JP2006148543A - デジタル受信機 - Google Patents
デジタル受信機 Download PDFInfo
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- JP2006148543A JP2006148543A JP2004335937A JP2004335937A JP2006148543A JP 2006148543 A JP2006148543 A JP 2006148543A JP 2004335937 A JP2004335937 A JP 2004335937A JP 2004335937 A JP2004335937 A JP 2004335937A JP 2006148543 A JP2006148543 A JP 2006148543A
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Abstract
【解決手段】 異なる移動速度の情報に関連付けて、地上デジタル放送の伝送路符号化方式における劣化耐性に関する伝送パラメータ群の各伝送パラメータについて、移動速度の影響で変化する劣化耐性に優れた順番を示す優先順位情報が記憶されている記憶部9を備え、選択制御部8が、速度情報検出部10で検出される移動速度と、復調部4が復調時に再生する番組の伝送パラメータとを引数として記憶部9を検索し、検索した伝送パラメータのうちで優先順位情報により最も劣化耐性に優れた順番が示されている伝送パラメータと同じ伝送パラメータによって伝送路符号化がなされている番組を選択し、デコーダ部6に、その番組を構成しているエレメンタリストリームESやパケッタイズドエレメンタリストリームPESをデコードさせることにより、自動的にドップラーシフトやフェージングの影響を受け難い番組を受信するようにする。
【選択図】 図2
Description
8…選択制御部
9…記憶部
10…速度情報検出部
11…動き解析部
Claims (7)
- 地上デジタル放送を受信するデジタル受信機であって、
受信する放送に含まれる番組を再生する受信再生手段と、
受信中の放送に含まれている番組のうち、速度情報検出手段で検出される移動速度に基づいて、移動速度の影響で変化する劣化耐性に優れた伝送パラメータで伝送路符号化がなされている番組を選択し、該選択した番組を有効番組として前記受信再生手段に再生させる選択制御手段と、
を具備することを特徴とするデジタル受信機。 - 異なる移動速度の情報に関連付けて、地上デジタル放送の伝送路符号化方式における劣化耐性に関する伝送パラメータ群の各伝送パラメータについて、移動速度の影響で変化する劣化耐性に優れた順番を示す優先順位情報が記憶されている記憶手段を備え、
前記選択制御手段は、前記速度情報検出手段で検出される移動速度と、前記受信中の放送に含まれている番組の伝送路符号化時の伝送パラメータとを引数として前記記憶手段を検索し、検索した各伝送パラメータのうちで前記優先順位情報により最も劣化耐性に優れた順番が示されている伝送パラメータと同じ伝送パラメータによって伝送路符号化がなされている番組を前記有効番組として選択して、前記受信再生手段に再生させることを特徴とする請求項1に記載のデジタル受信機。 - 前記選択制御手段は、前記受信再生手段が前記受信する放送に含まれる番組を再生する際に生成する伝送多重制御信号に含まれている伝送パラメータを前記引数とすることを特徴とする請求項1又は2に記載のデジタル受信機。
- 前記速度情報検出手段の出力を所定の規定時間毎に検出し、該検出結果を前記移動速度として前記選択制御手段に供給する動き解析手段を有することを特徴とする請求項1〜3の何れか1項に記載のデジタル受信機。
- 前記選択制御手段は、前記受信再生手段が前記受信する放送に含まれる番組を再生する際に生成するエラー情報に基づいて、前記選択した有効番組が良好な受信状態の得られる真の有効番組か否か更に判断し、真の有効番組と判断すると、前記受信再生手段に再生させることを特徴とする請求項1〜4の何れか1項に記載のデジタル受信機。
- 前記エラー情報は、ビットエラーレート、パケットエラーレート、受信感度信号の少なくとも何れか1つであることを特徴とする請求項5に記載のデジタル受信機。
- 前記伝送パラメータは、キャリア変調方式と符号化率であることを特徴とする請求項1〜6の何れか1項に記載のデジタル受信機。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004335937A JP4417820B2 (ja) | 2004-11-19 | 2004-11-19 | デジタル受信機 |
Applications Claiming Priority (1)
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JP2004335937A JP4417820B2 (ja) | 2004-11-19 | 2004-11-19 | デジタル受信機 |
Publications (2)
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JP2006148543A true JP2006148543A (ja) | 2006-06-08 |
JP4417820B2 JP4417820B2 (ja) | 2010-02-17 |
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JP2004335937A Expired - Fee Related JP4417820B2 (ja) | 2004-11-19 | 2004-11-19 | デジタル受信機 |
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JP (1) | JP4417820B2 (ja) |
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