470949 五、發明說明（1) 本發明係有關一種光碟機光學頭之尋軌方法 透過一種學習型尋執方法，克服該光碟機因機構 馬達扭矩的變異，達到粗調尋執精確度。 按，光碟機的循執機構是雷射光束透過物鏡 ctive lens)追蹤碟片上的軌道與光學頭追隨物 成； 當要搜哥邊碟片之任一執道時，一般在作法 :透過兩動作’ 1 ).先移動光學頭至目標磁執附近 |再經由物鏡微調使雷射光束到達目標磁執，第一 I ·稱之粗調尋軌（rough seek);第二動作 2).稱 丨尋執(fine seek)。 欲達到該粗調尋軌精確度，係組裝一速度感 搭配回授控制達成，由於該速度感應器相當昂貴 符合成本考量。 又，請參閱第一圖，係一般光碟機1之機構 之馬達1 2係透過齒輪組或導螺桿1 3來，驅動光學頭 搜尋開始時，該微處理器（圖中未示）會送出一控 波形（如第二圖）驅動光學頭1 4，由靜止加速到等 減速至靜止。 設計者可自行訂定光學頭跨越幾軌（加速軌』 eleration track)後切換為最高速（max speed) 行駛，一般而言，此不會有任何問題發生 時間），然剩餘執數（減速執數，de •曰 丄 ion 多少才開始減速，並且在控制雷厭έ士击 π冤壓結束時順利循 ，其係 摩擦及 (0 b j e -鏡所完 上，係 ，2)· 動作1) 之微調 應器並 ，故不 ，其上 14，在 制電壓 速區再 t ? acc 以等速 加搜尋 track) 軌，以 470048 五、發明說明（2) 及準備執行微調.尋軌，是一件困難的事； 因摩擦力小的機構或是扭矩較大的馬達會造成粗調 尋軌過頭，摩擦力大的機構或是扭矩較小的馬達會造成 粗調尋軌不足； * 上述兩種情況皆會增加該微調尋軌所需執數，意即 ，增加整體的搜尋時間（A c c e s s t i m e )。470949 V. Description of the invention (1) The present invention relates to a tracking method of an optical head of an optical disc drive. A learning-type seeking method is adopted to overcome the variation of the motor torque of the optical disc drive due to the mechanism, and to achieve the coarse adjustment of the precision of the seek and seek. Press, the compliance mechanism of the optical disc drive is the laser beam through the objective lens (ctive lens) to track the track on the disc and the optical head to follow the object; when you want to search for any of the discs on the side of the disc, the general method is: Action '1). First move the optical head to the vicinity of the target magnet | Then fine-tune the objective lens to make the laser beam reach the target magnet. The first I is called rough seek; the second action is 2).丨 Fine seek. To achieve the coarse tracking accuracy, it is necessary to assemble a sense of speed with feedback control, because the speed sensor is quite expensive and meets cost considerations. Also, please refer to the first picture. The motor 1 2 of the mechanism of the general optical disc drive 1 is transmitted through the gear set or the lead screw 13. When the optical pickup is driven to start the search, the microprocessor (not shown) will send a The control waveform (as shown in the second picture) drives the optical head 14 to accelerate from stationary to constant deceleration to stationary. The designer can customize the optical head to cross several tracks (acceleration track) and switch to the maximum speed (in general, there will be no problem time), but the remaining number (deceleration) Count, de • How much does 丄 ion start to decelerate, and smoothly follow at the end of the control of thief fighter strikes π, it is friction and (0 bje-end of the mirror, system, 2) · action 1) The trimming reactor is parallel, so no, above it, in the voltage control speed zone, t t acc is used to track the track at constant speed), 470048 5. Invention description (2) and preparing to perform trimming. Tracking is a piece of Difficult things; due to the mechanism with low friction or the motor with high torque will cause the coarse tracking to overshoot, the mechanism with high friction or the motor with low torque will cause the coarse tracking to be insufficient; * the above two cases Both will increase the number of executions required for the fine-tuned tracking, that is, increase the overall search time (A ccesstime).
緣是，本發明人乃特潛心的研究並配合學理之運用 ，以設計出一學習型尋執方法，以克服光碟機因機構摩 擦及馬達扭矩的變異，達到與裝設速度感應器同樣的粗 調尋執精確度。 本發明之一目的，在於提供一種光碟機光學頭尋執 方法，其係在搜尋碟片之執道的動作中，利用微調尋軌 的軌數大小及方向來調整粗調尋執之控制電·壓波形，如 果微調尋執的方向與粗調尋執相同，且該微調尋執的軌 數超過設計容忍誤差，則減速軌數會減少一個學習間距 ，反之，如果微調尋軌的方向與粗調尋軌相反，且該微 調尋軌的軌數超過設計容忍誤差，則減速執數會增加一 個學習間距。The reason is that the inventor has devoted his research and cooperated with the application of science to design a learning-type seek-to-find method to overcome the variation of the optical disc drive due to the friction of the mechanism and the torque of the motor, and achieve the same thickness as the speed sensor. Tuning accuracy. An object of the present invention is to provide a seek method for an optical head of an optical disc drive, which is used to adjust the control power of the coarse seek seek during fine-tuning of the track number and direction of a seek disc. Squeeze the waveform. If the direction of the fine tuning seek is the same as that of the coarse tuning, and the number of tracks of the fine tuning seek exceeds the design tolerance, the number of deceleration tracks will decrease by a learning interval. On the contrary, if the direction of the fine tuning seek and the coarse Tracking is reversed, and the number of tracks of the fine-tuned tracking exceeds the design tolerance error, the deceleration number will increase a learning interval.
本發明之另一目的，在於提供一學習型光學頭尋軌 方法，藉其設計，俾加速軌數與最高速亦可列入學習參 數以求最佳化。 本發明之又一目的，在於提供一學習型光學頭尋軌 方法，由於其不用裝設速度感應器於光碟機之循執機構 中，故在製程上可大幅降低成本。Another object of the present invention is to provide a learning optical head tracking method. By its design, the acceleration track number and the maximum speed can also be included in the learning parameters for optimization. Another object of the present invention is to provide a learning optical head tracking method. Since it does not need to install a speed sensor in the compliance mechanism of the optical disc drive, the cost can be greatly reduced in the manufacturing process.
第5頁 470949 五、發明說明（3) 為了，貴審查委員能更進一步了解本發 及技術内容，含軎灸明丨” τ Λ 明♦閱以下有關本發明之詳細說 ，然而所附圖或# I ^ 口式僅么、芩考與說明用，並非用來 加以限制者。 + ^ 本毛月係一種光碟機光學頭之尋軌方法， 哥碟片之&道的動作中’利用計數微調尋軌的 及方向來凋整粗調尋軌之電壓波形，如第三圖 請參閱第三圖，一開始，移動該光學頭至 附近^調尋執）3卜計數微調尋軌的軌數32, 執數是否超過該微調尋執設計的容忍誤差（f i tolerance)? 33° 若未超過，則結束工作；若超過，則判別 方向是否相同於粗調尋執？ 34。 若微調尋執的方向與粗調尋執相同，則減 減少一個學習間距（1 e a r n i n g g a p彡3 5 ; 若微調尋執的方向與粗調尋軌相反，則減 增加一個學習間距3 6。 因此，在搜尋碟片執道動作發生時，它會 覆學習’直至微調尋軌的執數落入設計容忍誤 習動作方停止，如果因溫度有變化，而造成微 軌數超過設計容忍誤差，則學習動作又會在搜 重新開始。 事實上加速執數（acceleration track)與 max Speed)亦可列入學習參數以求最佳化。 明之特徵 明與圖式 對本發明 其係在搜 軌數大小 〇 目標磁軌 判別減速 n e seek 微調尋軌 速執數會 速執數會 如此地反 差之内學 調尋軌的 尋動作中 农两迷（ 470949 五、發明說明（4) 綜上所述，透過本發明學習型光學頭尋軌方法，具 有如下述之特點： (1 ).可克服該光碟機因機構摩擦及馬達扭矩的變異 ，達到與裝設速度感應器同樣的粗調尋執精確‘度。 (2 ).由於其不用裝設速度感應器於光碟機之循執機 構，因而在製程上可大幅降低成本。Page 5 470949 V. Description of the invention (3) In order for your review committee to further understand the present invention and its technical content, including the moxibustion and moxibustion 丨 "τ Λ Ming ♦ read the following detailed description of the present invention, but the attached drawings or # I ^ The verbal mode is only used for testing, explanation and explanation, not for restricting it. + ^ This hairy month is a tracking method of the optical head of the optical disc drive. Fine-tune the tracking and direction to adjust the voltage waveform of the coarse-tuned tracking. See the third picture for the third picture. At the beginning, move the optical head to the nearby area. 32. Does the number of executions exceed the fi tolerance of the fine tuning design? 33 ° If it does not exceed, the work is terminated; if it exceeds, the determination direction is the same as that of the coarse tuning. 34. If fine The direction is the same as that of the coarse tuning, and a learning gap is reduced (1 earninggap 彡 3 5; if the direction of the fine tuning and seeking is opposite to that of the coarse tuning, then a learning gap is reduced by 3 6. Therefore, when searching for a disc When the Tao action happens, it will repeat 'Until the number of fine-tuning tracking falls into the design tolerance misuse action, it stops. If the number of micro-tracks exceeds the design tolerance error due to temperature changes, the learning action will start again in search. Acceleration track) and max Speed) can also be included in the learning parameters for optimization. The characteristics of the Ming and the schema of the present invention are the number of tracks to be tracked. The tracing action of the internal tracking adjustment in such a contrast will be as follows (470949 V. Description of the invention (4) In summary, the tracking method of the learning optical head of the present invention has the following characteristics: ( 1). It can overcome the variation of the mechanism friction and motor torque due to the mechanism of the optical disc drive, and achieve the same precision of coarse adjustment and seek as the speed sensor. (2). Because it does not need to install the speed sensor in the optical disc drive. Compliance organization, which can significantly reduce costs in the process.
故，本發明之專利申請符合發明要件，爰依專利法 提出申請之，請詳查並准予本案，以保障發明者之權益 ，若 鈞局之貴審查委員有任何的稽疑，請不吝來函指 示。 按，以上所述，僅為本發明的最佳之一具體實施例 ，惟本發明之方法特徵並不侷限於此，任何熟悉該項技 藝者在本發明之領域内，可輕易思及之變化·或修飾皆可 涵蓋在以下本案之專利範圍。Therefore, the patent application of the present invention meets the requirements of the invention. If the application is made in accordance with the Patent Law, please check and grant this case in detail to protect the rights and interests of the inventor. . According to the above, it is only one of the best specific embodiments of the present invention, but the method features of the present invention are not limited to this. Anyone skilled in the art can easily consider the changes in the field of the present invention. · Or modifications can be covered by the patent scope of this case.
第7頁 470340 圖式簡單說明 第一圖係一般光碟機之機構圖。 第二圖係粗調尋執控制電壓之波形圖。 第三圖係本發明利用微調尋軌的軌數大小及方向來 調整粗調尋軌之流程圖。 ‘ 圖號及其名稱之說明 1光碟機 11 物鏡 12 馬達 13 導螺桿Page 7 470340 Brief description of the diagram The first diagram is the mechanism diagram of a general optical disc drive. The second figure is a waveform diagram of the coarse tuning seek control voltage. The third figure is a flow chart of the present invention for fine-tuning the number and direction of tracks to adjust the coarse-tracking. ‘Explanation of drawing numbers and their names 1 CD player 11 Objective lens 12 Motor 13 Lead screw
14 光學頭14 optical head
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