200809819 九、發明說明： 【發明所屬之技術領域】 本：明係關於光學記錄裝置之領域’尤其係關於經 以在讀取及寫人過程中（例如）與包含用於資料儲存之 個層之光學記錄載體協作的光學記錄裝置。本發明進一+ 係關於用於將光自光學記錄載體聚焦至光學記錄載體之: 選定資料儲存層上之構件及方法4言之，本發明係關於 -種在一光學記錄裝置中之一跳層方法，該跳層方法用於 自-包含用於資料健存之—第—層及—第二層之光學記錄 載體讀取或寫入該光學記錄載體，該光學記錄裝置包含一 聚焦迴路及-光學拾取單元（0PU)，該光學拾取單元^含 -包含-致動器透鏡且具有一視場深度之致動器總成。 【先前技術】 光學記錄裝置利用光在光學記錄裝置與一光學記錄載體 之間轉移資訊。經由一光學頭之資訊轉移可為一寫入過程 (其中將資料暫時或永久地添加至光學記錄載體）或一讀取 過私（其中自已儲存於光學記錄載體上之資料收集資訊）。 光學頭上之用於光學記錄裴置中之總體資訊可見於 Encyclopaedia of Optical Engineering (DOI： 10.1081/E- EOE 120009664, 2003, Marcel Dekker Inc·)”中。關於追蹤 致動器及伺服機構（特定言之，聚焦伺服機構）之段係與本 發明特殊相關。 藉由光學記錄裝置之光徑中之光學器件將光聚焦至一光 點且使光入射至光學記錄載體上，且該光點促進資訊之至 H9899.doc 200809819 及自光學記錄載體之鞋 聚隹之位& 通常具有一”最佳”最緊密 汆焦之位置及圍繞彼位置 .^ 視场冰度。該視場深度包令200809819 IX. INSTRUCTIONS: [Technical field to which the invention pertains] This: The field of optical recording devices is particularly relevant for the process of reading and writing, for example, and including layers for data storage. An optical recording device in which an optical record carrier cooperates. The present invention relates to a method for focusing light from an optical record carrier to an optical record carrier: a member and method for selecting a data storage layer. 4. The present invention relates to a layer jumper in an optical recording device. Method, the layer hopping method for reading or writing the optical record carrier from an optical record carrier comprising - a layer and a second layer for data storage, the optical recording device comprising a focus loop and - An optical pickup unit (0PU) that includes an actuator assembly including an actuator lens and having a field of view depth. [Prior Art] An optical recording device utilizes light to transfer information between an optical recording device and an optical record carrier. The information transfer via an optical head can be a writing process in which data is temporarily or permanently added to an optical record carrier or a read-through (where data is stored on an optical record carrier). The general information on optical heads used in optical recording devices can be found in Encyclopaedia of Optical Engineering (DOI: 10.1081/E-EOE 120009664, 2003, Marcel Dekker Inc.). Regarding tracking actuators and servos (specifically stated) The segment of the focus servo is particularly relevant to the present invention. The optical device in the optical path of the optical recording device focuses the light to a spot and causes the light to be incident on the optical record carrier, and the spot promotes information Up to H9899.doc 200809819 and the position of the shoe from the optical record carrier & usually has a "best" position of the closest focus and around the position. ^ field of view ice. The field of view depth
先區，該等光區在當氺 ^ S ^ ^ 、至一光學記錄載體上及自一光 子纪錄載體反射或繞射時 扣』用於先學纪錄裝置中之適 田口口貝之負訊。在此等區域 ^ ^ L , 飞外邛不會自入射至光學記錄 載體上之光獲得任衍古 > 于已环 、μ〆、 7有用—貝汛。通常藉由光學記錄裝置中 之光徑之準直儀透鏡組件 ^ 干隹疋視场冰度。準直儀透鏡增加 用於聚集之乾圍，尤1對 _ 八^於具有一咼數值孔徑之光學記錄 我置而吕。 因此遵循：必須準確執行光點相對於光學記錄載體之定 位。疗言之，光點必須位於一相對於待寫入或待讀取資料 之層之最佳位置處。在一光學記錄載體包含複數個層之狀 、下、，必射⑽選擇正確層。為保持人射至光學記錄載體 之資料層上之光點焦點對準且跟隨光學記錄載體之追蹤系 統，、接物鏡(負責將光聚焦至-點)必須靈敏地跟隨光學記 錄載體之私動。在光學記錄裝置中，必須靈敏地跟隨垂直 移動與徑向移動，且通常使用一藉由來自一具有一反饋控 制之伺服系統之伺服信號加以驅動的機電致動器來達成此 目的。此控制系統允許以最小誤差快速及穩定地追縱。為 促進'己錄載體之垂直移動之追蹤，接物鏡通常具有一安裝 於-致動器總成中之可移動透鏡組件，此透鏡則被稱作一 致動器透鏡。此之一實例為一近場光學記錄裝置。 對於聚焦控制’此處僅考慮光學記錄載體及致動器之垂 直移動。用於聚焦控制之已知的先前技術方法包括聚焦同 H9899.doc 200809819 步重複控制（聚焦SRC)，在聚焦同步重複控制（聚焦src) 中，監視光學記錄載體之若干旋轉期間之聚焦移動允許觀 察一重複圖案，該重複圖案資訊可接著用作一用於聚焦之 近期控制之前饋信號（feed forward signal)。一聚焦迴路 之使用亦係一控制光點之聚焦位置之常用方法。垂直聚焦 中所偵測之偏差導致充當一伺服迴路之輸入之誤差信號。 伺服迴路边使聚焦伺服控制即時跟隨光學記錄載體之任何 漂移。 亦可用於光學記錄裝置的係用於包含複數個層之光學記 錄載體的光點（及因此聚焦）之跳層之概念。在已知系統 中，使用致動器達成一自聚焦至光學記錄載體之—資料層 上至聚焦至另一資料層上之改變。首先在一特定資料層上 聚焦光學記錄裝置。致動器（及致動器透鏡）必須在垂直方 向中移動以便將聚焦移動至另一資料層。纟此移動期間， ，視由伺服機構所產生之聚焦誤差信號且當聚焦誤差信號 指不已到達所要的資料層時，所謂的跳層結束。致動器接 者+止移動且將透鏡相對於光學記錄載體維持在所需的位 置中。 此已知的跳層技術情況下之一問題在於：在一些光學記 錄農置中’諸如-具有一非常高數值孔徑之系統，光學組 件之視場深度非常有限，使得執行一跳層困難。為了具有 一資料層上之光點之準確聚焦，在跳層期間所產生之聚隹 誤差信號亦必須準確。對於一待形成之合適聚焦誤差信 號’該層必須在光點之可用視場深度内。若欲成功執行一 119899.doc 200809819 跳層貝光點之視場深度必須足以覆蓋兩個資料声。 在具有一有限視場深度、e。因此 層。 又之光子忑錄裝置中難以執行一跳 【發明内容】 本發明之-目標為藉由提供一跳層 具有有限視場深度之系統中跳層。 吏侍"夠在- 根據本發明之跳層方法包含以下步驟： 使用致動器總成在第一層上聚焦； 斷開聚焦迴路； ^將一視場深度自-第-位置重新定位至-第二位置，在 該第-位置中第一層被該視場深度重疊，在該第二位置中 第二層被視場深度重疊且第—層不被視場深度重疊； 移動致動器透鏡’直至在第二層達成聚焦為止； 閉合聚焦迴路。 藉由使用此方法’光學記錄裝置中之控制機構斷開聚焦 坦路以將聚焦位置維持在一為光學記錄載體之第一層設定 之位準。其間將光點之視場深度移動至第二層上之一適合 於達成聚焦之位置。一旦此得以進行，則可照常藉由閉合 聚焦迴路而繼續聚焦控制。 ，藉由斷開聚焦迴路之聚焦位置之此維持意謂將最靠近光 學記錄載體之透鏡（致動器透鏡）保持在距光學記錄載體之 表面之一正常工作距離處。在一些光學記錄裝置（例如， 一 BluRay系統）中，由於較高數值孔徑而使得自由工作距 離（透鏡與光學記錄載體之間的距離）比用於其他系統之自 119899.doc 200809819 由工作距離小。當BluRay系統焦點未對準時，透鏡命中磁 碟之機會得以増加。因此，根據本發明之方法亦提供 學記錄裝置與光學記錄載體之保護使其在跳層期 外損傷。 思 ”在該方法之-實施例中，光學記錄裝置包含一用於視場 深度之重新定位之準直儀透鏡。 、/該方法之另—實施例中’光學拾取單元包含用於視場 深度之重新定位之準直儀透鏡。 一準直儀透鏡係光學記錄裝置之光徑之一組件，其通常 用於使光束在沿著光徑朝用於聚焦之接物鏡行進時經定形 成-均勻準直光束。對於包含一具有一高視場深度（及因 此一較小數值孔徑）之準直儀透鏡之裝置，準直儀透鏡經 定位以使得"休息"位置中之致動器（及致動器透鏡）指向光 點之聚焦位置，以使得光點之聚焦位置在光學記錄載體之 兩個資料層之間。在不移動準直儀透鏡之情況下，系統可 在第-資料層或第二資料層上達成聚焦’因為光點之視場 深度足夠大足以覆蓋兩個資料層且可因此產生聚焦資訊以 用於進一步定位。對於一低視場深度準直儀透鏡，一固定 準直儀位置可僅允許光點之視場深度覆蓋一層且因此聚焦 不可此在兩個層上達成。在本發明中，容許準直儀透鏡移 動。在準直儀透鏡之移動期間，系統將釋放在起始資料層 上之聚焦。為了避免由於此所產生之問題，忽視其他聚焦 里測（諸如，聚焦迴路機構），直至充分移動準直儀從而允 許光點之視場深度接近第二資料層以致裝置可在第二資料 119899.doc -10- 200809819 層上達成聚焦為止。 在5亥方法之另—實施例中，該方法包含以下額外步驟： 使用用於聚焦同步重複控制之構件作為_用於在第一層 上t焦之補充控制； 在斷開聚焦迴路之後，僅制聚焦同步重複控制在光學 a己錄載體之一表面上聚焦； 十旦聚焦經朝第二層之俘獲重新定位時，使用聚焦同步 重複控制及閉合聚焦迴路聚焦， 使用用於聚焦同步重複控制之構件作為—詩在第二層 上聚焦之補充控制。 曰 聚…、SRC係、方法，該方法為：收集關於用於在一光學 記錄載體之若干旋轉中維持彼載體上之正確聚焦所需之聚 焦移動的資訊且接著使用所收集之資訊作為前饋資訊以影 響聚焦控制之近期移動。因為資訊係自一個別磁碟中直接 取=，所以其準確地遵循彼磁碟之唯一聚焦要求。因此， # f際上比將聚焦維持在一規定的固定位準且即時對所需 改變作出反應（如在聚焦迴路控制中發生的）更準確。藉由 利用聚焦SRC，跳層方法變得更有效且光學記錄裝置及光 學纪錄載體之碰撞損傷之風險得以進一步最小化。 本發明亦可應用於一光學記錄裝£。已知的光學記錄裝 置通常用於自一包含用於資料儲存之一第一層及一第二層 之光學兄錄載體讀取或寫入該光學記錄載體，該光學記錄 裝置包含一包含一致動器透鏡且具有一視場深度之致動器 總成，且進一步包含一經配置用於視場深度内之聚焦達成 119899.doc 200809819 之聚焦構件。視場深度内之聚焦達成確保待寫入或讀取之 層保持在㈣於用⑨寫入或讀取過程發生之光點之正確位 置中。 致動裔總成進一步包含 於重新定位視場深度以 、一用於維持視場深度 在光學s己錄裝置之一實施例中， 一跳層構件，該跳層構件包含一用 僅覆蓋第一層或第二層之第一構件 内之層上之聚焦的第二構件。 提供一跳層構件(其分離了移動視場深度與獨立維持一 設定位置位準兩個功能）允許當將聚焦之深度自一声移動 …層時光學記錄裝置之操作(例如，光學記錄载體之 旋轉）以-安全方式繼續。致動器透鏡之接近磁碟之定位 通常依賴於自位於聚焦區域之深度中之光所傳回之作號。 因此’若在不補償對信號之影響之情況下移動此區域，則 光學記錄載體與透鏡之間的接觸之可能性將得以增加。 在光學記錄裝置之另一眚始点丨I 直儀透鏡。 a例中，該第-構件包含一準 一平且儀透鏡係光學記錄裝 直之光彳k之一組件，苴播當 用於使光束在沿著光徑朝用於 … A —仏Θ、隹士， 1“、'之接物鏡進行時經定形 成-句勻準直光束。對於包含_ 一 卜，私a ^有阿視場深度（及因 此一較小數值孔徑）之準直儀 定# V义me ”从ώ 鏡之裒置，準直儀透鏡經 疋位以使侍”休息”位置中 致動器（及致動器透鐘）署妨决 點之聚焦位置，以使得光點Μ 勒為透鏡)置放先 兩個資料層之間。在不移動 己錄載體之 在弟一貧料層或第二資料層 糸、、无^ 成聚焦’因為光點之視場 119899.doc 200809819In the first zone, the zones are used to learn the vocal tracts in the recording device when 氺 ^ S ^ ^ , to an optical record carrier and when reflected or diffracted from a photonic record carrier. In these areas ^ ^ L , the outer sputum does not self-inject into the optical record carrier to obtain Ren Yangu > in the ring, μ 〆, 7 useful - Bellow. The field of view ice is typically dried by the collimator lens assembly of the optical path in the optical recording device. The collimator lens is added to the dry circumference for gathering, especially for the optical recording with a numerical aperture. Therefore, it is necessary to accurately perform the positioning of the spot relative to the optical record carrier. In other words, the spot must be at an optimal position relative to the layer of data to be written or to be read. In an optical record carrier comprising a plurality of layers, under, and (10) the correct layer is selected. In order to keep the spot of light incident on the data layer of the optical record carrier in focus and follow the tracking system of the optical record carrier, the objective lens (which is responsible for focusing the light to the - point) must be sensitive to the privacy of the optical record carrier. In optical recording devices, vertical movement and radial movement must be followed with sensitivity, and an electromechanical actuator driven by a servo signal from a feedback controlled servo system is typically used for this purpose. This control system allows for quick and stable tracking with minimal error. To facilitate tracking of the vertical movement of the recorded carrier, the objective lens typically has a movable lens assembly mounted in the actuator assembly, which lens is referred to as an actuator lens. An example of this is a near field optical recording device. For focus control, only the vertical movement of the optical record carrier and actuator is considered here. Known prior art methods for focus control include focusing with H9899.doc 200809819 step repeat control (focus SRC), in focus synchronous repeat control (focus src), monitoring focus movement during several rotations of the optical record carrier allows observation A repeating pattern, the repeating pattern information can then be used as a feed forward signal for focus control. The use of a focus loop is also a common method of controlling the focus position of a light spot. The deviation detected in vertical focus results in an error signal that acts as an input to a servo loop. The servo loop side causes the focus servo control to immediately follow any drift of the optical record carrier. Also useful in optical recording devices is the concept of a jumper layer of light spots (and thus focusing) of optical recording carriers comprising a plurality of layers. In known systems, an actuator is used to achieve a self-focusing change from the data layer of the optical record carrier to focusing onto another data layer. The optical recording device is first focused on a particular data layer. The actuator (and actuator lens) must move in the vertical direction to move the focus to another data layer. During this movement, the so-called hopping layer ends when the focus error signal generated by the servo is viewed and when the focus error signal indicates that the desired data layer has not been reached. The actuator connector + stops moving and maintains the lens in the desired position relative to the optical record carrier. One of the problems with this known layering technique is that in some optical recordings, such as - systems with a very high numerical aperture, the field of view of the optical components is very limited, making it difficult to perform a layer of hopping. In order to have an accurate focus of the spot on a data layer, the polyphonic error signal generated during the layer jump must also be accurate. For a suitable focus error signal to be formed 'this layer must be within the available field of view depth of the spot. To successfully execute a 119899.doc 200809819, the depth of field of the layered light spot must be sufficient to cover two data sounds. Has a limited field of view depth, e. So the layer. Further, it is difficult to perform one hop in the photon recording device. SUMMARY OF THE INVENTION The object of the present invention is to provide a layer jump layer in a system having a limited field of view depth by providing a layer of hops. The method of jumping layer according to the present invention comprises the steps of: focusing on the first layer using the actuator assembly; opening the focus loop; ^ relocating a field of view depth from the - position to a second position in which the first layer is overlapped by the field of view depth, in which the second layer is overlapped by the field of view depth and the first layer is not overlapped by the field of view depth; The lens 'until the focus on the second layer is reached; the focus loop is closed. By using this method, the control mechanism in the optical recording device opens the focus transistor to maintain the focus position at a level set for the first layer of the optical record carrier. The depth of field of the spot is moved to a position on the second layer that is suitable for achieving focus. Once this is done, the focus control can continue as usual by closing the focus loop. This maintenance by breaking the focus position of the focus loop means maintaining the lens (actuator lens) closest to the optical record carrier at a normal working distance from one of the surfaces of the optical record carrier. In some optical recording devices (eg, a BluRay system), the free working distance (distance between the lens and the optical record carrier) is lower than the working distance from 119899.doc 200809819 due to the higher numerical aperture. . When the focus of the BluRay system is misaligned, the chance of the lens hitting the disk is increased. Thus, the method according to the present invention also provides for the protection of the recording device and the optical record carrier from damage during the jump layer. In an embodiment of the method, the optical recording device includes a collimator lens for repositioning the field of view depth. In another embodiment of the method, the 'optical pickup unit includes depth of field of view. Realigned collimator lens. A collimator lens is an assembly of optical paths of an optical recording device that is typically used to shape a beam of light as it travels along an optical path toward an objective lens for focusing Collimated beam. For devices that include a collimator lens with a high field of view depth (and therefore a small numerical aperture), the collimator lens is positioned such that the actuator in the "rest" position ( And the actuator lens) is directed to the focus position of the light spot such that the focus position of the light spot is between the two data layers of the optical record carrier. Without moving the collimator lens, the system can be in the data layer Or focus on the second data layer 'because the field of view depth of the spot is large enough to cover the two data layers and can therefore generate focus information for further positioning. For a low field of view depth collimator lens, a solid The position of the collimator may only allow the depth of field of the spot to cover one layer and thus the focus may not be achieved on both layers. In the present invention, the collimator lens is allowed to move. During the movement of the collimator lens, the system will Release the focus on the starting data layer. To avoid problems due to this, ignore other focus measurements (such as the focus loop mechanism) until the collimator is fully moved to allow the field of view of the spot to approach the second data. The layer is such that the device can be focused on the second material 119899.doc -10- 200809819. In another embodiment of the 5H method, the method comprises the following additional steps: using the component for focusing synchronous repetitive control as _ Supplementary control for t-focus on the first layer; after the focus loop is turned off, only the focus-and-synchronous repetitive control is focused on one of the surfaces of the optical a recording carrier; the ten-dimensional focusing is captured and repositioned toward the second layer When using focus-and-synchronous repetitive control and closed focus loop focusing, using the component for focus-and-synchronous repetitive control as a supplement to poetry focusing on the second layer曰 ... , SRC system, method for collecting information about the focus movement required to maintain proper focus on a carrier in several rotations of an optical record carrier and then using the collected information as Feed forward information to influence the recent movement of focus control. Because the information is taken directly from a separate disk, it accurately follows the unique focus of the disk. Therefore, #f is better than the focus. The fixed level and immediate response to the desired change (as occurs in focus loop control) is more accurate. By using the focused SRC, the layer jump method becomes more efficient and the collision damage of the optical recording device and the optical record carrier The risk can be further minimized. The invention can also be applied to an optical recording device. The known optical recording device is typically used to read from an optical brother carrier containing one of the first and second layers of data storage. Taking or writing to the optical record carrier, the optical recording device comprising an actuator assembly including an actuator lens and having a field of view depth, and further Configured for comprising a depth of field of focus within the focus reached 119899.doc 200809819 member. Focusing within the field of view depth ensures that the layer to be written or read remains in the correct position of the spot that occurred during the 9 write or read process. The actuating assembly is further included in the method of repositioning the depth of field to be used to maintain the depth of field of view in an embodiment of the optical recording device, a layer jumper member comprising one covering only the first a focused second member on a layer within the first member of the layer or second layer. Providing a layer jumper member (which separates the moving field of view depth from independently maintaining a set position level) allows operation of the optical recording device when the depth of focus is moved from one layer (eg, optical record carrier) Rotate) Continue in a safe manner. The proximity of the actuator lens to the disk typically depends on the number returned by light in the depth of the focus area. Thus, if the area is moved without compensating for the effect on the signal, the likelihood of contact between the optical record carrier and the lens will increase. At the other point of the optical recording device, the illuminator lens is used. In a case, the first member comprises a component of a quasi-one flat and optically-recorded optical encoder, and the dip is used to make the beam along the optical path toward... A-仏Θ, gentleman , 1", 'the objective lens is formed to form a sentence uniform collimated beam. For the inclusion of _ a b, private a ^ has a field of view depth (and therefore a smaller numerical aperture) collimator # V义me"" from the 镜 mirror, the collimator lens is clamped so that the actuator (and the actuator through the clock) in the "rest" position can be used to determine the focus position, so that the spot is Μ Place the first two data layers for the lens). In the case of not moving the recorded carrier, the poorer layer or the second data layer, the focus is not focused because of the field of view of the light spot 119899.doc 200809819
珠度足夠大足以覆蓋雨個杳粗爲B 復蓋巾個貝科層且可因此產生聚焦資訊以 用於進-步定位。對於一低視場深度準直儀透鏡，一固定 準直儀位置可僅允許光點之視場深度覆蓋—層且因此聚焦 不可月b在兩個層上達成。因此在本發明中，容許準直儀透 鏡移動。在準直儀透鏡之移動期間，系統將釋放在起始資 料層上之聚焦。為了避免由於此所產生之問題，使用其他 聚焦量測（諸如，聚焦迴路機構）補償，直至充分移動準直 餘而允許光點之視場深度接近第二資料m統可在 第二資料層上達成聚焦為止。 在光子σ己錄裝置之另—實施例中，該第二構件包含一可 在-斷開設定與一閉合設定之間切換之聚焦迴路。 ::記錄裳置中之控制機構斷開聚焦迴路以將 維持在-為光學記錄载體之第一層設定之位準。 點之視場深度移動至第二層上 ：字先 w σ於違成聚焦之位 。-旦此得以進行’則可照常藉由閉 聚焦控制。 、峪而、.Μ績 =學記縣置之另_實施财，第：構件進 一用於聚焦同步重複控制之構件。 聚焦同步重複控制(聚焦SRC)係一方法 集關於用於在-光學記錄 /‘、、、·收 之正確节… '載體之右干疑轉中維持彼載體上 資訊作=:之聚焦移動的資訊，且接著使用所收集之 係自控制之近期移動。因為資訊 唯一聚隹要欠得，所以其準確地遵循彼磁碟之 求。因此，其實際上比將聚焦维持在一規定的 119899.doc -13- 200809819 固疋位準且即時對 中發生的）更準確。 效且光學記錄裝置 進一步最小化。 所需改變作出反應（如在聚焦迴路控制 藉由利用聚焦SRC，跳層方法變得更有 及光牟5己錄载體之碰撞損傷之風險得以 【實施方式】 二展示，光學記錄裝置之光徑之一簡化布局，如自目 刖技術狀態所已知的。 ^ 九之通過光徑之行程自光源（通常 為一雷射器1)開始。决、s 1 夕 先通過一光栅2，在光柵2中形成用於 夕種控制操作（諸如，徑 ^ 、、 位门追椒）中之子束。一光束分光器3 J ™準直儀透鏡4引導’且接著在使光入射至一光學 -己錄載體6之別使光通向_接物鏡5。在光學記錄裝置之一 讀取模式中，將與存在於光學記錄載體6上之資料相互作 =之光沿者光徑向後繞射’使光通過透鏡5及4及光束分光 器3 ’且接著由透鏡7將光聚焦至一偵測器8上。The bead is large enough to cover the rain upset to cover the Becko layer and thus generate focus information for further step positioning. For a low field of view depth collimator lens, a fixed collimator position can only allow the field of view depth of the spot to cover the layer and thus the focus cannot be achieved on both layers. Therefore, in the present invention, the collimator lens is allowed to move. During the movement of the collimator lens, the system will release the focus on the starting material layer. In order to avoid the problems caused by this, other focus measurement (such as focus loop mechanism) compensation is used until the collimation is fully moved and the field of view depth of the light spot is allowed to be close to the second data layer. Until the focus is reached. In another embodiment of the photon sigma recording device, the second member includes a focus loop that is switchable between a break-off setting and a close setting. The recording mechanism in the recording skirt disconnects the focus loop to maintain the level set for the first layer of the optical record carrier. The depth of field of the point moves to the second level: the word first σ is in violation of the focus position. - Once this can be done', it can be controlled by closed focus as usual.峪 峪 Μ Μ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Focused synchronous repetitive control (focusing SRC) is a method set for maintaining the information on the carrier in the correct section of the 'optical recording/', ,, and receiving... Information, and then use the recent movements that are collected from the control. Because the only gathering of information is owed, it accurately follows the requirements of the disk. Therefore, it is actually more accurate than maintaining the focus at a defined 119899.doc -13 - 200809819 solid level and occurring in the immediate alignment. The optical recording device is further minimized. Reacting the required changes (such as in the focus loop control by using the focused SRC, the layer jump method becomes more versatile and the risk of collision damage of the recorded carrier is achieved. [Embodiment] II shows the light of the optical recording device One of the paths simplifies the layout, as is known from the state of the art. ^ The journey of the light path begins with the light source (usually a laser 1). The first s1 passes through a grating 2, at A beamlet for use in the illumination control operation (such as a path, a gate) is formed in the grating 2. A beam splitter 3JTM collimator lens 4 directs 'and then causes the light to be incident on an optical- The recorded carrier 6 passes light to the objective lens 5. In one reading mode of the optical recording device, the data existing on the optical record carrier 6 is mutually circulated by the light of the light. Light is passed through the lenses 5 and 4 and the beam splitter 3' and then the lens 7 focuses the light onto a detector 8.
在先前技術系統中’準直儀透鏡4通常經固定於適當位 置中且用於使穿過路徑之光束準直，並確定一藉由接物鏡 、聚…、且用於光學s己錄載體6處之讀取及寫入過程之光 點（未圖示）的聚焦深度。 接物鏡5此處經展示為—單—透鏡’但其實際上可由兩 個或兩個以上組件形成。部分或所有接物鏡可位於-致動 :總成(未圖示)中。致動器總成係用於將接物鏡5定位於光 學記錄载體6之上之一最佳距離處，且根據光學記錄載體 表面令之波動移動透鏡。若光學記錄载體6包含一層以 上’則致動器總成亦用於在層之間移動聚焦位置。 119899.doc -14- 200809819 圖1說明—光學記錄裝置之光徑之-簡化型式。以通用 術語敍述该等組件。每一組 舉例而言，雷射器〗通常且有一視= 能的。 等等)而定之波吾二應用(CD、DVD、 /、在另-貫例中，偵測器8可採用不同 形式或可經为成若干偵測器段。 根據本發明之方法，藉以對於包含—低視場 冰X、干δ己錄裝置便於跳層。在習知裝置 場深度經設計以覆蓋一来興卞梓番雕 尤.，、占之視 談算…;“、 資料層以使得可在 _上達成聚焦。通常藉由準直儀透鏡確定視 :二二之：：士有一低視場深度之裝置，藉由視場深度 盍不再可能。根據本發明之方法提供接物 鏡或致動器透鏡之相對於弁學 邳釕於光予屺錄载體之穩定位置控制同 時允终將聚焦移動至另一資料展乂丄 貝枓層。百先光學記錄裝置聚焦 於一光學記錄載體之-資料層上，如正常操作中的 記錄裝置具有-低視場深度且因此當聚焦於此第—層： 時’不存在與-第二層之視場深度之任何重疊。借助於致 動器總成達成此聚焦21。習知地，使用一聚焦迴路進行聚 焦’在邊聚焦迴路中，描述光學記錄載體之構形之聚焦 號經即時饋人光學記錄裝置之飼服機構以調整接物鏡^ 學记錄載體之上的高度。藉由斷開此聚焦迴路22，透 光學記錄载體之上的高度保持穩定。雖然透鏡與光學： 載體之間的距離經保持穩定，但現可能在不釋放透亦 學記錄載體之上的高度之控制之情況下，使光點之視場μ 度遠離第一資料層且接近光學記錄載體上之另-資料層； H9899.doc 15 200809819 移動23。在視場深度現在第二層之鄰近地區中之情況下， 可能移動致動器以在第二層上達成聚焦24。接著可能閉合 聚焦迴路25，保持聚焦在第二層上之新位置，且藉此重新 獲得回應於光學記錄載體之構形中之改變而改變透鏡在光 學記錄載體之上的高度之功能。 圖3說明根據本發明之方法之另一實施例，該方法基於 上述結合圖2所描述之彼方法，該方法包含用於甚至更精 確地控制透鏡在光學記錄載體之上的高度之額外步驟。此 擴展方法包含如上述所概述之所有步驟21至25，及另外的 四個更多步驟。該等額外方法步驟係關於聚焦同步控制 (聚焦SRC)之使用’在聚焦同步控制（聚焦src)中，監視光 學記錄載體之若干旋轉之聚焦移動允許觀察一重複特性， 該重複特性資訊可接著用作—用於聚焦之"近期，，控制之前 饋信號。當聚焦SRC用作-用於一第一層上之聚焦之 控制3 1時，此聚焦控制對維持一 芦付正確位置及致動器透鏡盥 光學記錄載體之間的距離之任務添加了精確度。聚焦獻 接著用於當聚焦迴路經斷開Μ時維持此位置。此處存在優 =在於：聚焦移動係基於光學記錄載體之若干旋轉中之先 前聚焦移動的已得到的歷史’且因此為所需移動預料之實 ，回應而不是即時反應。因此聚焦SRC回應更準確。在朝 产弟二層重新定位聚焦且聚焦迴路再次經閉合的狀態下，在 ^層之俘獲期間亦使用聚焦SRC(33)。_旦已執行視場 ί隹H多動且在閉合!焦迴路之情況下光學記錄裝置現經 …—層上時’聚焦SRC可用作-額外聚焦量測34。 119899.doc -16- 200809819 圖4說明一根據本發明之裝置。光學記錄裝置通常包含 -光學拾取單元（_)41。此機構裝載致動器透鏡其可 形成裝置之接物鏡之一部分）及用於根據聚焦要求移動透 鏡以致可將聚焦維持於光學記錄載體47上所需的致動器總 成45。作為本發明，此致動器總成亦包含一跳層構件42。 跳層構件42包含兩個組件，gp，—用於重新定位視場深度 以僅覆蓋光學記錄載體之一第一層或一第二層之第一構件 43及一用於將聚焦維持於光學記錄載體〇之在視場深度内 之層上的第二構件44。第一構件43之一實例將係一具有一 低視場深度之準直儀透鏡。第二構件44之實例包括聚焦控 制迴路及聚焦SRC裝置。箭頭48指示自第二構件44輸入致 動器總成45以將聚焦維持於光學記錄載體叼之在視場深度 内之層上。實心箭頭49、49,及49"示意性指示光之沿著光 控且經引導至光學記錄載體47之通道。 圖5根據一實例進一步闡明本發明之方法，在該實例 中，將本發明應用於一包含兩個資料層之光學記錄載體。 在圖5A中’第一資料層51位於第二資料層52之下，該兩 層形成光學記錄載體（未圖示）之資訊儲存容量之一部分。 將一來自光學記錄裝置（未圖示）之光束53聚焦至第一資料 層5 1上之一光點54。藉由虛線區指示視場深度55，該視場 殊度55上可定位光點且仍然可用。實際上此係準直儀透鏡 (未圖示）之聚焦深度。自圖式顯然可見，聚焦範圍僅重疊 第一資料層5 1，且不重疊第二資料層52。所展示之此情形 將不意性表示光學記錄裝置在習知聚焦伺服控制（未圖示） H9899.doc 17 200809819 下之讀取模式中時光點與光學記錄裝置之相關配置（例 如，由虛線57指示）。 接著可能發生··需要光學記錄裝置存取第二資料層52以 (例如）讀取其他資料。光學記錄裝置不可直接達成第二資 料層52上之聚焦，因為視場深度55不覆蓋此區。圖5b說明 根據本發明之緊接著的用於允許第二資料層52可用之步驟 的聚焦範圍55及光點54之位置。斷開聚焦迴路（未圖示）以 相對於資料層維持當前聚焦位置中之硬體。接著將視場深 度55重新定位至_位置以使得視場深度抑蓋第二資料層 U。此係藉由調整準直儀透鏡（未圖示）之位置來加以進 订。自第-資料層51看來，光點54變得較不清楚且更為一 模糊點5 6。 :旦相對於第二資料層52正確定位了視場深扣，則可 在第二資料層52上達成聚焦。接著如㈣中所展示將光點 %㈣第二資料層52上’其在用於光學記錄裂置（未圖 不）之讀取及寫入操作之# 一 下之效恥且在再次由習知聚焦伺服（未 圖不）控制聚焦的正確定位中（由虛線W指示）。 【圖式簡單說明】 圖1展示一光學記錄裝置之光徑之示意性表示 圖2展示一根據本發明之第一方法。 圖3展示一根據本發明之第二方法。 圖4展示一根據本發明之裝置。 圖5(A、B及C部分）展 載體之方法。 示本發明之應用於 一雙層光學記錄 119899.doc -18- 200809819 【主要元件符號說明】 2 光栅 3 光束分光器 4 5 準直儀透鏡 6 接物鏡/透鏡 7 光學記錄載體 透鏡 8 偵測器 21 22 本發明之第一實施例之方法步驟 23 本發明之第一實施例之方法步驟 24 本發明之第一實施例之方法步驟 25 本發明之第一實施例之方法步驟 31 本發明之第一實施例之方法步驟 32 本發明之第二實施例之額外方法步驟 33 本發明之第二實施例之額外方法步驟 34 本發明之第二實施例之額外方法^驟 41 本發明之第二實施例之額外方法步驟 42 光學拾取單元（OPU) 跳層構件 43 第一構件 44 第二構件 45 46 致動器總成 致動器透鏡 119899.doc -19- 200809819 47 光學記錄載體 48 箭頭 49、49f、49，， 箭頭 51 第一資料層 52 第二資料層 53 光束 54 光點 55 視場深度/聚焦範圍 56 模糊點 57 虛線 119899.doc -20-In prior art systems, the 'collimator lens 4 is typically fixed in position and used to collimate the beam passing through the path, and is determined by an objective lens, a poly..., and for the optical s recording carrier 6 The depth of focus of the spot (not shown) at the reading and writing process. The objective lens 5 is shown here as a single-lens' but it may actually be formed from two or more components. Some or all of the objective lenses may be located in an -actuated: assembly (not shown). The actuator assembly is used to position the objective lens 5 at an optimum distance above the optical record carrier 6, and to move the lens in response to fluctuations in the surface of the optical record carrier. If the optical record carrier 6 comprises more than one layer, then the actuator assembly is also used to move the focus position between the layers. 119899.doc -14- 200809819 Figure 1 illustrates a simplified version of the optical path of an optical recording device. These components are described in general terms. For each set of examples, the laser is usually and has a view = energy. And so on) the Bobo 2 application (CD, DVD, /, in another example, the detector 8 can take different forms or can be passed into several detector segments. According to the method of the present invention, Including - low field of view ice X, dry δ recorded device is easy to jump layer. In the well-known device field depth is designed to cover a 卞梓 卞梓 雕 雕 , 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 This makes it possible to achieve focus on _. Usually by the collimator lens to determine the view: 22:: a device with a low depth of field, by field of view depth 盍 is no longer possible. According to the method of the present invention provides a mirror Or the actuator lens is controlled relative to the stable position of the optical recording carrier while allowing the focus to be moved to another data display layer. The optical optical recording device focuses on an optical recording. On the carrier-data layer, as in the case of normal operation, the recording device has a low field of view depth and therefore when there is a focus on this first layer: there is no overlap with the field of view depth of the second layer. The actuator assembly achieves this focus 21. Conventionally, using a focus back Focusing in the edge focusing loop, the focus number describing the configuration of the optical record carrier is fed through the feed mechanism of the instant optical recording device to adjust the height above the objective carrier. By turning this focus off The height above the optically transmissive record carrier is kept stable in loop 22. Although the distance between the lens and the optical: carrier remains stable, it is now possible to control the height above the optical record carrier without releasing it. Keeping the field of view of the spot away from the first data layer and close to the other data layer on the optical record carrier; H9899.doc 15 200809819 Moving 23. In the case where the depth of field is now in the vicinity of the second layer, it is possible Moving the actuator to achieve focus 24 on the second layer. It is then possible to close the focus loop 25, remain in focus at a new position on the second layer, and thereby regain a change in response to changes in the configuration of the optical record carrier The function of the height of the lens above the optical record carrier. Figure 3 illustrates another embodiment of the method according to the invention, the method being based on the method described above in connection with Figure 2, the method The method comprises an additional step for even more precisely controlling the height of the lens above the optical record carrier. This method of expansion comprises all of the steps 21 to 25 as outlined above, and four more further steps. The procedure is related to the use of focus synchronization control (focus SRC). In focus synchronization control (focus src), monitoring the focus movement of several rotations of the optical record carrier allows observation of a repeating characteristic, which can then be used as - for Focused "Recently, control the feed forward signal. When the focus SRC is used as the control for focusing on a first layer 3 1 , this focus control maintains a correct position and actuator lens optics The task of recording the distance between the carriers adds precision. The focus is then used to maintain this position when the focus loop is broken. There is an advantage here that the focus movement is based on the obtained history of the prior focus movement of several rotations of the optical record carrier and is therefore a realistic, expected response rather than an immediate response. Therefore focusing on the SRC response is more accurate. Focusing SRC (33) is also used during the capture of the layer in the state where the focus is repositioned on the second floor and the focus loop is closed again. The field of view ί隹H is multi-moving and the optical recording device is now on the ... 119899.doc -16- 200809819 Figure 4 illustrates a device in accordance with the present invention. The optical recording device usually includes an optical pickup unit (_) 41. This mechanism loads the actuator lens which forms part of the objective lens of the device and the actuator assembly 45 required to move the lens in accordance with the focus requirements so that focus can be maintained on the optical record carrier 47. As an inventive, the actuator assembly also includes a jumper member 42. The jumper member 42 comprises two components, gp, for repositioning the field of view to cover only the first member or a second layer of one of the optical record carriers and one for maintaining focus on the optical record The carrier is a second member 44 on the layer within the depth of field of view. An example of the first member 43 would be a collimator lens having a low field of view depth. Examples of the second member 44 include a focus control loop and a focus SRC device. Arrow 48 indicates that actuator assembly 45 is input from second member 44 to maintain focus on the layer of the optical record carrier 在 within the depth of field of view. The solid arrows 49, 49, and 49" schematically indicate the path of light along the light control and directed to the optical record carrier 47. Figure 5 further illustrates the method of the present invention in accordance with an example in which the present invention is applied to an optical record carrier comprising two data layers. In Fig. 5A, the first data layer 51 is located below the second data layer 52, which forms part of the information storage capacity of the optical record carrier (not shown). A light beam 53 from an optical recording device (not shown) is focused to a spot 54 on the first data layer 51. The field of view depth 55 is indicated by the dashed area, which can locate the spot and is still available. In fact, this is the depth of focus of the collimator lens (not shown). It is apparent from the figure that the focus range overlaps only the first data layer 5 1, and does not overlap the second data layer 52. The situation shown will not be indicative of the configuration of the optical spot and optical recording device in the read mode of the conventional focus servo control (not shown) H9899.doc 17 200809819 (eg, indicated by dashed line 57). ). Then it may happen that the optical recording device is required to access the second data layer 52 to, for example, read other data. The optical recording device does not directly achieve focus on the second material layer 52 because the field of view depth 55 does not cover this region. Figure 5b illustrates the focus range 55 and the position of the spot 54 for the next step of allowing the second data layer 52 to be used in accordance with the present invention. The focus loop (not shown) is turned off to maintain the hardware in the current focus position relative to the data layer. The field of view depth 55 is then repositioned to the _ position such that the field of view depth suppresses the second data layer U. This is done by adjusting the position of the collimator lens (not shown). From the first-data layer 51, the spot 54 becomes less clear and more blurred 56. Once the field depth decal is correctly positioned relative to the second data layer 52, focus can be achieved on the second data layer 52. Then, as shown in (4), the light spot %(4) on the second data layer 52 is stunned by the #reading and writing operation for optical recording cracking (not shown) and is again known by the conventional method. The focus servo (not shown) controls the correct positioning of the focus (indicated by the dashed line W). BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a schematic representation of the optical path of an optical recording device. Figure 2 shows a first method in accordance with the present invention. Figure 3 shows a second method in accordance with the present invention. Figure 4 shows a device according to the invention. Figure 5 (Parts A, B and C) shows the method of displaying the carrier. The invention is applied to a double-layer optical recording 119899.doc -18- 200809819 [Main component symbol description] 2 grating 3 beam splitter 4 5 collimator lens 6 objective lens / lens 7 optical record carrier lens 8 detector 21 22 method step 23 of the first embodiment of the invention step 24 of the first embodiment of the invention step 25 of the first embodiment of the invention step 31 of the method of the first embodiment of the invention Method step 32 of an embodiment Additional method step 33 of the second embodiment of the invention Additional method step 34 of the second embodiment of the invention Additional method of the second embodiment of the invention 41 The second embodiment of the invention Additional Method Steps 42 Optical Pickup Unit (OPU) Jumper Member 43 First Member 44 Second Member 45 46 Actuator Assembly Actuator Lens 119899.doc -19- 200809819 47 Optical Recording Carrier 48 Arrows 49, 49f , 49,, arrow 51 first data layer 52 second data layer 53 light beam 54 light spot 55 field of view depth / focus range 56 blur point 57 dashed line 1198 99.doc -20-