JP4535006B2 - テレビジョン装置 - Google Patents
テレビジョン装置 Download PDFInfo
- Publication number
- JP4535006B2 JP4535006B2 JP2006062689A JP2006062689A JP4535006B2 JP 4535006 B2 JP4535006 B2 JP 4535006B2 JP 2006062689 A JP2006062689 A JP 2006062689A JP 2006062689 A JP2006062689 A JP 2006062689A JP 4535006 B2 JP4535006 B2 JP 4535006B2
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- JP
- Japan
- Prior art keywords
- speaker
- signal
- display device
- distance
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000007246 mechanism Effects 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 22
- 230000003111 delayed effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001934 delay Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000005237 high-frequency sound signal Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 230000005238 low-frequency sound signal Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S370/00—Multiplex communications
- Y10S370/901—Wide area network
- Y10S370/902—Packet switching
- Y10S370/903—Osi compliant network
- Y10S370/906—Fiber data distribution interface, FDDI
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S370/00—Multiplex communications
- Y10S370/901—Wide area network
- Y10S370/902—Packet switching
- Y10S370/903—Osi compliant network
- Y10S370/907—Synchronous optical network, SONET
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99943—Generating database or data structure, e.g. via user interface
Description
このようなテレビジョン装置では、筐体の内部でディスプレイパネルの左右両側や下側にスピーカーが組み込まれる関係上、テレビジョン装置のデザインが制約を受け、デザイン性や美観を高める上で限界があった。
このテレビジョン装置は、薄板状のディスプレイ装置と、ディスプレイ装置に設けられた第1のスピーカーと、被載置箇所に載置される載置部と、載置部から上方に突出し載置部から離れた上方の箇所で前記ディスプレイ装置をその姿勢を変更可能に支持する支持機構と、載置部に設けられた第2のスピーカーとを備えている。
このようにディスプレイ装置に浮遊感を持たせディスプレイ装置をその姿勢を変更可能に支持するようにしたテレビジョン装置では、ディスプレイ装置を載置部よりもディスプレイ装置の前方に大きく引き出した状態とした場合、ユーザーの耳元から第1のスピーカーまでの距離に対し、ユーザーの耳元から第2のスピーカーまでの距離が遠くなる。
したがって、第1のスピーカーから発せられた音響がユーザーの耳元に先に到達し、第2のスピーカーから発せられた音響が第1のスピーカーからの音響よりも遅れてユーザーの耳元に到達することになり、違和感や不自然さを感じさせることが懸念される。
本発明は、このような事情に鑑みなされたもので、その目的は、良好な音質の音響を提供する上で有利なテレビジョン装置を提供することにある。
以下、本発明によるテレビジョン装置10の実施の形態を図面に基づいて詳細に説明する。
図1は第1の実施の形態のテレビジョン装置10の全体構成を示す斜視図である。
図1に示すように、テレビジョン装置10は、ディスプレイ装置12と、ディスプレイ装置12を支持するスタンド20と、第1のスピーカー50と、第2のスピーカー52と、距離検出部54とを備えている。
図1に示すように、ディスプレイ装置12は、薄板状のディスプレイパネル1202と、フレーム1204と、ディスプレイ駆動回路1210(図8参照)を備えている。
ディスプレイパネル1202の厚さ方向の一方の面は表示面として形成され、他方の面が背面となっており、本実施の形態では、ディスプレイパネル1202の厚さ方向の一方を前方といい、他方を後方という。
フレーム1204は薄板で形成され、ディスプレイパネル1202の背面を覆い、ディスプレイパネル1202を支持している。
本実施の形態では、ディスプレイパネル1202は有機ELディスプレイを用いて構成されている。なお、ディスプレイパネル1202はプラズマディスプレイや液晶ディスプレイなどを用いて構成されたものであってもよい。
図1に示すように、スタンド20は、基台22と、支柱24と、アーム26と、錘28とを備え、本実施の形態では、被載置箇所に載置される載置部が基台22により構成されている。
支柱24は基台22から上方に突設され、アーム26はその延在方向の中間部が支柱24の先端で支持され、ディスプレイ装置12はアーム26の先端で支持され、錘28はアーム26の後端に連結されている。
フレームの上部には、鉛直軸を中心に旋回調節可能にかつ上下方向に揺動調節可能に支持された半球面状の支持体30が設けられ、支持体30はカバー2202の上面から上方に露出し、支柱24はこの支持体30から突設され、本実施の形態では、支柱24は互いに平行して延在する2本のロッド2402で構成されている。
なお、フレームと支持体30との間には、従来公知の旋回機構、上下揺動機構が設けられるとともに、支持体30の旋回状態および上下揺動状態を維持するための摩擦機構が設けられ、したがって、使用者がディスプレイ装置12をあるいは支柱24を所望の姿勢に旋回あるいは上下揺動させたのち手を離すと、フレームに対する支柱24の角度が保持されるように構成されている。
図4、図5に示すように、支柱24とアーム26との結合箇所に、支柱24に対してアーム26を上下揺動可能に支持する上下揺動機構33と、ねじりコイルばね32と、支柱24に対してアーム26が上下揺動された状態を摩擦力により維持する摩擦機構34が設けられている。
ねじりコイルばね32は、ディスプレイ装置12の重量に基づいて支柱24に作用する回転モーメントと、錘28の重量に基づいて支柱24に作用する回転モーメントとを釣り合わせるものであり、支柱24とアーム26との結合箇所において、錘28の重量により生じる回転モーメントと協働してねじりコイルばね32の弾性力により生じる回転モーメントを、ディスプレイ装置12の重量とアーム26の重量により生じる回転モーメントに対抗させている。
筒状部材2602は、雄ねじ部材2408の軸部が挿通される内筒部2604と、この内筒部2604の半径方向外側に位置する外筒部2606とを備え、外筒部2606の外径はブラケット2404、2406とほぼ同一の寸法で形成されている。
そして、内筒部2604と外筒部2606との間の環状の空間に、ねじりコイルばね32が配設され、ねじりコイルばね32の一端3202がブラケット2404の壁面2410に係止され、ねじりコイルばね32の他端3204は、図4に点線矢印で示すようにねじりコイルばね32のコイル部の付勢力に抗して変位され筒状部材2602の壁面2610に係止され、ねじりコイルばね32の弾性力は雄ねじ部材2408の周方向において、支柱24とアーム26とにわたって作用している。
また、雄ねじ部材2408の弛緩緊締によりブラケット2404、2406間で筒状部材2602を締め付ける力が調整され、すなわちブラケット2404、2406と筒状部材2602の間に生じる摩擦力が調整され、支柱24に対してアーム26が上下に揺動された状態が維持される摩擦機構34が構成されている。
なお、摩擦機構34は上述の構成に限定されず、従来公知の様々な構造が採用可能であり、本実施の形態では、摩擦機構34を構成する雄ねじ部材2408、ブラケット2404、2406、筒状部材2602は上下揺動機構33の構成部材を兼用している。
したがって、使用者がアーム26をあるいはディスプレイ装置12を把持して、ディスプレイ装置12が所望の位置となるように支柱24に対して揺動させ手を離すと、ねじりコイルばね32、錘28、摩擦機構34により、支柱24に対するアーム26の角度が保持されるように構成されている。
図6に示すように、アーム26の先端とディスプレイ装置12との結合箇所には上下揺動機構36および摩擦機構38が設けられ、上下揺動機構36によりディスプレイ装置12がアーム26の先端に対して上下に揺動可能に連結され、摩擦機構38により、揺動されたディスプレイ装置12の姿勢が保持されるように構成されている。
図7に示すように、上下揺動機構36は、ディスプレイ装置12の背面に取着される一対の第1の部材36Aと、一対の第1の部材36Aの間に掛け渡された雄ねじ部材3606と、この雄ねじ部材3606に上下に揺動可能に連結された第2の部材36Bとを備え、第2の部材36Bは、スタンド20(アーム26)の先端に取着されている。
そして、雄ねじ部材3606の弛緩緊締により一対の第1の部材36Aによる第2の部材36Bの締め付け力が調整され、すなわち一対の第1の部材36Aと第2の部材36Bとの間に生じる摩擦力が調整され、アーム26に対してディスプレイ装置12が上下に揺動された状態が保持されるように構成されている。
なお、上下揺動機構36は上述の構成に限定されず、従来公知の様々な構造が採用可能であり、本実施の形態では、摩擦機構38を構成する一対の第1の部材36Aや第2の部材36B、雄ねじ部材3606が上下揺動機構36の構成部材を兼用している。
したがって、使用者がアーム26、ディスプレイ装置12を把持して、ディスプレイ装置12が所望の位置となるようにアーム26に対して揺動させ手を離すと、摩擦機構38により、アーム26に対するディスプレイ装置12の角度が保持されるように構成されている。
また、本実施の形態では、載置部から上方に突出し載置部から離れた上方の箇所でディスプレイ装置をその姿勢を変更可能に支持する支持機構が、支持体30、支柱24、アーム26、ねじりコイルばね32、錘28、摩擦機構34、38などにより構成されている。
信号ボックス40は、放送局から受信した電波、あるいは、外部装置から供給される映像信号および音声信号に基づいて、テレビジョン装置10のディスプレイパネル1202に画像を表示させるとともに、第1のスピーカー50、第2のスピーカー52から音響を出力させるものである。
図8は信号ボックス40の構成を示すブロック図である。
信号ボックス40は、受信回路4002、切り換え回路4004、画像信号処理回路4006、音声信号処理回路4008、リモコン受信回路4010、制御回路4012などを含んで構成され、信号ボックス40は、信号ボックス40とは別に設けられた操作部42および外部入力端子44と接続されている。
操作部42は、ユーザーが操作することでテレビジョン装置10による放送の視聴にまつわる種々の操作や設定を行うためのものであり、例えば、選局用ボタン、音量調整用ボタン、音質調整用ボタン、入力切り換え用ボタンなどを含み、操作部42は、例えば、カバー2202の外面箇所に設けられている。
本実施の形態では、操作部42は、第1、第2のスピーカー50、52から出力される音響のタイミングの時間差を手動で設定するためのタイミング操作部4202(図9参照)を含んでいる。タイミング操作部4202は、操作用のボタンあるいは操作用のつまみを含み、カバー2202の外面箇所に設けられている。
外部入力端子44は、DVDプレーヤーやビデオデッキなどの外部装置から供給される画像信号および音声信号を入力する端子であり、例えば、カバー2202の外面箇所に設けられている。
受信回路4002は、制御回路4012からの指令に基づいて選局を行い、アンテナ4001から受信したテレビジョン信号を復調して画像信号と音声信号に分離して出力する。
切り換え回路4004は、受信回路4002から供給される画像信号および音声信号と、前記外部装置から外部入力端子44を介して供給される画像信号および音声信号とを切り換えて画像信号処理回路4006および音声信号処理回路4008に供給する。
画像信号処理回路4006は、前記画像信号に対して必要な信号処理を行い、ディスプレイ装置12を駆動するための駆動信号を生成し、ディスプレイ装置12に供給する。
音声信号処理回路4008は、前記音声信号に対して必要な信号処理および増幅処理を行なって第1のスピーカー50および第2のスピーカー52に供給する。これにより第1のスピーカー50および第2のスピーカー52から音響が出力される。
リモコン受信回路4010は、テレビジョン装置10とは別に設けられたリモコン送信機46から送信される選局、音量調整、入力切り換えなど各種動作を指令する制御コマンドを無線信号(赤外線信号)によって受信し、その受信した制御コマンドを制御回路4012に供給する。
制御回路4012は、操作部42の操作に基づいて、あるいは、リモコン受信回路4010から供給される前記制御コマンドに基づいて、受信回路4002の選局制御、切り換え回路4004の画像信号および音声信号の切り換え制御、画像信号処理回路4006、音声信号処理回路4008の制御などを行う。
また、ディスプレイ装置12に設けられたディスプレイ駆動回路1210は、画像信号処理回路4006から供給される前記駆動信号に基づいてディスプレイパネル1202を駆動することで、表示面に画像を表示させる。
第1、第2のスピーカー50、52は、互いに切り離されて配置されている。
本実施の形態では、図1に示すように、第1のスピーカー50はディスプレイ装置12側に設けられ、第2のスピーカー52は基台22側に設けられている。
より詳細には、第1のスピーカー50は、ディスプレイ装置12のフレーム1204の下部の左右両側の箇所にそれぞれ組み込まれ、前方に臨むように配設されている。
本実施の形態では、第1のスピーカー50は、左チャンネル用のスピーカー50Aと、右チャンネル用のスピーカー50Bとで構成されており、第1のスピーカー50は、高音域の音響を発するように構成されている。
また、第2のスピーカー52は、前方に臨むカバー2202の前面2202Aの左右両側の箇所に設けられている。
本実施の形態では、第2のスピーカー52は、左チャンネル用のスピーカー52Aと、右チャンネル用のスピーカー52Bとで構成され、第2のスピーカー52は、中音域および低音域の音響を発するように構成されている。
図1に示すように、距離検出部54は、第1のスピーカー50と第2のスピーカー52との間の距離を測距するものである。
本実施の形態では、距離検出部54は、第1のスピーカー50近傍のフレーム1204箇所に設けられた赤外線送信部5402と、第2のスピーカー52近傍のカバー2202の箇所に設けられた赤外線受信部5404とを有し、赤外線送信部5402から送信された赤外線信号を赤外線受信部5404で受信することによって赤外線送信部5402と赤外線受信部5404との間の距離を第1のスピーカー50と第2のスピーカー52との間の距離として検出して検出信号を生成する。
なお、距離検出部54は本実施の形態のような赤外線を用いたものの他に、超音波を用いたものなど、従来公知の様々な距離検出装置を採用可能である。
図9に示すように、音声信号処理回路4008は、マイクロコンピュータ56、A/Dコンバータ58、信号処理ブロック60、2つのD/Aコンバータ62H、62L、2つのアンプ64H、64Lを含んでいる。
マイクロコンピュータ56は、距離検出部54から供給される前記検出信号と、タイミング操作部4202から供給される制御信号との双方に基づいて遅延量制御信号を生成するものである。
A/Dコンバータ58は、切り換え回路4004から供給される左右のチャンネルの音声信号をアナログ信号からデジタル信号に変換するものである。
音質補正部6004は、A/Dコンバータ58から供給された音声信号を、中音域および低音域の帯域の音声信号と、高音域の音声信号とに分離するとともに、それら分離された音声信号の出力レベルをそれぞれ増減することで音質調整(周波数特性の調整)を行うものである。このような音質調整は、例えば、操作部42の音質調整用ボタンの操作に応じてなされる。
本実施の形態では、音質補正部6004は、高音域の音声信号を遅延調整部6002に供給し、中音域および低音域の帯域の音声信号を一方のD/Aコンバータ62Lに供給する。
遅延調整部6002は、マイクロコンピュータ56から供給される前記遅延量制御信号に基づいて決定される遅延時間分だけ、音質補正部6004から供給された高音域の音声信号のタイミングを遅延させた後、他方のD/Aコンバータ62Hに供給する。
遅延調整部6002は、例えば、RAM6002Aと、RAM6002Aに対するデータの読み書きを制御するコントローラ6002Bとを備えるものであり、コントローラ6002Bが高音域の音声信号をデータとしてRAM6002Bに書き込んだ後、RAM6002Aからデータを読み出すことによって、高音域の音声信号のタイミングを前記遅延時間分だけ遅延させている。
D/Aコンバータ62Lは、音質補正部6004から供給された中音域および低音域の帯域の音声信号(特許請求の範囲の第2の音声信号に相当)をデジタル信号からアナログ信号に変換して他方のアンプ64Lに供給する。
一方のアンプ64Hは、D/Aコンバータ62Hから供給された高音域の音声信号を増幅して第1のスピーカー50(50A、50B)に供給する。
他方のアンプ64Lは、D/Aコンバータ62Lから供給された中音域および低音域の音声信号を増幅して第2のスピーカー52(52A、52B)に供給する。
これにより、第1のスピーカー50から出力される音響のタイミングは、第2のスピーカー52から出力される音響のタイミングに対して、前記遅延時間だけ遅延することになる。
なお、本実施の形態では、音声信号処理回路4008によって第1のスピーカー50と第2のスピーカー52に音声信号を供給する信号供給部が構成されている。
また、音声信号処理回路4008によって、前記信号供給部から出力される高音域の音声信号(第1の音声信号)のタイミングと前記信号供給部から出力される中音域および低音域の帯域の音声信号(第2の音声信号)のタイミングとの時間差を調整する信号処理部が構成されている。
図10はテレビジョン装置10の第1、第2のスピーカー50、52から出力された音響とユーザーPとの関係を示す説明図である。
図10に示すように、ディスプレイ装置12を基台22よりもディスプレイ装置12の前方に大きく引き出した状態とする。
この場合、ディスプレイパネル1202の前方に位置するユーザーPの耳元から第1のスピーカー50までの距離L1に対し、ユーザーPの耳元から第2のスピーカー52までの距離L2は、(L2−L1)分だけ距離が遠くなる。
したがって、第1のスピーカー50から発せられた高音域の音響がユーザーPの耳元に先に到達し、第2のスピーカー52から発せられた中音域、低音域の音響が高音域の音響よりも遅れてユーザーPの耳元に到達することになる。
この場合、高音域の音響がユーザーPの耳元に到達する到達時間と、中音域、低音域の音響がユーザーPの耳元に到達する到達時間との時間差Δtは、音速をVsとすれば、Δt=(L2−L1)/Vsとなる。
このような時間差Δtの大きさによっては、ユーザーPが音響に違和感や不自然さを感じることが懸念される。
そこで、本実施の形態では、距離検出部54によって、第1、第2のスピーカー50、52の間の距離ΔLを(L2−L1)として検出し、その距離ΔLを伝達する際に必要な音響の伝達時間分だけ高音域の音響のタイミングを遅らせて第1のスピーカー50から出力させるようにしている。
すなわち、マイクロコンピュータ56によって時間差Δtがゼロとなるような遅延量制御信号を生成して遅延調整部6002に供給している。言い換えると、第1のスピーカー50から出力された音響と、第2のスピーカー52から出力された音響との双方がテレビジョン装置10の前方の位置(ユーザーPの耳元)に同一のタイミングで伝達されるように調整している。
これにより、時間差Δtによって生じる違和感や不自然さをユーザーPに感じさせることを防止でき、良好な音質の音響を提供する上で有利である。
なお、第1、第2のスピーカー50、52の間の距離ΔLと(L2−L1)とは厳密には一致しないが、実際の使用時におけるユーザーPとテレビジョン装置10との位置関係や距離を考慮すると、第1、第2のスピーカー50、52の間の距離ΔLと(L2−L1)との誤差が上述した音響のタイミングの調整に与える影響は無視できる。
このため、高音域の音響がうるさいと感じた場合には、高音域の音響が中音域、低音域の音響よりも遅いタイミングで聴こえるように音響を調整し、逆に、音響の明瞭感が不足していると感じた場合には、高音域の音響が中音域、低音域の音響よりも早いタイミングで聴こえるように音響を調整することが好ましい。
そこで、本実施の形態では、タイミング操作部4202の操作に応じた制御信号をマイクロコンピュータ56に供給しマイクロコンピュータ56によって遅延量制御信号を遅延調整部6002に供給することで、第2のスピーカー52から出力される中音域、低音域の音響に対する第1のスピーカー50から出力される高音域の音響のタイミングを早め、あるいは、遅らせて設定することで音響の明瞭度や柔らかさを自由に調整できるように構成しており、ユーザーPの好みに応じた音響を提供する上で有利である。
また、周波数帯域を複数の帯域、例えば、高音域と低音域に分割し、それぞれの帯域毎に音響の出力レベルを調整する場合に比較して、本実施の形態では、帯域毎の音響の出力レベルのバランスを何ら変化させないので、帯域毎の出力レベルのバランスを一定に保持しつつ、音響の明瞭度や柔らかさを自由に調整できるため、良好な音質の音響を提供する上で有利である。
そのため、いったん、タイミング操作部4202を操作することにより音響の明瞭度や柔らかさを好みの状態に調整した後で、ディスプレイ装置12の位置をディスプレイ装置12の前方あるいは後方に移動したとしても、距離検出部54によって距離ΔLの変化が検出され、その変化分に応じてマイクロコンピュータ56によって遅延量制御信号が調整されるため、音響の明瞭度や柔らかさの状態はディスプレイ装置12の移動前と同じ状態に維持される。したがって、ディスプレイ装置12の前後方向の位置を変化させても、タイミング操作部4202を再度調整せずに済み、操作が簡素化され使い勝手を高める上で有利である。
言い換えると、タイミング操作部4202によって時間差が設定されることによって、第1のスピーカー50から出力された音響と、第2のスピーカー52から出力された音響とがディスプレイ装置12の前方のユーザーに所定の時間差をもって伝達される状態において、距離検出部54によって第1のスピーカー50と第2のスピーカー52との間の距離ΔL=(L2−L1)の変化が検出された場合、音声信号処理回路4008(信号処理部)は、第1のスピーカー50から出力された音響と、第2のスピーカー52から出力された音響とがユーザーに前記所定の時間差をもって伝達される状態が維持されるように時間差を調整するように構成されている。
次に第2の実施の形態について説明する。
第2の実施の形態は、距離検出部として従来公知の角度センサを用いた点が第1の実施の形態と異なり、他の点は第1の実施の形態と同様である。
図11は角度センサ5410、5412で検出する角度θ1、θ2の説明図、図12は、角度θ1、θ2に基づいて第1、第2のスピーカー50、52の間の距離ΔLの算出を行なう際の説明図である。
なお、以下の実施の形態において、第1の実施の形態と同一または同様の箇所、部材には同一の符号を付して説明する。
図11に示すように、第2の実施の形態では、テレビジョン装置10に第1の角度センサ5410と第2の角度センサ5412が設けられている。
第1の角度センサ5410は支柱24とアーム26との連結箇所に配設され、アーム26が水平軸となす角度θ1を検出するように構成されている。
このとき、角度θ1は水平軸より上側にある場合にはプラスの値を持ち、水平軸より下側にある場合はマイナスの値を持つように設定されている。
第2の角度センサ5412はフレームと支持体30との連結箇所に配設され、支柱24が鉛直軸となす角度θ2を検出するように構成されている。
このとき、角度θ2は鉛直軸より左側にある場合にはプラスの値を持ち、鉛直軸より右側にある場合はマイナスの値を持つように設定されている。
各角度センサ5410、5412で検出された角度θ1、θ2は検出信号としてマイクロコンピュータ56(図9参照)に供給される。
そして、第1の座標P1(x1,y1)から第2の座標P2(x2,y2)までの距離をLA1とし、第2の座標P2(x2,y2)から原点P0(0,0)までの距離をLA2とする。
すると、第1の座標P1(x1,y1)は式(1)で示される。
したがって、原点から第1の座標P1(x1,y1)までの距離、すなわち、第1、第2のスピーカー50、52の間の距離ΔL=Lpanelは式(1)で求められた第1の座標P1(x1,y1)を用いて式(2)で示される。
したがって、本実施の形態では、第1の角度センサ5410と第2の角度センサ5412とマイクロコンピュータ56によって、特許請求の範囲の距離検出部が構成されている。
前記距離測距部以外の構成については第1の実施の形態と同様である。
また、実施の形態では、第1のスピーカー50が出力する音響の周波数域が第2のスピーカー52が出力する音響の周波数域よりも高い帯域を含む場合について説明したが、第1、第2のスピーカー50、52の周波数帯域が同じ帯域であっても、本発明は無論適用可能である。
すなわち、第1、第2のスピーカー50、52の周波数帯域が同じ帯域であっても、各スピーカーから出力される音響がユーザーPの耳元に到達するタイミングを合致させることによって良好な音質の音響を提供することができる。
また、第1、第2のスピーカー50、52の周波数帯域が同じ帯域であっても、各スピーカーから出力される音響がユーザーPの耳元に到達するタイミングの時間差を調整することによって音質の調整を行うことができることは無論である。
また、本実施の形態では、第1のスピーカー50がディスプレイ装置12に設けられ、第2のスピーカー52が基台22に設けられている場合について説明したが、第1、第2のスピーカー50,52は互いに切り離されて配置されていればよく、例えば、第1、第2のスピーカー50,52の一方あるいは双方がディスプレイ装置12や基台22から分離されて配置されていてもよい。
Claims (10)
- 薄板状のディスプレイ装置と、
被載置箇所に載置される載置部と、
前記載置部から上方に突出し前記載置部から離れた上方の箇所で前記ディスプレイ装置をその姿勢を変更可能に支持する支持機構と、
前記ディスプレイ装置に配置された第1のスピーカーと、
前記載置部に配置された第2のスピーカーと、
前記第1のスピーカーに第1の音声信号、前記第2のスピーカーに第2の音声信号をそれぞれ供給する信号供給部と、
前記第1の音声信号の供給タイミングを前記第2の音声信号の供給タイミングよりも遅延させることにより、前記第1および第2のスピーカーから出力される各音響が前記ディスプレイ装置の前方のユーザーへ伝達される際の時間差を調整する信号処理部と
を備えたテレビジョン装置。 - 前記第1のスピーカーと前記第2のスピーカーとの間の距離を検出する距離検出部を更に備え、
前記信号処理部は、前記距離検出部により検出された距離の音響伝達時間分、前記第1の音声信号の供給タイミングを前記第2の音声信号の供給タイミングよりも遅延させる
請求項1に記載のテレビジョン装置。 - 前記距離検出部は、
前記ディスプレイ装置の前記第1のスピーカーの近傍に設けられた赤外線送信部と、前記載置部の前記第2のスピーカーの近傍に設けられた赤外線受信部とを含み、
前記赤外線送信部から送信された赤外線信号を前記赤外線受信部によって受信することによって前記距離を検出する
請求項2に記載のテレビジョン装置。 - 前記距離検出部は、
前記支持機構に設けられた所定数の角度センサを含み、
前記角度センサが検出した角度に基づいて前記距離を検出する
請求項2に記載のテレビジョン装置。 - 前記信号処理部は、前記第1のスピーカーから出力された音響と、前記第2のスピーカーから出力された音響とが互いに同一のタイミングで前記ディスプレイ装置の前方のユーザーに伝達されるように、前記第1の音声信号の供給タイミングを前記第2の音声信号の供給タイミングよりも遅延させる
請求項2に記載のテレビジョン装置。 - 前記信号処理部によって調整される前記時間差を手動操作により設定するためのタイミング操作部を更に備えた
請求項1記載のテレビジョン装置。 - 前記第1のスピーカーが出力する音響の周波数域は前記第2のスピーカーが出力する音響の周波数域よりも高い帯域である
請求項1記載のテレビジョン装置。 - 前記第1のスピーカーが出力する音響の周波数域は前記第2のスピーカーが出力する音響の周波数域よりも高い帯域を含み、
前記信号処理部によって調整される前記時間差を手動操作により設定するタイミング操作部を設けた
請求項1記載のテレビジョン装置。 - 前記信号処理部によって調整される前記時間差を手動操作により設定するタイミング操作部と、
前記第1のスピーカーと前記第2のスピーカーとの間の距離を検出する距離検出部とを更に備え、
前記タイミング操作部によって前記時間差が設定されることによって、前記第1のスピーカーから出力された音響と、前記第2のスピーカーから出力された音響とが前記ディスプレイ装置の前方のユーザーに所定の時間差をもって伝達される状態において、
前記距離検出部によって前記第1のスピーカーと前記第2のスピーカーとの間の距離の変化が検出された場合、前記信号処理部は、前記第1のスピーカーから出力された音響と、前記第2のスピーカーから出力された音響とが前記ユーザーに前記所定の時間差をもって伝達される状態が維持されるように前記時間差を調整する
請求項1記載のテレビジョン装置。 - 前記信号処理部は、
前記第1の音声信号の供給タイミングを前記第2の音声信号の供給タイミングよりも遅延させるための遅延制御信号を生成する制御部と、
前記遅延制御信号に基づき、前記第1の音声信号の供給タイミングを前記第2の音声信号よりも遅延させることにより、前記時間差を調整する遅延調整部とを有する
請求項1に記載のテレビジョン装置。
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- 2007-02-26 EP EP07250790A patent/EP1833276A3/en not_active Withdrawn
- 2007-03-06 TW TW096107681A patent/TW200746814A/zh unknown
- 2007-03-07 KR KR1020070022453A patent/KR20070092157A/ko not_active Application Discontinuation
- 2007-03-08 CN CNB2007100858845A patent/CN100466704C/zh not_active Expired - Fee Related
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CN101035226A (zh) | 2007-09-12 |
CN100466704C (zh) | 2009-03-04 |
EP1833276A3 (en) | 2009-12-02 |
US8120713B2 (en) | 2012-02-21 |
TW200746814A (en) | 2007-12-16 |
JP2007243563A (ja) | 2007-09-20 |
EP1833276A2 (en) | 2007-09-12 |
KR20070092157A (ko) | 2007-09-12 |
US20070273790A1 (en) | 2007-11-29 |
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