JP5646215B2 - データ処理回路での2ティア・サンプリング補正のシステムおよび方法 - Google Patents
データ処理回路での2ティア・サンプリング補正のシステムおよび方法 Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
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Description
Claims (14)
- 少なくとも部分的に粗制御によって調節されるサンプリング位相でアナログ・データ入力をサンプリングするアナログ−ディジタル変換器であって、一連のディジタル・サンプルを提供する、アナログ−ディジタル変換器と、
少なくとも部分的に微細制御に基づいて前記一連のディジタル・サンプルのサブセットの間で補間するディジタル補間回路と、
位相誤差値を計算する位相誤差回路と、
少なくとも部分的に前記位相誤差値に基づいて前記粗制御および前記微細制御を判定するように動作可能である位相調整制御回路と
を含み、
前記ディジタル補間回路から導出されたディジタル・データ入力を受け取り、処理された出力を提供するデータ処理回路
をさらに含み、前記位相誤差回路が、前記ディジタル補間回路から導出された前記ディジタル・データ入力と前記処理された出力とを受け取り、前記位相誤差回路が、前記ディジタル補間回路から導出された前記ディジタル・データ入力と前記処理された出力との間の差に少なくとも部分的に基づいて、前記位相誤差値を計算することを特徴とする
データ処理回路。 - 前記位相調整制御回路が、粗同調誤差フィードバック回路および微細同調誤差フィードバック回路を含み、前記粗同調誤差フィードバック回路が、少なくとも部分的に前記位相誤差値に基づいて前記粗制御を生成し、前記微細同調誤差フィードバック回路が、粗同調フィードバック信号から提供される残差値に少なくとも部分的に基づいて前記微細制御を生成する、請求項1に記載の回路。
- 前記位相調整制御回路が、待ち時間調整回路を含み、前記待ち時間調整回路が、前記粗制御の適用と前記微細制御の適用との間の待ち時間差の影響を減らすように動作可能である、請求項2に記載の回路。
- 前記待ち時間調整回路が、低域フィルタおよび合計回路を含み、前記低域フィルタが、合計要素に前記微細制御の平均値を提供し、前記合計要素で、変更された誤差値を産出するために前記平均値が前記位相誤差値と合計され、前記粗同調フィードバック回路が、前記変更された誤差値に少なくとも部分的に基づいて前記粗制御を生成する、請求項3に記載の回路。
- 前記待ち時間調整回路が、遅延回路を含み、前記遅延回路が、ディジタル補間フィルタに提供される一連のデータ・サンプルに前記粗制御を伝搬する際のすべての遅延を一致させるために、前記ディジタル補間回路への前記微細制御の適用を遅延させる、請求項3に記載の回路。
- 前記ディジタル補間回路が、前記粗制御の変更によって引き起こされる前記一連のディジタル・サンプルのサブセットのうちの2つの間の不連続性を補償するように動作可能である、請求項1に記載の回路。
- 少なくとも部分的に粗制御によって調節されるサンプリング位相でアナログ・データ入力のアナログ−ディジタル変換を実行することであって、前記アナログ−ディジタル変換が、一連のディジタル・サンプルを産出する、アナログ−ディジタル変換を実行することと、
前記一連のディジタル・サンプルのディジタル補間を実行することであって、前記ディジタル補間が、少なくとも部分的に微細制御に基づいて前記一連のディジタル・サンプルのサブセットの間で補間し、前記ディジタル補間が、一連の補間された値を提供する、ディジタル補間を実行することと、
理想的な出力を産出するために、前記一連の補間された値の派生物に対してデータ検出を実行することと、
前記理想的な出力および前記一連の補間された値の前記派生物に少なくとも部分的に基づいて、位相誤差を計算することと、
少なくとも部分的に前記位相誤差に基づいて、前記粗制御を更新することと、
少なくとも部分的に前記位相誤差に基づいて、残差値を計算することと、
少なくとも部分的に前記残差値に基づいて、前記微細制御を更新することと
を含む、データ処理システムでのサンプル位相調整の方法。 - 前記データ検出が、ビタビ・アルゴリズム検出プロセスおよびMAP検出プロセスからなる群から選択される、請求項7に記載の方法。
- 前記粗制御を更新することが、前記位相誤差が粗ステップの半分より大きいときに前記粗制御を減分することを含む、請求項7に記載の方法。
- 前記残差値を計算することが、前記位相誤差から、前記粗ステップを乗算された前記粗制御から減分された値を減算することを含む、請求項9に記載の方法。
- 前記位相誤差が負であり、前記位相誤差の大きさが粗ステップの半分より大きいときに、前記粗制御を更新することが、前記粗制御を増分することを含む、請求項7に記載の方法。
- 前記粗制御に対して行うことのできる増分変更を制限すること
をさらに含む、請求項7に記載の方法。 - 少なくとも部分的に粗制御によって調節されるサンプリング位相でアナログ・データ入力をサンプリングするアナログ−ディジタル変換器であって、一連のディジタル・サンプルを提供する、アナログ−ディジタル変換器と、
少なくとも部分的に微細制御に基づいて前記一連のディジタル・サンプルのサブセットの間で補間するディジタル補間回路と、
前記ディジタル補間回路から導出されたディジタル・データ入力を受け取り、処理された出力を提供するデータ処理回路と、
前記処理された出力と前記ディジタル補間回路から導出された前記ディジタル・データ入力との間の差に少なくとも部分的に基づいて位相誤差値を計算する位相誤差回路と、
少なくとも部分的に前記位相誤差値に基づいて前記粗制御および前記微細制御を判定するように動作可能である位相調整制御回路と
を含むデータ処理システム。 - ハード・ディスク・ドライブに組み込まれ、前記アナログ・データ入力が、磁気記憶媒体から導出される、請求項13に記載のデータ処理システム。
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US12/510,222 | 2009-07-27 | ||
US12/510,222 US7969337B2 (en) | 2009-07-27 | 2009-07-27 | Systems and methods for two tier sampling correction in a data processing circuit |
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EP2282312B1 (en) | 2019-05-15 |
TWI471858B (zh) | 2015-02-01 |
KR20110011486A (ko) | 2011-02-08 |
US20110018748A1 (en) | 2011-01-27 |
JP2011030204A (ja) | 2011-02-10 |
TW201104677A (en) | 2011-02-01 |
CN101968968A (zh) | 2011-02-09 |
US7969337B2 (en) | 2011-06-28 |
CN101968968B (zh) | 2016-01-20 |
KR101584371B1 (ko) | 2016-01-13 |
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