JP2006221781A5 - - Google Patents
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- JP2006221781A5 JP2006221781A5 JP2005194493A JP2005194493A JP2006221781A5 JP 2006221781 A5 JP2006221781 A5 JP 2006221781A5 JP 2005194493 A JP2005194493 A JP 2005194493A JP 2005194493 A JP2005194493 A JP 2005194493A JP 2006221781 A5 JP2006221781 A5 JP 2006221781A5
- Authority
- JP
- Japan
- Prior art keywords
- recording
- pattern
- test writing
- power
- recording power
- 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.)
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Claims (7)
記録符号列中のマーク長を、検出窓幅の自然数n倍長のマークに対して、nを2以上の整数定数で除算した剰余にしたがって分類される記録パターンを生成し、 Generating a recording pattern classified according to a remainder obtained by dividing n by an integer constant of 2 or more for a mark length in the recording code string, which is a natural number n times longer than the detection window width,
前記記録パターンのうち任意の記録パターンAを選択し、所定の方法により前記記録パターンAの記録パワーPw(A)を設定し、前記記録パターンAを前記記録パワーPw(A)で、かつ、その他の記録パターンの記録パワーを、Pw(A)を含めた一定の範囲で変化させ試し書きを行って、その他の記録パターンの記録パワーを設定することを特徴とする試し書き方法。 An arbitrary recording pattern A is selected from the recording patterns, a recording power Pw (A) of the recording pattern A is set by a predetermined method, the recording pattern A is set to the recording power Pw (A), and the others The test writing method is characterized in that the recording power of the other recording pattern is set by changing the recording power of the recording pattern in a certain range including Pw (A) and performing the test writing.
前記その他の記録パターンの、前記記録パワーPw(A)を適用したときの変調度を算出し、 Calculating the degree of modulation when the recording power Pw (A) of the other recording pattern is applied;
前記Pw(A)における変調度と、前記その他の記録パターンの変調度とを比較し、 Comparing the modulation degree in the Pw (A) with the modulation degree of the other recording pattern;
前記比較結果に応じて、記録パワーの変化させる範囲を異ならせて試し書きを行うことを特徴とする請求項1記載の試し書き方法。 2. The test writing method according to claim 1, wherein the test writing is performed by changing a range in which the recording power is changed in accordance with the comparison result.
記録符号列中のマーク長を、検出窓幅の自然数n倍長のマークに対して、nを2以上の整数定数で除算した剰余にしたがって分類される記録パターンを生成し、 Generating a recording pattern classified according to a remainder obtained by dividing n by an integer constant of 2 or more for a mark length in the recording code string, which is a natural number n times longer than the detection window width,
前記記録パターンのうち任意の記録パターンAを用いて試し書きを行って、記録パワーを求め、その記録パワーに定数qを乗じるあるいは定数rを加えて他方の記録パターンの記録パワーを求めることを特徴とする試し書き方法。 Test writing is performed by using an arbitrary recording pattern A of the recording patterns to obtain recording power, and the recording power of the other recording pattern is obtained by multiplying the recording power by a constant q or adding a constant r. Trial writing method.
記録された前記試し書きパターンを検出する検出回路と、 A detection circuit for detecting the recorded test writing pattern;
記録された前記試し書きパターンを再生する再生回路と、 A reproduction circuit for reproducing the recorded test writing pattern;
前記試し書きパターンの再生特性を判定する判定回路と、 A determination circuit for determining reproduction characteristics of the test writing pattern;
前記判定回路にて記録不可能と判定された場合にライトエラーを表示するための回路と、 A circuit for displaying a write error when it is determined by the determination circuit that recording is impossible;
前記判定回路にて記録可能と判定された場合、前記検出回路からの信号に基づいて、記録パワーを調整する記録パワー調整回路を有し、 When it is determined that recording is possible in the determination circuit, a recording power adjustment circuit that adjusts recording power based on a signal from the detection circuit,
前記試し書きパターン記録手段は、記録符号列中のマーク長を、検出窓幅の自然数n倍長のマークに対して、nを2以上の整数定数で除算した剰余にしたがって分類される記録パターンを、記録する手段であり、 The test writing pattern recording means records a recording pattern classified according to a remainder obtained by dividing n by an integer constant of 2 or more for a mark length in a recording code string, which is a natural number n times longer than a detection window width. Is a means of recording,
前記記録パワー調整回路は、前記分類される記録パターン毎に記録パワーを設定するものであることを特徴とする情報記録装置。 The information recording apparatus, wherein the recording power adjustment circuit sets a recording power for each of the classified recording patterns.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005194493A JP4301215B2 (en) | 2005-07-04 | 2005-07-04 | Test writing method and information recording apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005194493A JP4301215B2 (en) | 2005-07-04 | 2005-07-04 | Test writing method and information recording apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005033771A Division JP4225282B2 (en) | 2005-02-10 | 2005-02-10 | Test writing method and information recording apparatus |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009054373A Division JP4692657B2 (en) | 2009-03-09 | 2009-03-09 | Test writing method and information recording apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006221781A JP2006221781A (en) | 2006-08-24 |
JP2006221781A5 true JP2006221781A5 (en) | 2007-07-12 |
JP4301215B2 JP4301215B2 (en) | 2009-07-22 |
Family
ID=36983978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005194493A Expired - Fee Related JP4301215B2 (en) | 2005-07-04 | 2005-07-04 | Test writing method and information recording apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4301215B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007334921A (en) | 2006-06-12 | 2007-12-27 | Hitachi Ltd | Recording method, laser driving device, and optical disk device using them |
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2005
- 2005-07-04 JP JP2005194493A patent/JP4301215B2/en not_active Expired - Fee Related
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