JP2002170234A - Optical disk device - Google Patents

Optical disk device

Info

Publication number
JP2002170234A
JP2002170234A JP2000372917A JP2000372917A JP2002170234A JP 2002170234 A JP2002170234 A JP 2002170234A JP 2000372917 A JP2000372917 A JP 2000372917A JP 2000372917 A JP2000372917 A JP 2000372917A JP 2002170234 A JP2002170234 A JP 2002170234A
Authority
JP
Japan
Prior art keywords
recording
power
optical disk
disk device
land
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.)
Pending
Application number
JP2000372917A
Other languages
Japanese (ja)
Inventor
Shigeki Yamazaki
茂樹 山崎
Hiroyuki Minemura
浩行 峯邑
Toshimitsu Kaku
敏光 賀来
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2000372917A priority Critical patent/JP2002170234A/en
Publication of JP2002170234A publication Critical patent/JP2002170234A/en
Pending legal-status Critical Current

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  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PROBLEM TO BE SOLVED: To shorten the processing time for trial writing and recording in order to prevent the increase of the processing time for trial writing of an optical disk device. SOLUTION: This optical disk device has memories for separately storing the recording powers for Lands and Grooves in recording of trial writing, has Land/Groove changeover signals capable of selecting the memories and is capable of recording continuous sectors by recognizing PID sections by a circuit for detecting the PID sections and changing over the Land/Groove changeover signals during the passage through the PID sections, thereby alternately changing over between the recording power for the Lands and the power for the Grooves. Since the continuous sector recording is possible in the recording processing for the trial writing with the optical disk device, there is an effect of shortening the processing time for the trial writing.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、光磁気ディスク、
及び相変化型光ディスク等の情報の書換可能な光ディス
クを用いる光ディスク記録再生装置に関する。
[0001] The present invention relates to a magneto-optical disk,
And an optical disk recording / reproducing apparatus using an information rewritable optical disk such as a phase change optical disk.

【0002】[0002]

【従来の技術】従来光ディスク装置の試し書きの記録方
法は、図5に示すように1セクタおきに記録パワーを徐
々に変化(試し書き記録パワー=基準パワー×パワー係
数I(i))させて記録していた。2セクタの内の前セクタ
でレーザパワー値を切換えて、後セクタで記録する。連
続で記録するためには、PID部を検出して、PID通過時間
内にパワーを変化させなければならなかったが数十usで
パワーを設定することができなかった。図5に示すPID
の通過時間はDVDRAM 2.6GBの例であり、WRGTとは記録し
ているときにアクティブになる信号(Lが真値)である。
2. Description of the Related Art In a conventional test recording method of an optical disk apparatus, as shown in FIG. 5, the recording power is gradually changed every other sector (test recording power = reference power × power coefficient I (i)). I was recording. The laser power value is switched in the first sector of the two sectors, and recording is performed in the second sector. In order to record continuously, the power must be changed within the PID transit time by detecting the PID portion, but the power could not be set in tens of us. PID shown in FIG.
Is an example of DVDRAM 2.6 GB, and WRGT is a signal (L is a true value) that becomes active during recording.

【0003】試し書きの記録パワー補正方法については
特開平10ー320777号公報に記載された方法がある。
As a method for correcting recording power for trial writing, there is a method described in Japanese Patent Application Laid-Open No. 10-320777.

【0004】[0004]

【発明が解決しようとする課題】2.6GB DVDRAMからさら
に容量がアップした4.7GB DVDRAMにおいても試し書き処
理が必要だが、4.7GBの試し書きではパワー補正の他に
パルス幅パラメータの補正も必要になり、試し書きの処
理時間が増加する。ローディング時の試し書きの処理時
間の増加を極力抑えるために試し書きの記録処理時間を
短くする。そのため試し書きの記録の方法を1セクタお
き記録から連続セクタ記録にする。
A test write process is required for a 4.7 GB DVDRAM having an even larger capacity than a 2.6 GB DVDRAM, but a 4.7 GB test write requires correction of a pulse width parameter in addition to power correction. Thus, the processing time for trial writing increases. The recording processing time of test writing is shortened in order to minimize the increase in the processing time of test writing during loading. Therefore, the recording method of test writing is changed from recording every other sector to continuous sector recording.

【0005】[0005]

【課題を解決するための手段】上述した課題を解決する
ためには、試し書きの記録時に、Land及びGroove用の記
録パワーを別々に格納するメモリを有し、そのメモリを
選択することが可能なLand/Groove切り換え信号をも
ち、PID部を検出する回路によりPID部を認識して、PID
部を通過中にLand/Groove切り換え信号を切り換えるこ
とによりLand用記録パワーとGroove用パワーを交互に切
り換えて、連続セクタ記録することが可能となる。
In order to solve the above-mentioned problem, it is possible to have a memory for separately storing the recording power for Land and Groove at the time of recording the test writing, and to select the memory. Circuit that detects the PID part by a circuit that detects the PID part,
By switching the Land / Groove switching signal while passing through the section, the recording power for Land and the power for Groove can be alternately switched to perform continuous sector recording.

【0006】光ディスク装置の試し書きの記録処理にお
いて、Land及びGroove用の記録パワーを別々に格納する
メモリを有し、まず試し書きの記録処理を開始する前に
Lnad(またはGroove)に記録パワーを設定し、Land/Groo
ve切り換え信号をLand側(またはGroove側)にし、第一セ
クタ目の記録中にGroove(またはLand)に記録パワーを設
定し、第二セクタ目のPID部を検出する回路によりPID部
を認識して、PID部を通過中にLand/Groove切り換え信
号をGroove(またはLand)にする。第二セクタ目の記録中
にLand(またはGroove)に記録パワーを設定して、第三セ
クタ目のPID部通過中にLand/Groove切り換え信号をlan
dに変更することにより連続セクタ記録することを可能
として、試し書き処理時間の短縮を実現できる。
[0006] In the test write recording process of the optical disk device, the memory has a memory for separately storing the recording power for Land and Groove, and first, before starting the test write recording process.
Set the recording power to Lnad (or Groove), and select Land / Groo
ve Set the switching signal to the Land side (or Groove side), set the recording power to Groove (or Land) during the recording of the first sector, and recognize the PID part by the circuit that detects the PID part of the second sector. The Land / Groove switching signal is set to Groove (or Land) while passing through the PID section. The recording power is set to Land (or Groove) during the recording of the second sector, and the Land / Groove switching signal is set to lan during the passage of the PID portion of the third sector.
By changing to d, it is possible to perform continuous sector recording, and the test writing processing time can be reduced.

【0007】[0007]

【発明の実施の形態】本発明の実施例を図を参照しなが
ら説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

【0008】図1において10はレーザからの光を絞り
込み光ディスク媒体に照射する光学ブロック、20は光
学ヘッドからの再生光信号を電気的に処理し位相のずれ
量を測定する回路(アナログ部)、25はエラーパルス
を検出する回路(デジタル部)、30はレーザからの光を
記録・再生用に分離するビームスプリッタ、50は光源
となる半導体レーザ、40は半導体レーザを駆動するレ
ーザ駆動回路、41は記録時に動作するアンプ、42は
メモリに記憶されている記録パワー量に基づいて記録波
形を発生する波形発生回路、44はデータの2値化信号
としてのNRZIから記録マーク及びスペースを検出す
る回路、43はPLL検出回路、45はシリアルで転送
された記録パワーデータをパラレルに変換する回路、4
6はLand/Groove別々に記録パワーデータを格納するメ
モリ、46内に記述されているPwは記録パワー(mW)、Pe
は消去パワー(mW)、Pbはボトムパワー(mW)、48は再生
パワーデータを格納するメモリ、55は記録再生制御回
路である。
In FIG. 1, reference numeral 10 denotes an optical block for narrowing down the light from a laser and irradiating the optical disk medium, 20 a circuit for electrically processing a reproduction light signal from an optical head and measuring a phase shift amount (analog unit), 25 is a circuit for detecting an error pulse (digital unit), 30 is a beam splitter for separating light from a laser for recording and reproduction, 50 is a semiconductor laser as a light source, 40 is a laser driving circuit for driving the semiconductor laser, 41 Is an amplifier that operates during recording, 42 is a waveform generation circuit that generates a recording waveform based on the amount of recording power stored in the memory, and 44 is a circuit that detects a recording mark and space from NRZI as a binary signal of data. , 43 is a PLL detection circuit, 45 is a circuit for converting the serially transferred recording power data into parallel,
6 is a memory for storing recording power data separately for Land / Groove, Pw described in 46 is recording power (mW), Pe
Is an erasing power (mW), Pb is a bottom power (mW), 48 is a memory for storing reproduction power data, and 55 is a recording / reproduction control circuit.

【0009】試し書きの記録処理はマイコン60からス
イッチ52をマイコン制御側に切り換え、記録再生制御
回路55対して記録開始指示を行い、記録レーザパワー
群46(Pw,Pe,Pbの3つのパワーを重畳して記録パワー
値が決定される)をシリアルパラレル変換45を通し
て、記録レーザパワー群46にデータを格納する。レー
ザ駆動回路40ではCLK,NRZIデータ、WRGT(データを記
録するときにアクティブとなる(Lが真値))を入力信号
とする。波形発生回路42に対してマーク&スペース検
出回路44の出力データとPLL回路43を通ったクロッ
クを入力し、アンプ41を通して記録波形を発生する。
In the test writing recording process, the microcomputer 52 switches the switch 52 to the microcomputer control side, instructs the recording / reproduction control circuit 55 to start recording, and controls the recording laser power group 46 (Pw, Pe, Pb). The data is stored in the recording laser power group 46 through the serial / parallel conversion 45. In the laser driving circuit 40, CLK, NRZI data, and WRGT (active when data is recorded (L is a true value)) are input signals. The output data of the mark & space detection circuit 44 and the clock passed through the PLL circuit 43 are input to the waveform generation circuit 42, and a recording waveform is generated through the amplifier 41.

【0010】通常の記録動作ではマイコン60がスイッ
チ52を記録再生制御回路側に切り換え、L/G自動切換
え信号65が記録再生制御回路からL/Gの切換え点で変
化して出力されて、スイッチ52を通って記録レーザパ
ワー群46のメモリをLandあるいはGrooveに切り換えて
動作する。
In a normal recording operation, the microcomputer 60 switches the switch 52 to the recording / reproduction control circuit side, and an L / G automatic switching signal 65 is output from the recording / reproduction control circuit at the L / G switching point after being changed. The memory of the recording laser power group 46 is switched to Land or Groove through the operation 52 to operate.

【0011】試し書きの再生処理は、記録していない状
態で再生パワー48が設定されていて、マイコン60か
ら記録再生制御回路55対して再生開始指示を行う。光
学ブロック10、ビームスプリッタ30を通って再生信
号が位相ずれ量測定回路(アナログ部)20に入力され、
エラーパルスが論理信号として出力される(その他の入
力としてCLK,NRZIデータ、RDGT(データを再生している
期間アクティブになる)がある)。エラーパルス検出回
路(デジタル部)25では図示していないが1セクタを
4分割してエラーパルス数をメモリに格納し、マイコン
60に取り込まれて処理される。この回路を用いて記録
条件を求めるにはパワーを変化させて特定のパターンを
ディスクに記録し、再生してエラーパルス数が最小にな
る条件を見出せばよい。
In the reproduction process of the test writing, the reproduction power 48 is set in a state where the recording is not performed, and the microcomputer 60 instructs the recording / reproduction control circuit 55 to start the reproduction. The reproduction signal is input to the phase shift amount measurement circuit (analog unit) 20 through the optical block 10 and the beam splitter 30,
An error pulse is output as a logic signal (CLK, NRZI data, and RDGT (active during data reproduction) as other inputs). Although not shown, the error pulse detection circuit (digital unit) 25 divides one sector into four, stores the number of error pulses in a memory, and takes in the microcomputer 60 for processing. In order to determine the recording condition using this circuit, a specific pattern is recorded on a disk by changing the power, and the condition is reproduced to find a condition that minimizes the number of error pulses.

【0012】図2が試し書きの記録パワーを連続的に変
化させるタイミングを示している。図に示されているPI
D通過時間はDVDRAM 2.6GBの例である。マイコン60か
らスイッチ52をマイコン制御側に切り換え、試し書き
の記録を行う前にland側の記録レーザパワー群46にデ
ータを格納し、L/G切換え指示信号66をLandに指示す
る。記録指示を記録再生制御回路55に指示して、1セ
クタ目の記録処理が開始されたら、記録レーザパワー群
46のGroove側メモリに値を設定して、ID部を検出した
らL/G切換え指示信号66をGrooveに切り替える。2セ
クタ目を処理中に記録レーザパワー群46のLand側メモ
リに値を設定して、次のID部を検出したらL/G切換え指
示信号66をLandに切り替える。このようにして、連続
的に記録パワーを変化することができる。
FIG. 2 shows the timing at which the recording power for test writing is continuously changed. PI shown in figure
D transit time is an example of DVDRAM 2.6GB. The microcomputer 52 switches the switch 52 to the microcomputer control side, stores data in the recording laser power group 46 on the land side before recording the test writing, and instructs the L / G switching instruction signal 66 to Land. When a recording instruction is instructed to the recording / reproduction control circuit 55 and the recording processing of the first sector is started, a value is set in the Groove side memory of the recording laser power group 46, and when an ID portion is detected, an L / G switching instruction is issued. Switch signal 66 to Groove. During processing of the second sector, a value is set in the Land side memory of the recording laser power group 46, and when the next ID section is detected, the L / G switching instruction signal 66 is switched to Land. Thus, the recording power can be changed continuously.

【0013】図3は試し書きのシーケンス(試し書きに
はパワー補正、パルスシフト補正があるがここではパワ
ー補正について説明する)を示す。この試し書きシーケ
ンス例ではボトムパワーPb(mW)は一定の値とし、記録パ
ワーPw、消去パワーPeを変化させて最適記録パワーを求
める。ディスクが新たにローディングされると試し書き
が実行される。内周ドライブテスト領域のGrooveトラッ
クに位置づけ、未記録トラックを16セクタ生成し、11
Twパターンを記録し、記録パワーPw、消去パワーPeの暫
定値を検出し、11Twパターンに3Twパターンを重ね書き
して、消去パワーPeの最適値を検出し、11Twパターンを
記録し消去パワーPeの最適値を検出する。内周のLandト
ラックに移動して、未記録トラックを16セクタ生成
し、記録パワーPw、消去パワーPeの最適値を検出し、そ
の求まったPw,Peの最適値を使って、GrooveとLandにそ
れぞれ8セクタずづ00データを記録したのち再生してエ
ラーパルス数が基準値以下かチェックする。
FIG. 3 shows a test writing sequence (the test writing includes power correction and pulse shift correction, but power correction will be described here). In this test writing sequence example, the bottom power Pb (mW) is set to a constant value, and the optimum recording power is obtained by changing the recording power Pw and the erasing power Pe. When a disc is newly loaded, test writing is performed. It is positioned on the Groove track in the inner drive test area, and 16 unrecorded tracks are generated.
The Tw pattern is recorded, the provisional values of the recording power Pw and the erasing power Pe are detected, the 3Tw pattern is overwritten on the 11Tw pattern, the optimum value of the erasing power Pe is detected, and the 11Tw pattern is recorded and the erasing power Pe is determined. Find the optimal value. Move to the inner land track, generate 16 unrecorded tracks, detect the optimum values of the recording power Pw and the erasing power Pe, and use the obtained optimum values of Pw and Pe to Groove and Land. After recording 00 data in each of 8 sectors, reproduction is performed and it is checked whether the number of error pulses is equal to or less than a reference value.

【0014】外周のGroove&land境界にトラックを移動
して、未記録トラックかを判定し、GrooveとLandにそれ
ぞれ8セクタずづの領域を使ってPw,Peの最適値を検出
し、その求まったPw,Peの最適値を使って、GrooveとLan
dにそれぞれ8セクタずづ00データを記録したのち再生
してエラーパルス数が基準値以下かチェックする。チェ
ックがOKなら記録パワーのテーブルをゾーン毎に生成す
る。
The track is moved to the outer Groove & land boundary to determine whether the track is an unrecorded track, and the optimum values of Pw and Pe are detected by using areas of 8 sectors each for Groove and Land. Groove and Lan using optimal values of
After recording 00 data in each of 8 sectors in d, reproduction is performed and it is checked whether the number of error pulses is equal to or less than a reference value. If the check is OK, a recording power table is generated for each zone.

【0015】図4はDVDRAMの記録容量が2.6GB(最内周で
1周あたりのセクタ数は17)の場合の例であり、横軸
は実行セクタ数、縦軸は記録パワーの変化量を示す。左
側が1セクタおきに記録(基準パワーの0.8倍から1.01倍
で変化、キザミ幅は3%)、左側が連続セクタ記録した
(基準パワーの0.71倍から1.16倍で変化、キザミ幅3
%)場合を示す。
FIG. 4 shows an example in which the recording capacity of the DVDRAM is 2.6 GB (the number of sectors per round at the innermost track is 17). The horizontal axis indicates the number of executing sectors, and the vertical axis indicates the amount of change in the recording power. Show. The left side records every other sector (changes from 0.8 times to 1.01 times the reference power, crack width is 3%), and the left side records continuous sectors (changes from 0.71 times to 1.16 times the reference power, crack width 3)
%).

【0016】連続セクタで記録した場合には1回転あた
りの記録パワーの変化量が大きくなるので、1セクタお
きの記録で、1回目の記録、再生及び消去で最適パワー
が検出できず、2回目で最適パワーを検出するような場
合には、連続セクタ記録の処理時間短縮の効果が現れ
る。
When recording is performed in a continuous sector, the amount of change in the recording power per rotation becomes large. Therefore, in recording every other sector, the optimum power cannot be detected in the first recording, reproduction and erasing, and the second power is not detected. In the case where the optimum power is detected by the above method, the effect of reducing the processing time of the continuous sector recording appears.

【0017】[0017]

【発明の効果】本発明は光ディスク装置の試し書き処理
で連続したセクタで記録パワーを変化させることができ
るので試し書き処理時間を短縮する効果がある。
According to the present invention, the recording power can be changed in consecutive sectors in the test writing process of the optical disk device, and therefore, the time required for the test writing process can be shortened.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.

【図2】本発明の試し書きの記録時に連続記録するとき
のタイミングチャートである。
FIG. 2 is a timing chart when continuous recording is performed during test writing according to the present invention.

【図3】本発明の実施例のフローを示す図である。FIG. 3 is a diagram showing a flow of an embodiment of the present invention.

【図4】1回転あたり実行できる記録セクタ数とレーザ
パワーの変更量を表わす図である。
FIG. 4 is a diagram showing the number of recording sectors and the amount of change in laser power that can be executed per rotation.

【図5】試し書きの記録時に1セクタおきに記録すると
きのタイミングチャートである。
FIG. 5 is a timing chart when recording is performed every other sector during recording of test writing.

【符号の説明】[Explanation of symbols]

10…光学ヘッドブロック、20…位相ずれ量測定回路
(アナログ部)、25…エラーパルス検出回路(デジタ
ル部)、30…ビームスプリッタ、40…レーザ駆動回
路、41…アンプ、42…波形発生回路、44…マーク
&スペース検出回路、45…シリアル・パラレルデータ
変換回路、46…記録パワー群設定メモリ、48…再生
パワー設定メモリ、50…半導体レーザ、52…スイッ
チ、55…記録再生制御回路、56…ID検出回路、60
…マイコン。
DESCRIPTION OF SYMBOLS 10 ... Optical head block, 20 ... Phase shift amount measurement circuit (analog part), 25 ... Error pulse detection circuit (digital part), 30 ... Beam splitter, 40 ... Laser drive circuit, 41 ... Amplifier, 42 ... Waveform generation circuit, 44: mark & space detection circuit, 45: serial / parallel data conversion circuit, 46: recording power group setting memory, 48: reproduction power setting memory, 50: semiconductor laser, 52: switch, 55: recording / reproduction control circuit, 56 ... ID detection circuit, 60
... microcomputer.

フロントページの続き (72)発明者 賀来 敏光 茨城県ひたちなか市大字稲田1410番地 株 式会社日立製作所デジタルメディア製品事 業部内 Fターム(参考) 5D044 BC06 CC06 DE03 DE44 DE53 DE57 GK18 5D090 AA01 BB04 CC06 CC14 CC18 DD03 DD05 EE03 GG33 JJ12 5D119 BA01 BB04 DA09 DA14 EC09 HA19 Continued on the front page (72) Inventor Toshimitsu Kaku 1410 Inada, Hitachinaka-shi, Ibaraki F-term in Digital Media Products Division, Hitachi Ltd. 5D044 BC06 CC06 DE03 DE44 DE53 DE57 GK18 5D090 AA01 BB04 CC06 CC14 CC18 DD03 DD05 EE03 GG33 JJ12 5D119 BA01 BB04 DA09 DA14 EC09 HA19

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 光学的情報記録媒体に情報を記録再生す
る光ディスク装置であり、記録条件を定める機能を有
し、記録条件を定めるときに照射するレーザパワーもし
くはパルス幅を毎セクタごとに変化させる手段を有する
ことを特徴とする光ディスク装置。
1. An optical disk device for recording and reproducing information on an optical information recording medium, having a function of determining recording conditions, and changing a laser power or a pulse width to be irradiated when determining recording conditions for each sector. An optical disk device comprising means.
【請求項2】 請求項1に記載の光ディスク装置であっ
て、内周のテスト領域のみあるいは外周のテスト領域の
みあるいは内周と外周のテスト領域で記録条件を定める
機能を有していることを特徴とする光ディスク装置。
2. The optical disk device according to claim 1, wherein the optical disk device has a function of determining recording conditions only in an inner test area, an outer test area only, or an inner and outer test area. Characteristic optical disk device.
JP2000372917A 2000-12-04 2000-12-04 Optical disk device Pending JP2002170234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000372917A JP2002170234A (en) 2000-12-04 2000-12-04 Optical disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000372917A JP2002170234A (en) 2000-12-04 2000-12-04 Optical disk device

Publications (1)

Publication Number Publication Date
JP2002170234A true JP2002170234A (en) 2002-06-14

Family

ID=18842384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000372917A Pending JP2002170234A (en) 2000-12-04 2000-12-04 Optical disk device

Country Status (1)

Country Link
JP (1) JP2002170234A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007042261A (en) * 2005-06-30 2007-02-15 Victor Co Of Japan Ltd Device and method for optimizing recording pulse, and computer program
US7349314B2 (en) 2004-06-23 2008-03-25 Hitachi, Ltd. Recording method and optical disk device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7349314B2 (en) 2004-06-23 2008-03-25 Hitachi, Ltd. Recording method and optical disk device
JP2007042261A (en) * 2005-06-30 2007-02-15 Victor Co Of Japan Ltd Device and method for optimizing recording pulse, and computer program

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