JP2006099928A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2006099928A5 JP2006099928A5 JP2005135670A JP2005135670A JP2006099928A5 JP 2006099928 A5 JP2006099928 A5 JP 2006099928A5 JP 2005135670 A JP2005135670 A JP 2005135670A JP 2005135670 A JP2005135670 A JP 2005135670A JP 2006099928 A5 JP2006099928 A5 JP 2006099928A5
- Authority
- JP
- Japan
- Prior art keywords
- value
- aberration correction
- spherical aberration
- evaluation signal
- focus bias
- 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.)
- Granted
Links
Claims (19)
上記ヘッド手段で得られる反射光に基づき、再生信号品質の指標となる第１評価信号を生成する第１評価信号生成手段と、
上記ヘッド手段で得られる反射光に基づく信号として生成されるフォーカスエラー信号に基づいて上記フォーカスサーボ機構を駆動してフォーカスサーボを実行するフォーカスサーボ手段と、
上記ヘッド手段で得られる反射光に基づく信号として生成されるトラッキングエラー信号に基づいて上記トラッキングサーボ機構を駆動してトラッキングサーボを実行するトラッキングサーボ手段と、
球面収差補正値に基づいて上記球面収差補正機構を駆動して球面収差補正を実行する球面収差補正手段と、
上記フォーカスサーボ手段を含むフォーカスループにフォーカスバイアスを加算するフォーカスバイアス手段と、を備えると共に、
少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながら上記第１評価信号生成手段により得られる第１評価信号の値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とを割り出す割出処理と、
少なくとも上記割出処理により割り出した上記フォーカスバイアス値について、その値を所要の第１差分値分ずらした値を上記フォーカスバイアス手段に設定するように制御を行う設定制御処理と、
を実行するように構成された制御手段を備える
光ディスク装置。 It performs laser irradiation and reflected light detection with respect to the optical disc recording medium, and a head unit having a focus servo mechanism of the laser beam, a tracking servo mechanism, and the spherical aberration correction mechanism,
First evaluation signal generating means for generating a first evaluation signal that serves as an index of reproduction signal quality based on the reflected light obtained by the head means;
Focus servo means for driving the focus servo mechanism based on a focus error signal generated as a signal based on reflected light obtained by the head means to execute focus servo;
Tracking servo means for driving the tracking servo mechanism and executing tracking servo based on a tracking error signal generated as a signal based on reflected light obtained by the head means;
Spherical aberration correction means for performing spherical aberration correction by driving the spherical aberration correction mechanism based on the spherical aberration correction value;
A focus bias means for adding a focus bias to a focus loop including the focus servo means, and
The first evaluation is performed while changing both the focus bias value set in the focus bias means and the spherical aberration correction value set in the spherical aberration correction means at least with the tracking servo by the tracking servo means turned on. An indexing process for determining a focus bias value and a spherical aberration correction value at which the value of the first evaluation signal is the best based on the result of detecting the value of the first evaluation signal obtained by the signal generating means;
A setting control process for performing control so as to set a value obtained by shifting the value by a required first difference value in the focus bias unit, at least for the focus bias value determined by the index process;
Ru with a configured controlled unit to execute
An optical disk device.
予め、最適とされるフォーカスバイアスの値と上記第１評価信号の値を最良とするフォーカスバイアスの値との差に基づいて設定された固定の値である請求項１に記載の光ディスク装置。 The first difference value is
Previously, the optical disk apparatus according to 請 Motomeko 1 Ru value der fixed set based on the difference between the value of the focus bias to optimize the value of the focus bias value and the first evaluation signal which is the best .
上記制御手段は、
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、上記第２評価信号生成手段により得られる第２評価信号と上記第１評価信号生成手段により得られる第１評価信号とのそれぞれについて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながらその値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値と、上記第２評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とのそれぞれを割り出す装填時割出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最大となったフォーカスバイアスの値と、上記第１評価信号の値が最良となったフォーカスバイアスの値との差の値を上記第１差分値として算出する第１差分値算出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となったフォーカスバイアスの値と上記球面収差補正値とを、それぞれ上記フォーカスバイアス手段と上記球面収差補正手段とに設定するように制御を行う装填時設定制御処理と、をさらに実行するようにされると共に、
上記設定制御処理では、
上記割出処理により割り出した上記フォーカスバイアス値を、上記第１差分値算出処理により算出された上記第１差分値分ずらして上記フォーカスバイアス手段に設定するようにされる
請求項１に記載の光ディスク装置。 And a second evaluation signal generating means for generating a second evaluation signal that is an index of reproduction signal quality different from the first evaluation signal based on the reflected light obtained by the head means.
The control means includes
At least the second evaluation signal obtained by the second evaluation signal generation means and the first evaluation signal obtained by the first evaluation signal generation means at least according to the timing at which the optical disc recording medium is loaded. The result of detecting the value while changing both the focus bias value set in the focus bias means and the spherical aberration correction value set in the spherical aberration correction means with the tracking servo by the tracking servo means turned on. Based on the above, the focus bias value and the spherical aberration correction value at which the value of the first evaluation signal is the best, and the focus bias value and the spherical aberration correction value at which the value of the second evaluation signal is the best are calculated. Indexing process during loading,
The value of the difference between the focus bias value at which the value of the second evaluation signal determined by the loading indexing process is maximum and the focus bias value at which the value of the first evaluation signal is optimal A first difference value calculation process for calculating the difference value as the first difference value;
The focus bias value and the spherical aberration correction value at which the value of the second evaluation signal determined by the loading index process is the best are set in the focus bias unit and the spherical aberration correction unit, respectively. And a loading setting control process for performing control so as to
In the above setting control process,
The focus bias value indexing by the indexing process, Ru are as shifted above the first difference value fraction calculated by the first difference value calculation process is set to the focus bias means
The optical disk apparatus according to 請 Motomeko 1.
上記第１評価信号生成手段は、上記第１評価信号としてプッシュプル信号を生成すると共に、
上記制御手段による上記割出処理では、
上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値として、上記プッシュプル信号の振幅値が最大となったフォーカスバイアスの値と球面収差補正値とを割り出すようにされる
請求項１に記載の光ディスク装置。 The optical disc recording medium is a recordable disc in which a recording track is wobbled,
The first evaluation signal generation means generates a push-pull signal as the first evaluation signal,
In the indexing process by the control means,
As the focus bias value and spherical aberration correction value the value of the first evaluation signal becomes the best, the amplitude value of the push-pull device signals is being adapted determine the value and spherical aberration correction value of the focus bias the largest
The optical disk apparatus according to 請 Motomeko 1.
上記第１評価信号生成手段は、上記第１評価信号としてプッシュプル信号を生成し、
上記第２評価信号生成手段は、上記第２評価信号としてＲＦ信号を生成すると共に、
上記制御手段による上記装填時割出処理では、
上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値と、上記第２評価信号の値が最良となったフォーカスバイアス値と球面収差補正値として、それぞれ上記プッシュプル信号の振幅値が最大となったフォーカスバイアスの値と球面収差補正値と、上記ＲＦ信号の振幅値が最大となったフォーカスバイアスの値と球面収差補正値とを割り出すようにされる
請求項３に記載の光ディスク装置。 The optical disc recording medium is a recordable disc in which a recording track is wobbled,
The first evaluation signal generation means generates a push-pull signal as the first evaluation signal,
The second evaluation signal generating means generates an RF signal as the second evaluation signal,
In the loading indexing process by the control means,
As the focus bias value and the spherical aberration correction value at which the value of the first evaluation signal is the best, and the focus bias value and the spherical aberration correction value at which the value of the second evaluation signal is the best, respectively, value and spherical aberration correction value of the focus bias amplitude value becomes maximum, the amplitude value of the RF device signals is being adapted determine the value and spherical aberration correction value of the focus bias the largest
The optical disk apparatus according to 請 Motomeko 3.
上記プッシュプル信号の振幅値の検出を、記録及び／又は再生の最小単位の領域内において行うようにされる
請求項４または請求項５に記載の光ディスク装置。 In the indexing process and the loading indexing process,
The detection of the amplitude value of the push-pull signal, Ru been performed in the region of the recording and / or reproducing minimum unit of
The optical disk apparatus according to 請 Motomeko 4 or claim 5.
上記第１評価信号生成手段は、上記第１評価信号としてＲＦ信号を生成し、
上記第２評価信号生成手段は、上記第２評価信号として差メトリックの標準偏差による評価信号を生成するようにされ、
上記装填時割出処理では、
上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値と、上記第２評価信号の値が最良となったフォーカスバイアス値と球面収差補正値として、それぞれ上記ＲＦ信号の振幅値が最大となったフォーカスバイアスの値と球面収差補正値と、上記差メトリックの標準偏差の値が最小となったフォーカスバイアスの値と球面収差補正値とを割り出すようにされる
請求項３に記載の光ディスク装置。 The optical disc recording medium is a read-only disc in which the recording track is not wobbled,
The first evaluation signal generating means generates an RF signal as the first evaluation signal,
The second evaluation signal generation means generates an evaluation signal based on a standard deviation of a difference metric as the second evaluation signal,
In the above loading indexing process,
As the focus bias value and the spherical aberration correction value at which the value of the first evaluation signal is the best, and the focus bias value and the spherical aberration correction value at which the value of the second evaluation signal is the best, the amplitude of the RF signal, respectively. value and spherical aberration correction value of the focus bias value is maximized, Ru is to determine the value of the focus bias and spherical aberration correction value the value of the standard deviation is minimized in the difference metric
The optical disk apparatus according to 請 Motomeko 3.
上記割出処理により割り出したフォーカスバイアス値についてその値を所要の第１差分値分ずらした値を上記フォーカスバイアス手段に設定するように制御を行うと共に、上記割出処理により割り出した上記球面収差補正値についても、その値を所要の第２差分値分ずらした値を上記球面収差補正手段に対して設定するように制御を行う
請求項１に記載の光ディスク装置。 The control means as the setting control process,
The focus bias value determined by the indexing process is controlled to set a value obtained by shifting the value by a required first difference value in the focus bias means, and the spherical aberration correction determined by the indexing process is performed. for the values, intends row control to set the value of the value of the shifted required second difference value content with respect to the spherical aberration correction means
The optical disk apparatus according to 請 Motomeko 1.
予め、最適とされる球面収差補正値と上記第１評価信号の値を最良とする球面収差補正値との差に基づいて設定された固定の値である請求項８に記載の光ディスク装置。 The second difference value is
Previously, the optical disk apparatus according to 請 Motomeko 8 Ru value der fixed set based on the difference between the spherical aberration correction value and the best value of the spherical aberration correction value and the first evaluation signal which is the best .
上記制御手段は、
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、上記第２評価信号生成手段により得られる第２評価信号と上記第１評価信号生成手段により得られる第１評価信号とのそれぞれについて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながらその値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値と、上記第２評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とのそれぞれを割り出す装填時割出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となった球面収差補正値と、上記第１評価信号の値が最良となった球面収差補正値との差の値を上記第２差分値として算出する第２差分値算出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となったフォーカスバイアスの値と上記球面収差補正値とを、それぞれ上記フォーカスバイアス手段と上記球面収差補正手段とに設定するように制御を行う装填時設定制御処理と、をさらに実行するようにされると共に、
上記設定制御処理では、
上記割出処理により割り出した上記球面収差補正値を、上記第２差分値算出処理により算出された上記第２差分値分ずらして上記球面収差補正手段に設定するようにされる
請求項８に記載の光ディスク装置。 And a second evaluation signal generating means for generating a second evaluation signal that is an index of reproduction signal quality different from the first evaluation signal based on the reflected light obtained by the head means.
The control means includes
At least the second evaluation signal obtained by the second evaluation signal generation means and the first evaluation signal obtained by the first evaluation signal generation means at least according to the timing at which the optical disc recording medium is loaded. The result of detecting the value while changing both the focus bias value set in the focus bias means and the spherical aberration correction value set in the spherical aberration correction means with the tracking servo by the tracking servo means turned on. Based on the above, the focus bias value and the spherical aberration correction value at which the value of the first evaluation signal is the best, and the focus bias value and the spherical aberration correction value at which the value of the second evaluation signal is the best are calculated. Indexing process during loading,
A value of a difference between the spherical aberration correction value with the best value of the second evaluation signal calculated by the loading indexing process and the spherical aberration correction value with the best value of the first evaluation signal Second difference value calculation processing for calculating as the second difference value,
The focus bias value and the spherical aberration correction value at which the value of the second evaluation signal determined by the loading index process is the best are set in the focus bias unit and the spherical aberration correction unit, respectively. And a loading setting control process for performing control so as to
In the above setting control process,
The spherical aberration correction value indexing by the indexing process, Ru are as shifted above the second difference value fraction calculated by the second difference value calculation process is set to the spherical aberration correction means
The optical disk apparatus according to 請 Motomeko 8.
上記割出手順より割り出した上記フォーカスバイアス値と上記球面収差補正値とに応じてフォーカスバイアスと球面収差補正値とを設定する上で、少なくとも上記割出手順より割り出した上記フォーカスバイアス値については、その値を所要の第１差分値分ずらした値を設定するように制御する設定制御手順と
を備えたフォーカスバイアス及び球面収差補正値調整方法。 A first evaluation signal is generated based on the reflected light of the irradiated laser beam to an optical disc recording medium is indicative of the reproduction signal quality, the focus bias value and spherical aberration correction value in a state where the on at least a tracking servo An indexing procedure for determining a focus bias value and a spherical aberration correction value at which the value of the first evaluation signal is the best based on a result of detecting the value of the first evaluation signal while changing both;
In setting the focus bias and the spherical aberration correction value according to the focus bias value and the spherical aberration correction value determined from the index procedure, at least the focus bias value calculated from the index procedure, off Okasubaiasu and spherical aberration correction value adjusting method and a setting control step of controlling so as to set the value of the required first difference value shifted by value.
上記ヘッド手段で得られる反射光に基づき、再生信号品質の指標となる第１評価信号を生成する第１評価信号生成手段と、
上記ヘッド手段で得られる反射光に基づく信号として生成されるフォーカスエラー信号に基づいて上記フォーカスサーボ機構を駆動してフォーカスサーボを実行するフォーカスサーボ手段と、
上記ヘッド手段で得られる反射光に基づく信号として生成されるトラッキングエラー信号に基づいて上記トラッキングサーボ機構を駆動してトラッキングサーボを実行するトラッキングサーボ手段と、
球面収差補正値に基づいて上記球面収差補正機構を駆動して球面収差補正を実行する球面収差補正手段と、
上記フォーカスサーボ手段を含むフォーカスループにフォーカスバイアスを加算するフォーカスバイアス手段と、を備えると共に、
少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されているフォーカスバイアス値のレベル又はそのレベルを所要の第１差分値分ずらしたレベルを中心として同レベルで増減するフォーカスバイアスが加算されるように制御を行うと同時に、この同レベルで増減するフォーカスバイアスの加算に応じて上記第１評価信号生成手段で得られた第１評価信号の値を測定する第１測定処理と、
上記第１測定処理により測定した、上記フォーカスバイアスの増加側での上記第１評価信号の値と上記フォーカスバイアスの減少側での上記第１評価信号の値との差を求め、その値が正／負何れであるかについて判別する第１判別処理と、
上記第１判別処理の判別結果に基づき、上記フォーカスバイアス手段において設定されているフォーカスバイアスの値に対して所定のステップ値を加算／減算したフォーカスバイアス値が上記フォーカスバイアス手段に対して設定されるように制御を行う設定制御処理と、
を実行するように構成された制御手段を備える
光ディスク装置。 It performs laser irradiation and reflected light detection with respect to the optical disc recording medium, and a head unit having a focus servo mechanism of the laser beam, a tracking servo mechanism, and the spherical aberration correction mechanism,
First evaluation signal generating means for generating a first evaluation signal that serves as an index of reproduction signal quality based on the reflected light obtained by the head means;
Focus servo means for driving the focus servo mechanism based on a focus error signal generated as a signal based on reflected light obtained by the head means to execute focus servo;
Tracking servo means for driving the tracking servo mechanism and executing tracking servo based on a tracking error signal generated as a signal based on reflected light obtained by the head means;
Spherical aberration correction means for performing spherical aberration correction by driving the spherical aberration correction mechanism based on the spherical aberration correction value;
A focus bias means for adding a focus bias to a focus loop including the focus servo means, and
At least with the tracking servo by the tracking servo means turned on, the focus bias value level set in the focus bias means or a level obtained by shifting the level by the required first difference value is increased or decreased at the same level. First, the first evaluation signal value obtained by the first evaluation signal generating means is measured in accordance with the addition of the focus bias that increases or decreases at the same level. Measurement process,
A difference between the value of the first evaluation signal on the increase side of the focus bias and the value of the first evaluation signal on the decrease side of the focus bias measured by the first measurement process is obtained, and the value is positive. First discrimination processing for discriminating between negative and negative,
Based on the determination result of the first determination process, a focus bias value obtained by adding / subtracting a predetermined step value to / from a focus bias value set in the focus bias unit is set for the focus bias unit. Setting control processing to control
Ru with a configured controlled unit to execute
An optical disk device.
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながら上記第１評価信号生成手段により得られる第１評価信号の値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とを割り出す装填時割出処理と、
上記装填時割出処理により割り出した少なくともフォーカスバイアス値について、その値を上記第１差分値分ずらした値を上記フォーカスバイアス手段に設定するように制御を行う装填時設定制御処理と、を実行するようにされ、
上記第１測定処理では、
上記フォーカスバイアス手段に設定されているフォーカスバイアスの値を上記第１差分値分ずらしたレベルを中心として同レベルで増減するフォーカスバイアスを加算するように制御を行って上記第１評価信号の値を測定するようにされる
請求項１２に記載の光ディスク装置。 Further, the control means includes
The focus bias value set in the focus bias means and the spherical aberration correction means are set at least in a state where the tracking servo by the tracking servo means is turned on at least according to the timing when the optical disc recording medium is loaded. Based on the result of detecting the value of the first evaluation signal obtained by the first evaluation signal generation means while changing both the spherical aberration correction values, the focus bias value and the spherical surface where the value of the first evaluation signal is the best A loading indexing process for determining an aberration correction value;
And a loading setting control process for performing control so that a value obtained by shifting the value by the first difference value is set in the focus bias means for at least the focus bias value determined by the loading indexing process. Was
In the first measurement process,
Control is performed so as to add a focus bias that increases or decreases at the same level around a level obtained by shifting the focus bias value set in the focus bias means by the first difference value, and the value of the first evaluation signal is set. Ru is to measure
The optical disk apparatus according to 請 Motomeko 12.
上記制御手段は、
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、上記第２評価信号生成手段により得られる第２評価信号と上記第１評価信号生成手段により得られる第１評価信号とのそれぞれについて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながらその値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値と、上記第２評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とのそれぞれを割り出す装填時割出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となったフォーカスバイアスの値と、上記第１評価信号の値が最良となったフォーカスバイアスの値との差の値を上記第１差分値として算出する第１差分値算出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となったフォーカスバイアスの値と上記球面収差補正値とを、それぞれ上記フォーカスバイアス手段と上記球面収差補正手段とに設定するように制御を行う装填時設定制御処理と、をさらに実行するようにされると共に、
上記第１測定処理では、
上記フォーカスバイアス手段に設定されているフォーカスバイアスの値を上記第１差分値分ずらしたレベルを中心として同レベルで増減するフォーカスバイアスを加算するように制御を行って上記第１評価信号の値を測定するようにされる
請求項１２に記載の光ディスク装置。 And a second evaluation signal generating means for generating a second evaluation signal that is an index of reproduction signal quality different from the first evaluation signal based on the reflected light obtained by the head means.
The control means includes
At least the second evaluation signal obtained by the second evaluation signal generation means and the first evaluation signal obtained by the first evaluation signal generation means at least according to the timing at which the optical disc recording medium is loaded. The result of detecting the value while changing both the focus bias value set in the focus bias means and the spherical aberration correction value set in the spherical aberration correction means with the tracking servo by the tracking servo means turned on. Based on the above, the focus bias value and the spherical aberration correction value at which the value of the first evaluation signal is the best, and the focus bias value and the spherical aberration correction value at which the value of the second evaluation signal is the best are calculated. Indexing process during loading,
The value of the difference between the focus bias value at which the value of the second evaluation signal obtained by the loading indexing process is the best and the focus bias value at which the value of the first evaluation signal is the best. A first difference value calculation process for calculating the difference value as the first difference value;
The focus bias value and the spherical aberration correction value at which the value of the second evaluation signal determined by the loading index process is the best are set in the focus bias unit and the spherical aberration correction unit, respectively. And a loading setting control process for performing control so as to
In the first measurement process,
Control is performed so as to add a focus bias that increases or decreases at the same level around a level obtained by shifting the focus bias value set in the focus bias means by the first difference value, and the value of the first evaluation signal is set. Ru is to measure
The optical disk apparatus according to 請 Motomeko 12.
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながら上記第１評価信号生成手段により得られる第１評価信号の値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とを割り出す装填時割出処理と、
上記装填時割出処理によって割り出された上記第１評価信号の値が最良となったフォーカスバイアスの値と上記球面収差補正値とを、それぞれ上記フォーカスバイアス手段と上記球面収差補正手段とに設定するように制御を行う装填時設定制御処理と、を実行するようにされ、
上記第１測定処理では、
上記フォーカスバイアス手段に設定されているフォーカスバイアス値のレベルを中心として同レベルで増減するフォーカスバイアスを加算するように制御を行って上記第１評価信号の値を測定するようにされる
請求項１２に記載の光ディスク装置。 Further, the control means includes
The focus bias value set in the focus bias means and the spherical aberration correction means are set at least in a state where the tracking servo by the tracking servo means is turned on at least according to the timing when the optical disc recording medium is loaded. Based on the result of detecting the value of the first evaluation signal obtained by the first evaluation signal generation means while changing both the spherical aberration correction values, the focus bias value and the spherical surface where the value of the first evaluation signal is the best A loading indexing process for determining an aberration correction value;
The focus bias value and the spherical aberration correction value at which the value of the first evaluation signal determined by the loading index process is the best are set in the focus bias means and the spherical aberration correction means, respectively. And a loading setting control process for performing control to
In the first measurement process,
Ru is to perform control so as to add a focus bias to increase or decrease to measure the value of the first evaluation signal at the same level around the level of the focus bias value is set to the focus bias means
The optical disk apparatus according to 請 Motomeko 12.
少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記球面収差補正手段に設定されている球面収差補正値のレベル又はそのレベルを所要の第２差分値分ずらしたレベルを中心として同レベルで増減する球面収差補正値が加算されるように制御を行うと同時に、この同レベルで増減する球面収差補正値の加算に応じて上記第１評価信号生成手段で得られた第１評価信号の値を測定する第２測定処理と、
上記第２測定処理により測定した、上記球面収差補正値の増加側での上記第１評価信号の値と上記球面収差補正値の減少側での上記第１評価信号の値との差を求め、その値が正／負何れであるかについて判別する第２判別処理と、を実行するように構成されると共に、
さらに上記設定制御処理では、
上記第２判別処理の判別結果に基づき、上記球面収差補正手段において設定されている球面収差補正値に対して所定のステップ値を加算／減算した球面収差補正値が上記球面収差補正手段に対して設定されるように制御を行うようにされる
請求項１２に記載の光ディスク装置。 Further, the control means includes
At least the level of the spherical aberration correction value set in the spherical aberration correction means or the level obtained by shifting the level by the required second difference value with tracking servo by the tracking servo means turned on. Is controlled so that the spherical aberration correction value that increases or decreases at the same time is added. A second measurement process for measuring a value;
Determining the difference between the value of the first evaluation signal on the increase side of the spherical aberration correction value and the value of the first evaluation signal on the decrease side of the spherical aberration correction value, measured by the second measurement process; A second determination process for determining whether the value is positive or negative, and
Furthermore, in the above setting control process,
Based on the discrimination result of the second discrimination process, a spherical aberration correction value obtained by adding / subtracting a predetermined step value to / from the spherical aberration correction value set in the spherical aberration correction unit is applied to the spherical aberration correction unit. Ru is to perform control so as to set
The optical disk apparatus according to 請 Motomeko 12.
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながら上記第１評価信号生成手段により得られる第１評価信号の値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とを割り出す装填時割出処理と、
上記装填時割出処理により割り出したフォーカスバイアス値については、その値を所要の第１差分値分ずらした値を上記フォーカスバイアス手段に設定するように制御を行い、上記装填時割出処理により割り出した球面収差補正値については、その値を上記第２差分値分ずらした値を上記球面収差補正手段に設定するように制御を行う装填時設定制御処理と、を実行するようにされ、
上記第２測定処理では、
上記球面収差補正手段に設定されている球面収差補正値を上記第２差分値分ずらしたレベルを中心として同レベルで増減する球面収差補正値を加算するように制御を行って上記第１評価信号の値を測定するようにされる
請求項１６に記載の光ディスク装置。 Further, the control means includes
The focus bias value set in the focus bias means and the spherical aberration correction means are set at least in a state where the tracking servo by the tracking servo means is turned on at least according to the timing when the optical disc recording medium is loaded. Based on the result of detecting the value of the first evaluation signal obtained by the first evaluation signal generation means while changing both the spherical aberration correction values, the focus bias value and the spherical surface where the value of the first evaluation signal is the best A loading indexing process for determining an aberration correction value;
The focus bias value determined by the loading index process is controlled so as to set a value obtained by shifting the value by the required first difference value in the focus bias means, and is determined by the loading index process. For the spherical aberration correction value, a setting setting control process at the time of carrying out control so that a value obtained by shifting the value by the second difference value is set in the spherical aberration correction means is executed,
In the second measurement process,
The first evaluation signal is controlled by adding a spherical aberration correction value that increases or decreases at the same level around the level obtained by shifting the spherical aberration correction value set in the spherical aberration correction means by the second difference value. Ru is adapted to measure the value
The optical disk apparatus according to 請 Motomeko 16.
上記制御手段は、
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、上記第２評価信号生成手段により得られる第２評価信号と上記第１評価信号生成手段により得られる第１評価信号とのそれぞれについて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながらその値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値と、上記第２評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とのそれぞれを割り出す装填時割出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となった球面収差補正値と、上記第１評価信号の値が最良となった球面収差補正値との差の値を上記第２差分値として算出する第２差分値算出処理と、
上記装填時割出処理によって割り出された上記第２評価信号の値が最良となったフォーカスバイアスの値と上記球面収差補正値とを、それぞれ上記フォーカスバイアス手段と上記球面収差補正手段とに設定するように制御を行う装填時設定制御処理と、をさらに実行するようにされると共に、
上記第２測定処理では、
上記球面収差補正手段に設定されている球面収差補正値を上記第２差分値分ずらしたレベルを中心として同レベルで増減する球面収差補正値を加算するように制御を行って上記第１評価信号の値を測定するようにされる
請求項１６に記載の光ディスク装置。 And a second evaluation signal generating means for generating a second evaluation signal that is an index of reproduction signal quality different from the first evaluation signal based on the reflected light obtained by the head means.
The control means includes
At least the second evaluation signal obtained by the second evaluation signal generation means and the first evaluation signal obtained by the first evaluation signal generation means at least according to the timing at which the optical disc recording medium is loaded. The result of detecting the value while changing both the focus bias value set in the focus bias means and the spherical aberration correction value set in the spherical aberration correction means with the tracking servo by the tracking servo means turned on. Based on the above, the focus bias value and the spherical aberration correction value at which the value of the first evaluation signal is the best, and the focus bias value and the spherical aberration correction value at which the value of the second evaluation signal is the best are calculated. Indexing process during loading,
A value of a difference between the spherical aberration correction value with the best value of the second evaluation signal calculated by the loading indexing process and the spherical aberration correction value with the best value of the first evaluation signal Second difference value calculation processing for calculating as the second difference value,
The focus bias value and the spherical aberration correction value at which the value of the second evaluation signal determined by the loading index process is the best are set in the focus bias unit and the spherical aberration correction unit, respectively. And a loading setting control process for performing control so as to
In the second measurement process,
The first evaluation signal is controlled by adding a spherical aberration correction value that increases or decreases at the same level around the level obtained by shifting the spherical aberration correction value set in the spherical aberration correction means by the second difference value. Ru is adapted to measure the value
The optical disk apparatus according to 請 Motomeko 16.
少なくとも上記光ディスク記録媒体が装填されたタイミングに応じて、少なくとも上記トラッキングサーボ手段によるトラッキングサーボをオンとした状態で、上記フォーカスバイアス手段に設定されるフォーカスバイアス値と上記球面収差補正手段に設定される球面収差補正値の双方を変化させながら上記第１評価信号生成手段により得られる第１評価信号の値を検出した結果に基づき、上記第１評価信号の値が最良となったフォーカスバイアス値と球面収差補正値とを割り出す装填時割出処理と、
上記装填時割出処理によって割り出された上記第１評価信号の値が最良となったフォーカスバイアスの値と上記球面収差補正値とを、それぞれ上記フォーカスバイアス手段と上記球面収差補正手段とに設定するように制御を行う装填時設定制御処理と、を実行するようにされ、
上記第２測定処理では、
上記球面収差補正手段に設定されている球面収差補正値のレベルを中心として同レベルで増減する球面収差補正値を加算するように制御を行って上記第１評価信号の値を測定するようにされる
請求項１６に記載の光ディスク装置。 Further, the control means includes
The focus bias value set in the focus bias means and the spherical aberration correction means are set at least in a state where the tracking servo by the tracking servo means is turned on at least according to the timing when the optical disc recording medium is loaded. Based on the result of detecting the value of the first evaluation signal obtained by the first evaluation signal generation means while changing both the spherical aberration correction values, the focus bias value and the spherical surface where the value of the first evaluation signal is the best A loading indexing process for determining an aberration correction value;
The focus bias value and the spherical aberration correction value at which the value of the first evaluation signal determined by the loading index process is the best are set in the focus bias means and the spherical aberration correction means, respectively. And a loading setting control process for performing control to
In the second measurement process,
Control is made to add a spherical aberration correction value that increases or decreases at the same level around the level of the spherical aberration correction value set in the spherical aberration correction means, and the value of the first evaluation signal is measured. Ru
The optical disk apparatus according to 請 Motomeko 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005135670A JP4581825B2 (en) | 2004-09-01 | 2005-05-09 | Optical disc apparatus, focus bias, and spherical aberration correction value adjustment method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004254326 | 2004-09-01 | ||
| JP2005135670A JP4581825B2 (en) | 2004-09-01 | 2005-05-09 | Optical disc apparatus, focus bias, and spherical aberration correction value adjustment method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2006099928A JP2006099928A (en) | 2006-04-13 |
| JP2006099928A5 true JP2006099928A5 (en) | 2008-05-29 |
| JP4581825B2 JP4581825B2 (en) | 2010-11-17 |
Family
ID=36239543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005135670A Expired - Fee Related JP4581825B2 (en) | 2004-09-01 | 2005-05-09 | Optical disc apparatus, focus bias, and spherical aberration correction value adjustment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4581825B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4727971B2 (en) * | 2004-11-11 | 2011-07-20 | 株式会社日立製作所 | Optical disc recording / reproducing apparatus |
| JP4770688B2 (en) | 2006-10-12 | 2011-09-14 | 船井電機株式会社 | Optical disk device |
| US8179754B2 (en) * | 2008-05-26 | 2012-05-15 | Sony Computer Entertainment Inc. | Optical disc apparatus, method, and information storage medium for reading information recorded on an optical disc medium |
| CN102341856B (en) * | 2009-03-02 | 2015-01-07 | 索尼电脑娱乐公司 | Optical disk device, control method therefor, program, and information recording medium |
| JP5564189B2 (en) | 2009-03-02 | 2014-07-30 | 株式会社ソニー・コンピュータエンタテインメント | Optical disc apparatus, control method therefor, program, and information storage medium |
| JP5564188B2 (en) * | 2009-03-02 | 2014-07-30 | 株式会社ソニー・コンピュータエンタテインメント | Optical disc apparatus, control method therefor, program, and information storage medium |
| JP5055411B2 (en) * | 2010-08-23 | 2012-10-24 | 株式会社日立製作所 | Optical disk apparatus and optical disk apparatus adjustment method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003123282A (en) * | 2001-08-06 | 2003-04-25 | Sharp Corp | Focal point adjusting method and optical pickup device |
| KR20030042913A (en) * | 2001-11-26 | 2003-06-02 | 삼성전자주식회사 | Recording/reproducing apparatus and control method thereof |
| JP4129164B2 (en) * | 2001-12-07 | 2008-08-06 | 松下電器産業株式会社 | Optical information processing apparatus and optical information processing method |
| JP4154962B2 (en) * | 2002-09-03 | 2008-09-24 | ソニー株式会社 | Disk drive device, focus bias, and spherical aberration adjustment method |
| JP4231759B2 (en) * | 2003-09-22 | 2009-03-04 | 株式会社日立メディアエレクトロニクス | Optical information recording device |
-
2005
- 2005-05-09 JP JP2005135670A patent/JP4581825B2/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2006099928A5 (en) | ||
| US7782722B2 (en) | Method of adjusting spherical aberration and focus offset and information recording/reproduction apparatus using the same | |
| US7852715B2 (en) | Optical disc apparatus and optical disc determining method | |
| JP4145593B2 (en) | Spherical aberration correction apparatus and spherical aberration correction method | |
| US20090059742A1 (en) | Optical disk drive with spherical aberration measurement and method of measuring spherical aberration in an optical disk drive | |
| JP4074063B2 (en) | Optical information recording method and apparatus, and recording medium recording optical information recording control program | |
| JP2003109232A (en) | Servo circuit and servo method used for optical disk playback device | |
| US20080031107A1 (en) | Optical disk apparatus and a method for compensating recording power of the same | |
| JP4460569B2 (en) | Optical disc apparatus and recording power setting method thereof | |
| US20060198262A1 (en) | Optical recording apparatus and optical recording method controlling laser power for disc overwriting | |
| US20080273432A1 (en) | Processing method of optical disc recording/playback signal, optical disc recording/playback device and program | |
| US20080101177A1 (en) | Optical disc recording apparatus and optical disc recording method | |
| JP2007157196A (en) | Optical disk device and recording power setting method | |
| JP4406260B2 (en) | Recording power determination method and recording power control method for optical disc apparatus | |
| JP4218596B2 (en) | Optical disk device | |
| CN102314902B (en) | Optical recording device and method | |
| US8144556B2 (en) | Optical disc recording apparatus and method, and computer program | |
| JPWO2005122157A1 (en) | Optical disk device and integrated circuit of optical disk device | |
| JP4234759B2 (en) | Information recording / reproducing apparatus, information recording / reproducing method, and focus position adjusting program | |
| KR100619028B1 (en) | Method of determining optimum power to record and/or erase data, and data recording and/or reproducing apparatus therefor | |
| JP2008524760A (en) | How to measure and optimize radial vertical crosstalk | |
| KR100624266B1 (en) | Method for controlling track servo of holographic rom disk | |
| KR100948145B1 (en) | Focus servo control method, apparatus and optical disc drive using the same | |
| JP4518138B2 (en) | Optical disk playback device | |
| KR20090101366A (en) | Applied light power adjusting method and optical information recording/reproducing device |