200832378 九、發明說明 【發明所屬之技術領域】 本發明係關於碟片裝置之用以判別記錄碟片之信號記 錄面（貪料記錄面）及非信號記錄面之技術，尤其是，係 與對資料記錄面之相反面實施雷射光感光，可判別具有可 記錄可視資訊之可視資訊記錄面（描繪記錄面）之記錄碟 片之資料記錄面及描繪記錄面之技術相關，係與例如可有 φ 效地對應複數種類之記錄碟片之多碟片裝置之技術相關。 【先前技術】 pc (個人電腦）周邊機器之碟片裝置，呈現可對應複 數媒體之傾向，例如，多碟片裝置可以實施所謂CD-ROM 之再生、CD-R/RW之記錄再生、DVD-ROM之再生、DVD-R/lW、DVD + R/Rf、以及DVD-RAM之記錄再生厂多碟片 驅動器係執行以判定裝設之媒體爲目的之碟片判別處理。 • 例如，使照射雷射光時之各種記錄碟片之反射光量之大小 、及光學拾波器之物鏡於上下方向移動之聚焦搜尋動作時 . ’依據從得到來自碟片表面之反射光至得到來自資料記錄 . 面之反射光爲止之計測時間，判別記錄碟片之種類。具體 之判別手法如專利文獻1及2所示。 專利文獻1:日本特開2000-3 1 1 427號公報 專利文獻2:日本特開2005-259252號公報 【發明內容】 -5- 200832378 碟片裝置當中，也有具備雷射標籲印刷機能者。雷射 標籤印刷機能，係於記錄碟片之資料記錄面之背面，對由 雷射感光性塗料所構成之描繪記錄面照射雷射光來描繪標 題或相片等之可視像之機能。以縮短利用雷射標籬印刷之 描繪時間爲目的，而提供具有高感光度之描繪記錄面之記 ' 錄碟片，因爲高感光度之描繪記錄面具有高反射率，故以 反射率之點而言，難以與資料記錄面進行區別。此外， φ DVD系之記錄碟片時，因爲從資料記錄面至碟片表面爲止 之距離、及從描繪記錄面至碟片表面爲止之距離爲大致相 等，聚焦搜尋動作之計測時間時，有時難以區別資料記錄 面及描繪記錄面。如上所示，碟片判別處理之對象若增加 具有描繪記錄面之記錄碟片，以其反射率之點而言，難以 與資料記錄面進行區別，此外，從記錄碟片背面至描繪記 錄面爲止之距離種類也較多7·片判別處理更爲1雜。 本發明之目的，係在提供可以短時間正確地區別裝設 Φ 之記錄碟片之非信號記錄面或描繪記錄面之碟片裝置。本 發明之其他目的，係在提供適合用以執行照射雷射光並在 , 短時間正確地區別記錄碟片之非信號記錄面或描繪記錄面 , 之控制之半導體裝置。 本發明之前述及其他目的、以及新特徵，如本明細書 之記述及附錄圖式所示。 針對本專利申請之發明當中之具代表性者，簡單說明 如下。 亦即，碟片判別處理時，實施聚焦伺服且使光學拾波 -6- 200832378 器於記錄碟片之半徑方向移動時，於一定時間內，依據循 軌誤差信號檢測軌道偏離之有無，若爲無，則判斷成非信 號記錄面。藉由利用循軌誤差信號，可以短時間正確地實 施區別記錄碟片之非信號記錄面之控制。 針對本專利申請之發明當中之具代表性者可得到之效 果，簡單說明如下。 亦即，可以短時間正確地區別裝設於碟片裝置之記錄 碟片之非信號記錄面。 【實施方式】 1、代表之實施形態 首先，針對本專利申請之發明之代表實施形態之槪要 進行說明。代表實施形態之槪要說明中，附有括弧供參照 之圖式之參顕+符號，只是附有該符號之屬成要素之槪念所 包含之物的例示。 • [1]本發明之代表實施形態之碟片裝置（1 )，係從光 學拾波器（4 )對裝設之記錄碟片（2 )照射雷射光來執行 _ 碟片判別處理，依據其判別結果，實施聚焦伺服控制及循 軌伺服控制，而可對前述記錄碟片之信號記錄面（DL)執 行資訊之記錄及再生，且可對前述記錄碟片之非信號記錄 面（VL )照射雷射光而記錄可視資訊。前述碟片判別處理 ，係對前述記錄碟片照射雷射光，執行前述聚焦伺服控制 且不執行前述循軌伺服控制，使拾波器之物鏡（7 )及雷 射光受光面之距離保持一定，同時使拾波器於前述記錄碟 200832378 片之半徑方向移動而產生循軌誤差信號（TER) ’依據循 軌誤差信號，於既定時間內未檢測到軌道偏離時’由主機 介面電路（25)輸出用以表示前述記錄碟片之雷射光受光 面爲信號記錄面以外之判別結果信號（27 )。藉由利用循 軌誤差信號，可以短時間執行正確地區別記錄碟片之非信 號記錄面之控制。因爲由主機介面電路輸出判別結果信號 ，主機裝置可針對判別結果執行適當的處理。 具體之一形態，係於前述碟片判別處理，檢測到前述 記錄碟片之雷射光受光面爲信號記錄面以外時，可執行對 前述記錄碟片之非信號記錄面照射雷射光來記錄可視資訊 之可視資訊記錄動作。 其別形態，係於前述碟片判別處理，循軌誤差信號之 二値化之脈衝（TER_P )之脈衝數於既定時間內爲一定數 it—蒔^ranMi 键I乏號1己ϋΰΑ 外。可以實現利用循軌誤差信號之判定之容易化。更具體 之形態，係更具有實施前述循軌誤差信號之二値化之滯後 比較器（23 )，於前述碟片判別處理，利用滯後比較器所 輸出之脈衝執行前述判別。與單純之二値化相比，可以降 低雜訊之影響。 另外之其他形態，係於前述碟片判別處理，循軌誤差 信號之振幅於既定時間內爲一定水準以下時，判別成記錄 碟片之雷射光照射面爲信號記錄面以外。CPU可以藉由運 算循軌誤差信號之A/D轉換結果來執行判別。 另外之其他形態，係於前述碟片判別處理，循軌誤差 -8 - 200832378 信號之二値化之脈衝之脈衝數於既定時間內爲一定數以下 ’且，循軌誤差信號之振幅於既定時間內爲一定水準以下 時，判別成記錄碟片之雷射光照射面爲信號記錄面以外。 可以明顯提高判別結果之信賴性。 [2]更具體而g，碟片裝置具有：介由物鏡對裝設之記 錄碟片照射雷射光，以光檢測器（8 )實施來自前述記錄 碟片之反射光之光電轉換，藉由第1致動器（9)使前述 Φ 物鏡移至其焦點深度內之光學拾波器；可使前述拾波器於 前述記錄碟片之半徑方向移動之第2致動器（1 1 );依據 前述光檢測器之輸出，產生聚焦誤差信號及循軌誤差信號 之增幅器電路（12);以依據前述聚焦誤差信號使前述物 鏡及前述記錄碟片之雷射光受光面之距離保持一定之方式 ，控制前述第1致動器之聚焦伺服控制電路（1 5 );以依 — 據前菰循軌誤差7言號使前通拾波器追隨前述記廢碟片之磁 軌之方式控制前述第2致動器之循軌伺服電路（1 6 );以 • 及資料處理電路（1 7 );對裝設之前述記錄碟片照射雷射 光執行碟片判別處理，依據其判別結果，對前述記錄碟片 . 之信號記錄面實施資訊之記錄及再生。前述資料處理電路 ，於碟片判別處理中，對前述記錄碟片照射雷射光，利用 前述聚焦伺服控制電路使拾波器之透鏡及前述記錄碟片之 雷射光受光面之距離保持一定’使前述拾波器於前述記錄 碟片之半徑方向移動’依據藉此所形成之循軌誤差信號’ 於既定時間內未檢測到軌道偏離時’產生用以表示前述記 錄碟片之雷射光受光面爲信號記錄面以外之判別結果信號 -9- 200832378 (27 )。藉由利用循軌誤差信號，可以短 區別記錄碟片之非信號記錄面之控制。 [3]依據其他觀點，以對記錄碟片之定 爲目的之伺服控制、及以對記錄碟片之信 訊之記錄及再生爲目的之信號處理所使用 ' 28)，係具有：依據來自雷射光所照射之 光之光電轉換信號，產生聚焦誤差信號及 φ 增幅器（12);依據前述聚焦誤差信號， 前述記錄碟片之雷射光受光面之距離保持 服控制之聚焦伺服控制電路（1 5 );依據 號，實施使具有前述物鏡及雷射光源之光 述記錄碟片之磁軌之伺服控制之循軌伺服 ;執行程式之運算處理裝置（1 7 ):以及 非揮發性記憶體（22 );且―τ前述運算處 記錄碟片照射雷射光，利用前述聚焦伺服 • 器之透鏡及前述記錄碟片之雷射光受光面 下，使前述拾波器於前述記錄碟片之半徑 , 藉此所形成之循軌誤差信號，於既定時間 道偏離時，判定前述記錄碟片之雷射光受 面以外，以得到該判定結果爲條件，實施 之非信號記錄面照射雷射光來記錄可視資 錄動作。藉由利用循軌誤差信號，可以短 區別記錄碟片之非信號記錄面之控制。 其中之一具體形態，係將構成前述增 時間執行正確地 位置照射雷射光 號記錄面實施資 之半導體裝置（ 記錄碟片之反射 循軌誤差信號之 實施以使物鏡及 一定爲目的之伺 前述循軌誤差信 學拾波器追隨前 控制電路（1 6 ) 儲存前述程式之 理裝置，對前述 控制電路使拾波 之距離保持一定 方向移動，依據 內，未檢測到軌 光面爲信號記錄 對前述記錄碟片 訊之可視資訊記 時間執行正確地 幅器、前述聚焦 -10- 200832378 伺服控制電路、前述循軌伺服控制電路、前述運算處理裝 置、以及前述非揮發性記憶體之單晶片或多晶片密封於1 個封裝而構成。 2、實施形態之說明 其次，針對實施形態進一步進行詳細說明。 <<多碟片裝置>> 第1圖係本發明之碟片裝置之一例之多碟片裝置1之 全體構成。該圖所示之多碟片裝置1之再生及記錄對象之 記錄碟片爲 2CD-ROM、CD-R/RW、DVD-ROM、DVD-R/RW、DVD + R/RW、DVD-RAM等，此外，具備對配設於 前述記錄碟片2之資料記錄面之背面之由雷射感光性塗料 所屬成之描繪記藥南照射W射光而描繪可視像之ϊί射標籬 印刷機能。該圖所示之多碟片驅動器1，具備對利用碟片 馬達（DM ) 3進行旋轉之記錄碟片2照射雷射光之光學拾 波器（光拾波器）4。光拾波器4係由：由雷射光源5、電 子束***器6、物鏡7(亦稱爲集光透鏡）、以及光檢測 器8等所構成之光學系；用以使物鏡7移位之機械系之聚 焦致動器（FCA) 9 ;以及循跡致動器（TRA) 10 ;所構成 。聚焦致動器9可以使獲得彈性支持之物鏡5於記錄碟片 之厚度方向移動。循跡致動器10可以使彈性支持之物鏡5 於記錄碟片2之半徑方向（資訊磁軌之橫跨方向）移動。 拾波器4本身可以利用螺紋致動器（ΤΗ A ) Π沿著記錄碟 200832378 片2之半徑方向往復移動。 前述光拾波器4內之雷射光源5具有：圖上未標示之 雷射二極體、以使雷射二極體發光爲目的之驅動電路、以 及以將雷射二極體所射出之發散性雷射光修正成平行光爲 目的之圖上未標不之準直透鏡等，而射出平行雷射光。雷 射光係利用前述電子束***器6而使光路折曲，並入射至 物鏡7。物鏡7，使雷射光之光束收斂於記錄碟片2之資 料記錄面或描繪記錄面。 記錄碟片2所反射之光，經由物鏡7及電子束***器 6射入光檢測器8。光檢測器8，受取來自記錄碟片1上之 反射光之強度變化，將經過光電轉換之信號供應給高頻增 幅器（RF A ) 1 2。高頻增幅器1 2，對光檢測器8之輸出信 號實施電流電壓轉換後，進行加減算處理，產生對應物鏡 5及資訊磁軌之偏離量而I變信號水準及極性乏循軌誤差 信號TER。此外，前述高頻增幅器12，利用光檢測器8之 輸出信號，產生對應雷射光束之散焦量（至焦點之偏離量 )而改變信號水準之聚焦誤差信號FER、及對應回光之偏200832378 IX. Description of the Invention [Technical Field] The present invention relates to a technique for discriminating a signal recording surface (a greedy recording surface) and a non-signal recording surface of a disc device, in particular, a pair and a pair The laser light sensitization is performed on the opposite side of the data recording surface, and the data recording surface of the recording disc having the visual information recording surface (drawing the recording surface) on which the visual information can be recorded is related to the technical description of the recording surface, and may be, for example, φ It is technically relevant to the multi-disc device of a plurality of types of recording discs. [Prior Art] A disc device of a PC (Personal Computer) peripheral device exhibits a tendency to correspond to a plurality of media. For example, a multi-disc device can perform reproduction of a so-called CD-ROM, recording and reproduction of a CD-R/RW, and DVD- The ROM reproduction, DVD-R/lW, DVD+R/Rf, and DVD-RAM recording and reproducing factory multi-disc drive perform disc discrimination processing for the purpose of judging the installed media. • For example, the amount of reflected light of various recording discs when irradiating laser light, and the focus search motion of the objective lens of the optical pickup moving in the up and down direction. 'According to the reflected light from the surface of the disc to obtain the Data record. The measurement time until the reflected light of the surface determines the type of the recorded disc. The specific discrimination method is as shown in Patent Documents 1 and 2. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2000-259252 (Patent Document 2) JP-A-2005-259252 SUMMARY OF THE INVENTION - 5 - 200832378 Among the disc devices, there are also those having a laser mark printing function. The laser label printing machine is capable of drawing a visible image of a title or a photograph by irradiating laser light onto a recording surface composed of a laser photosensitive paint on the back side of the data recording surface of the recording disc. For the purpose of shortening the drawing time of printing with a laser fence, a recording disc having a high-sensitivity recording surface is provided, because the high-sensitivity recording surface has a high reflectance, so the point of reflectance In terms of it, it is difficult to distinguish it from the data recording surface. In addition, when recording a disc of the φ DVD system, the distance from the data recording surface to the surface of the disc and the distance from the recording surface to the surface of the disc are substantially equal, and sometimes the measurement time of the focus search operation is sometimes It is difficult to distinguish the data recording surface from the recording surface. As described above, if the recording disc having the recording surface is added to the object of the disc discrimination processing, it is difficult to distinguish it from the data recording surface at the point of the reflectance, and from the back of the recording disc to the recording surface. There are also a large number of types of distances. SUMMARY OF THE INVENTION An object of the present invention is to provide a disc device which can accurately distinguish a non-signal recording surface or a recording surface on which a recording disc of Φ is mounted in a short time. Another object of the present invention is to provide a semiconductor device suitable for controlling the irradiation of laser light and correcting the non-signal recording surface or the recording surface of the recording disc in a short time. The above and other objects and novel features of the present invention are set forth in the description of the appended claims. A representative of the invention of the present patent application is briefly described below. In other words, when the disc discrimination processing is performed, when the focus servo is applied and the optical pickup-6-200832378 is moved in the radial direction of the recording disc, the presence or absence of the track deviation is detected based on the tracking error signal for a certain period of time. If not, it is judged as a non-signal recording surface. By using the tracking error signal, the control of distinguishing the non-signal recording surface of the recording disc can be correctly performed in a short time. The effects obtainable by the representative of the invention of the present patent application are briefly described below. That is, the non-signal recording surface of the recording disc mounted on the disc device can be correctly distinguished in a short time. [Embodiment] 1. Representative Embodiment First, a representative embodiment of the invention of the present patent application will be described. In the description of the embodiment, the reference sign + symbol attached to the drawing with reference to the parentheses is merely an illustration of the object included in the tribute to the constituent elements of the symbol. [1] The disc device (1) according to the representative embodiment of the present invention is configured to perform _ disc discrimination processing by irradiating laser light to the mounted recording disc (2) from the optical pickup (4). Determining the result, performing focus servo control and tracking servo control, and performing recording and reproduction of information on the signal recording surface (DL) of the recording disc, and illuminating the non-signal recording surface (VL) of the recording disc Recording visual information by laser light. In the disc discrimination processing, the recording disc is irradiated with laser light, the focus servo control is executed, and the tracking servo control is not executed, so that the distance between the objective lens (7) of the pickup and the laser light receiving surface is kept constant. The pickup is moved in the radial direction of the aforementioned recording disc 200832378 to generate a tracking error signal (TER) 'According to the tracking error signal, when the track deviation is not detected within a predetermined time', the output is performed by the host interface circuit (25). The laser light receiving surface of the recording disk is a discrimination result signal (27) other than the signal recording surface. By using the tracking error signal, the control for correctly distinguishing the non-signal recording surface of the recording disc can be performed in a short time. Since the discrimination result signal is output by the host interface circuit, the host device can perform appropriate processing for the discrimination result. Specifically, in a disc discrimination process, when detecting that the laser light receiving surface of the recording disc is outside the signal recording surface, the non-signal recording surface of the recording disc may be irradiated with laser light to record visual information. Visual information recording action. The other form is determined by the disc discriminating process described above, and the number of pulses of the pulse (TER_P) of the tracking error signal is a certain number in a predetermined period of time - 莳 ^ ranMi key I lacks 1 ϋΰΑ. The ease of determination using the tracking error signal can be achieved. More specifically, a hysteresis comparator (23) for performing the above-described tracking error signal is further provided, and the discrimination is performed by the pulse outputted by the hysteresis comparator in the disc discrimination processing. Compared with the simple two-way, it can reduce the impact of noise. In the other aspect, in the disc discrimination processing, when the amplitude of the tracking error signal is equal to or lower than a predetermined level for a predetermined period of time, it is determined that the laser light irradiation surface of the recording disc is outside the signal recording surface. The CPU can perform discrimination by calculating the A/D conversion result of the tracking error signal. In the other aspect, the disc discrimination processing is performed, and the number of pulses of the dimming pulse of the tracking error -8 - 200832378 signal is a certain number or less within a predetermined time 'and the amplitude of the tracking error signal is at a predetermined time. When the inside is below a certain level, it is determined that the laser light irradiation surface of the recording disc is outside the signal recording surface. The reliability of the discrimination result can be significantly improved. [2] More specifically, the disc device has: the recording disc is irradiated with the laser light through the objective lens, and the photoelectric detector (8) performs photoelectric conversion of the reflected light from the recording disc. An actuator (9) for moving the Φ objective lens to an optical pickup within a depth of focus thereof; a second actuator (1 1 ) for moving the pickup to a radial direction of the recording disc; The output of the photodetector generates a focus error signal and a tracking error signal amplifier circuit (12); in order to keep the distance between the objective lens and the laser light receiving surface of the recording disc constant according to the focus error signal, Controlling the focus servo control circuit (15) of the first actuator; controlling the second portion in such a manner that the front pass filter follows the magnetic track of the waste disc according to the front tracking error a tracking servo circuit (1 6 ) of the actuator; and a data processing circuit (1 7 ); performing the disc discrimination processing on the recording disc irradiated with the laser light, and discriminating the disc according to the discriminating result thereof The signal recording surface of the implementation of the information And regeneration. The data processing circuit irradiates the recording disc with laser light in the disc discrimination processing, and the focus servo control circuit keeps the distance between the lens of the pickup and the laser light receiving surface of the recording disc constant. The pickup moves in the radial direction of the recording disc. 'According to the tracking error signal formed thereby, when the track deviation is not detected within a predetermined time, the laser light receiving surface for indicating the recording disc is generated as a signal. Discriminating result signal other than the recording surface - 9-200832378 (27). By using the tracking error signal, the control of the non-signal recording surface of the recording disc can be shortly distinguished. [3] According to other points of view, the servo control for the purpose of recording discs and the signal processing for the purpose of recording and reproducing the information of the recording discs are: 28) a photoelectric conversion signal of the light irradiated by the light, generating a focus error signal and a φ amplifier (12); and a focus servo control circuit for controlling the distance of the laser light receiving surface of the recording disc according to the focus error signal (1 5 According to the number, a tracking servo for servo control of a magnetic track having a recording optical disc of the objective lens and the laser light source is implemented; an arithmetic processing device (1 7 ) for executing the program: and a non-volatile memory (22) And τ are recorded by the recording unit to irradiate the laser light, and the lens of the focus servo and the laser light receiving surface of the recording disc are used to make the pickup at a radius of the recording disc. The formed tracking error signal is determined by the determination of the result of the determination, and the non-signal recording surface is implemented on the condition that the laser light of the recording disc is received by the surface when the predetermined time is deviated. Shoot laser beam to record a visual record capital movements. By using the tracking error signal, the control of the non-signal recording surface of the recording disc can be shortly distinguished. One of the specific forms is to implement the above-mentioned time-increasing operation of the semiconductor device with the correct position of the laser beam recording surface (the recording of the reflection tracking error signal of the recording disc to make the objective lens and the purpose of the aforementioned The track error signal learning device follows the pre-control circuit (16). The device for storing the program is configured to move the distance of the pickup wave in a certain direction. According to the inside, the track surface is not detected as a signal record. Recording the visual information of the disc recording time to execute the correct ground frame, the aforementioned focus-10-200832378 Servo control circuit, the aforementioned tracking servo control circuit, the aforementioned arithmetic processing device, and the single-wafer or multi-chip of the aforementioned non-volatile memory Sealed in one package. 2. Description of Embodiments Next, the embodiment will be further described in detail. <<Multi-disc device>> FIG. 1 is an example of a disc device of the present invention. The entire disc device 1 is constructed. The recording disc of the multi-disc device 1 shown in the figure is a 2CD-ROM. a CD-R/RW, a DVD-ROM, a DVD-R/RW, a DVD+R/RW, a DVD-RAM, etc., and a laser sensitized to the back surface of the data recording surface of the recording disc 2 The multi-disc drive 1 shown in the figure is provided with a record of the rotation of the disc motor (DM) 3. The disc 2 is irradiated with an optical pickup (optical pickup) 4 for laser light. The optical pickup 4 is composed of a laser light source 5, an electron beam splitter 6, and an objective lens 7 (also referred to as a collecting lens). And an optical system constituted by the photodetector 8 or the like; a mechanical actuator (FCA) 9 for shifting the objective lens 7; and a tracking actuator (TRA) 10; The objective lens 5 which is elastically supported can be moved in the thickness direction of the recording disc. The tracking actuator 10 can move the elastically supported objective lens 5 in the radial direction of the recording disc 2 (the direction in which the information tracks are traversed). The pickup 4 itself can reciprocate in the radial direction of the sheet 2 of the recording disc 200832378 by means of a threaded actuator (ΤΗ A ) 。. The laser light source 5 in the optical pickup 4 has a laser diode not shown, a driving circuit for illuminating the laser diode, and a laser diode. The divergent laser light is corrected to a collimator lens or the like which is not marked on the drawing for the purpose of parallel light, and parallel laser light is emitted. The laser beam is bent by the electron beam splitter 6 and incident on the objective lens 7. The objective lens 7 converges the beam of the laser light on the data recording surface or the recording surface of the recording disc 2. The light reflected by the recording disc 2 is incident on the photodetector 8 via the objective lens 7 and the electron beam splitter 6. The device 8 receives the intensity change of the reflected light from the recording disc 1 and supplies the photoelectrically converted signal to the high frequency amplifier (RF A ) 12 . The high frequency amplifier 12 performs current-voltage conversion on the output signal of the photodetector 8, and performs addition and subtraction processing to generate a deviation amount of the objective lens 5 and the information track, and an I-signal level and a polarity-poor tracking error signal TER. In addition, the high frequency amplifier 12 generates the focus error signal FER corresponding to the signal level and the offset of the corresponding return light by using the output signal of the photodetector 8 to generate a defocus amount (a deviation from the focus) of the laser beam.
波面變化而改變信號水準之資料再生信號（EFM信號）RF 〇 前述循軌誤差信號TER及聚焦誤差信號FER，係使用 於相對於記錄碟片2之半徑方向之拾波器4之位置控制、 及相對於拾波器4之物鏡7之位置控制。位置控制係伺服 控制或程式控制。伺服控制係利用聚焦伺服控制電路（ FCNT) 15及循軌伺服控制電路（TCNT) 16。程式控制係 -12- 200832378 利用微控制器（SCNT ) 1 7。選擇器1 8、1 9、20選擇性地 形成副迴路。藉由微控制器1 7對聚焦致動器5供應聚焦 伺服控制電路1 5對對選擇器1 8之輸出，形成包含光檢測 器8、RFA12、FER、FCNT15、FCA9在內之聚焦伺服迴路 ，以使物鏡7位於焦點深度內之方式驅動FCA9。另一方 面，藉由微控制器1 7對循跡致動器1 0及螺紋致動器1 1 供應循軌伺服控制電路1 6對選擇器1 9、20之輸出，形成 包含光檢測器 8 、 RFA12 、 TER 、 TCNT16 、 TRA10 、 THA 1 1在內之循軌伺月艮迴路，以物鏡追隨資料記錄面之資 訊磁軌之方式來驅動TRA10及THAI 1。藉由微控制器17 讀取儲存於快閃記憶體（FLASH ) 22之程式並依序執行， 來控制碟片裝置1之動作全體。以程式控制執行位置控制 時，微控制器17驅使選擇器18、19、20選擇微控制器17 所輸出+之驅動信號。藉由微^控制器1 7使物鏡7於記錄# 片2之表背方向移動，同時參照聚焦誤差信號FER，可以 檢測資料記錄面或描繪記錄面之焦點深度之範圍內之物鏡 焦點的對焦位置。此外，微控制器1 7可使物鏡7於記錄 碟片2之半徑方向移動，同時依據循軌誤差信號TER，檢 測資訊磁軌之橫跨。尤其是，第1圖中，循軌誤差信號 TER對微控制器17供應以脈衝發生電路（PLS) 23實施 二値化之循跡誤差脈衝TER_P。 資料再生信號RF被供應給信號處理·再生電路（sIG )24，利用數位信號處理實施二値化及濾波處理，且實施 解碼、誤差更正、格式轉換等，再生記錄於記錄碟片2之 -13- 200832378 資料。再生之資料，係從微控制器1 7經由主機介面（HIS )25提供給個人電腦及工作站等之主機裝置（HST) 26。 主機裝置34，對碟片裝置提供動作指令及控制資料，對微 控制器1指示多碟片裝置1之動作。多碟片裝置〗之基本 動作，係判別裝設之記錄碟片種類之碟片判別動作、針對 已判別種類之記錄碟片之資料記錄面之資料記錄動作、從 已判別種類之記錄碟片之資料記錄面讀取資料之資料再生 φ 動作、以及針對記錄碟片之描繪記錄面之雷射標籁印刷動 作。判別動作之詳細如後面所述，基本上，依據來自雷射 光所照射之記錄碟片2之反射光量之大小、及從得到使拾 波器之物鏡於上下方向移動之聚焦搜尋動作時之來自碟片 表面之反射光至得到來自資料記錄面之反射光爲止之計測 時間，來判別碟片種類。記錄動作及再生動作時，利用聚 _ 焦伺服及循軌伺服執行位置控制，同時實涵記錄資訊之讀— 取及寫入。雷射標籤印刷動作時，係執行聚焦伺服使物鏡 φ 7之焦點聚焦於描繪記錄面之焦點深度之範圍內，同時， 微控制器1 7利用程式控制使物鏡7以逐步微小刻度從描 . 繪記錄面之最內周朝最外周移動，與其同步，依據描繪資 料實施雷射光源之點燈或發光強度之控制。 第2圖係光檢測器及高頻增幅器之詳細之一實例。尤 其是，第2圖係著重於碟片判別動作時之機能之電路構成 。光檢測器8係以4個光二極體A、B、C、D進行4分割 來檢測反射光之光點。來自光二極體A、B、C、D之光電 轉換信號介由緩衝器3 1_A、3 1_B ' 3 1_C、3 1_D供應給高 -14- 200832378 頻增幅器1 2。 電流加算電路3 7，係加算全部光二極體A〜C之電流 信號，產生資料再生信號RF。資料再生信號RF，係由 A/D器38將類比信號轉換成數位信號並供應給SIG24。 對角配置之光二極體A及C之電流信號，於電流加算 電路32_AC進行加算並轉換成電壓信號。同樣地，對角配 置之光二極體B及D之電流信號，於電流加算電路32_BD 進行加算並轉換成電壓信號。電流加算電路32_AC ' 3 2_BD之輸出電壓，於減算電路33進行減算並做爲聚焦 誤差信號FER。聚焦誤差信號FER，於A/D轉換器34被 從類比信號轉換成數位信號並供應給FCNT 1 5等。拾波器 3之物鏡7符合焦點深度時，利用其光學系之作用，使主 點均一地集光於各光二極體A〜D而成爲圓形。過近時， 利用其光學系之作用，使ΐ"點集光於光二極體A、C l)而 成爲橢圓形。過遠時，利用其光學系之作用，集光於光二 極體B、D側而成爲橢圓形。因此，符合焦點深度時，減 算電路33之輸出爲零，採用其前後之極性不同之値。亦 即’聚焦誤差信號FER，具有對應從焦點位置之偏離量之 振幅及對應偏離方向之極性。聚焦伺服控制時，聚焦致動 器9以使聚焦誤差信號FER成爲零之方式執行動作。 FCNT15之輸出，係以D/A轉換器39將數位信號轉換成類 比信號並供應給FCA9。 配置於光點左側之光二極體A及D之電流信號，於 電流加算電路32-AD進行加算並轉換成電壓信號。同樣 -15- 200832378 地，配置於光點右側之光二極體B及（：之電流信號 流加算電路32_BC進行加算並轉換成電壓信號。電 電路32_AD、32_BC之輸出電壓，於減算電路35 算並做爲循軌誤差信號TER。光點追隨資訊磁軌時 於資訊磁軌之分割點之擴散爲左右相等，然而，相 訊磁軌，光點向右偏離時，其擴散量也會左右不同 ，減算電路34之輸出，相對於資訊磁軌若光點爲 稱位置時，爲零，對應左右之偏離量而改變振幅， 振幅極性爲不同。循軌伺服控制時，循跡致動器1 循軌誤差信號TER成爲零之方式執行動作。接收循 信號TER之脈衝發生電路23係由例如滯後比較器 。如第3圖所示，使循軌伺服成爲非活性並執行聚 ，同時利用程式控制橫越過拾波器資料記錄面之資 時，形成近1Γ於正弦波形之循軌誤差信蘇TER。滯 器23之高水準側之閾値水準爲VTH、低水準側之 準爲 VTL，循跡誤差脈衝TRER_P，實質上，係 T r a c k i n g z e r 〇 c 1 o s e )信號。例如，切換再生磁軌 控制器1 7以螺紋致動器1 1於光碟片之半徑方向驅 器時，藉由循跡誤差脈衝TRER_P之時脈數之計數 握橫跨磁軌數。多碟片裝置1，於碟片判別動作時 用循跡誤差脈衝TRER_P。以下，針對以碟片判別 之控制進行詳細說明。 <<碟片判別控制>> ，於電 流加算 進行減 ，相對 對於資 。因此 左右對 左右之 〇以使 軌誤差 所構成 焦伺服 訊磁軌 後比較 閾値水 TZC ( 時，微 動拾波 ，可掌 ，亦利 爲目的 -16- 200832378 第4圖係DVD系之記錄碟片（DVD碟片）之基本構 造，第5圖係CD系之記錄碟片（CD碟片）之基本構造。 此處，係針對具有資料記錄面及描繪記錄面時進行說明。 FF係記錄碟片之表面，BF係記錄碟片之背面，DL係資料 記錄面，VL係描繪記錄面。DVD碟片、CD碟片皆爲碟片 厚度1.2mm之規格化。從碟片表面FF至資料記錄面DL 爲止之距離，亦爲DVD碟片0.6mm、CD碟片1.1mm之規 格化。從背面BF至描繪記錄面VL爲止之距離，規格尙 未一般化，然而，DVD碟片時，與從表面FF至資料記錄 面DL爲止之距離無太大差異。因爲其距離之不同，難以 區別資料記錄面DL面向拾波器4、或描繪記錄面VL面向 拾波器4。若有如CD碟片之較大差異，則可以距離之差 來進行區別。 —記錄磲片之表面反射率及資料記錄面之反蔚率， DVD-ROM、DVD±R、以及其以外之記錄碟片之間，有很 大的差異。其以外之記錄碟片之間時，DVD±RW之反射率 與其他記錄碟片有很大的差異，DVD-RAM之碟片管理區 域與其他記錄碟片不同，與CD系碟片之間，有如第4圖 及第5圖所說明之規格上之差異。碟片判別處理時，利利 用反射率之差異、碟片管理區域之差異、以及規格之差異 來判定碟片之種別。 第6圖係利用聚焦搜尋之碟片判別之原理。聚焦搜.尋 ’係不執行聚焦伺服而利用程式控制使物鏡7逐漸接近記 錄碟片2之平面，於其途中，使焦點形成於表面FF (背 -17- 200832378 面BF )，其後，使焦點形成於資料記錄面DL (描繪記錄 面VL )。因爲形成焦點後，反射光量會增加，藉由依據 信號RF計測反射光量之水準，可以取得形成焦點之位置 、及該位置之反射水準。依據最初檢測時刻及下一檢測時 刻之差，可以判別表面FF (背面BF )及資料記錄面DL ( 描繪記錄面VL )之距離。波形Wa係從DVD碟片之表面 FF照射雷射光來實施聚焦搜尋時之反射光量之波形，波 形Wd係從CD碟片之表面FF照射雷射光來實施聚焦搜尋 時之反射光量之波形。由第4圖及第5圖所說明之規格差 異可以得知，因爲DVD碟片及CD碟片之間，從表面FF 至資料記錄面DL爲止之距離之差較大，利用判定閾値時 間Tth_H可以區別各計測時間Ta及Td之差異。相對於此 ，Wb係從DVD碟片之背面BF照射雷射光來實施聚焦搜 尋時之+反射光董之波形，FVD碟片時，因爲從^表面FF至 資料記錄面DL爲止之距離及從背面BF至描繪記錄面VL 爲止之距離之差較小，故計測時間Ta及Tb幾乎沒有差異 ，難以只利用其來區別兩者。尤其是，如波形Wb，高感 光度之描繪記錄面VL與DVD±RW之資料記錄面DL係實 質相同之反射率，DVD±RW時，即使考慮反射光量之差， 也難以區別資料記錄面DL及描繪記錄面VB。如波形Wc 之低感光度之描繪記錄面VL時，因爲反射率低於資料記 錄面DL而使反射光量出現差異，即使爲DVD±RW碟片， 亦可藉其識別資料記錄面DL及描繪記錄面VL。DVD碟 片包括 DVD-ROM、DVD土R、DVD±RW、DVD-RAM，然而 -18- 200832378 ，DVD-ROM、DVD土R 與 DVD土RW、DVD-RAM 相比，以 表面反射率而言，因爲資料記錄面之反射率爲較高之3至 4倍，故可以利用反射光量之差來進行區別。而且，因爲 描繪記錄面之反射率小於其資料記錄面之反射率，亦可用 以區別DVD-ROM、DVD±R之資料記錄面及描繪記錄面。 容易成爲問題者，係近似於DVDzhRW之資料記錄面之反 射率之高感光度之描繪記錄面VL之反射率。針對其他 DVD系碟片，亦可藉由考慮反射光量之水準差來區別資料 記錄面DL及描繪記錄面VL。波形We係從CD碟片之背 面BF照射雷射光來實施聚焦搜尋時之反射光量之波形， 因爲其計測時間Te也是極短，藉由利用判定閾値時間 Tth-L，CD碟片之資料記錄面DL原本就容易與DVD碟片 之資料記錄面DL及描繪記錄面VL進行區別。 上述聚焦搜毒時，爲了區別難以區別之高感光度之描 繪記錄面VL及DVD±RW碟片之資料記錄面DL，利用前 述循軌誤差信號T E R。亦即，如第7圖所示，因爲描繪記 錄面VL未存在資訊磁軌，循軌誤差信號TER不會產生如 第3圖之周期信號成分，而只是雜訊成分所導致之少許變 動。雜訊成分之振幅若位於滯後比較器23之高水準側之 閾値水準VTH及低水準側之閾値水準VTL之間，則循跡 誤差脈衝TER_P ( TZC)固定爲低水準。微控制器17，於 執行聚焦伺服之狀態下，一邊使拾波器4於記錄碟片2之 半徑方向移動，一邊實施判定，若於既定時間內從循跡誤 差脈衝TER_P所得到之脈衝數未達到既定値則判定成非 -19- 200832378 資料記錄面。藉此，碟片判別處理時’藉由倂用上述聚焦 搜尋及循跡誤差脈衝TER_P之判定，亦可針對高感光度 之描繪記錄面VL及DVDiiRW碟片之資料記錄面DL進行 區別。 第8圖係利用微控制器1 7之控制之碟片判別處理流 程。微控制器1 7，於***記錄碟片2時即開始執行碟片判 別處理。首先，使DVD用雷射發光（S1 )，開始聚焦搜 尋（S2 )。聚焦搜尋，如前面所述，係執行於裝設之記錄 碟片2之表面FF (背面BF )及資料記錄面DL (描繪記錄 面VL)增大之反射光量之增大地點間之時間計測、及反 射光之水準檢測（S 3 )。聚焦搜尋動作中，亦執行反射光 之水準檢測。依據步驟S3之檢測結果，執行碟片判定處 理（S4 )。針對CD系碟片或DVD系碟片，可利用第4圖 及第5圖之規格差異進抒屬別，CD系碟片之^資料記錄面 DL時，可以利用執行聚焦搜尋時之表面FF (背面BF )及 資料記錄面DL (描繪記錄面VL )之計測時間來進行識別 。DVD-ROM及DVD±R之資料記錄面DL時，利用其反射 光水準來進行識別，針對DVD-RAM碟片之資料記錄面 DL時，因爲資料管理區域與其他媒體不同，故可進行識 別。如前面所述，針對DVD±RW碟片，利用反射光水準 無法識別是否爲資料記錄面DL。因爲DVD±RW碟片時， 資料記錄面DL之反射率及高感光度之描繪記錄面VL之 反射率沒有太大差異。RST1時，得到裝設之記錄碟片係 DVD-ROM、DVD土R、DVD-RAM、CD-ROM、CD-R、或 -20- 200832378 CD-RW當中之任一資料記錄面DL之結果。對主機裝置通 知其結果（S5 ) 。RST2時，得到 DVD±RW、或任一記錄 碟片2之描繪記錄面VL之結果。判定處理結果爲RST2 時’其次，確認未正在執行循軌伺服控制（S6 )，執行聚 焦伺服控制’同時使拾波器4於記錄碟片2之半徑方向移 動，且實施一定朝間之循跡誤差脈衝TER_P參照（S7 ) 。一定期間，必須爲至少可橫跨複數資訊磁軌之時間，例 如，30msec。參照係例如循跡誤差脈衝TER_P之脈衝數 之計數。針對其計數結果，判定是否有軌道偏離（S8 )。 例如，其計數値爲小於其計測時間可橫跨之磁軌數η之數 m ( 0<m<<n )以下時，判定成無軌道偏離。有軌道偏離時 ，判定成DVD±RW之資料記錄面DL ( S9)，對主機裝置 通知其判定結果（S 1 0 )。無軌道偏離時，判定成任一記 錄碟芹之描飞會記録面（S1 1 ) _，對主_機裝慮通知袁判定結 果（S 1 2 )。該通知介由第1圖之主機介面25被當做判別 結果信號2 7供應給主機裝置2 6。此時，主機裝置2 6正在 執行雷射標籤印刷支援程式時，回應該判別結果信號27， 對微控制器1 7指示雷射標籤印刷，藉此，微控制器1 7開 始執行對前述記錄碟片2之描繪記錄面VL照射雷射光而 記錄可視資訊之控制。此外，其時，主機裝置2 6正在執 行記錄資料之再生或資料記錄動作之支援程式時，回應該 判別結果信號27，執行錯誤顯示。 藉由以上，可正確地判定記錄碟片之資料記錄面及描 繪記錄面。此外，因爲只有在只有聚焦伺服爲開啓狀態時 -21 - 200832378 '’才可依據循軌誤差信號檢測軌道偏離之有無，故可縮短 爲資料記錄面或描繪記錄面之處理時間。因爲聚焦搜尋及 反射光量之計測精度無需特別高亦可，可以不同準備轉換 精度極高之A/D轉換器，計測亦無需太多的時間。尤其是 ，因爲使用特滯後比較器2 3，故不易受到雜訊所導致之不 * 良影響。 第9圖係第8圖之步驟S7、S8時之軌道偏離之有無 φ 判定之其別實例。第9圖時，係利用A/D轉換器40將循 軌誤差信號TER從類比信號轉換成數位信號，將經過轉換 之循跡誤差資料TER_D輸入至微控制器17A。微控制器 1 7 A ’於碟片判別處理時，在第8圖之步驟S 6之後，利用 循跡誤差資料TER_D判別既定時間（例如30msec)內之 循軌誤差信號之振幅是否爲一定水準以下。一定水準，係 — 例如小於軌Μ偏離所彳^到之循fl誤差信號之振幅、大於雜 訊所造成之振幅之水準，例如200mV。微控制器17A檢測 • 出循軌誤差信號之振幅爲一定水準以下時，判定成無軌道 偏離，檢測出超過一定水準時，判別成有軌道偏離。其他 . 之構成，因爲與到目k爲止者相同，故省略其詳細說明。 藉此，亦可得到與上述相同之效果。未使用滯後比較器， 亦可排除雜訊之影響。 第10圖係第8圖之步驟S7、S8之軌道偏離之有無判 定之另一其他實例。第1〇圖兼具第9圖及第2圖之構成 。微控制器1 7B，輸入滯後比較器23所輸出之循跡誤差 脈衝TER_P、及A/D轉換器40所輸出之循跡誤差資料 -22- 200832378 TER_D。微控制器17B於碟片判別處理時，與第8圖之步 驟S7、S8相同，實施一定期間之循跡誤差脈衝TER_P之 計數來判定軌道偏離之有無，且，藉由判別既定時間內之 來自循跡誤差資料TER_D之循軌誤差信號之振幅是否爲 一定水準以下，來判定軌道偏離之有無。雙方之判定結果 * 爲一致時，採用該判定結果，不一致時，重新執行判定處 理。與到目前爲止之實例相比，判定結果具有較高之精度 第1圖所示之多碟片裝置時，42所示之電路方塊，並 無特別限制，然而，亦可以爲形成於單一半導體晶片之 SOC ( System On Chip )之 LSI。此時，相對於 LSI42，以 其他半導體晶片構成快閃記憶體22時，亦可以採用將 LSI42及快閃記憶體22之多晶片密封於單一封裝之SIP ( " System In fackagey 之半導體裝置 28。 以上，係利用實施形態針對本發明者之發明進行具體 • 說明，然而，本發明並未受限於此，在未背離其要旨範圍 ，當然可進行各種變更。例如，上述說明時，係以DVD土 RW之資料記錄面及高感光度之描繪記錄面之反射率差較 小時做爲實例，然而，藉由塗佈於描繪記錄面之感光性塗 料而進一步提高反射率時亦可，相反之較低時亦可，利用 聚焦搜尋難以進行資料記錄面及描繪記錄面之識別之記錄 碟片並未受限爲DVD±RW。DVD記錄碟片亦無限制。微 控制器17，亦可以採用具備CPU (中央處理裝置）及其 周邊電路之微電腦。本發明不但可應用於描繪記錄面之判 -23- 200832378 別，尙可應用於如完成記錄之DVD-ROM之標題印刷面之 非信號記錄面之判別控制，可以短時間正確地執行該處理 〇The data reproduction signal (EFM signal) RF that changes the signal level, the tracking error signal TER and the focus error signal FER are used for position control of the pickup 4 in the radial direction with respect to the recording disc 2, and The position control of the objective lens 7 with respect to the pickup 4 is performed. Position control is servo control or program control. The servo control system utilizes a focus servo control circuit (FCNT) 15 and a tracking servo control circuit (TCNT) 16. Program Control System -12- 200832378 Using a Microcontroller (SCNT) 1 7. The selectors 1, 8, 19, 20 selectively form a secondary loop. The focus controller 5 is supplied with the focus servo control circuit 15 to the output of the selector 18 by the microcontroller 17, and a focus servo circuit including the photodetector 8, RFA12, FER, FCNT15, and FCA9 is formed. The FCA 9 is driven in such a manner that the objective lens 7 is located within the depth of focus. On the other hand, the output of the tracking servo control circuit 16 to the selectors 19, 20 is supplied to the tracking actuator 10 and the threaded actuator 1 by the microcontroller 17, forming a photodetector 8 including The RFA12, TER, TCNT16, TRA10, and THA 1 1 are used to drive the TRA10 and THAI 1 in the manner that the objective track follows the information track of the data recording surface. The operation of the disc device 1 is controlled by the microcontroller 17 reading the program stored in the flash memory (FLASH) 22 and executing it in sequence. When the position control is executed by the program control, the microcontroller 17 drives the selectors 18, 19, 20 to select the drive signal output by the microcontroller 17. By moving the objective lens 7 in the front and back directions of the recording #2 by the micro controller 17, while referring to the focus error signal FER, it is possible to detect the in-focus position of the objective lens focus within the range of the depth of focus of the data recording surface or the drawing recording surface. . Further, the microcontroller 17 can move the objective lens 7 in the radial direction of the recording disc 2 while detecting the traverse of the information track in accordance with the tracking error signal TER. In particular, in Fig. 1, the tracking error signal TER supplies the microcontroller 17 with a tracking error pulse TER_P which is implemented by the pulse generating circuit (PLS) 23. The data reproduction signal RF is supplied to the signal processing/reproduction circuit (sIG) 24, and is subjected to binarization and filtering processing by digital signal processing, and decoding, error correction, format conversion, and the like are performed, and reproduction is recorded on the recording disc 2-13. - 200832378 Information. The reproduced data is supplied from the microcontroller 17 via a host interface (HIS) 25 to a host device (HST) 26 such as a personal computer or a workstation. The host device 34 supplies an operation command and control data to the disc device, and instructs the microcontroller 1 to operate the multi-disc device 1. The basic operation of the multi-disc device is to discriminate the disc discriminating operation of the type of the recording disc to be mounted, the data recording operation on the data recording surface of the disc for the discriminating type, and the recording disc from the discriminating type. The data recording surface reads the data reproduction φ action, and the laser label printing operation for the recording surface of the recording disc. The details of the discriminating operation are basically as follows, based on the magnitude of the amount of reflected light from the recording disc 2 irradiated by the laser light, and from the disc for the focus search operation for moving the objective lens of the pickup in the up and down direction. The type of disc is determined by measuring the reflected light from the surface of the sheet until the reflected light from the data recording surface is obtained. When recording motion and regenerative motion, the position control is performed using the poly-focus servo and the tracking servo, and the reading of the recorded information is taken and written. When the laser label printing operation is performed, the focus servo is executed to focus the focus of the objective lens φ 7 within the range of the depth of focus of the drawing surface, and the microcontroller 17 uses the program control to make the objective lens 7 draw from the step by step. The innermost circumference of the recording surface moves toward the outermost circumference, and in synchronization with this, the lighting of the laser light source or the control of the luminous intensity is performed according to the drawing data. Fig. 2 is an example of a detailed description of a photodetector and a high frequency amplifier. In particular, Fig. 2 focuses on the circuit configuration of the function of the disc discriminating operation. The photodetector 8 performs four divisions of four photodiodes A, B, C, and D to detect the spot of the reflected light. The photoelectric conversion signals from the photodiodes A, B, C, and D are supplied to the high-14-200832378 frequency booster 12 via the buffers 3 1_A, 3 1_B ' 3 1_C, 3 1_D. The current addition circuit 3 7 adds the current signals of all the photodiodes A to C to generate a data reproduction signal RF. The data reproduction signal RF is converted by the A/D converter 38 into a digital signal and supplied to the SIG 24. The current signals of the optical diodes A and C disposed diagonally are added to the current addition circuit 32_AC and converted into a voltage signal. Similarly, the current signals of the diagonally-configured photodiodes B and D are added to the current addition circuit 32_BD and converted into voltage signals. The output voltage of the current addition circuit 32_AC ' 3 2_BD is subtracted by the subtraction circuit 33 and used as the focus error signal FER. The focus error signal FER is converted from the analog signal to the digital signal by the A/D converter 34 and supplied to the FCNT 15 and the like. When the objective lens 7 of the pickup 3 conforms to the depth of focus, the principal points are uniformly collected by the respective photodiodes A to D to form a circular shape by the action of the optical system. When it is too close, the ΐ" points are concentrated on the photodiodes A and C1 by the action of the optical system to form an elliptical shape. When it is too far away, it is concentrated on the B and D sides of the photodiode by the action of its optical system, and becomes elliptical. Therefore, when the depth of focus is met, the output of the subtraction circuit 33 is zero, and the polarity before and after the difference is used. That is, the focus error signal FER has an amplitude corresponding to the amount of deviation from the focus position and a polarity corresponding to the deviation direction. In the focus servo control, the focus actuator 9 performs an operation such that the focus error signal FER becomes zero. The output of the FCNT 15 converts the digital signal into an analog signal by the D/A converter 39 and supplies it to the FCA 9. The current signals of the photodiodes A and D disposed on the left side of the spot are added to the current addition circuit 32-AD and converted into voltage signals. Similarly, the photodiode B and the current signal flow addition circuit 32_BC disposed on the right side of the spot are added and converted into voltage signals. The output voltages of the electric circuits 32_AD and 32_BC are calculated by the subtraction circuit 35. As the tracking error signal TER, the spread of the information track at the dividing point of the information track when the spot follows the information track is equal to the left and right. However, when the spot is deviated to the right, the amount of diffusion will be different. The output of the subtraction circuit 34 is zero when the light spot is called the position relative to the information track, and the amplitude is changed corresponding to the left and right deviation amount, and the amplitude polarity is different. When the tracking servo is controlled, the tracking actuator 1 tracks the track. The operation is performed in such a manner that the error signal TER becomes zero. The pulse generating circuit 23 that receives the tracking signal TER is, for example, a hysteresis comparator. As shown in Fig. 3, the tracking servo is made inactive and performs aggregation while traversing by program control. When the data of the data acquisition surface of the pickup is used, a tracking error SEN of the sinusoidal waveform is formed. The threshold level of the high level side of the hysteresis 23 is VTH, and the low level is the VTL. The error pulse TRER_P, in essence, is a signal T r a c k i n g z e r 〇 c 1 o s e ). For example, when the regenerative track controller 17 is switched by the threaded actuator 11 in the radial direction of the optical disk, the number of tracks is traversed by the count of the number of clocks of the tracking error pulse TRER_P. The multi-disc device 1 uses a tracking error pulse TRER_P for disc discrimination operation. Hereinafter, the control by the disc discrimination will be described in detail. <<Disc discriminating control>>, in the current addition, subtraction, relative to capital. Therefore, the left and right sides of the left and right sides are used to make the track error constitute the focal servo track, and then the threshold water TZC is compared (when the micro-motion picks up, can be used, also for the purpose of -16-200832378 Figure 4 is a DVD-based recording disc The basic structure of a DVD disc is a basic structure of a CD-based recording disc (CD disc). Here, a description will be given of a data recording surface and a recording surface. On the surface, the BF is the back side of the disc, the DL is the data recording surface, and the VL is the recording surface. The DVD disc and the CD disc are all standardized to a disc thickness of 1.2 mm. From the disc surface FF to the data recording surface. The distance from the DL is also 0.6mm for DVD discs and 1.1mm for CD discs. The distance from the back surface BF to the recording surface VL is not standardized. However, when the DVD disc is used, the surface is removed from the surface. The distance from the FF to the data recording surface DL is not much different. Because of the difference in distance, it is difficult to distinguish the data recording surface DL from the pickup 4 or the recording surface VL toward the pickup 4. If there is a CD disc Large differences, you can distinguish between distances - Recording the surface reflectance of the cymbal and the inverse rate of the data recording surface, there is a big difference between the DVD-ROM, DVD±R, and other recording discs. The reflectivity of DVD±RW is very different from that of other recording discs. The disc management area of DVD-RAM is different from other recording discs, and between CD discs, as shown in Figures 4 and 5. The difference in the specifications of the description. In the disc discrimination processing, the disc type is determined by the difference in reflectance, the disc management area difference, and the difference in specifications. Fig. 6 is a discriminating disc using the focus search. Principle. Focusing search. Searching does not perform the focus servo and uses the program control to gradually bring the objective lens 7 closer to the plane of the recording disc 2, and on the way, the focus is formed on the surface FF (back-17-200832378 plane BF), followed by The focal point is formed on the data recording surface DL (drawing the recording surface VL). Since the amount of reflected light is increased after the focus is formed, the position at which the focus is formed and the reflection level of the position can be obtained by measuring the level of the reflected light amount according to the signal RF. .in accordance with The difference between the initial detection time and the next detection time can determine the distance between the surface FF (back surface BF) and the data recording surface DL (drawing the recording surface VL). The waveform Wa is irradiated with laser light from the surface FF of the DVD disc to perform focus search. The waveform of the amount of reflected light at a time, the waveform Wd is a waveform of the amount of reflected light when the laser beam is irradiated from the surface FF of the CD disc to perform the focus search. The difference in specifications described in FIGS. 4 and 5 can be known because of the DVD. The difference between the distance from the surface FF to the data recording surface DL between the disc and the CD disc is large, and the difference between the measurement times Ta and Td can be distinguished by the determination threshold time Tth_H. On the other hand, Wb emits laser light from the back surface BF of the DVD disc to perform the + reflected light waveform during the focus search, and the FVD disc has a distance from the surface FF to the data recording surface DL and from the back surface. Since the difference between the distances of BF and the recording surface VL is small, there is almost no difference between the measurement times Ta and Tb, and it is difficult to distinguish them by only using them. In particular, as the waveform Wb, the high-sensitivity recording surface VL and the data recording surface DL of the DVD±RW are substantially the same reflectance, and in the case of the DVD±RW, it is difficult to distinguish the data recording surface DL even when considering the difference in the amount of reflected light. And depicting the recording surface VB. When the recording surface VL is drawn at a low sensitivity of the waveform Wc, since the reflectance is lower than the data recording surface DL, the amount of reflected light is different, and even if it is a DVD±RW disc, the data recording surface DL and the drawing record can be recognized by Face VL. DVD discs include DVD-ROM, DVD R, DVD±RW, DVD-RAM, however -18-200832378, DVD-ROM, DVD R is compared to DVD RW, DVD-RAM, in terms of surface reflectance Since the reflectance of the data recording surface is 3 to 4 times higher, the difference in the amount of reflected light can be used to distinguish. Further, since the reflectance of the drawing surface is smaller than the reflectance of the data recording surface, it is also possible to distinguish the data recording surface of the DVD-ROM, DVD±R, and the recording surface. It is easy to be a problem, and is a reflectance of the recording surface VL of the high sensitivity which is similar to the reflectance of the data recording surface of the DVDzhRW. For other DVD-based discs, the data recording surface DL and the recording surface VL can be distinguished by considering the level difference of the amount of reflected light. The waveform We is a waveform of the amount of reflected light when the laser beam is irradiated from the back surface BF of the CD disc to perform the focus search, because the measurement time Te is also extremely short, and the data recording surface of the CD disc is utilized by using the determination threshold time Tth-L. The DL is originally easily distinguished from the data recording surface DL of the DVD disc and the drawing recording surface VL. In the above-mentioned focus search, in order to distinguish the hard-to-distort high-sensitivity recording surface VL and the data recording surface DL of the DVD±RW disc, the above-described tracking error signal T E R is used. That is, as shown in Fig. 7, since the information track is not present in the drawing surface VL, the tracking error signal TER does not generate a periodic signal component as shown in Fig. 3, but only a slight change caused by the noise component. If the amplitude of the noise component is between the threshold 値 level VTH on the high level side of the hysteresis comparator 23 and the threshold 値 level VTL on the low level side, the tracking error pulse TER_P (TZC) is fixed to a low level. The microcontroller 17 performs the determination while moving the pickup 4 in the radial direction of the recording disc 2 while the focus servo is being executed, and the number of pulses obtained from the tracking error pulse TER_P in a predetermined time is not When the established 値 is reached, it is judged as non--19- 200832378 data recording surface. Thereby, the determination of the focus search and the tracking error pulse TER_P by the use of the above-described focus search and tracking error pulse TER_P can be distinguished between the high-sensitivity drawing recording surface VL and the data recording surface DL of the DVDiiRW disc. Fig. 8 is a disc discriminating process using the control of the microcontroller 17. The microcontroller 17 starts the disc discrimination process when the recording disc 2 is inserted. First, the DVD is irradiated with laser light (S1) to start focus search (S2). The focus search, as described above, is performed on the time between the increase in the amount of reflected light of the surface FF (back surface BF) of the mounted recording disk 2 and the increase in the amount of reflected light on the data recording surface DL (drawing recording surface VL), And level detection of reflected light (S 3 ). In the focus search operation, the level detection of the reflected light is also performed. According to the detection result of the step S3, the disc decision processing (S4) is executed. For CD-based discs or DVD-based discs, you can use the difference between the specifications of Figures 4 and 5, and when using the data recording surface DL of the CD-based disc, you can use the surface FF when performing the focus search ( The measurement time of the back surface BF) and the data recording surface DL (drawing the recording surface VL) is recognized. When the data recording surface DL of the DVD-ROM and DVD±R is used for recognition by the reflected light level, when the data recording area DL is recorded for the DVD-RAM disc, the data management area can be distinguished because it is different from other media. As described above, for the DVD±RW disc, it is impossible to recognize whether or not the data recording surface DL is using the reflected light level. Since the DVD±RW disc, the reflectance of the data recording surface DL and the reflectance of the high-sensitivity recording surface VL are not much different. At RST1, the result of the data recording surface DL of any of the recorded recording discs of DVD-ROM, DVD R, DVD-RAM, CD-ROM, CD-R, or -20-200832378 CD-RW is obtained. The result is notified to the host device (S5). At RST2, the result of the DVD±RW or the recording surface VL of any of the recording discs 2 is obtained. When the result of the determination processing is RST2, 'Secondly, it is confirmed that the tracking servo control is not being executed (S6), the focus servo control is executed', and the pickup 4 is moved in the radial direction of the recording disc 2, and a tracking error of a certain direction is performed. The pulse TER_P is referenced (S7). For a certain period of time, it must be at least the time to cross the complex information track, for example, 30msec. The reference frame is, for example, the count of the number of pulses of the tracking error pulse TER_P. Whether or not there is an orbital deviation is determined for the result of the counting (S8). For example, when the count 値 is less than the number m (0 < m << n ) of the number of magnetic tracks η over which the measurement time can be traversed, it is determined that there is no orbital deviation. When there is a track deviation, it is judged as the data recording surface DL of the DVD ± RW (S9), and the host device is notified of the determination result (S 1 0 ). When there is no orbital deviation, it is judged that the recording surface (S1 1 ) _ of any recording disc is notified, and the result of the judgment of the main machine is notified (S 1 2 ). The notification is supplied to the host device 26 via the host interface 25 of Fig. 1 as the discrimination result signal 27. At this time, when the host device 26 is executing the laser label printing support program, it returns the discrimination result signal 27, and instructs the microcontroller 17 to print the laser label, whereby the microcontroller 17 starts executing the aforementioned recording disc. The recording surface VL of the sheet 2 illuminates the laser light to record the control of the visual information. Further, at this time, when the host device 26 is executing the support program for recording data reproduction or data recording operation, the determination result signal 27 is returned and the error display is performed. With the above, the data recording surface and the recording recording surface of the recording disc can be correctly determined. In addition, since only the focus servo is turned on -21 - 200832378 '' can detect the presence or absence of the track deviation based on the tracking error signal, it can be shortened to the processing time of the data recording surface or the drawing surface. Since the measurement accuracy of the focus search and the amount of reflected light does not need to be particularly high, it is possible to prepare an A/D converter with extremely high conversion accuracy, and the measurement does not require much time. In particular, since the special hysteresis comparator 23 is used, it is not susceptible to the adverse effects caused by noise. Fig. 9 is an example of the orbital deviation of steps S7 and S8 of Fig. 8 for the determination of φ. In Fig. 9, the tracking error signal TER is converted from the analog signal to the digital signal by the A/D converter 40, and the converted tracking error data TER_D is input to the microcontroller 17A. When the microcontroller 1 7 A' is in the disc discrimination processing, after the step S6 of FIG. 8, the tracking error data TER_D is used to determine whether the amplitude of the tracking error signal within a predetermined time (for example, 30 msec) is below a certain level. . A certain level, for example, less than the amplitude of the fl error signal from the trajectory of the trajectory, greater than the amplitude of the amplitude caused by the noise, such as 200mV. The microcontroller 17A detects that when the amplitude of the tracking error signal is equal to or lower than a certain level, it is determined that there is no orbital deviation, and when the detection exceeds a certain level, it is determined that there is an orbital deviation. The other configuration is the same as that of the item k, and detailed description thereof will be omitted. Thereby, the same effects as described above can be obtained. The hysteresis comparator is not used and the effects of noise can be eliminated. Fig. 10 is another example of the determination of the orbital deviation of steps S7 and S8 of Fig. 8. The first map has the composition of the 9th and 2nd drawings. The microcontroller 1 7B inputs the tracking error pulse TER_P outputted by the hysteresis comparator 23 and the tracking error data -22-200832378 TER_D outputted by the A/D converter 40. In the disc discrimination processing, the microcontroller 17B performs the counting of the tracking error pulse TER_P for a certain period of time in the same manner as the steps S7 and S8 of FIG. 8 to determine the presence or absence of the orbital deviation, and by discriminating from the predetermined time. Whether the amplitude of the tracking error signal of the tracking error data TER_D is below a certain level determines whether or not the track deviation is present. If the judgment result of both parties is *, the judgment result is used, and if it is inconsistent, the judgment processing is re-executed. The circuit block shown in FIG. 42 is not particularly limited, but may be formed on a single semiconductor wafer, as compared with the example so far, when the determination result has a higher precision than the multi-disc device shown in FIG. LSI (System On Chip) LSI. In this case, when the flash memory 22 is formed of another semiconductor wafer with respect to the LSI 42, a semiconductor device 28 in which a plurality of wafers of the LSI 42 and the flash memory 22 are sealed in a single package may be used. The present invention has been described with reference to the embodiments of the present invention. However, the present invention is not limited thereto, and various modifications may be made without departing from the scope of the invention. For example, in the above description, a DVD is used. The difference between the reflectance difference of the data recording surface of the soil RW and the high-sensitivity recording surface is as an example. However, it is also possible to further increase the reflectance by applying the photosensitive paint on the recording surface, and vice versa. At lower times, the recording discs that are difficult to identify by the focus search and the identification of the recording surface are not limited to DVD±RW. The DVD recording disc is also unlimited. The microcontroller 17 can also be equipped with Microcomputer of CPU (Central Processing Unit) and its peripheral circuits. The present invention can be applied not only to the judgment of the recording surface -23-200832378, but also to the completion of The DVD-ROM title of the non-printing identification control signal recording surface of the face, a short time can perform the process correctly billion
本發明可應用於CD-R、DVD-R、DVD-RAM等之PC 周邊機器之記錄碟片裝置。此外，亦可應用於民生用之 DVD記錄器等。 【圖式簡單說明】 第1圖係本發明之碟片裝置例之多碟片裝置之全體方 塊圖。 第2圖係光檢測器及高頻增幅器之詳細例之電路圖。 第3圖係循軌誤差信號及TZC信號例之波形圖。 第4圖係DVD系之記錄碟片（DVD碟片）之基本構 造例之槪略麗割面圖。 第5圖係CD系之記錄碟片（CD碟片）之基本構造 例之槪略縱剖面圖 第6圖係聚焦搜尋之碟片判別原理例之時序圖。 第7圖係從描繪記錄面所得到之循軌誤差信號TER及 TZC信號例之波形圖。 第8圖係微控制器之控制之碟片判別處理動作之流程 圖。 第9圖係第8圖之步驟S7、S8之軌道偏離有無判定 之其他例之電路圖。 第10圖係第8圖之步驟S7、S8之軌道偏離有無判定 -24- 200832378 之另一其他例之電路圖。 【主要元件符號說明】 I :多碟片裝置 2:記錄碟片 3 :碟片馬達（DM) 4 =光學拾波器 5 :雷射光源 g 6 :電子束***器 7 :物鏡 9 :聚焦致動器（FCA) 10 :循跡致動器（TRA) II :螺紋致動器（THA) 12 :高頻增幅器（RFA) TER :循軌誤I信號 FER :聚焦誤差信號 • RF :資料再生信號（EFM信號） 1 5 :聚焦伺服控制電路（FCNT ) 16:循軌伺服控制電路（TCNT) 17 :微控制器（SCNT) 1 8、1 9、2 0 :選擇器 23 :脈衝發生電路（滯後比較器） 25 :主機介面（HIS ) 2 7 :判別結果信號 28 :半導體裝置 -25-The present invention is applicable to a recording disc device of a PC peripheral device such as a CD-R, a DVD-R, or a DVD-RAM. In addition, it can also be applied to DVD recorders for people's livelihood. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing a multi-disc device of an example of a disc device of the present invention. Fig. 2 is a circuit diagram showing a detailed example of a photodetector and a high frequency amplifier. Figure 3 is a waveform diagram of an example of a tracking error signal and a TZC signal. Fig. 4 is a schematic view showing a basic configuration example of a DVD-based recording disc (DVD disc). Fig. 5 is a schematic diagram showing a basic structure of a CD-based recording disc (CD disc). Fig. 6 is a timing chart showing an example of disc discrimination principle of a focused search. Fig. 7 is a waveform diagram showing an example of the tracking error signal TER and the TZC signal obtained from the recording surface. Fig. 8 is a flow chart showing the disc discrimination processing operation controlled by the microcontroller. Fig. 9 is a circuit diagram showing another example of the determination of the orbital deviation of the steps S7 and S8 in Fig. 8. Fig. 10 is a circuit diagram showing another example of the deviation of the orbital deviation of steps S7 and S8 of Fig. 8 -24-200832378. [Main component symbol description] I : Multi-disc device 2: Recording disc 3: Disc motor (DM) 4 = Optical pickup 5: Laser light source g 6 : Electron beam splitter 7: Objective lens 9: Focusing Actuator (FCA) 10: Tracking Actuator (TRA) II: Thread Actuator (THA) 12: High Frequency Amplifier (RFA) TER: Tracking Error I Signal FER: Focus Error Signal • RF: Data Regeneration Signal (EFM signal) 1 5 : Focus servo control circuit (FCNT) 16: Track servo control circuit (TCNT) 17 : Microcontroller (SCNT) 1 8 , 1 9 , 2 0 : Selector 23 : Pulse generation circuit ( Hysteresis comparator) 25 : Host interface (HIS) 2 7 : Discrimination result signal 28 : Semiconductor device - 25 -