：/c 九、發明說明· 【發明所屬之技術領域】 本毛月:關曰於_斷數位多功能光碟種類的方法 與裝置，且彳寸叙關於—種判斷分辨DVD_R0M、 DVD-、以及 DVD+ 【先前技術】 光碟片的方法與裝置。 .時下已經非常普及的數位多功能光碟（ versatile disc ’簡稱為DVD) ’除了只能用來讀取資料的 (後面的“ROM”代表唯讀式記憶體，也就是㈣〇吻 memory)以外，也有可供燒錄資料的種類。而可供燒錄 資料的DVD，因為規格不同，又分為DVD 一與DVD+兩 種。目前大部分的DVD光碟機都相容於多種不同規格， 因此判斷使用者放入的光碟片種類，就成為一項重要技 術。 目前的方法是使用預設槽擺動訊號（pre_gr〇〇ve wobble signal，以下簡稱擺動訊號）内含的位置資訊來判 斷DVD種類。根據DVD的規格，DVD_R〇M沒有擺動 訊號，而DVD—與DVD+除了—般執道之外，還會有擺 動訊號，其來源請芩照圖1。當光碟片在DVD光碟機裡 面旋轉時，讀寫頭101會沿著於執道102向外滑出，如圖 所示’此時讀寫頭101的感光二極體(ph〇t〇 di〇de IC)排列 如圖1所不’則A、B、C、D四個區域，會各自感應到 不同強度的訊號，而擺動訊號係根據如下之公式獲得： G X [ gl X (A + D) - g2 X (B + 1307494 13830twf.doc/c 其中G、81與g2皆為可調整之增益值(gain)。 DVD-# DVD+各有―套定位方式是混在擺動訊號 之内’可㈣邏輯運算電路經_後取得目前位置資訊。 ^緣示DVD+的擺動訊號’在擺動訊號2〇ι之中含有 夕個相2〇2，此擺動訊號經邏輯運算電路解譯後便可 以取得位置資訊。至於DVD—_動訊號請參照圖3， ，擺動訊號301之中含有多個凸紋預設孔(land pre_pit) 〇2，同理，位置資訊可經由邏輯電路解譯後取得。由圖 2，圖3可知，DVD+與DVD—的擺動訊號不同，邏輯 運算電路的解譯功能也不同，因此可用來判斷DVD種類。 土圖4為目前使用的數位多功能光碟種類判斷方法的 叫柽圖。首先步驟402會先猜測使用者放入的光碟片為 ^^+、，因此設定DVD+使用的相關參數，然後步驟404 f言試讀取目前位置資訊，如果讀取成功，步驟406會判 斷光碟片的種類為DVD+。否則，接下來的步驟4〇8 ^猜 測光碟片為DVD—，並設定DVD —使用的相關參數，然 後步驟410會再度嘗試讀取目前位置資訊，如果成功，步 驟412會判斷光碟片的種類為DVD—,否則步驟々μ會 列斷光碟片的種類為DVD-ROM。 這種方法的缺點是DVD+與DVD —使用的相關參 石文，必須能涵蓋大多數的光碟片，特別是燒錄過資料的光 碟片，上面的位置資訊品質會變差，經常容易誤判。因此， ，們需要一種方法來解決這個問題，以提高正確判斷數位 夕功能光碟種類的機率。 13074雜 ο— 【發明内容】 本發明提供一種數位h 克服先前技術的缺點，解h 〜種類判斷方法， 本發明也提供1數 =:;的:題。 克服先前技術的缺點，括& 他光碟種類判斷裝置， 的機率。 “正確判斷數位多功能光碟種 以 為達成上述及其他内容， 出-種數位多功能光碟種類 ^較佳實施例提 設定相闕參數，自—數位多 〃法，其主要步驟包括· 設定除頻因子，以除頻因 光碟g取擺動訊號，並 J:光碟機之絲科料綠頻。然後， 時間為單位時間，計算 夕力月b先碟旋轉-圈所需之 據除頻後之擺動訊號之頻率擺動訊號頻率。最後，根 種類。 g手呵低，判斷數位多功能光碟之 另提出’本發明之又一較佳實施例 装置，自一數你夕先碟種類判斷裝置，包括：-掏取 數位化，並輸出光碟掏取—擺動訊號’將擺動訊號 接於上、之擺動訊號；以及-判斷裝置，辆 數位多1；能光根據擺動訊號之頻率，判斷並輸出 一廣、、念。口 ±業種頒。其中，上述之判斷裝置更包括： 之it 於上述之判斷敦置之輸入端’接收數位化 ，遠除擺動訊號之雜訊，並輸出慮除雜訊後之 訊後之擺動^ 1 於上述之雜器’根據$、除雜 犯。唬，5十异亚輪出擺動訊號之頻率；以及一判 1307494 】3830twf_d〇c/c 辦益’轉接於上述 π 判斷並輸㈣#，i , S ’根據擺動訊號之頻率高低， 抱出數位多功能光碟之種類。 鋪軸崎之頻率高低，_數位多功 所有^«=此可魏先前技術容㈣判與不§提供適用 種類的機i。貝㈣缺點’提高正確判斷數位多功能光碟 顧总=5襄本發明之上述和其他内容、频和優點能更明 二 下文特舉較佳實施例，並配合所附圖式，作詳細 §兄明如下。 【實施方式】 〜本發明是利用數位多功能光碟（digital versatile disc， 1稱為DVD)之擺動訊號(w〇bbie他㈣)頻率，來區分 DVD-ROM (後面的“R〇M”代表唯讀式記憶體，也就是 =ad only memory )、DVD—、與DVD+這三種數位多功 能光碟。下面特舉實施例，以說明本發明提出的數位多功 能光碟種類判斷方法與裝置。 不同種類的DVD有不同的擺動訊號頻率，在資料傳 輸倍率(data transfer rate)為一倍速（13仍KB/s)的情況下， 以光碟機主軸馬達(spindle motor)帶動光碟片旋轉一圈的 時間為單位時間，則；〇VD+的擺動訊號頻率為 817_5KHz ’ DVD —的擺動訊號頻率為14〇.6ΚΗζ，而 DVD-ROM並無任何擺動頻率記載於碟片上，因此頻率為 零。這個頻率上的差別，正是本發明的判斷依據。 13074¾ Otwf.doc/c 在光碟機等裝置中，實際上的頻率計算較為複雜， 由於光碟機大多採用固定角速率（constant angular velocity，簡稱為CAV )模式，因此光碟片最内圈與最外 圈的資料傳輸倍率顯然不同，也就是說，DVD—與DVD+ 的擺動訊號頻率會是一個範圍，而非單一數字。此外在分 析擺動訊號的邏輯電路之中，可能會有一個「除頻」動作， 就是以一個固定的除頻因子，降低擺動訊號的頻率，例如 除頻因子若為1/2,則除頻後的擺動訊號頻率就是原來的 1/2。顯然地’在DVD+最内圈讀取到的擺動訊號頻率應 為. 817·5ΚΗζχ最内圈資料傳輸倍率X除頻因子 在DVD+最外圈讀取到的擺動訊號頻率應為： 817.5KHzx最外圈資料傳輸倍率X除頻因子 同理’在DVD —最内圈讀取到的擺動訊號頻率應為： 140.6KHzx最内圈資料傳輸倍率X除頻因子 在DVD—最外圈讀取到的擺動訊號頻率應為： 140.6ΚΗζχ最外圈資料傳輸倍率X除頻因子 在本實施例中，光碟機是以四倍速的CAV模式旋轉， 因此最内圈的資料傳輸倍率大約為2倍，最外圈的資料傳 輸倍率大約為4倍，而除頻因子為1/2。經過簡單的計算 之後可以得知，DVD+的擺動訊號頻率範圍為800KHz〜 1·6ΜΗζ ’ DVD —的擺動訊號頻率範圍為14〇KHz ~ 280KHz ’而DVD-ROM為〇，如圖5所示。實際上， DVD-ROM可能因為真實環境的誤差而出現微小的擺動訊 13074¾ 〇twf.doc/c 號頻率這不會影響本發明的判斷。 由® 5可知’在固定轉速的 Γ率範圍並無重叠，而且相隔甚遠， 本實施例包;了=:=造成誤判。 都已經將除頻列入考慮 數子與細節 果不除頻，图$从辟去以不上化個動作可以省略。如 影塑，在二壯^動讯號頻率範圍必須去掉除頻因子的 々曰在下面的褒置架構圖（圖貝^千的 除頻的相關步驟。對熟f此 i也必須去掉 應該不難做到。 貝$的人而&，這些調整 圖6為本實施例的裝置 置6〇1會從數位多功能光碟_二‘圖='榻取裝 化之後，輸出至判斷裝置：。判斷= 會根據擺動訊號607的頻率， 句岍衣置602 類，並，出光碟的種類訊號61〇。斷數位夕功能光碟的種 會接中包含了幾個元件’首先，遽波器6。3 後，輸出濟=Ϊ=^607，據除擺動訊號的雜訊之 訊不大或Μ料酬當然在雜 以預設的除二器：)將 頻:十:輸出除頻後的擺動訊號給計頻器60S。 中並未⑼5會接收柄機的主㈣達（圖 )所發送的轉速訊號_，並根據轉速訊號 c/c 13074?4_。 ouy P u i ％違，數位多功能光碟_ - _ f _ ^位時間，計算除頻後的擺動訊號頻率，：:： : 輸出至_器_。至於啟動訊鍵二將=车: 頻器605何時開始計算頻率。最後’判 頻器，輸出的頻率高低，二：606會根據計 率範圍，判斷數位夕: θ 、、曰不的各種光碟片頻 號610。 ’功月匕先碟的種類，並輪出光碟種類訊 設定：關上本只：例的方法流程圖。首先，步驟7〇2會 號數位多功能辆操取摄-以設定為1/2)，步驟曰又^'頻因子’（例如上述例子中可 接下來，切Η因子《動訊號除頻。 光碟旋轉-顺達帶動數位多功能 訊號頻率。 、、曰’’、、單位4間’計算除頻後的擺動 口十鼻出頻率·夕彡么 止^ 號頻率，列斷光碟712會根據除頻後的擺動訊 判斷數位多功能二、。⑹果頻率為零’步驟m會 140KHz與280KH、、颁為DVD_R0M。如果頻率位於 碟的種類為Dvd〜7 ’步驟716會績數位多功能光 之間，步驟718合_^頻率位於_KHz與1.6MHz 在此，針對/功能^多魏光碟的種類為DVD+。 除頻因子是2/23或in 、片疋DVD_^DVD—，常用之 未能順利判斷出多功:即在使用某種除頻因子後，若 除頻因子來計算。b先碟片之内容，便可以使用另一種:/c IX, invention description · [Technical field of invention] This month: the method and device for _ break digital versatile disc type, and 彳 叙 关于 — — DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD DVD [Prior Art] Method and apparatus for optical discs. The versatile disc ( versatile disc 'abbreviated as DVD) that is already very popular nowadays can be used only for reading data (the latter "ROM" stands for read-only memory, that is, (four) kisses memory) There are also types of materials that can be burned. DVDs that can be burned are divided into DVD and DVD+ because of different specifications. At present, most DVD players are compatible with a variety of different specifications, so it is an important technology to judge the type of discs that users put in. The current method is to determine the type of DVD by using the position information contained in the pre-gr〇〇ve wobble signal (hereinafter referred to as the wobble signal). According to the specifications of the DVD, the DVD_R〇M has no wobble signal, and the DVD—in addition to the DVD+, will have a swing signal. The source is shown in Figure 1. When the optical disc rotates inside the DVD player, the head 101 will slide outward along the obstruction 102, as shown in the figure 'the photosensitive diode of the head 101 at this time (ph〇t〇di〇) De IC) is arranged as shown in Figure 1. The four regions A, B, C, and D will each induce different strength signals, and the swing signal is obtained according to the following formula: GX [ gl X (A + D) - g2 X (B + 1307494 13830twf.doc/c where G, 81 and g2 are adjustable gain values. DVD-# DVD+ each has a set of positioning methods that are mixed in the swing signal's (four) logic operation The circuit obtains the current position information after the _. The edge of the DVD+ sway signal ' contains a 夕 phase 2 〇 2 in the sway signal 2 〇 ι, and the oscillating signal can be obtained by the logic operation circuit to obtain the position information. DVD__Motion number, please refer to Figure 3. The swing signal 301 contains a plurality of land pre-pits 〇2. Similarly, the position information can be obtained by logic circuit interpretation. Figure 2, Figure 3 It can be seen that the DVD+ and DVD-swing signals are different, and the logic operation circuit has different interpretation functions, so it can be used to judge The type of DVD. The soil map 4 is the current multi-function disc type judging method. First step 402 will first guess the user put the disc into ^^+, so set the relevant parameters of the DVD+, then Step 404 f test to read the current location information, if the reading is successful, step 406 will determine the type of the optical disc is DVD+. Otherwise, the next step 4〇8 ^ guess the optical disc is a DVD - and set the DVD - used Related parameters, then step 410 will try to read the current location information again. If successful, step 412 will determine that the type of the optical disc is DVD-, otherwise the step 々μ will list the type of the optical disc as a DVD-ROM. The disadvantage is that DVD+ and DVD-related stone materials must cover most of the discs, especially the discs that have been burned. The quality of the above information will be worse and often misjudged. Therefore, we need A method to solve this problem is to improve the probability of correctly judging the type of the digital function disc. 13074杂ο - [Summary] The present invention provides a digital h to overcome the first Technical disadvantages, solution h ~ type judgment method, the present invention also provides a number of =:;: The problem overcomes the shortcomings of the prior art, including the probability of his disc type judging device. "Correct judgment of digital multi-function disc type In order to achieve the above and other contents, a variety of digital versatile disc types are preferred. The preferred embodiment provides a relative parameter, a self-digit multi-turn method, and the main steps include: setting a de-frequency factor to remove the frequency by the optical disc g Swing signal, and J: the green frequency of the disc machine. Then, the time is the unit time, and the frequency of the frequency swing signal of the swing signal after the frequency division is calculated for the first rotation of the disk. Finally, the root type. The g-hand is low, judging the digital multi-function disc, another device of the preferred embodiment of the present invention, from the count of your disc type judging device, including: - capturing digital, and outputting the disc capture - The oscillating signal 'connects the oscillating signal to the upper oscillating signal; and - the judging device, the number of the vehicle is more than one; the illuminating light judges and outputs a wide and a sensation according to the frequency of the oscillating signal. The mouth is judged by the industry. Wherein, the judging device further comprises: receiving the digitization of the input terminal of the judging device, removing the noise of the wobble signal, and outputting the wobble after the noise is removed. Miscellaneous 'according to $, in addition to miscellaneous.唬, the frequency of the swing signal is 5 and 10, and the judgment is 3,074,494] 3830twf_d〇c/c 办益'transfer to the above π judgment and lose (four)#,i , S ' according to the frequency of the swing signal, take out The variety of digital versatile discs. The frequency of the paving axis, _ digital multi-function all ^«= this can be the prior technical capacity (four) judgment and not provide the applicable type of machine i. (4) Disadvantages 'Improve the correct judgment of the digital multi-function discs. The above and other contents, frequencies and advantages of the present invention can be more clearly exemplified below. See below. [Embodiment] The present invention distinguishes a DVD-ROM by using a digital versatile disc (1) called a wobbler signal (w〇bbie (4)) frequency (the latter "R〇M" stands for only Read-type memory, that is, =ad only memory), DVD-, and DVD+ are three kinds of digital versatile discs. The following embodiments are provided to illustrate the method and apparatus for judging the digital multi-function optical disc type proposed by the present invention. Different types of DVDs have different oscillating signal frequencies. When the data transfer rate is one speed (13 KB/s), the optical disk spindle motor drives the optical disk to rotate one revolution. The time is unit time; then; the VD+ swing signal frequency is 817_5KHz 'DVD—the swing signal frequency is 14〇.6ΚΗζ, and the DVD-ROM does not have any swing frequency recorded on the disc, so the frequency is zero. This difference in frequency is the basis for the judgment of the present invention. 130743⁄4 Otwf.doc/c In the CD player and other devices, the actual frequency calculation is more complicated. Since most of the optical disc drives adopt the constant angular velocity (CAV) mode, the innermost and outermost circles of the optical disc are used. The data transfer magnification is obviously different, that is, the DVD-and DVD+'s wobble signal frequency will be a range rather than a single number. In addition, in the logic circuit for analyzing the wobble signal, there may be a "divide frequency" action, which is to reduce the frequency of the wobble signal by a fixed frequency dividing factor. For example, if the frequency dividing factor is 1/2, the frequency is divided. The swing signal frequency is 1/2 of the original. Obviously, the frequency of the wobble signal read in the innermost circle of DVD+ should be. 817·5ΚΗζχ innermost data transmission magnification X frequency division factor The frequency of the wobble signal read in the outermost circle of DVD+ should be: 817.5KHzx outermost The circle data transmission magnification X is the same as the frequency factor. The frequency of the wobble signal read on the DVD - the innermost circle should be: 140.6KHzx innermost data transmission magnification X frequency division factor in the DVD - the outermost circle read the swing The signal frequency should be: 140.6 ΚΗζχ outermost circle data transmission magnification X frequency division factor In this embodiment, the optical disk drive is rotated in the four-speed CAV mode, so the data transmission magnification of the innermost circle is about 2 times, the outermost circle The data transfer rate is approximately 4 times and the frequency division factor is 1/2. After a simple calculation, it can be known that the DVD+ wobble signal frequency range is 800KHz~1·6ΜΗζ ’ DVD—the wobble signal frequency ranges from 14〇KHz to 280KHz′ and the DVD-ROM is 〇, as shown in Figure 5. In fact, the DVD-ROM may have a small amount of swaying due to errors in the real environment. This does not affect the judgment of the present invention. It can be seen from ® 5 that there is no overlap in the range of the fixed speeds, and they are far apart, this embodiment packs; === causes misjudgment. All the frequency has been included in the consideration of the number and details. If the frequency is not removed, the figure can be omitted from the move. Such as shadow plastic, in the two strong signal frequency range must be removed from the frequency factor of the following structure diagram (Figure 2 ^ thousand of the frequency of the relevant steps. For the cooked f this i must also be removed should not It is difficult to do. The person of the $$ and the adjustments of Figure 6 are the devices of the present embodiment. The device will be outputted to the judging device after the digital versatile disc _ two 'picture = 'the couch is loaded. Judgment = According to the frequency of the wobble signal 607, the sentence is set to 602, and the type of the disc is 61. The number of the discs of the digital disc contains several components 'First, chopper 6. After 3, the output is Ϊ=Ϊ=^607, according to the noise of the oscillating signal, the news is not large or the reward is of course mixed with the preset two-way:) frequency: ten: output sway signal after frequency division Give the frequency counter 60S. In the middle, (9)5 will receive the speed signal _ sent by the main (4) of the handle (Fig.), and according to the speed signal c/c 13074?4_. Ouy P u i % violation, digital multiplex disc _ - _ f _ ^ bit time, calculate the frequency of the oscillating signal after frequency division, ::: : Output to _ _. As for the start button 2 will = car: When the frequency converter 605 starts to calculate the frequency. Finally, the frequency of the output is high and low. Secondly, 606 will judge the number of optical discs 610 according to the range of the calculations: θ, 曰. 『Power month 匕 first disc type, and turn out the disc type message setting: Close the flow chart of this only: example. First, step 7〇2 will number the multi-function car to take the camera - set to 1/2), step 曰 and ^ 'frequency factor' (for example, in the above example, the next factor, the cut-off factor "signal number. Disc rotation - Shunda drives the digital multi-function signal frequency. , , 曰 ' ', and 4 units 'calculate the frequency of the swing port after the frequency of the nose, the frequency of the nose, the number of the night, the number of the ring, the number of the broken disk 712 will be divided according to After the frequency, the swing signal judges the digital multi-function. (6) The frequency is zero. Step m will be 140KHz and 280KH, and will be awarded as DVD_R0M. If the frequency is located in the disc type is Dvd~7 'Step 716 will be the number of multi-function light In the meantime, the step 718 is _^ frequency is located at _KHz and 1.6MHz. Here, the type of the multi-wei disc is DVD+. The frequency-removing factor is 2/23 or in, and the film is DVD_^DVD-, which is commonly used. Successfully judged the multi-function: that is, after using some sorting factor, if the frequency factor is used to calculate. b first the content of the disc, you can use another
Otvvf.d〇c/c 由以上5兒明可知，本發明係根據擺動訊號之頻率高 ^判斷數位多功能光碟之種類，而非如同先前技術根^ 3於擺動訊動之位置資訊，因此可避免先前技術容易誤 一的缺點，提咼正確判斷數位多功能光碟種類的機率。 、雖然本發明已以較佳實施例揭露如上，然其並非用 =限定本發明’任何熟f此技#者’在不脫離本發明之 :和範圍内，當可作些許之更動錢飾，因此本發明之: k乾圍當視後附之申請專利範圍所界定者為準。 ’、 【圖式簡單說明】 圖1為擺動訊號的來源示意圖。 圖2為DVD+的擺動訊號示意圖。 圖3為DVD—的擺動訊號示意圖。 圖4為先前的數位多功能光碟種類判斷方法流程圖。 圖5為本發明提出的數位多功能光碟種類判斷裝置 =某-貫施例中’三種數位多功能光碟的擺動訊號頻率範 碟種類判斷裝置 圖6為本發明提出的數位多功能光 的某一實施例的架構圖。 種類判斷方法 圖7為本發明提出的數位多功能光碟 的某一實施例的流程圖。 ' 【主要元件符號說明】 A、B、C、D :光碟機讀寫頭的四個區 101 : DVD光碟機的讀寫頭 〜 1〇2: DVD光碟片上的執道 12 13074^1— 201 : DVD+的擺動訊號 202 : DVD+的擺動訊號内含的相變區 301 : DVD—的擺動訊號 302 : DVD—的擺動訊號内含的凸紋預設孔 402 :設定DVD+使用的相關參數 404 :是否讀取到目前位置？ 406 ： DVD+ 408 :設定DVD—使用的相關參數 410 :是否讀取到目前位置？Otvvf.d〇c/c As apparent from the above 5, the present invention determines the type of the digital versatile optical disc based on the high frequency of the swaying signal, instead of the position information of the oscillating motion as in the prior art. Avoid the shortcomings of the prior art, and improve the chances of correctly judging the types of digital versatile discs. The present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the invention to any of the inventions. Therefore, the present invention is not limited to the scope of the patent application. ‘, [Simple description of the diagram] Figure 1 is a schematic diagram of the source of the sway signal. Figure 2 is a schematic diagram of the wobble signal of the DVD+. Figure 3 is a schematic diagram of a DVD-swing signal. 4 is a flow chart of a method for judging a previous digital versatile disc type. FIG. 5 is a digital multi-function optical disc type judging device according to the present invention. FIG. 6 is a schematic diagram of a three-digit multi-function optical disc oscillating signal frequency disc type judging device. FIG. 6 is a certain digital multi-function light proposed by the present invention. An architectural diagram of an embodiment. Type Judging Method Fig. 7 is a flow chart showing an embodiment of a digital versatile optical disc proposed by the present invention. ' [Main component symbol description] A, B, C, D: Four areas of the CD player read/write head 101: Read and write head of the DVD player ~ 1〇2: Debut on the DVD disc 12 13074^1— 201 : DVD+ Swing Signal 202: Phase change zone 301 included in the DVD+ wobble signal: DVD-swing signal 302: DVD-swing signal included in the wobble signal preset hole 402: Set the relevant parameters for DVD+ 404: Whether Read to current location? 406 : DVD+ 408 : Set DVD - related parameters used 410 : Is the current position read?
412 ： DVD-414 ： DVD-ROM 601 :擷取裝置 602 :判斷裝置 603 :濾波器 604 :除頻器 605 :計頻器 606 :判斷器 607 :擺動訊號 608 :啟動訊號 609 :轉速訊號 610 :光碟種類訊號 702 :設定相關參數 704 :擷取擺動訊號 706 :設定除頻因子為1/2 13074¾ Otwf.doc/c 708 :除頻 710 :計算除頻後之擺動訊號頻率 712 :根據除頻後之頻率，判斷光碟種類412 : DVD-414 : DVD-ROM 601 : capture device 602 : determination device 603 : filter 604 : frequency divider 605 : frequency counter 606 : determiner 607 : swing signal 608 : start signal 609 : speed signal 610 : Disc type signal 702: Set related parameters 704: Capture wobble signal 706: Set the demodulation factor to 1/2 130743⁄4 Otwf.doc/c 708: Divide 710: Calculate the oscillating signal frequency 712 after frequency division: according to the frequency division Frequency, determine the type of disc
714 ： DVD-ROM 716 ： DVD- 718 ：DVD+714 : DVD-ROM 716 : DVD- 718 : DVD+