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JP2004335079A5
JP2004335079A5 JP2004117386A JP2004117386A JP2004335079A5 JP 2004335079 A5 JP2004335079 A5 JP 2004335079A5 JP 2004117386 A JP2004117386 A JP 2004117386A JP 2004117386 A JP2004117386 A JP 2004117386A JP 2004335079 A5 JP2004335079 A5 JP 2004335079A5
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pattern
signal
information recording
recording
difference
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JP2004335079A (en
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情報記録媒体に記録を行う情報記録装置であって、
前記情報記録媒体から再生した再生信号からＰＲＭＬ信号処理方式を用いて２値化信号を生成する再生手段と、
前記２値化信号から前記ＰＲＭＬ方式における、同じ状態に合流するパスのパターンを検出する検出手段と、
前記２値化信号を正パターンとし、その正パターンから得られる理想信号と、この正パターンに対応する誤パターンと、その誤パターンから得られる理想信号と、を生成する生成手段と、
前記検出手段にて、前記２値化信号が所定のパターンと検出された場合に、前記正パターンの理想信号と前記再生信号の距離と、前記誤パターンの理想信号と再生信号の距離と、の差分を算出する差分算出手段と、
前記算出された差分から記録補償パラメータを求め、前記記録補償パラメータに基づいて、前記情報記録媒体に対する信号記録波形を補償する補償手段と、
を具備する、情報記録装置。 An information recording apparatus for recording on an information recording medium,
Reproduction means for generating a binarized signal from a reproduction signal reproduced from the information recording medium using a PRML signal processing method;
Detecting means for detecting a pattern of paths joining the same state in the PRML system from the binarized signal;
A generating means for generating a binarized signal as a positive pattern and generating an ideal signal obtained from the positive pattern, an erroneous pattern corresponding to the positive pattern, and an ideal signal obtained from the erroneous pattern;
When the detection unit detects the binarized signal as a predetermined pattern, a distance between the ideal signal of the positive pattern and the reproduction signal, and a distance between the ideal signal of the erroneous pattern and the reproduction signal, A difference calculating means for calculating a difference;
A compensation means for obtaining a recording compensation parameter from the calculated difference, and compensating a signal recording waveform for the information recording medium based on the recording compensation parameter;
An information recording apparatus comprising: 前記検出手段は、同じ状態に合流するパスのパターンとして、記録マークの端部に対応するパターンを検出する、請求項１に記載の情報記録装置。   The information recording apparatus according to claim 1, wherein the detection unit detects a pattern corresponding to an end portion of the recording mark as a pattern of paths that merge in the same state. 前記再生手段は、最小極性反転間隔が２である記録符号と等化方式ＰＲ（Ｃ０，Ｃ １，Ｃ １，Ｃ ０）とから定まる状態遷移則を用いて最尤復号を行う、請求項１に記載の情報記録装置。   2. The reproduction means performs maximum likelihood decoding using a state transition rule determined from a recording code having a minimum polarity inversion interval of 2 and an equalization method PR (C0, C1, C1, C0). The information recording device described in 1. 前記検出手段は、同じ状態に合流するパスのパターンとして、ユークリッド距離の２乗が１０であるパターンを検出する、請求項１又は３に記載の情報記録装置。   The information recording apparatus according to claim 1, wherein the detection unit detects a pattern in which a square of the Euclidean distance is 10 as a pattern of paths that merge in the same state. 前記差分算出手段は、記録マーク長とスペース長との組み合わせ毎に前記差分を算出する、請求項１に記載の情報記録装置。   The information recording apparatus according to claim 1, wherein the difference calculating unit calculates the difference for each combination of a recording mark length and a space length. 情報記録媒体に記録を行う情報記録方法であって、
前記情報記録媒体から再生した再生信号からＰＲＭＬ信号処理方式を用いて２値化信号を生成する再生ステップと、
前記２値化信号から前記ＰＲＭＬ方式における、同じ状態に合流するパスのパターンを検出する検出ステップと、
前記２値化信号を正パターンとし、その正パターンから得られる理想信号と、この正パターンに対応する誤パターンと、その誤パターンから得られる理想信号と、を生成する生成ステップと、
前記検出ステップにて、前記２値化信号が所定のパターンと検出された場合に、前記正パターンの理想信号と前記再生信号の距離と、前記誤パターンの理想信号と再生信号の距離と、の差分を算出する差分算出ステップと、
前記算出された差分から記録補償パラメータを求め、前記記録補償パラメータに基づいて、前記情報記録媒体に対する信号記録波形を補償する補償ステップと、
を含む、情報記録方法。 An information recording method for recording on an information recording medium,
A reproduction step of generating a binarized signal from a reproduction signal reproduced from the information recording medium using a PRML signal processing method;
A detection step of detecting a pattern of paths joining the same state in the PRML method from the binarized signal;
The binarized signal is a positive pattern, and a generation step for generating an ideal signal obtained from the positive pattern, an erroneous pattern corresponding to the positive pattern, and an ideal signal obtained from the erroneous pattern;
In the detection step, when the binarized signal is detected as a predetermined pattern, a distance between the ideal signal of the positive pattern and the reproduction signal, and a distance between the ideal signal of the erroneous pattern and the reproduction signal, A difference calculating step for calculating a difference;
A compensation step for obtaining a recording compensation parameter from the calculated difference, and compensating a signal recording waveform for the information recording medium based on the recording compensation parameter;
An information recording method. 前記検出ステップは、同じ状態に合流するパスのパターンとして、記録マークの端部に対応するパターンを検出する、請求項６に記載の情報記録方法。   The information recording method according to claim 6, wherein the detecting step detects a pattern corresponding to an end portion of the recording mark as a pattern of paths that merge in the same state. 前記再生ステップは、最小極性反転間隔が２である記録符号と等化方式ＰＲ（Ｃ０，Ｃ １，Ｃ １，Ｃ ０）とから定まる状態遷移則を用いて最尤復号を行う、請求項６に記載の情報記録方法。   7. The reproduction step performs maximum likelihood decoding using a state transition rule determined from a recording code having a minimum polarity inversion interval of 2 and an equalization method PR (C0, C1, C1, C0). Information recording method described in 1. 前記検出ステップは、同じ状態に合流するパスのパターンとして、ユークリッド距離の２乗が１０であるパターンを検出する、請求項６又は８に記載の情報記録方法。   The information recording method according to claim 6 or 8, wherein the detection step detects a pattern in which the square of the Euclidean distance is 10 as a pattern of paths that merge in the same state. 前記差分算出ステップは、記録マーク長とスペース長との組み合わせ毎に前記差分を算出する、請求項６に記載の情報記録方法。   The information recording method according to claim 6, wherein the difference calculating step calculates the difference for each combination of a recording mark length and a space length. 情報記録媒体に対する記録を制御する記録制御装置であって、
前記情報記録媒体から再生された再生信号から、ＰＲＭＬ信号処理方式を用いて生成された２値化信号から前記ＰＲＭＬ方式における、同じ状態に合流するパスのパターンを検出する検出手段と、
前記２値化信号を正パターンとし、その正パターンから得られる理想信号と、この正パターンに対応する誤パターンと、その誤パターンから得られる理想信号と、を生成する生成手段と、
前記検出手段にて、前記２値化信号が所定のパターンと検出された場合に、前記正パターンの理想信号と前記再生信号の距離と、前記誤パターンの理想信号と再生信号の距離と、の差分を算出する差分算出手段と、
前記算出された差分から記録補償パラメータを求め、前記記録補償パラメータに基づいて、前記情報記録媒体に対する信号記録波形を補償する補償手段と、
を具備する、記録制御装置。 A recording control device for controlling recording on an information recording medium,
Detecting means for detecting a pattern of paths joining in the same state in the PRML system from a binary signal generated using the PRML signal processing system from a playback signal reproduced from the information recording medium;
A generating means for generating a binarized signal as a positive pattern and generating an ideal signal obtained from the positive pattern, an erroneous pattern corresponding to the positive pattern, and an ideal signal obtained from the erroneous pattern;
When the detection unit detects the binarized signal as a predetermined pattern, a distance between the ideal signal of the positive pattern and the reproduction signal, and a distance between the ideal signal of the erroneous pattern and the reproduction signal, A difference calculating means for calculating a difference;
A compensation means for obtaining a recording compensation parameter from the calculated difference, and compensating a signal recording waveform for the information recording medium based on the recording compensation parameter;
A recording control apparatus comprising: 情報記録媒体に対する記録を制御する記録制御方法であって、
前記情報記録媒体から再生された再生信号から、ＰＲＭＬ信号処理方式を用いて生成された２値化信号から前記ＰＲＭＬ方式における、同じ状態に合流するパスのパターンを検出する検出ステップと、
前記２値化信号を正パターンとし、その正パターンから得られる理想信号と、この正パターンに対応する誤パターンと、その誤パターンから得られる理想信号と、を生成する生成ステップと、
前記検出ステップにて、前記２値化信号が所定のパターンと検出された場合に、前記正パターンの理想信号と前記再生信号の距離と、前記誤パターンの理想信号と再生信号の距離と、の差分を算出する差分算出ステップと、
前記算出された差分から記録補償パラメータを求め、前記記録補償パラメータに基づいて、前記情報記録媒体に対する信号記録波形を補償する補償ステップと、
を含む、記録制御方法。 A recording control method for controlling recording on an information recording medium,
A detection step of detecting a pattern of paths joining in the same state in the PRML system from a binary signal generated using the PRML signal processing system from a playback signal reproduced from the information recording medium;
The binarized signal is a positive pattern, and a generation step for generating an ideal signal obtained from the positive pattern, an erroneous pattern corresponding to the positive pattern, and an ideal signal obtained from the erroneous pattern;
In the detection step, when the binarized signal is detected as a predetermined pattern, a distance between the ideal signal of the positive pattern and the reproduction signal, and a distance between the ideal signal of the erroneous pattern and the reproduction signal, A difference calculating step for calculating a difference;
A compensation step for obtaining a recording compensation parameter from the calculated difference, and compensating a signal recording waveform for the information recording medium based on the recording compensation parameter;
Including a recording control method. 情報記録媒体に対する記録を制御する記録制御プログラムであって、
前記情報記録媒体から再生された再生信号から、ＰＲＭＬ信号処理方式を用いて生成された２値化信号から前記ＰＲＭＬ方式における、同じ状態に合流するパスのパターンを検出する検出ステップと、
前記２値化信号を正パターンとし、その正パターンから得られる理想信号と、この正パターンに対応する誤パターンと、その誤パターンから得られる理想信号と、を生成する生成ステップと、
前記検出ステップにて、前記２値化信号が所定のパターンと検出された場合に、前記正パターンの理想信号と前記再生信号の距離と、前記誤パターンの理想信号と再生信号の距離と、の差分を算出する差分算出ステップと、
前記算出された差分から記録補償パラメータを求め、前記記録補償パラメータに基づいて、前記情報記録媒体に対する信号記録波形を補償する補償ステップと、
を含む、記録制御プログラム。 A recording control program for controlling recording on an information recording medium,
A detection step of detecting a pattern of paths joining in the same state in the PRML system from a binary signal generated using the PRML signal processing system from a playback signal reproduced from the information recording medium;
The binarized signal is a positive pattern, and a generation step for generating an ideal signal obtained from the positive pattern, an erroneous pattern corresponding to the positive pattern, and an ideal signal obtained from the erroneous pattern;
In the detection step, when the binarized signal is detected as a predetermined pattern, a distance between the ideal signal of the positive pattern and the reproduction signal, and a distance between the ideal signal of the erroneous pattern and the reproduction signal, A difference calculating step for calculating a difference;
A compensation step for obtaining a recording compensation parameter from the calculated difference, and compensating a signal recording waveform for the information recording medium based on the recording compensation parameter;
Including a recording control program.
JP2004117386A 2003-04-14 2004-04-12 Recording control device, recording / reproducing device, and recording control method Withdrawn JP2004335079A (en)

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