal into a digital signal, and the transmission circuit 12 and the first modulation circuit 14 A first transmitting means for converting a digital signal to be transmitted into a predetermined high-frequency band signal and transmitting the signal at a predetermined timing by the antenna is configured. This is a means having a function of converting the input signal from the first demodulation circuit 15 into output data by a predetermined process, and a function of converting the input signal from the first demodulation circuit 15 into packet data by a predetermined process. Reference numeral 17 denotes a data encoding / decoding circuit, and reference numeral 19 denotes a data input unit. The transmission / reception procedure control circuit 18 constitutes first information processing means for controlling predetermined timing for operating the first transmission means and the first reception means.
[0029]
Further, in the television receiver 50, the second antenna 30 is for efficiently receiving a broadcast wave from a broadcasting station in the air, and the tuner 31 and the second demodulation circuit 32 are provided with a high-frequency signal obtained by the antenna. And a second receiving means for receiving a predetermined frequency band signal from the digital signal and converting the digital signal into a digital signal. The TS separating circuit 33, the video decoding circuit 34 and the audio decoding circuit 35 convert the digital signal into output data by predetermined processing. A second information processing unit for conversion is configured, and the combining circuit 36 configures a unit for combining the output data and the output data from the wireless communication unit.
[0030]
Further, the CPU 52 implements control means for arbitrating between the wireless communication unit and the television receiving unit.
[0031]
The operation of the digital television receiving apparatus according to the first embodiment having the above-described configuration will be described below, and FIG. 2 will be described with reference to FIG. The description will be made with reference to FIG. However, FIG. 2 is a diagram showing a processing flow up to the start of wireless communication. In the following description, regarding the receiving operation of the television receiving unit, a portion not directly related to the present invention will not be described for simplicity.
[0032]
When receiving an instruction to start communication from the input unit 19 (Step 201), the CPU 52 determines whether or not the television receiving unit 50 is performing television reception (Step 202). This determination is made, for example, by the CPU 52 detecting the operation state of the second demodulation circuit 32. Further, the operation state of the tuner 32 may be detected. When it is determined that the television reception is not performed, the wireless communication is executed at an arbitrary timing.
[0033]
If television reception is being performed, when the CPU 52 obtains a digital reception signal from the second demodulation circuit 32, the CPU 52 detects a synchronization position described later (step 203). Next, the CPU 52 detects an optimal period for the wireless communication unit 51 to perform a transmission operation based on the detected synchronization position (Step 204).
[0034]
Here, the above-described optimal period for the wireless communication unit 51 to perform the transmission operation will be described with reference to FIG. As a broadcast received by the television receiver 50, an ISDB-T system adopted as a domestic terrestrial digital broadcasting system is taken as an example. The received signal is configured with a predetermined time length called a frame as a unit of a data segment, and is a data string formed by a plurality of frames. Further, one frame is composed of a data segment of a predetermined time length called a symbol (a length different from the predetermined time length of the frame).
[0035]
In the figure, received signals # 1, # 2,. . . The symbol shown as is composed of a valid part which is a predetermined period and a guard part which is a signal obtained by adding a part of the rear part of the valid part to the head of the valid symbol, and receives received signal # 1, received signal # 2,. ····································································································································· /
[0036]
In each symbol, a signal necessary for processing after the TS separation circuit 33 is an effective part of the guard part and the effective part, and the second demodulation circuit 32 performs a wireless communication during the reception part tu of the effective part. When the operation of the unit 51 is performed, the burst noise as described above has an adverse effect on unnecessary data, such as unnecessary radiation, power supply ripple, and ground bounce.
[0037]
Therefore, in the present embodiment, the wireless communication unit 51 is operated during the reception period tg of the guard unit, which is relatively resistant to noise, so that the influence of noise due to the operation of the wireless communication unit 51 is reduced by the television receiving unit. Prevents the video from being received. At this time, a reception signal to be detected by the CPU 52 is a signal on a transmission path from the antenna 30 to which the television receiver 50 is connected to the second demodulation circuit 32. Alternatively, a signal on the transmission path from the feeding point of the antenna 32 (not shown) to the second demodulation circuit 32 is used. Note that this transmission path corresponds to the transmission path of the present invention, and the second demodulation circuit 32 and the CPU 52 may be regarded as equivalent means in terms of arrangement on the transmission path.
[0038]
Here, there are several methods for the CPU 52 to detect the period tg during which the guard portion is received. However, the CPU 52 detects the symbol synchronization position included in the guard portion of each symbol, and detects the symbol synchronization position before and after including the symbol synchronization position. A preset time length may be regarded as the period tg. In the example shown in FIG. 3, since the symbol synchronization position is provided near the latter half of the guard section, the preset time length is the time length tg1 before the detection position of the symbol synchronization position and the detection of the symbol synchronization position. This is the sum of the time length tg2 after the point.
[0039]
Alternatively, one or more symbols may be acquired in advance, the actual time length of the guard portion of each symbol may be detected, and a representative value or an average value of these values may be regarded as the period tg. In the above operation, the CPU 52 must always detect the starting point of the guard unit, and operate the wireless communication unit 51 during the period tg from this point.
[0040]
Returning to the processing flow of FIG. 2 again, the CPU 52 performs predetermined communication with the transmission / reception procedure control circuit 18 in order to operate the wireless communication unit 51 during a period that is strong against the detected noise, and determines the timing of actual communication. A decision is made (step 205).
[0041]
The transmission / reception procedure control circuit 18 operates the first modulation circuit 14 and the transmission circuit 12 or the first demodulation circuit 15 and the electoral district circuit 13 based on the information about the period resistant to noise from the CPU 52. Then, the transmission or reception operation is executed.
[0042]
In the example shown in FIG. 3, the period during which the transmission operation of the wireless communication unit 51 is performed is all within the time length of the guard unit and earlier than the symbol synchronization position.
[0043]
On the other hand, the time during which the reception operation of the wireless communication unit 51 is performed is after the symbol synchronization position, and the period extends from the guard unit to a part of the time length of the effective unit. The timing of receiving processing for each symbol is determined by the receiver as a symbol synchronization position and a synchronization signal.
[0044]
In the operation of the wireless communication unit 51, the influence on the television receiver 50 is greater in the transmitting operation than in the receiving operation. Therefore, as shown in FIG. 3, if at least the transmission operation of the operation of the wireless communication unit 51 is performed within the time length of the guard unit, the wireless communication can be performed even when the wireless communication is performed while receiving the television broadcast. It is possible to prevent the influence of a bursty interference wave accompanying the transmission of the communication function, and it is possible to perform good television reception.
[0045]
Next, in the example illustrated in FIG. 4, the period during which the transmission operation and the reception operation of the wireless communication unit 51 are performed is all within the time length of the guard unit and earlier than the symbol synchronization position. Thus, in addition to the effect of the example shown in FIG. 3, it is possible to prevent the influence of a bursty interference wave accompanying the reception of the wireless communication function, and it is possible to perform better television reception.
[0046]
FIGS. 3 and 4 show an example in which transmission / reception of wireless communication is performed once for each symbol, and the operation is performed only for received signals # 1 and #n. It is needless to say that the same is true.
[0047]
In the above operation, the description has been made assuming that the received signal is handled in units of symbols, but may be handled in units of frames. In this case, the frame is divided into a part of the frame corresponding to the guard part of the symbol and a remaining part corresponding to the effective part of the symbol, and at least the transmission operation of the wireless communication unit 51 is performed in the part. By doing so, a similar effect can be obtained.
[0048]
In the above embodiment, the CPU 52 corresponds to the detecting means of the present invention, and the transmission / reception procedure control circuit 18 corresponds to the controlling means of the present invention. Further, the symbols constituting the received signal correspond to the segment of the present invention, the guard section corresponds to the header section of the present invention, the effective section corresponds to the actual data section of the present invention, and the symbol synchronization position corresponds to the reception of the segment of the present invention. It corresponds to a predetermined position in the inside.
[0049]
Further, in the above description, the transmission / reception procedure control circuit 18 has been described as being built in the wireless communication unit 51, but this may be built in the television reception unit 50. By incorporating the CPU 52 and the transmission / reception procedure control circuit 18 in the television receiver 50, a digital television receiver as a single unit according to the present invention is configured. At this time, the wireless communication unit 51 performs wireless communication as a single unit according to the present invention. It will correspond to the device.
[0050]
Further, by incorporating the CPU 52 in the wireless communication unit 51, the wireless communication unit 51 may be realized as a single wireless communication device of the present invention.
[0051]
Further, the present invention is a program for causing a computer to execute the functions of all or a part of the digital television receiver of the present invention described above (or an apparatus, an element, a circuit, a unit, or the like). It may be a program that operates in cooperation.
[0052]
Further, the present invention is a medium carrying a program for causing a computer to execute all or a part of the functions of all or part of the digital television receiver of the present invention described above, and is readable by a computer, The read program may be a medium that executes the function in cooperation with the computer.
[0053]
Note that some means (or devices, elements, circuits, units, and the like) of the present invention and some steps (or steps, operations, functions, and the like) of the present invention refer to a plurality of these means or steps. Means some means or steps, or some functions or some operations within one means or step.
[0054]
In addition, some devices (or elements, circuits, units, and the like) of the present invention mean some of the plurality of devices, or some of the one device. (Or an element, a circuit, a part, or the like), or a part of the function of one means.
[0055]
The present invention also includes a computer-readable recording medium that records the program of the present invention.
[0056]
Further, one usage form of the program of the present invention may be a form in which the program is recorded on a computer-readable recording medium and operates in cooperation with the computer.
[0057]
One use form of the program of the present invention may be a form in which the program is transmitted through a transmission medium, read by a computer, and operates in cooperation with the computer.
[0058]
Further, the data structure of the present invention includes a database, a data format, a data table, a data list, a type of data, and the like.
[0059]
The recording medium includes a ROM and the like, and the transmission medium includes a transmission mechanism such as the Internet, light, radio waves, and sound waves.
[0060]
Further, the above-described computer of the present invention is not limited to pure hardware such as a CPU, but may include firmware, an OS, and peripheral devices.
[0061]
Note that, as described above, the configuration of the present invention may be realized by software or hardware.
[0062]
The present invention as described above may be further realized in the following forms.
[0063]
In other words, the present invention provides a digital television receiver to which a wireless communication device can be connected, wherein when the wireless communication device is operated, a period during which the reception performance of the received signal of the digital television receiving device has little effect on the reception performance is detected. And arbitrating transmission / reception timing with an opposing communication device in advance, and controlling transmission and reception start times such that a predetermined transmission operation of the wireless communication device is performed in the range of the detection period. Thus, even when performing wireless communication while receiving a television broadcast, it is possible to realize a digital television receiver that does not receive bursty interference waves due to the transmission timing of the wireless communication function.
[0064]
Further, the present invention is a digital television receiver to which a wireless communication device can be connected, wherein the first antenna efficiently transmits and receives radio waves to and from a wireless communication station in space, and the antenna is obtained by the antenna. First receiving means for receiving a predetermined frequency band signal from a high frequency signal at a predetermined timing and converting it into a digital signal; converting a digital signal to be transmitted into a predetermined high frequency band signal and transmitting the signal at a predetermined timing by the antenna; A first transmitting unit for performing the processing, a function of converting information from the input unit into packet data by a predetermined process and outputting the packet data to the first transmitting unit, and a process of converting an input signal from the first receiving unit into a predetermined process. A first information processing unit having a function of converting the data into output data and controlling a predetermined timing for operating the first transmitting unit and the first receiving unit; A second antenna for efficiently receiving airwaves from a broadcasting station in the air, and a predetermined frequency band signal received from a high-frequency signal obtained by the antenna and converted into a digital signal. Second receiving means, second information processing means for converting the digital signal into output data by predetermined processing, means for synthesizing the output data and output data from the wireless communication unit, A television receiving unit comprising means for displaying, and a control unit for arbitrating between the second receiving unit and the first information processing unit, and when operating the wireless communication apparatus, Detecting a period during which the reception performance of the digital television receiver has a small effect on the reception performance, arbitrating transmission / reception timing with a communication device facing in advance in advance, It is characterized by controlling the start time of transmission and reception so as to perform a predetermined transmission operation of the wireless communication device in the range of the detection period, even when performing wireless communication while receiving a television broadcast, It is possible to realize a digital television receiver that does not receive a burst interference wave due to the transmission timing of the wireless communication function.
[0065]
Further, the present invention provides a digital television receiver to which a wireless communication device can be connected, wherein a plurality of symbols forming a frame are generated by orthogonal frequency division multiplexing of digital data allocated for a predetermined period, and the symbol is generated in the predetermined period. A broadcast transmitted by converting an effective symbol and a signal added to the beginning of the effective symbol as a guard signal using a part of the rear part of the effective symbol into an assigned single frequency band, and a plurality of times. A frame is constituted by slots, and a radio communication for transmitting and receiving a time-division multiplexed signal by allocating a single or a plurality of frequency bands to the respective time slots via a transmitter and a receiver, for a plurality of transmission systems, 3. A digital television receiver connectable to the wireless communication device according to claim 1, wherein the time slot of the wireless communication device is The transmission timing starts from a time after one valid symbol period elapses with respect to a synchronization pulse generation time in a symbol period unit set by the television receiver, to a time corresponding to one guard signal period. The reception timing is characterized in that it is an operation corresponding to a predetermined transmission timing. Even when wireless communication is performed while receiving a television broadcast, a burst-like interference wave due to the transmission timing of the wireless communication function is received. It is possible to realize a digital television receiving apparatus without any problem.
[0066]
The present invention also provides a digital television receiver to which a wireless communication device can be connected, wherein when the wireless communication device is operated, a period during which the reception performance of the digital television receiver is less affected by the reception performance is detected. And arbitrating transmission / reception timing in advance with an opposing communication device, and controlling a transmission and reception cycle so as to perform a transmission operation of the wireless communication device within the range of the detection period. In addition, even when wireless communication is performed while receiving a television broadcast, a digital television receiver that does not receive bursty interference waves due to the transmission timing of the wireless communication function can be realized.
[0067]
According to the present invention, there is provided a digital television receiver connectable to a wireless communication device, comprising: a first antenna for efficiently transmitting and receiving radio waves to and from a wireless communication station in space; and a high-frequency signal obtained by the antenna. A first receiving means for receiving a predetermined frequency band signal at a predetermined timing and converting it into a digital signal, and converting a digital signal to be transmitted into a predetermined high frequency band signal and transmitting it at a predetermined timing by the antenna A function of converting information from the input means into packet data by a predetermined process and outputting the packet data to the first transmitting unit; and outputting an input signal from the first receiving means to the output data by a predetermined process. A first information processing unit that has a function of converting the first information into a predetermined timing and controls predetermined timing for operating the first transmitting unit and the first receiving unit. A second antenna for efficiently receiving airwaves from a broadcasting station in the air, and a second antenna for receiving a predetermined frequency band signal from a high-frequency signal obtained by the antenna and converting the signal into a digital signal. Receiving means, second information processing means for converting the digital signal into output data by predetermined processing, means for synthesizing the output data and output data from the wireless communication section, and displaying the synthesized data And a control unit for arbitrating between the second receiving unit and the first information processing unit, and when operating the wireless communication apparatus, A period in which the reception performance of the digital television receiver is less affected by the reception performance is detected, and arbitration of transmission / reception timing is performed in advance with the opposing communication device. The transmission and reception cycle is controlled so as to perform the transmission operation of the wireless communication device in a range of a period. Even when performing wireless communication while receiving a television broadcast, the transmission timing of the wireless communication function may be controlled. Thus, a digital television receiver which does not receive a burst-like interference wave due to the present invention can be realized.
[0068]
Further, according to the present invention, a plurality of symbols constituting a frame are generated by orthogonal frequency division multiplexing of digital data allocated in a predetermined period, and a part of a rear part of the effective symbol and the effective symbol that is the predetermined period is generated. A broadcast signal transmitted by converting a signal added to the head of the effective symbol as a guard signal into a single assigned frequency band and a plurality of time slots constitute a frame. 5. The wireless communication apparatus according to claim 1, wherein one or a plurality of frequency bands are assigned and time-division multiplexed signals are transmitted and received via a transmitter and a receiver. In a possible digital television receiver, the timing of transmitting the time slot of the wireless communication device is determined by the synchronizing time set by the television receiver. Starting from a time after one valid symbol period elapses with respect to a synchronization pulse generation time in units of a television signal, and starting at a time corresponding to one guard signal period, and is generated for every integer symbol of the television receiver. The reception timing of the section is characterized by an operation corresponding to a predetermined transmission timing, and even when performing wireless communication while receiving a television broadcast, a burst-like interference wave due to the transmission timing of the wireless communication function is generated. It is possible to realize a digital television receiving apparatus which does not receive the digital television.
[0069]
The present invention also relates to a digital television receiver to which a wireless communication device can be connected, in which one or more wireless communication devices and the digital television receiver are independent devices, and each has a cable such as a data signal and a control signal. Digital TV that does not receive bursty interference waves due to the transmission timing of the wireless communication function even when performing wireless communication while receiving TV broadcasts. A receiving device can be realized.
[0070]
Further, the present invention is a digital television receiver to which a wireless communication device can be connected, wherein one or more wireless communication devices and the digital television receiver are configured as an integrated device, and the mutual function is provided by an internal data signal. It is characterized in that it is used by connecting it with a cable such as a control signal, and even when performing wireless communication while receiving TV broadcasting, bursty interference waves due to the transmission timing of the wireless communication function It is possible to realize a digital television receiving apparatus which does not receive the digital television.
[0071]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a digital television receiving apparatus or the like that does not receive a bursty interference wave due to the communication operation of the wireless communication function even when performing wireless communication while receiving a television broadcast. .
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a digital television receiver according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating a digital television receiver according to an embodiment of the present invention.
FIG. 3 is an explanatory timing chart of the digital television receiver according to the embodiment of the present invention.
FIG. 4 is a timing explanatory diagram of the digital television receiver according to the embodiment of the present invention.
FIG. 5 is an explanatory view of a conventional example.
[Explanation of symbols]
10 First antenna
11 switch
12 sending circuit
13 Tuning circuit
14 1st modulation circuit
15 First demodulation circuit
16 Data multiplexing / demultiplexing circuit
17 Data decoding circuit
18 Transmission / reception procedure control circuit
19 Input section
30 Second antenna
31 Tuner
32 Second demodulation circuit
33 TS separation circuit
34 Video Decoding Circuit
35 voice decoding circuit
36 Synthesis circuit
37 monitors
38 speakers
50 TV receiver
51 Wireless communication unit
52 CPU
53 broadcast stations
54 wireless communication stations
91 Information processing device
92 Wireless communication device
93 signal transmission section
94 Information Processing Department
95 Control unit
96 control unit
97 Wireless communication unit
98 antenna

Claims (12)

無線通信装置が接続されたデジタルテレビ受信装置において、
前記無線通信装置を動作させる場合に、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する検出手段と、
前記ノイズに強い期間に、少なくとも前記無線通信装置の送信動作を行わせるよう制御を行う制御手段とを備えたデジタルテレビ受信装置。
In a digital television receiver to which a wireless communication device is connected,
When operating the wireless communication device, detecting means for detecting a period that is strong in noise among the received signals of the digital television receiver,
A digital television receiver comprising: control means for performing control so that at least the transmission operation of the wireless communication device is performed during a period in which the noise is strong.
前記制御手段は、前記ノイズに強い期間に、前記無線通信装置の受信動作を行わせるよう制御を行う請求項1に記載のデジタルテレビ受信装置。The digital television receiver according to claim 1, wherein the control unit controls the wireless communication device to perform a reception operation during a period that is strong against the noise. 前記受信信号は、ヘッダ部と実データ部とを有する複数のセグメントから構成される請求項1または2に記載のデジタルテレビ受信装置。The digital television receiver according to claim 1, wherein the reception signal includes a plurality of segments having a header section and an actual data section. 前記ノイズに強い期間は、前記セグメントの受信中における所定の位置に基づきあらかじめ定められており、
前記検出手段は、前記所定の位置を検出することにより前記ノイズに強い期間を検出する請求項3に記載のデジタルテレビ受信装置。
The period resistant to the noise is predetermined based on a predetermined position during reception of the segment,
The digital television receiver according to claim 3, wherein the detection unit detects the period resistant to the noise by detecting the predetermined position.
前記所定の位置は、前記ヘッダ部に含まれているものであって、前記セグメントの同期位置を示すものである請求項4に記載のデジタルテレビ受信装置。The digital television receiver according to claim 4, wherein the predetermined position is included in the header portion and indicates a synchronization position of the segment. 前記検出手段は、前記セグメントの所定の期間を一回または複数回検出し、その所定の期間に基づき、前記ノイズに強い期間を得る請求項3に記載のデジタルテレビ受信装置。The digital television receiver according to claim 3, wherein the detection unit detects a predetermined period of the segment once or a plurality of times, and obtains a period resistant to the noise based on the predetermined period. 前記セグメントは、ISDB−T方式におけるシンボルまたはフレームに相当するものである請求項3または6に記載のデジタルテレビ受信装置。The digital television receiver according to claim 3, wherein the segment corresponds to a symbol or a frame in the ISDB-T system. 前記検出手段の検出動作の対象となる前記受信信号は、前記デジタルテレビが接続されたアンテナまたは前記アンテナの給電点から、前記検出手段までの伝送路にある信号である請求項1に記載のデジタルテレビ受信装置。The digital signal according to claim 1, wherein the reception signal to be detected by the detection means is a signal on a transmission path from an antenna to which the digital television is connected or a feeding point of the antenna to the detection means. Television receiver. デジタルテレビ受信装置が接続された無線通信装置において、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する検出手段と、
前記ノイズに強い期間に、少なくとも送信動作を行わせるよう制御を行う制御手段とを備えた無線通信装置。
In the wireless communication device to which the digital television receiving device is connected, a detecting unit that detects a period that is strong in noise among the reception signals of the digital television receiving device,
A wireless communication device comprising: a control unit that performs control so as to perform at least a transmission operation during the period that is strong against the noise.
無線通信装置が接続されたデジタルテレビ受信装置の制御方法であって、
前記無線通信装置を動作させる場合に、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する工程と、
前記ノイズに強い期間に、少なくとも前記無線通信装置の送信動作を行わせるよう制御を行う工程とを備えたデジタルテレビ受信装置の制御方法。
A method for controlling a digital television receiving device to which a wireless communication device is connected,
When operating the wireless communication device, a step of detecting a period that is strong in noise among the received signals of the digital television receiver,
Performing a control so that at least the transmission operation of the wireless communication device is performed during the period resistant to the noise.
請求項1に記載のデジタルテレビ受信装置における、前記無線通信装置を動作させる場合に、前記デジタルテレビ受信装置の受信信号のうちノイズに強い期間を検出する検出手段と、前記ノイズに強い期間に、少なくとも前記無線通信装置の送信動作を行わせるよう制御を行う制御手段との全部または一部としてコンピュータを機能させるためのプログラム。In the digital television receiving device according to claim 1, when operating the wireless communication device, a detecting unit that detects a period that is strong against noise in the received signal of the digital television receiving device, and a period that is strong against noise, A program for causing a computer to function as all or a part of control means for performing control so that at least the transmission operation of the wireless communication device is performed. 請求項11に記載のプログラムを担持した媒体であって、コンピュータにより処理可能な媒体。A medium carrying the program according to claim 11, wherein the medium can be processed by a computer.
JP2002204010A 2002-07-12 2002-07-12 Digital television receiver, wireless communication device, digital television receiver system, control method, program, and recording medium Expired - Fee Related JP4176405B2 (en)

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Publication number Priority date Publication date Assignee Title
WO2006115024A1 (en) * 2005-04-22 2006-11-02 Murata Manufacturing Co., Ltd. Mobile terminal equipped with tv
US7733373B2 (en) 2005-02-23 2010-06-08 Casio Hitachi Mobile Communications Co., Ltd. System and method of network-linked digital terrestrial television broadcasting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7733373B2 (en) 2005-02-23 2010-06-08 Casio Hitachi Mobile Communications Co., Ltd. System and method of network-linked digital terrestrial television broadcasting
WO2006115024A1 (en) * 2005-04-22 2006-11-02 Murata Manufacturing Co., Ltd. Mobile terminal equipped with tv

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