經濟部智慧財產局員工消費合作社印製 501094 A7 B7 五、發明說明（1 ) 【發明之技術領域】 本發明是關於雷射輸出裝置，及搭載雷射輸出裝置之 碟片驅動裝置。 【習知之技術】 對光碟進行記錄/再生的碟片驅動裝置而言，是例如 由搭載雷射二極體等的雷射光源之光學接收器來對碟片輸 出雷射光’在碟片上形成記錄標記，或檢測出雷射光的反 射光，而來進行資訊的再生。 自光學接收器輸出的雷射光會藉由聚焦伺服器來對碟 片的記錄面執行聚焦，而形成適當的雷射光點，且於記錄 再生時執行跟蹤伺服器，而使能夠正確地跟蹤碟片上的軌 道。 就 C D (CD-Digital Audio)或 c D — R 0 M等之再生專 用的碟片媒體而言，由於在碟片上形成有壓紋溝槽，且其 溝槽列會形成軌道，因此只要雷射光點跟蹤該溝槽列的軌 道’便可從此刻的反射光資訊來使資料再生。 另一方面，就 C D — R(CD-Recordable = CD-WO)，C D —R W(CD-Re writable)等之資料可寫入的碟片媒體而言，會 在碟片記錄面中形成溝槽（groove)，該溝槽或溝槽與溝槽間 的巷（land)會形成資料記錄軌。並且，當高位準的雷射光（ 根據記錄資料而調變）對如此的資料記錄軌照射時會形成 記錄標記。雷射光的記錄原理是採用有機色素膜變化方式 或相變化方式。 本紙張尺度適用中國國家標準（cns)A4規格（21〇 x 297公釐） ---------7--裝--------訂---------線-^1^· (請先閱讀背面之注音？事項再填寫本頁) -4- 501094 A7 _____________ B7 五、發明說明（2) 再生時，低位準的雷射會被照射於該資料記錄軌，而 使資料從該反射光資訊再生。 【發明所欲解決之課題】 但，對C D - R的記錄再生裝置而言，必須要有切換 記錄用雷射功率及再生用雷射功率。亦即，關於雷射功率 的模式，有記錄模式與再生模式。 又，對C D - R W的記錄裝置而言，必須要有切換記 錄用雷射功率，消去用雷射功率及再生用雷射功率。亦即 ，關於雷射功率的模式，有記錄模式，消去模式及再生模 式。但，記錄用雷射功率與消去用雷射功率，亦可形成同 一位準。 又，分別在記錄時，再生時及消去時的期間被輸出的 雷射功率必須要作爲各雷射功率模式的設定値而安定輸出 〇 因此，會在雷射輸出時監控雷射輸出位準，一邊比較 該監控位準與設定値，一邊控制雷射輸出，而設置使雷射 功率安定化的電路。 又，在CD - R，CD — RW對應的記錄再生裝置中 ，爲了對應於複數個的雷射功率模式，而必須設置複數個 雷射功率的安定化電路。此情況會對應於雷射功率模式來 選擇1個安定化電路，而使能夠進行所要雷射功率的雷射 輸出。 但，在構成複數個安定化電路時會造成電路構成的複 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注音？事項再填寫本頁) -裝--------訂---------線· 經濟部智慧財產局員工消費合作社印製 -5- 501094 A7 B7 五、發明說明（3 ) 雜化及成本增高。 (請先閱讀背面之注咅？事項再填寫本頁) 又，在安定化電路中通常會使用電容，但安定化電路 會因電容的自我放電及來自附屬外部電路的放電等的影響 ，而無法執行所要位準的輸出。因此，在雷射模式的變更 時，一旦切換安定化電路的選擇狀態，則從該切換時間點 開始所被設定的雷射功率會無法被輸出，或者調整至安定 化狀態的時間冗長，難以依模式變化來使雷射功率迅速且 適當地變化。 【用以解決課題之手段】 本發明有鑑於上述問題，而於可切換複數個雷射功率 模式的裝置中，使被輸出的雷射功率能夠高速且適當地切 換，同時可以使電路構成簡略化爲其目的。 因應於此，本發明之雷射輸出裝置的特徵是具有： 輸出對記錄媒體照射的雷射光之雷射輸出機構；及 對應於所被供給的雷射驅動信號，而使來自上述雷射 輸出機構的雷射輸出之雷射驅動機構；及 經濟部智慧財產局員工消費合作社印製 輸出雷射驅動信號，而使上述雷射輸出機構所輸出的 雷射功率能夠安定化之安定化機構；及 對來自上述安定化機構的雷射驅動信號進行對應於複 數個雷射功率模式的位準切換，然後供應給上述雷射驅動 機構，藉此而使能夠在對應於各雷射功率模式的雷射功率 下來從上述雷射輸出機構輸出雷射光之雷射功率切換機構 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -6 - 501094 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（4 ) 又，上述雷射功率切換機構是使用對應於各雷射功率 模式的雷射功率而設定分壓比之阻抗分壓電路，而針對作 爲來自上述安定化機構的雷射驅動信號的電壓値進行對應 於各雷射功率模的位準切換。 又，搭載此類的雷射輸出裝置來構成碟片驅動裝置。 亦即，本發明中是以安定化機構能夠系統化具備的同 時，在雷射功率切換機構中，例如藉由阻抗分壓等手法來 使安定化機構的輸出（雷射驅動信號）能夠切換成複數個 高位準。.藉此，對於雷射驅動機構而言，各位準的雷射驅 動信號會按照雷射功率模式來供給，而得以從雷射輸出機 構實現對應於模式的雷射功率輸出。又，此情況在雷射功 率的切換時不需要切換安定化電路。 【發明之實施形態】 以下，說明本發明的實施形態，亦即對應於C D - R ，C D - R W的碟片驅動裝置（記錄再生裝置）。 C D - R是在記錄層中使用有機色素之只能寫入一次 (Write Once )型的媒體，C D — R W則是利用相變化技 術來使能夠重複寫入資料的媒體。 在此，藉由第1圖來說明對CD — R，CD — RW等 之碟片進行資料的記錄再生之本實施例的碟片驅動裝置的 構成。 第1圖中，碟片9 0爲CD — R或CD — RW。亦即 ，在此所謂的碟片9 0是指再生可能的CD — R，CD — 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 501094 A7 B7 V. Description of the Invention (1) [Technical Field of the Invention] The present invention relates to a laser output device and a disc drive device equipped with the laser output device. [Known technology] For a disc drive device for recording / reproducing an optical disc, for example, an optical receiver that is equipped with a laser light source such as a laser diode to output laser light to the disc is formed on the disc. Record marks or detect reflected light from laser light to reproduce information. The laser light output from the optical receiver will focus the recording surface of the disc by the focusing server to form an appropriate laser light spot, and the tracking server will be executed during recording and reproduction, so that the disc can be tracked correctly On the track. Regarding CD (CD-Digital Audio) or c D — R 0 M disc media dedicated for reproduction, because embossed grooves are formed on the disc and the groove rows will form tracks, so as long as the thunder The light spot traces the track of the groove row, and the data can be reproduced from the reflected light information at this moment. On the other hand, for CD-R (CD-Recordable = CD-WO), CD-RW (CD-Rewritable) and other writable disc media, grooves are formed in the disc recording surface (Groove), the groove or a land between the grooves will form a data recording track. In addition, when high-level laser light (modulated according to the recorded data) is irradiated to such a data recording track, a recording mark is formed. The principle of laser light recording is to adopt the organic pigment film change method or phase change method. This paper size applies to China National Standard (cns) A4 specification (21 × 297 mm) --------- 7--installation -------- order -------- -Line- ^ 1 ^ · (Please read the phonetic on the back? Matters before filling out this page) -4- 501094 A7 _____________ B7 V. Description of the invention (2) Low-level laser will be irradiated to this data record during reproduction Track, and the data is reproduced from the reflected light information. [Problems to be Solved by the Invention] However, for a CD-R recording / reproducing device, it is necessary to switch the laser power for recording and the laser power for reproduction. That is, the laser power modes include a recording mode and a reproduction mode. In addition, for CD-RW recording devices, it is necessary to switch the laser power for recording, the laser power for erasing, and the laser power for reproduction. That is, regarding the laser power mode, there are a recording mode, an erasing mode, and a reproduction mode. However, the laser power for recording and the laser power for erasing can also form the same level. In addition, the laser power output during recording, reproduction, and erasing must be set as a stable setting for each laser power mode. Therefore, the laser output level is monitored during laser output. The laser output is controlled while comparing the monitoring level and the setting value, and a circuit for stabilizing the laser power is provided. In addition, in the recording / reproducing apparatus corresponding to CD-R, CD-RW, in order to support a plurality of laser power modes, a plurality of laser power stabilization circuits must be provided. In this case, one stabilization circuit is selected corresponding to the laser power mode, so that the laser output of the desired laser power can be performed. However, when forming multiple stabilization circuits, the paper size of the duplicate circuit configuration will be subject to the Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back? Matters before filling out this page)-Install -------- Order --------- Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -5- 501094 A7 B7 V. Description of the invention (3) Hybridization and increased costs. (Please read the note on the back? Matters before filling out this page.) Also, capacitors are usually used in stabilization circuits, but stabilization circuits cannot be affected by the self-discharge of capacitors and discharge from auxiliary external circuits. Execute the output at the desired level. Therefore, when the laser mode is changed, once the selection state of the stabilization circuit is switched, the laser power set from the switching time point cannot be output or the time to adjust to the stabilization state is lengthy and difficult to follow. The mode changes to make the laser power change quickly and appropriately. [Means for solving the problem] In view of the above problems, the present invention enables a laser power output to be switched at a high speed and appropriately in a device capable of switching a plurality of laser power modes, and at the same time, the circuit configuration can be simplified. For its purpose. In response to this, the laser output device of the present invention is characterized by having: a laser output mechanism that outputs laser light that is irradiated to the recording medium; and a laser drive mechanism corresponding to the supplied laser drive signal, A laser driving mechanism for laser output; and a stabilizing mechanism for stably stating the laser power output by the laser output mechanism output by the consumer cooperative of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs; and The laser driving signals from the stabilization mechanism switch the levels corresponding to a plurality of laser power modes, and then supply the laser driving mechanisms to the laser driving mechanism, thereby enabling the laser power corresponding to each laser power mode to be adjusted. The laser power switching mechanism that outputs laser light from the above laser output mechanism. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). -6-501094 Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs. A7 B7 V. Description of the Invention (4) The laser power switching mechanism is designed by using laser power corresponding to each laser power mode. Dividing ratio of impedance dividing circuit, and for driving the laser as a voltage signal from the stabilization mechanism Zhi to perform a corresponding switching power level of each laser mode. A disk drive device is configured by mounting such a laser output device. That is, in the present invention, while the stabilization mechanism can be systematically provided, in the laser power switching mechanism, for example, the output of the stabilization mechanism (laser drive signal) can be switched to Plural high levels. In this way, for the laser driving mechanism, the laser driving signal of each standard is supplied according to the laser power mode, and the laser power output corresponding to the mode can be realized from the laser output mechanism. In this case, it is not necessary to switch the stabilization circuit when switching the laser power. [Embodiment of Invention] Hereinafter, an embodiment of the present invention will be described, that is, a disc drive device (recording / reproducing device) corresponding to CD-R, CD-RW. CD-R is a write-once type medium that uses organic pigments in the recording layer, and CD-RW is a medium that uses phase change technology to enable repeated writing of data. Here, the structure of the disc drive device of the present embodiment for recording and reproducing data on a disc such as CD-R, CD-RW, etc. will be described with reference to FIG. In the first figure, the disc 90 is a CD-R or a CD-RW. That is, the so-called disc 90 here refers to a CD that can be reproduced — R, CD — This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm)
線# (請先閱讀背面之注音3事項再填寫本頁) 501094 A7 ___ _B7____ 五、發明說明（5 ) R W等。 碟片9 0是被載置於轉盤7上，在記錄/再生動作中 ’藉由主軸馬達1來以一定線速度（C L V)或一定角速 度（C A V )旋轉驅動。並且，利用光學接收器1來讀出 碟片9 0上的凹槽（Pit)資料（相變化凹槽，或有機色素變 化（反射率變化）的凹槽）。又，CD - DA或CD — R〇Μ等情況時，凹槽爲壓紋凹槽。 此外，在接收器1內形成有：形成雷射光源的雷射二 極體4，供以檢測出反射光的光學傳感器5，形成雷射光 的輸出端的物鏡2，經由物鏡2來將雷射光照射於碟片記 錄面，且將反射光引導至光學傳感器5的光學系（未圖示 )° 另外，還會設置監控用傳感器2 2，該監控用傳感器 22會接受來自雷射二極體4的輸出光的一部份。 再者，物鏡2可藉由二軸機構3來移動保持於跟蹤方 向及聚焦方向。 又，接收器1全體可利用串列機構8來移動於碟片半 徑方向。 又，接收器1的雷射二極體4會根據來自雷射驅動器 1 8的驅動信號（驅動電流）來執行雷射發光驅動。 又，來自碟片9 0的反射光資訊會藉由光學傳感器5 而被檢測出，作爲對應於接收光量的電氣信號來供應至 R F放大器9。 又，在RF放大器9中，對應於來自複數個受光元件 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂---------線· 經濟部智慧財產局員工消費合作社印製 -8- 501094 A7线 # (Please read the note 3 on the back before filling out this page) 501094 A7 ___ _B7____ 5. Description of the invention (5) R W etc. The disc 90 is mounted on the turntable 7, and is rotated and driven by the spindle motor 1 at a constant linear velocity (C L V) or a constant angular velocity (C A V) during the recording / reproducing operation. In addition, the optical receiver 1 is used to read out the groove (Pit) data (phase-change grooves, or organic-color-change (change in reflectance) grooves) on the disc 90. In the case of CD-DA or CD-ROM, the grooves are embossed grooves. In addition, a laser diode 4 forming a laser light source is formed in the receiver 1, an optical sensor 5 for detecting reflected light, an objective lens 2 forming an output end of the laser light, and the laser light is irradiated through the objective lens 2 The optical system (not shown) on the recording surface of the disc and directs the reflected light to the optical sensor 5 ° In addition, a monitoring sensor 22 is also provided, and the monitoring sensor 22 receives the light from the laser diode 4 Part of the output light. In addition, the objective lens 2 can be moved and held in the tracking direction and the focusing direction by the two-axis mechanism 3. In addition, the receiver 1 as a whole can be moved in the disc radial direction by the tandem mechanism 8. In addition, the laser diode 4 of the receiver 1 performs laser light emission driving based on a driving signal (driving current) from the laser driver 18. In addition, the reflected light information from the disc 90 is detected by the optical sensor 5 and is supplied to the RF amplifier 9 as an electrical signal corresponding to the amount of received light. In addition, in the RF amplifier 9, corresponding to a number of light receiving elements, the paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page). Order- ------- Line Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-8- 501094 A7
五、發明說明（6 ) (請先閱讀背面之注意事項再填寫本頁) (光學傳感器5 )的輸出電流而具備電流電壓轉換電路， 矩陣運算/放大電路等’根據矩陣運算處理來產生必要的 信號。例如’產生再生資料的R F信號，伺服控制用的聚 焦誤差信號T E等。 又，從R F放大器9輸出的再生R F信號會被供應至 2値化電路1 1，聚焦誤差信號T E會被供應至伺服器 14° 又，在CD — R，CD — RW的碟片90上，成爲記 錄軌的導件之溝槽（groove)會被事先形成，其該溝槽會根據 表示碟片上的絕對位址的時間資訊被F Μ調變的信號而形 成蛇行（warble)。因此，在記錄動作時，可由溝槽的資訊來 作動跟蹤伺服器，同時可由溝槽的蛇行資訊來取得絕對位 址。又，R F放大器9會藉由矩陣運算處理來抽出蛇行資 訊W Ο B，並予以供應給位址解碼器2 3。 又，位址解碼器2 3會對所供給的蛇行資訊W 0 B進 行解碼，而取得絕對位址資訊，並供應給系統控制器1 〇 〇 經濟部智慧財產局員工消費合作社印製 又，將溝槽資訊注入P L L電路中，而來取得主軸馬 達6的旋轉速度資訊，且與基準速度資訊作比較’而來產 生主軸誤差信號SPE，並予以輸出。 另外，在R F放大器9所取得的再生R F信號會在2 値化電路1 1中被2値化，亦即形成所謂的E F M信號（ 8 - 1 4調變信號），並供應給編碼/解碼部1 2 ° 此外，編碼/解碼部1 2具備：作爲再生時之解碼器 -9- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消費合作社印製 501094 Α7 Β7 五、發明說明（7 ) 的機能部位，及作爲記錄時之編碼器的機能部位。 再生時之解碼處理是進行EFM解碼，C I RC誤差 訂正，C D - R〇Μ解碼等的處理，而取得被轉換成C D 一 R 0Μ格式資料的再生資料。 又，編碼/解碼部1 2也會對自碟片9 0讀出的資料 進行次碼的抽出處理，並將作爲次碼（Q資料）的TO C 或位址資訊等供應給系統控制器1 0。 又，編碼/解碼部1 2是藉由P L L處理來使同步於 E F Μ信號的再生時脈產生，並根據該再生時脈來執行上 述解碼處理，且可由再生時脈來取得主軸馬達6的選轉速 度資訊，然後再與基準速度資訊作比較，而來產生主軸誤 差信號SPE，並予以輸出。 再生時，編碼/解碼部1 2會將上述解碼後的資料儲 存於緩衝記憶體2 0。 又，來自該驅動裝置的再生輸出是在緩衝記憶體2 0 中被緩衝的資料讀出後傳送輸出。 又，介面部1 3會與外部的主電腦8 0連接，並且在 與主電腦8 0之間進行記錄資料，再生資料，或各種指令 等的通信。在此，實際上是採用SCSI或ΑΤΑΡI介 面等。又，再生時，被解碼且儲存於緩衝記憶體2 0中的 再生資料會經由介面部1 3來傳送輸出至主電腦8 0。 又，來自主電腦8 0的讀出指令及寫入指令的其他信 號會經由介面部1 3來供應給系統控制器1 0。 另一方面，記錄時，記錄資料（音頻資料或C D - 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）V. Description of the invention (6) (Please read the precautions on the back before filling this page) (Optical sensor 5) The output current is provided with current-voltage conversion circuit, matrix operation / amplification circuit, etc. ' signal. For example, 'RF signal for reproduction data, focus error signal TE for servo control, etc. are generated. In addition, the reproduced RF signal output from the RF amplifier 9 is supplied to the 2H circuit 1 1, and the focus error signal TE is supplied to the server 14 °. On the disc 90 of the CD-R, CD-RW, A groove that becomes a guide of the recording track is formed in advance, and the groove is formed into a warble according to a signal that the time information indicating the absolute address on the disc is modulated by FM. Therefore, when recording an action, the tracking server can be operated by the information of the groove, and the absolute address can be obtained by the meandering information of the groove. In addition, the RF amplifier 9 extracts the snake information W 0 B by a matrix operation process and supplies it to the address decoder 2 3. In addition, the address decoder 23 decodes the supplied snake information W 0 B, obtains the absolute address information, and supplies the absolute address information to the system controller. The groove information is injected into the PLL circuit to obtain the rotation speed information of the spindle motor 6 and is compared with the reference speed information to generate a spindle error signal SPE and output it. In addition, the regenerative RF signal obtained in the RF amplifier 9 is converted to 2 in the 2 conversion circuit 1 1, that is, a so-called EFM signal (8-14 modulation signal) is formed and supplied to the encoding / decoding unit. 1 2 ° In addition, the encoding / decoding section 12 has: as a decoder at the time of reproduction -9- This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). System 501094 Α7 Β7 Fifth, the functional part of the description of the invention (7), and the functional part of the encoder during recording. The decoding process during reproduction is processing such as EFM decoding, C I RC error correction, CD-ROM decoding, etc., and the reproduction data converted into CD-ROM format data is obtained. In addition, the encoding / decoding unit 12 also performs extraction of the secondary code on the data read from the disc 90, and supplies the TO C or address information as the secondary code (Q data) to the system controller 1 0. In addition, the encoding / decoding unit 12 generates a reproduction clock synchronized with the EF M signal by PLL processing, executes the above-mentioned decoding process based on the reproduction clock, and obtains the selection of the spindle motor 6 from the reproduction clock. The rotation speed information is compared with the reference speed information to generate the spindle error signal SPE and output it. During playback, the encoding / decoding unit 12 stores the decoded data in the buffer memory 20. The playback output from the drive device is output after the data buffered in the buffer memory 20 is read. In addition, the interface part 13 is connected to an external host computer 80 and communicates with the host computer 80 for recording data, reproducing data, and various commands. Here, the SCSI or ATAPI interface is actually used. During reproduction, the reproduction data decoded and stored in the buffer memory 20 will be transmitted to the host computer 80 through the interface portion 13. Further, other signals from the host computer 80's read command and write command are supplied to the system controller 10 via the interface portion 13. On the other hand, when recording, the recording data (audio data or CD-this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm)
線#. (請先閱讀背面之注意事項再填寫本頁) -10- 501094 A7 --- B7 五、發明說明（8 ) R〇Μ資料）雖是從主電腦8 〇傳送而來，但實際上該記 錄資料會從介面部1 3傳送至緩衝記憶體2 〇後被緩衝。 此情況’編碼/解碼部1 2所執行的記錄資料編碼處 理，例如：將C D - R 〇 μ格式資料編碼成c d格式資料 的處理（所被供應的資料爲C D - R〇Μ資料時）， I R C編碼及隔行掃描，附加次解碼，ε F Μ調變等。 又’藉由編碼/解碼部1 2的編碼處理所取得E F Μ 信號會在均衡器2 1實施所謂均質化的處理後，作爲寫入 資料WDAT Α來傳送至雷射驅動器1 8，然後寫入碟片 中。亦即，在雷射驅動器1 8中，根據寫入資料 W D A T A而被調變的雷射驅動脈衝會給予雷射二極體4 ，藉由雷射發光驅動的進行，在碟片9 0中形成對應於寫 入資料W D A T A的槽溝（相變化槽溝或色素變化槽溝） 〇 又’安定化電路1 9是根據監控用傳感器2 2的輸出 來監控雷射輸出功率，且雷射的輸出不會受到溫度等左右 ，而能夠控制成一定値。雷射輸出的目標値是由系統控制 器1 0所賦予，雷射輸出位準是在雷射驅動器1 8中供應 雷射驅動電壓，而使夠形成該目標値。 又，雷射驅動器1 8會將對應於所供給的雷射驅動電 壓的驅動電流予以施加於雷射二極體4中，而使能夠從雷 射二極體4執行所要的雷射功率之雷射輸出。 但，安定化電路1 9的輸出之雷射驅動電壓是經由輸 出切換電路2 4來供應給雷射驅動器1 8。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝i I-----訂---------線· 經濟部智慧財產局員工消費合作社印制衣 -11 - 501094 A7 --—______ B7 五、發明說明（9 ) 又，輸出切換電路2 4會按照雷射功率模式來切換雷 射驅動電壓的位準。亦即，會依照再生時或記錄或消去時 ’以再生用的雷射功率/記錄消去用的雷射功率來切換雷 射二極體4的輸出。 又，輸出切換電路2 4的輸出（電壓値）會經由A/ D轉換器2 5來取入系統控制器1 〇中。 有關安定化電路1 9及輸出切換電路2 4的構成及動 作方面會在往後敘述。 伺服器14是由來自RF放大器9的聚焦誤差信號 F E，跟蹤誤差信號τ E，及來自編碼/解碼部1 2或位 址解碼器的主軸誤差信號S P E等來產生聚焦，跟蹤，串 列及主軸的各種伺服驅動信號，而使伺服動作執行。 亦即，依照聚焦誤差信號F E，跟蹤誤差信號Τ E來 產生聚焦驅動信號F D，跟蹤驅動信號T D，而供應給二 軸驅動器1 6。二軸驅動器1 6會驅動接收器1之二軸機 構3的聚焦線圈，跟蹤線圈。藉此形成由接收器1 ，R F 放大器9，伺服器1 4，二軸驅動器1 6，二軸機構3所 構成的跟蹤伺服迴路及聚焦伺服迴路。 又，按照來自系統控制器1 0的軌道跳躍指令來使跟 蹤伺服迴路呈0 F F狀態，並且對二軸驅動器1 6輸出跳 躍驅動信號，而使軌道跳躍動作執行。 又，伺服器1 4會再對主軸馬達驅動器1 7供給按照 主軸誤差信號S P E而產生的主軸驅動信號。並且，主軸 馬達驅動器1 7會按照主軸驅動信號來使例如3相驅動信 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注咅？事項再填寫本頁) -装-------訂---------線. 經濟部智慧財產局員工消費合作社印製 -12· 501094 A7 —______________. B7 五、發明說明（10) 號施加於主軸馬達6，而執行主軸馬達6的C L V旋轉。 而且，伺服器1 4會按照來自系統控制器1 〇的主軸作動 /制動控制信號，而產生主軸驅動信號，且藉由主軸馬達 驅動器1 7來執行主軸馬達6的啓動，停止，加速，減速 等之動作。 又，伺服器1 4會根據作爲跟蹤誤差信號T E的低域 成份所取得的串列誤差信號，或來自系統控制器1 0的存 取執行控制等來產生串列驅動信號，並予以供應給串列驅 動器1 5。並且，串列驅動器1 5會根據串列驅動信號來 驅動串列機構8。雖未圖示，但實際上串列機構8具有由 保持接收器1的主軸，串列馬達及傳達齒輪等所形成的機 構，串列驅動器1 5會按照串列驅動信號來驅動串列馬達 ，而進行接收器1所需的移動。 以上’伺服系及記錄再生系的各種動作是根據系統控 制器1 0 (藉由微電腦而形成）來進行控制。 又’系統控制器1 0會按照來自主電腦8 0的指令而 執行各種處理。 例如’若從主電腦8 0供給記錄於碟片9 0的讀出指 令或要求資料傳送的讀出指令時，首先會以被指示的位址 作爲目的來進行尋找動作控制。亦即，對伺服器丨4輸出 指令，使以根據尋找指令而指定的位址作爲目標之接收器 1的存取動作執行。 然後，爲了把該被指示之資料區間的資料傳送至主電 腦8 0，而進行必要的動作控制。亦即，進行來自碟片 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注音3事項再填寫本頁) 訂---------線- 經濟部智慧財產局員工消費合作社印製 -13- 501094 A7 B7 五、發明說明（11) 9 0的資料讀出/解碼/緩衝等，而傳送所被要求的資料 〇 (請先閱讀背面之注咅？事項再填寫本頁) 一旦從主電腦8 0輸出寫入指令，則系統控制器1 〇 會首先使接收器1移動至應寫入的位址。然後，藉由編碼 /解碼部1 2來針對從主電腦8 〇傳送來的資料進行編碼 處理，而使形成E F Μ信號。 又，如上述被補償的寫入資料W D A Τ Α會被供給至 雷射驅動器1 8，而被進行記錄。 第2圖所示的構成示只抽出碟片驅動裝置的雷射功率 控制系。 在接收器1內，來自雷射二極體4的雷射光的一部份 會藉由監控用傳感器2 2而檢測出，且該檢測輸出會供應 給安定化電路1 9。 在此，安定化電路19是由放大器A1〜A5，阻抗Line #. (Please read the precautions on the back before filling in this page) -10- 501094 A7 --- B7 V. Description of the invention (8) ROM information) Although it was transmitted from the host computer 80, the actual The recorded data will be transferred from the mesial surface 13 to the buffer memory 20 and then buffered. In this case, the recording data encoding processing performed by the encoding / decoding unit 12 is, for example, processing for encoding CD-R 0μ format data into cd format data (when the supplied data is CD-ROM data), IRC encoding and interlaced scanning, additional sub-decoding, ε F M modulation, etc. Also, the EF M signal obtained by the encoding processing of the encoding / decoding unit 12 will be subjected to the so-called homogenization process at the equalizer 21, and then transmitted to the laser driver 18 as write data WDAT Α, and then written. Disc. That is, in the laser driver 18, the laser driving pulse modulated according to the written data WDATA will be given to the laser diode 4, and it will be formed in the disc 90 by the laser light emitting drive. Corresponds to the groove (phase change groove or pigment change groove) in which data WDATA is written. The stabilization circuit 19 monitors the laser output power based on the output of the monitoring sensor 22, and the laser output does not change. It is controlled by temperature, etc. and can be controlled to a certain level. The target 値 of the laser output is given by the system controller 10, and the laser output level is to supply the laser driving voltage in the laser driver 18 so that the target 値 can be formed. In addition, the laser driver 18 applies a driving current corresponding to the supplied laser driving voltage to the laser diode 4, so that a laser of a desired laser power can be executed from the laser diode 4. Shoot output. However, the laser driving voltage of the output of the stabilization circuit 19 is supplied to the laser driver 18 via the output switching circuit 24. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) Install i ----- Order --------- Line · Printed clothing by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives -11-501094 A7 ---______ B7 V. Description of the Invention (9) In addition, the output switching circuit 24 will switch the laser driving voltage according to the laser power mode. Level. That is, the output of the laser diode 4 is switched in accordance with the laser power for reproduction / laser power for recording and erasure at the time of reproduction or recording or erasure. The output (voltage 値) of the output switching circuit 24 is taken into the system controller 10 through the A / D converter 25. The configuration and operation of the stabilization circuit 19 and the output switching circuit 24 will be described later. The servo 14 generates focus, tracking, tandem, and spindle from the focus error signal FE, tracking error signal τ E from the RF amplifier 9, and the spindle error signal SPE from the encoder / decoder 12 or the address decoder. Various servo drive signals to make servo action. That is, the focus drive signal F D and the tracking drive signal T D are generated in accordance with the focus error signal F E and the tracking error signal TE and supplied to the two-axis driver 16. The two-axis driver 16 drives the focus coil and the tracking coil of the two-axis mechanism 3 of the receiver 1. In this way, a tracking servo loop and a focus servo loop composed of a receiver 1, an RF amplifier 9, a servo 14, a two-axis driver 16, and a two-axis mechanism 3 are formed. In addition, according to the track jump command from the system controller 10, the tracking servo loop is brought to the 0 F F state, and a jump drive signal is output to the two-axis driver 16 to execute the track jump operation. In addition, the servo 14 supplies the spindle motor driver 17 with a spindle drive signal generated in accordance with the spindle error signal SPE. In addition, the spindle motor driver 17 will use the spindle drive signal to make, for example, a 3-phase drive letter paper size applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please read the note on the back first? Matters to fill in (This page)-Install ------- Order --------- line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -12 · 501094 A7 —______________. B7 V. Description of Invention (10) No. is applied to the spindle motor 6 and CLV rotation of the spindle motor 6 is performed. In addition, the servo 14 generates a spindle driving signal in accordance with the spindle actuation / braking control signal from the system controller 10, and executes the start, stop, acceleration, and deceleration of the spindle motor 6 by the spindle motor driver 17. Action. In addition, the server 14 generates a serial drive signal based on the serial error signal obtained as the low-domain component of the tracking error signal TE or the access execution control from the system controller 10, and supplies it to the serial drive. Column drive 1 5. The tandem driver 15 drives the tandem mechanism 8 based on the tandem drive signal. Although not shown, the tandem mechanism 8 actually includes a mechanism that holds the main shaft of the receiver 1, a tandem motor, and a transmission gear. The tandem driver 15 drives the tandem motor according to the tandem drive signal. Instead, the required movement of the receiver 1 is performed. The above-mentioned various operations of the servo system and the recording / reproduction system are controlled by the system controller 10 (formed by a microcomputer). The system controller 10 executes various processes in accordance with instructions from the host computer 80. For example, when a read command recorded on the disc 90 or a read command requiring data transfer is supplied from the host computer 80, the seek operation control is first performed with the indicated address as the purpose. That is, a command is output to the server 4 to execute the access operation of the receiver 1 with the address specified by the seek command as a target. Then, in order to transmit the data of the instructed data interval to the host computer 80, necessary motion control is performed. That is, the paper size from the disc applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please read the note 3 on the back before filling this page) Order --------- -Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-13- 501094 A7 B7 V. Description of the invention (11) Data reading / decoding / buffering of 90, etc., and transmitting the required data (please read the back first) (Note? Please fill in this page again.) Once the write command is output from the host computer 80, the system controller 10 will first move the receiver 1 to the address to be written. Then, the encoding / decoding unit 12 performs encoding processing on the data transmitted from the host computer 80 to form an EFM signal. In addition, the written data W D A T A which is compensated as described above is supplied to the laser driver 18 and is recorded. The structure shown in Fig. 2 shows a laser power control system that only extracts the disc drive. In the receiver 1, a part of the laser light from the laser diode 4 is detected by the monitoring sensor 22, and the detection output is supplied to the stabilization circuit 19. Here, the stabilization circuit 19 is composed of amplifiers A1 to A5, impedance
Rl 1〜R13，電容器C，開關SW1 ，SW2所構成 〇 經濟部智慧財產局員工消費合作社印製 又，監控用傳感器2 2的檢測輸出會在放大器A 1及 阻抗R 1 1的部位被放大後，供應給放大器A 2，A 3， 且分別以預定的增益而放大。 接著，由開關S W 1選擇後，經放大器A 4來供應給 放大器A 5。 對放大器A 5而言，根據系統控制器1 0而設定的雷 射功率的目標値L P a ，L P b會經由開關S W 2的選擇 而供給。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -14- 經濟部智慧財產局員工消費合作社印製 501094 A7 B7____ 五、發明說明（12) 在此，目標値L P a會被設定成再生用雷射功率之目 標値，目標値L P b會被設定成消去（及記錄）用雷射功 率之目標値。 就放大器A5而言，來自放大器A4的輸出，亦即藉 由監控用傳感器2 2而檢測出之相當於現在雷射功率的信 號與目標値L P a或L P b的差分中賦予預定的增益而輸 出。 該放大器A 5的輸出會形成雷射驅動信號，且經由輸 出切換電路2 4來供應給雷射驅動器1 8。 亦即，安定化電路1 9 (所謂的反餽迴路電路）會以 來自目標値的誤差作爲雷射驅動信號而輸出，藉此使具有 保持一定的雷射功率之功能。 又，輸出切換電路2 4是由可變阻抗VR 1及開關 S W 3所構成。並且，將可變阻抗V R 1的分壓値設定爲 R2/CR1+R2)。 又，可變阻抗V R 1的分壓値，開關S W 3及上述開 關S W 1，S W 2是根據系統控制器1 0的控制來進行切 換。 以下，根據此類的雷射功率控制系來說明對應於雷射 功率模式的雷射功率之切換動作。亦即，再生用雷射功率 (以下亦稱爲讀取功率）與消去用雷射功率（以下亦稱爲 消去功率）的切換動作。並且，使消去用雷射功率與記錄 用雷射功率形成相同。 在此，爲了實現本實施例之雷射功率切換動作’首先 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注音3事項再填寫本頁) -裝--------訂---------線· -15- 501094 A7 B7 五、發明說明（13) (請先閱讀背面之注咅？事項再填寫本頁) 輸出切換電路2 4之可變阻抗VR 1的分壓値必須事先適 當地予以設定。因此，會在該碟片驅動裝置的製造過程的 最終調整階段進行可變阻抗V R 1的設定處理。 首先，針對該設定處理加以說明。 第3圖是表示從雷射二極體4輸出的讀出功率/消去 功率與供給至雷射驅動器1 8的雷射驅動電壓（=輸出切 換電路2 4的輸出電壓）之特性圖。 若將消去功率P e輸出時的雷射驅動電壓設定爲V e ，以及將讀出功率P r輸出時的雷射驅動電壓設定爲V r ，則在上述第2圖的電路形成閉路後輸出讀出功率P r / 消去功率P e時，理所當然作爲輸出切換電路2 4的輸出 電壓之雷射驅動電壓必須形成V r，V e。 就本實施例而言，該雷射驅動電壓V r ，V e可藉由 輸出切換電路2 4之開關S W 3的切換而取得，且以下述 方式來設定可變阻抗V R 1的分壓値，而使能夠藉由開關 S W 3的切換來正確地取得雷射驅動電壓V r，V e。 經濟部智慧財產局員工消費合作社印製 第4圖是表示該設定程序。在此，該設定處理雖是針 對藉由系統控制器1 0的控制而執行者加以說明，但因爲 是屬於工廠出貨前的處理，所以亦可連接外部的專用調整 裝置來進行以下所述之設定處理控制。 首先，就步驟F 1 0 1而言，系統控制器1 〇會使輸 出切換電路2 4的開關連接於d端子。 接者，在步驟F 1 0 2中，會使安定化電路1 9的開 關SW1，SW2連接於b端子。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -16- 501094 A7 ____ B7 _ 五、發明說明（1句 此刻，目標値LPb的値，及放大器A3的增益會事 先設定成供以取得預定消去功率的値。 (請先閱讀背面之注意事項再填寫本頁) 其次，就步驟F 1 〇 3而言，系統控制器1 〇會在使 第2圖的電路形成閉路狀態下，執行來自雷射二極體4的 消去功率P e之雷射輸出。 此刻，來自雷射二極體4的雷射輸出位準會在監控用 傳感器監控用傳感器2 2被檢測出，且經由放大器A 1， A 3，A 4來供應給放大器A 5。又，目標値L P b的差 分（電壓）會以雷射驅動信號來從安定化電路1 9輸出。 該雷射驅動信號會因爲開關S W 3被連接於d端子，所以 不會依可變電壓V R 1而被分壓，作爲雷射驅動信號（從 安定化電路1 9輸出）的電壓値會維持原狀而供應給雷射 驅動器1 8。. 因此，來自雷射二極體4的雷射輸出位準可利用反餽 迴路系的機能來安定地形成消去功率P e。 經濟部智慧財產局員工消費合作社印製 在此狀態下，系統控制器1 0會經由A / D轉換器 2 5來取入輸出切換電路2 4的輸出之雷射驅動信號的電 壓値，並記憶爲V e値。 又，如此的動作是利用CD - R，CD — RW等碟片 9 0的試寫領域（功率校準區域）來進行。 其次，系統控制器1 0在步驟F 1 〇 4中會使輸出切 換電路2 4的開關連接於c端子。並且，暫時設定可變阻 抗VR1的分壓値（R2/(R1+R2))。 接著，在步驟F 1 〇 5中，使安定化電路1 9的開關 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -17- 501094 A7 一— B7 五、發明說明（15) SW1，SW2連接於a端子。 此刻，目標値L P a的値，及放大器A 2的增益會事 先設定成供以取得預定讀出功率的値。 其次，就步驟F 1 〇 6而言，與上述同樣的’系統控 制器1 0會在使第2圖的電路形成閉路狀態下’執行來自 雷射二極體4的讀出功率P r之雷射輸出。 此刻，來自雷射二極體4的雷射輸出位準會在監控用 傳感器監控用傳感器2 2被檢測出，且經由放大器A 1 ’ A2，A4來供應給放大器A5。又，目標値LP a的差 分（電壓）會以雷射驅動信號來從安定化電路1 9輸出。 該雷射驅動信號會因爲開關S W 3被連接於c端子，所以 會根據可變電壓V R 1而被分壓，而於此狀態下供應給雷 射驅動器1 8。 因此，來自雷射二極體4的雷射輸出位準可利用反餽 迴路系的機能來安定地形成讀出功率P e。 在此狀態下，系統控制器1 0會經由A / D轉換器 2 5來取入輸出切換電路2 4的輸出之雷射驅動信號的電 壓値，並記憶爲V r値。 又，如此的動作並非只限於碟片9 0的試寫領域（功 率校準區域），任何區域皆可利用。 接著，在步驟F 1 0 7中，系統控制器1 〇可由步驟 F 1 0 3及F 1 〇 6所測定的V e値及V r値來算出其比 (V r / V e )。然後，再設定可變阻抗VRi的分壓値 ，而使可變阻抗VR1的分壓値（R2 / (R1+R2) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) -裝 -------1 訂·ί!! 線· 經濟部智慧財產局員工消費合作社印製 -18· 經濟部智慧財產局員工消費合作社印製 501094 A7 B7 五、發明說明（16) )能夠形成Vr/Ve = R2/(R1+R2)的關係。 藉由以上的程序來完成可變阻抗V R 1的分壓値設定 〇 又，就步驟F 1 0 7而言，在輸出讀出功率p r的模 式中，亦可設定可變阻抗VR 1的分壓値，而使安定化電 路1 9的輸出（輸出切換電路2 4的輸入）能夠形成V e 値。 藉由以上的設定處理，即使雷射功率模式被形成消去 功率模式或讀出功率模式，安定化電路1 9的輸出也不會 有所變動，並且在消去模式中，安定化電路1 9的輸出會 維持原狀供應給雷射驅動器1 8，而且在讀出功率模式中 ，安定化電路1 9的輸出會形成被分壓（在可變阻抗 VR1下，以分壓値R2 / (R1+R2)進行分壓）的 電壓信號，然後供應給雷射驅動器1 8。 實際上在對CD - RW的碟片9 〇進行記錄再生時， 如第5圖所示，會屢次發生由讀出功率模式切換成消去功 率模式，或由消去功率模式切換成讀出功率模式。 例如，在進行資料記錄時’是藉由讀出功率模式來進 行位址的讀出’然後在確認位址後馬上切換成消去（及寫 入）功率模式。亦即’必須要瞬間切換雷射功率。 在本實施例中’如上述，藉由可變阻抗VR 1的分壓 値設定’在讀出功率模式與消去功率模式之間切換時，只 要進行開關SW 3的切換即可。 亦即’在消去功率模式時’只要開關s w 3連接於d 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公董]-- -19 - (請先閱讀背面之注咅？事項再填寫本頁) _ 裝-------訂--------線. 501094 A7 _______ B7 五、發明說明（17) 端子即可，在讀出功率模式時，只要開關SW3連接於c 端子即可。 另一方面，安定化電路1 9只要經常使開關S W 1 ， S W 2連接於b端子，而使消去功率模式的電壓値的雷射 驅動信號能夠輸出即可。亦即，在安定化電路1 9中不需 要按照雷射功率模式的變化來進行切換動作。 因此，本實施例中，在雷射功率模式切換時，安定化 電路1 9的安定化不會變慢（因爲輸出不會變動，所以不 會受到安定化電路1 9中所含的電容C影響而變慢），可 瞬間且適當地切換雷射功率。 又，由於安定化電路1 9不需要對應於複數個雷射功 率模式而設置複數個，因此電路構成可以大幅度地簡略化 又，雖雷射二極體4對雷射輸出而言具有較大的溫度 變動，但無論是何種的雷射功率模式中，皆可利用安定化 電路1 9來形成雷射功率被監視的狀態，因此而能夠實現 安定的雷射輸出。 經濟部智慧財產局員工消費合作社印製 先 閱 讀 背 面 之 注 意* 事 項 t·· ί裝 頁 I ^ I I I I I I 訂 線 又，A/D轉換器2 5及第4圖所示之系統控制器 1 0的設定處理機能，在工廠出貨前的調整過程中是不可 欠缺的，因此並不一定要在本實施例之碟片驅動裝置內搭 載。 例如，在調整過程中，只要設置供以取出輸出切換電 路2 4的輸出電壓之外部端子，而使調整裝置能夠從該外 部端子檢測出V e値及V r値，便不需要a / D轉換器 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -20- 501094 A7 ____ B7 五、發明說明（1S) 2 5° 此刻，只要按照來自調整裝置的指示，而進行第4圖 的程序動作，其結果便可適當地調整可變電壓VR 1的分 壓値。 此外，輸出切換電路2 4亦有其他各種的構成。 其中，如第6圖所示，亦可由阻抗R21〜R28， 開關SW1 1〜SW18，阻抗R3 1〜R38 ，放大器 A 1 〇及阻抗R 4 0所構成。亦即，形成D / A轉換器之 類的構成，而使能夠將安定化電路1 9的輸出供應給輸入 端子I N。 此情況，例如系統控制器1 0會根據控制信號B C來 分別對開關S W 1 1〜S W 1 8進行〇N / 0 F F控制。 如此一來，可藉由按照控制信號B C 4而選擇的開關 組合來從輸出端子0 U T取得安定化電路1 9的雷射驅動 信號電壓，或阻抗分壓的雷射驅動信號。 此情況，第4圖之設定處理，只要以能夠取得對應於 V e値與V r値比（V r / V e )的分壓輸出之方式來判 別開關S W 1 1〜S W 1 8的〇N /〇F F組合即可。 以上實施形態雖是針對碟片驅動裝置及其搭載的雷射 驅動裝置（第2圖的雷射功率控制系）加以說明，但本發 明並非只限定於此，例如有關電路構成及動作機能等亦可 實施其他各種的變形。 又，以上本發明並非只限定對應於CD — R，CD — RW等C D方式的碟片之碟片驅動裝置，亦可適用於 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝--------訂---—-----線· 經濟部智慧財產局員工消費合作社印製 -21 - 501094 A7 B7 五、發明說明（19) D V D方式的碟片等之其他碟片驅動裝置及其雷射輸出裝 置。 【發明之效果】 如以上所述，本發明中，雷射功率切換機構會進行對 應於複數個雷射功率模式的位準切換，而把來自安定化機 構（該安定化機構會輸出雷射驅動信號，而使雷射輸出機 構所輸出的雷射功率能夠安定化）的雷射驅動信號供應給 雷射驅動機構，藉此使能夠由雷射輸出機構來執行對應於 各雷射功率模式之雷射功率的雷射光輸出。 如此一來，在雷射功率的切換時不需要切換安定化電 路，且安定化電路只要一系統設置即可，因此電路構成可 以非常地簡略化。在此，所謂可不按照雷射功率模式來切 換安定化電路，是指不依安定化電路的整定時間或放電狀 況來切換成適當的雷射功率，因此具有能夠實現高速且適 當的雷射功率切換之效果。 又，例如上述輸出切換電路2 4之類的雷射功率切換 機構是使用對應於各雷射功率模式的雷射功率來設定分壓 比之阻抗分壓電路，而使能夠針對作爲來自安定化機構的 雷射驅動信號的電壓値進行對應於各雷射功率模式的位準 切換，藉此將能夠以非常簡單的電路構成來實現雷射功率 的切換動作。 【圖面之簡單的說明】 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝--------訂---------線· 經濟部智慧財產局員工消費合作社印製 -22· 501094 A7 _ B7 _五、發明說明（20) 第1圖是表示本發明之實施形態的驅動裝置的方塊圖 〇 第2圖是表示實施形態之雷射功率控制系的方塊圖。 第3圖是表示雷射功率與雷射驅動電壓的關係說明圖 〇 第4圖是表示實施形態之設定處理的流程圖。 第5圖是表示實施形態之雷射功率模式切換的說明圖 〇 第6圖是表示實施形態之其他輸出分割電路的方塊圖 請 先 閱 讀 背 面 意 事 項 再 頁 經濟部智慧財產局員工消費合作社印製 【圖號之說明】 1 :接收器 2 :對物透鏡 3 :二軸機構 4 :雷射二極體 9 : R F放大器 1 0 :系統控制器 1 2 :編碼/解碼部 1 3 :介面部 1 4 :伺服器 1 6 :二軸驅動器 1 9 :安定化電路 2 0 :緩衝記憶體 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -23 501094 A7 _B7 五、發明說明（21) 22:監控用傳感器 2 4 :輸出切換器 器 換 轉 D / A 5 2 (請先閱讀背面之注意事項再填寫本頁) 訂----------丨-線· 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -24-Rl 1 ~ R13, capacitor C, switches SW1, SW2. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The detection output of the monitoring sensor 2 2 will be amplified at the amplifier A 1 and the impedance R 1 1 , Is supplied to the amplifiers A 2 and A 3, and is amplified with a predetermined gain, respectively. Next, after being selected by the switch SW1, it is supplied to the amplifier A5 via the amplifier A4. For the amplifier A5, the targets 値 L P a and L P b of the laser power set according to the system controller 10 are supplied through the selection of the switch SW 2. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -14- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 501094 A7 B7____ 5. Description of the invention (12) Here, the target 値 LP a will The target 値 is set to the target laser power for regeneration, and the target 値 LP b is set to the target 値 for erasing (and recording) the laser power. As for the amplifier A5, the output from the amplifier A4, that is, a predetermined gain is added to the difference between the signal equivalent to the current laser power detected by the monitoring sensor 22 and the target 値 LP a or LP b, and the output is output. . The output of this amplifier A 5 forms a laser driving signal, and is supplied to the laser driver 18 via an output switching circuit 24. That is, the stabilization circuit 19 (a so-called feedback loop circuit) outputs an error from the target 値 as a laser driving signal, thereby having a function of maintaining a certain laser power. The output switching circuit 24 is composed of a variable impedance VR 1 and a switch SW 3. Further, the divided voltage 値 of the variable impedance V R 1 is set to R2 / CR1 + R2). In addition, the divided voltage 値 of the variable impedance V R 1, the switches SW 3 and the switches SW 1 and SW 2 are switched according to the control of the system controller 10. Hereinafter, the switching operation of the laser power corresponding to the laser power mode will be described based on such a laser power control system. That is, the switching operation of the laser power for regeneration (hereinafter also referred to as read power) and the laser power for erasing (hereinafter also referred to as erasing power). In addition, the erasing laser power and the recording laser power are made the same. Here, in order to realize the laser power switching action of this embodiment, 'First of all, this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the note 3 on the back before filling this page)- -------- Order --------- line · -15- 501094 A7 B7 V. Description of the invention (13) (Please read the note on the back? Matters before filling this page) Output The divided voltage 値 of the variable impedance VR 1 of the switching circuit 24 must be appropriately set in advance. Therefore, the setting process of the variable impedance V R 1 is performed at the final adjustment stage of the manufacturing process of the disc drive. First, the setting process will be described. Fig. 3 is a characteristic diagram showing the reading power / erasing power output from the laser diode 4 and the laser driving voltage (= output voltage of the output switching circuit 24) supplied to the laser driver 18. If the laser driving voltage when the power Pe is output is set to V e, and the laser driving voltage when the read power P r is output is set to V r, the readout is output after the circuit in FIG. 2 is closed. When the output power P r / eliminates the power P e, the laser driving voltage, which is taken as an output voltage of the output switching circuit 24, must form V r, V e as a matter of course. In this embodiment, the laser driving voltage V r, V e can be obtained by switching the switch SW 3 of the output switching circuit 24, and the voltage division 値 of the variable impedance VR 1 is set in the following manner, It is thus possible to accurately obtain the laser driving voltages V r and V e by switching the switch SW 3. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Figure 4 shows the setting procedure. Here, although the setting process is described for the performer under the control of the system controller 10, it is a process before shipment from the factory, so it can be connected to an external dedicated adjustment device to perform the following. Set processing control. First, as for step F 101, the system controller 10 causes the switch of the output switching circuit 24 to be connected to the d terminal. Then, in step F 102, the switches SW1 and SW2 of the stabilization circuit 19 are connected to the b terminal. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -16- 501094 A7 ____ B7 _ 5. Description of the invention (1 sentence at this moment, the target 値 LPb 値 and the gain of the amplifier A3 will be set in advance (Please read the notes on the back before filling this page) Secondly, as for step F 1 〇3, the system controller 1 〇 will make the circuit of Figure 2 closed circuit Then, the laser output of the erasing power Pe from the laser diode 4 is performed. At this moment, the laser output level from the laser diode 4 is detected by the monitoring sensor monitoring sensor 22, and The amplifier A 5 is supplied via the amplifiers A 1, A 3, and A 4. The difference (voltage) of the target 値 LP b is output from the stabilization circuit 19 as a laser driving signal. The laser driving signal is due to The switch SW 3 is connected to the d terminal, so it is not divided according to the variable voltage VR 1. The voltage 値 as a laser driving signal (output from the stabilization circuit 19) is maintained as it is and supplied to the laser driver 1 8: So, from the laser diode 4 The laser output level can use the function of the feedback loop system to stably form the elimination power Pe. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs In this state, the system controller 10 will pass the A / D converter 2 5 The voltage 値 of the laser driving signal output from the output switching circuit 24 is taken and stored as V e 値. Moreover, such an operation is to use a CD-R, CD-RW, and other discs of a test writing area 90 ( Power calibration area). Secondly, the system controller 10 causes the switch of the output switching circuit 24 to be connected to the c terminal in step F 1 04, and temporarily sets the divided voltage 阻抗 (R2 / (R1 + R2)). Next, in step F1 05, the switch of the stabilization circuit 19 is used. The paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) -17- 501094 A7. — B7 V. Description of the invention (15) SW1 and SW2 are connected to the a terminal. At this moment, the target 値 LP a 値 and the gain of the amplifier A 2 will be set in advance to obtain a predetermined read power 値. Next, the steps F 1 〇6, the same as the above 'System Controller 1 0 In the closed circuit state of the circuit of FIG. 2, the laser output of the read power Pr from the laser diode 4 is performed. At this moment, the laser output level from the laser diode 4 is being used for monitoring. The sensor for monitoring the sensor 2 2 is detected and supplied to the amplifier A5 via the amplifiers A 1 ′ A2 and A4. The difference (voltage) of the target 値 LP a is output from the stabilization circuit 19 by a laser driving signal. The laser driving signal is divided by the variable voltage VR 1 because the switch SW 3 is connected to the c terminal, and is supplied to the laser driver 18 in this state. Therefore, the laser output level from the laser diode 4 can stably form the readout power Pe using the function of the feedback loop system. In this state, the system controller 10 takes in the voltage 値 of the laser driving signal output from the output switching circuit 24 through the A / D converter 25 and stores it as V r 値. In addition, such an operation is not limited to the test writing area (power calibration area) of the disc 90, and any area can be used. Next, in step F 107, the system controller 10 can calculate the ratio (V r / V e) from V e 値 and V r 値 measured in steps F 103 and F 106. Then, set the voltage divider 可变 of the variable impedance VRi to make the voltage divider 可变 of the variable impedance VR1 (R2 / (R1 + R2). This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). (Please read the precautions on the back before filling this page) -Packing --------- 1 Order · ί !! Line · Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economics-18 · Consumption of Employees by the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the cooperative 501094 A7 B7 V. Description of the invention (16)) can form the relationship of Vr / Ve = R2 / (R1 + R2). The above procedure is used to complete the setting of the voltage division of the variable impedance VR1. Also, as for step F 107, the voltage division of the variable impedance VR1 can also be set in the mode of output read power pr.値, so that the output of the stabilization circuit 19 (the input of the output switching circuit 24) can form V e 値. With the above setting processing, even if the laser power mode is formed in the erase power mode or the read power mode, the output of the stabilization circuit 19 will not change, and in the cancellation mode, the output of the stabilization circuit 19 It will be supplied to the laser driver 18 as it is, and in the readout power mode, the output of the stabilizing circuit 19 will be divided. (Under the variable impedance VR1, the divided voltage 値 R2 / (R1 + R2) The voltage signal is divided and then supplied to the laser driver 18. Actually, when recording / reproducing a CD-RW disc 90, as shown in FIG. 5, switching from the read power mode to the cancel power mode, or from the erase power mode to the read power mode occurs repeatedly. For example, when data is recorded, 'the address is read out by the read power mode' and then switched to the erase (and write) power mode immediately after the address is confirmed. That is, 'the laser power must be switched instantaneously. In the present embodiment, as described above, when switching between the reading power mode and the erasing power mode by the divided voltage 値 setting of the variable impedance VR 1, only the switch SW 3 needs to be switched. That is, 'when the power mode is eliminated', as long as the switch sw 3 is connected to d, this paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public directors)--19-(Please read the note on the back first? Matters (Fill in this page again) _ Install ------- order -------- line. 501094 A7 _______ B7 V. Description of the invention (17) The terminal can be used. When reading the power mode, just switch SW3 It may be connected to the c terminal. On the other hand, the stabilization circuit 19 needs to always connect the switches SW 1 and SW 2 to the b terminal so that the laser driving signal that eliminates the voltage 値 in the power mode can be output. That is, In the stabilization circuit 19, it is not necessary to perform a switching operation according to the change of the laser power mode. Therefore, in this embodiment, when the laser power mode is switched, the stabilization of the stabilization circuit 19 will not be slowed down ( Because the output does not change, it is not affected by the capacitance C included in the stabilization circuit 19 (slow), and the laser power can be switched instantly and appropriately. Also, since the stabilization circuit 19 does not need to correspond to a complex number Multiple laser power modes, so the circuit configuration can be It is greatly simplified and simplified. Although the laser diode 4 has a large temperature variation for the laser output, the stabilization circuit 19 can be used to form a laser regardless of the laser power mode. The state of the radio power is monitored, so that stable laser output can be achieved. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, please read the notice on the back first * Matters t ·· ί Page I ^ IIIIII Ordering, A / D The setting processing function of the converter 25 and the system controller 10 shown in FIG. 4 is indispensable during the adjustment process before shipment from the factory, so it is not necessarily in the disc drive device of this embodiment. For example, in the adjustment process, as long as an external terminal is provided for taking out the output voltage of the output switching circuit 24, so that the adjustment device can detect V e 値 and V r 値 from the external terminal, a / D converter This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -20- 501094 A7 ____ B7 V. Description of the invention (1S) 2 5 ° At this moment, as long as you follow the instructions from the adjustment device, and The program operation of FIG. 4 is performed, and as a result, the divided voltage 値 of the variable voltage VR 1 can be appropriately adjusted. In addition, the output switching circuit 2 4 also has various other structures. Among them, as shown in FIG. The impedances R21 to R28, the switches SW1 1 to SW18, the impedances R3 1 to R38, the amplifier A 1 0, and the impedance R 4 0 are formed. That is, a configuration such as a D / A converter is formed to enable a stabilization circuit. The output of 19 is supplied to the input terminal IN. In this case, for example, the system controller 10 performs ON / 0 F F control on the switches S W 1 1 to S W 18 respectively according to the control signal B C. In this way, the laser drive signal voltage of the stabilizing circuit 19 or the laser drive signal of the impedance divided voltage can be obtained from the output terminal 0 U T by the switch combination selected according to the control signal B C 4. In this case, the setting processing in FIG. 4 is only required to judge the ON of the switches SW 1 1 to SW 1 8 in such a manner that a divided voltage output corresponding to the ratio V e 値 to V r 値 (V r / V e) can be obtained. / 〇FF combination is sufficient. Although the above embodiment has described the disc drive device and the laser drive device (laser power control system shown in FIG. 2) mounted on it, the present invention is not limited to this. For example, the circuit configuration and operation function are also related. Various other modifications can be implemented. In addition, the present invention is not limited to the disc drive device corresponding to CD discs such as CD-R, CD-RW, etc., and it can also be applied to this paper standard applicable to China National Standard (CNS) A4 (210 X 297) Li) (Please read the precautions on the back before filling out this page) Loading -------- Order ------------ Line · Printed by the Employee Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -21-501094 A7 B7 5. Description of the invention (19) Other disc drive devices such as DVD discs and their laser output devices. [Effects of the Invention] As described above, in the present invention, the laser power switching mechanism performs level switching corresponding to a plurality of laser power modes, and outputs the laser drive from the stabilization mechanism (the stabilization mechanism outputs laser driving). Signal to stabilize the laser power output by the laser output mechanism), the laser drive signal is supplied to the laser drive mechanism, thereby enabling the laser output mechanism to execute the laser corresponding to each laser power mode Laser light output at radio power. In this way, it is not necessary to switch the stabilization circuit when the laser power is switched, and the stabilization circuit only needs to be set up in one system, so the circuit configuration can be very simplified. Here, the so-called stabilizing circuit can be switched without following the laser power mode, which means that the stabilizing circuit can be switched to an appropriate laser power without depending on the setting time or discharge condition of the stabilizing circuit. Therefore, it has a high-speed and appropriate laser power switching function. effect. In addition, for example, the laser power switching mechanism such as the output switching circuit 24 described above is an impedance voltage dividing circuit that uses laser power corresponding to each laser power mode to set a voltage dividing ratio, so that The voltage 値 of the laser driving signal of the mechanism performs level switching corresponding to each laser power mode, whereby the laser power switching operation can be realized with a very simple circuit configuration. [Simplified description of the drawing] This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) --------- Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-22 · 501094 A7 _ B7 _ V. Description of the invention (20) Figure 1 shows the drive device according to the embodiment of the present invention. Block diagram. FIG. 2 is a block diagram showing a laser power control system according to the embodiment. Fig. 3 is an explanatory diagram showing the relationship between laser power and laser driving voltage. Fig. 4 is a flowchart showing a setting process of the embodiment. Figure 5 is an explanatory diagram showing the switching of the laser power mode of the embodiment. Figure 6 is a block diagram showing other output division circuits of the embodiment. Please read the notice on the back before printing on the page printed by the employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. [Description of drawing number] 1: Receiver 2: Object lens 3: Biaxial mechanism 4: Laser diode 9: RF amplifier 1 0: System controller 1 2: Encoding / decoding unit 1 3: Interface surface 1 4: Servo 1 6: Two-axis driver 1 9: Stabilization circuit 2 0: Buffer memory This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) -23 501094 A7 _B7 V. Description of the invention (21) 22: Monitoring sensor 2 4: Output switcher switch D / A 5 2 (Please read the precautions on the back before filling this page) Order ---------- 丨 -line · Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) -24-