200844842 23858twf.doc/n 九、發明說明： 【發明所屬之技術領域】 本發明是關於一種記憶裝置，且特別是關於一種記憶 裝置與其防護方法。 【先前技術】 隨著記憶卡的日益普及並且逐漸有取代傳統磁片及光 碟（Compact disc，CD)的趨勢。尤其是如數位相機、數位攝 影機、MP3播放機、個人數位助理（Pers〇nal碑池1 Assistant，PDA)、行動電話等可攜式裝置，均是使用記憶 2來當作儲存資料的裝置。目前，市面的記憶卡種類包括 安全數位（Secure Digital，SD)記憶卡、緊密快閃（c〇mpact200844842 23858twf.doc/n IX. Description of the Invention: [Technical Field] The present invention relates to a memory device, and more particularly to a memory device and a method of protecting the same. [Prior Art] With the increasing popularity of memory cards and the trend of replacing conventional magnetic disks and compact discs (CDs). In particular, portable devices such as digital cameras, digital cameras, MP3 players, personal digital assistants (PDAs), and mobile phones use memory 2 as a means of storing data. Currently, the types of memory cards on the market include Secure Digital (SD) memory cards and compact flash (c〇mpact).
Flash，CF)纟己憶卡與多媒體卡（Muitime(jia Card，MMC)〜 等。 一然=，一般記憶卡必須要透過特定裝置或人機介面來 執2鎖疋或限制讀寫與密碼保護的功能，並且再利用特定 的裝置或人機介面來解除功能的限制狀態。目前，記憶卡 =防讀寫魏’通常是—不帶電性的開關，並且使用 ^備（如項卡機）的端子機構去偵測位於記憶卡上的開關位 却问ΐ決定是否開放記憶卡的讀寫功能。假如使用設備無 汗f的位置，則記憶卡的防讀寫功能形同虛設。 體卡數位記憶卡、緊密快閃記憶卡或多媒 行鎖:^ 蚊功能，必彡 1透過電腦齡持裝置來執 、疋扣7，並輪入密碼來進行加密與解密，假如手邊没 5 200844842 23858twf.doc/n =脑財職置，便無法執彳 【發明内容】 j頌疋功月匕。 本發明提供一種記憶 路工作電源後，自_定記_ ，，可在取得電 料保護的便利性。 “置的頃寫功能，以達成資 本發明提供一種記憶裝置，此記情 元、記憶體控制單元、切換開關與控制1败。!己憶單 Ο 單元用以讀寫記鮮元且内建防^ _ ° δ£*憶體控制 定㈣山蔓早兀。切換開關罝有铂 心與正心。控觀_接於切換開關 元之間。當上述之記憶裝置接收到工作J二1控制單 偵測切換開關之位置，若此切換開關位：：二工：電路 3之防護料以禁止記憶體控制單元二 本^提供—種行滅置，崎動以細於— 衣置’而此記憶裝置處㈣讀寫狀態。此 ^ 憶裝置介面與解碼單元，而此解碼單元具有—啟動=把 當上述之記憶裝置搞接至記料置介㈣，贿碼 ^輸出啟_碼至記憶裝置，萌除•裝置之防讀寫^ 本發明提供一種記憶裝置之防護方法，此記憶 有切換開關，而此切換開關用以鎖定記 能。上述記Μ置之防護方法包括下當接; 作電壓時，檢查記憶裝妓錢於防讀寫㈣。若記恢壯 置處於防碩寫狀態，則要求輪入啟動密碼，以解除記愴= 6 200844842 23858twf.doc/n 置的防碩寫狀態。若記憶裝置 方護;元以禁止讀取或寫入記：置 關來執行記憶體控制單:二據切換開 能後，將切換開關再切換至：常置的讀寫功 Ο 叮必須透過-啟動密碼進行解除，萨此 可有效，成記憶裝置資料保護的作用。 错此 為=本，明之上述和其他目的、特徵和優點能更明顯 作詳細說=本發明之較佳實施例，並配合所附圖式’ 【實施方式】Flash, CF) 纟 recall card and multimedia card (Muitime (jia Card, MMC) ~ etc. the general memory card must be implemented through a specific device or human interface to lock 2 lock or limit read and write and password protection The function, and then use a specific device or human-machine interface to release the restricted state of the function. Currently, the memory card = anti-reading Wei 'usually - the switch without electricity, and the use of equipment (such as the card machine) The terminal mechanism detects the switch position on the memory card and asks whether to open or not the function of reading and writing the memory card. If the device is used without the position of sweat, the anti-reading function of the memory card is ineffective. The physical card digital memory card, Tight flash memory card or multi-media lock: ^ Mosquito function, must be 1 through the computer age holding device to hold, buckle 7 and turn in the password to encrypt and decrypt, if not at hand 5 200844842 23858twf.doc / n = Brain Fortune, you can not be obsessed [invention content] j 颂疋 匕 匕. The present invention provides a memory circuit working power supply, since the _ fixed _, can be obtained in the convenience of electrical protection. Write function to achieve The capital invention provides a memory device, the memory element, the memory control unit, the switch and the control 1 are defeated. The memory unit is used for reading and writing the fresh element and the built-in anti- _ ° δ £* memory control The switch has a platinum heart and a positive heart. The control switch is connected between the switch elements. When the above memory device receives the position of the work J 2 control list detection switch, if this Toggle switch position:: 2: The protection material of circuit 3 is forbidden by the memory control unit. 2. The line is off, the rugged is finer than the clothing, and the memory device is (4) read and write. This ^ Recalling the device interface and the decoding unit, and the decoding unit has - start = connect the above-mentioned memory device to the material storage device (4), bribe code ^ output enable code to the memory device, and the device is protected against reading and writing ^ The invention provides a protection method for a memory device, wherein the memory has a switch, and the switch is used for locking the energy. The protection method of the above-mentioned device includes a connection; when the voltage is applied, the memory is checked for money. Write (four). If the record is restored, it is in anti-shut State, it is required to turn in the startup password to release the anti-shutdown state of the memory = 6 200844842 23858twf.doc / n. If the memory device is protected; the element is prohibited to read or write: the gate is executed to execute the memory Control list: After the two data is switched on, the switch will be switched to: the normal reading and writing function 叮 must be released by the -start password, which can be effective as a memory device data protection. The above and other objects, features and advantages of the present invention will become more apparent.
V "1繪不為本發明實施例之記憶裝置之示意圖。請參 一回1此屺丨思裝置100包括記憶單元11〇、記憶體控制單 兀120 :切換開_ n〇與控制電路14〇。記憶體控制單元 120中尚包括防護單元121與暫存器122。切換開關13〇 具J鎖料131與正f端132，可由使用者進行切換。控 制私路140耦接於切換開關13〇與記憶體控制單元12〇之 巧並根據切換開關130的位置（位於鎖定端131或正常 丨32)來決定是否致能防護單元121以禁止記憶體控制 單元120讀取或寫入記憶單元110。 兄憶體控制單元120負責讀寫記憶單元11()的内部資 7 200844842 ^i»^8twt.aoc/n ====:121:防護軍元121可使記㈣ 入記憶單it 110 b失能以防止外界讀取或寫 控制電路賴13G切換域定端⑶時， 連接電子裝置電壓 = 例如將記憶裝置100 Γ 而無法進行讀取或寫取前便會被鎖定， 端132 m hi寫動作。右切換開關130切換至正常 = = ===:·護單元Μ是否 啟動密碼’以解除防護單元121，若：單二 則允許記憶體控制單元12〇讀寫記憶單元ιι〇。未月匕 關⑽己制單元120可經由控制電路140得知切換開 好接㈣，，紐做出對應的動作’而控制電路140也 會在接收到所需的工作電壓德， 位置來蚊是否财二 仃根據切換開關130的 ⑽拖m^ G。換言之，當使用者改 位置時’記憶體控制單元12G與控制電路140 100接收到工作電壓時，自行動作，並決定 疋否鎖疋咕|置⑽。_ι作電麗的取得方式，可透 :内t!:，裝置100内建之微型太陽能或機械能電 定接it 經由記财置介面（連接介面）或是特 本貝施例之控制電路140可藉由 σ 由_或直接由記憶體控制單元 200844842 23858twf.doc/n 現’以達成上述之功效’故在此不加累述。 在本實施例中，上述之記憶裝置1〇〇可以為安全數位 記憶卡、緊密快閃記憶卡或是多媒體卡。在一般記憶卡（例 如女全數位記憶卡或緊禮、快閃記憶卡）規格中，其記情體 控制單元120會有内建的鎖定指令（L〇CKc〇mmand)或 是防舄的指令，通常由韌體所組成。這些鎖定或防寫的韌 體即為本實施所述之防護單元121，而在本發明另二實施 例中，p方護單元m也可以由設計者自行設計所需的防護 指令或以硬體電路來實現，在本發明中並不受限於記憶裝 置100規格所内建的防護指令。 —換言之，上述提及之防護單元121可包括鎖定功能與 防舄功此。控制電路140可根據一預設值來選擇執行鎖定 功能或防寫功能。此預設值可由使用者視需求先行設定， 以選擇對記憶裝置100進行資料保護的形式。若致能防護 單兀121的鎖定功能，則禁止記憶體控制單元12〇讀寫圮 憶單元uo ;若致能防護單元121的防寫功能，則二禁; 體控制早元120寫入記憶單元1。 厂、 當記憶裝置100被鎖定時，記憶體控制單元120會要 求使用者輸入啟動密碼（例如〇〇〇〇 )以解除鎖定狀熊曰(防 讀寫狀態）。啟動密碼可預先設定，並儲存於暫存器m 或疋利用記憶單元110的特定區塊來進行儲存。 上述實施例中，記憶裝置100是以記憶卡為例來說明 本發明。然而，本發明實施例之記憶裝置100不限於記愤 卡，亦可為可攜帶式硬碟或]^?3 (多媒體）播放器及個: 9 200844842 2Jj$!)»twi.a〇c/n 數位助理之内建非揮發性記憶體裝置。 第二實施例 Γ ο 經由上述第一實施例，可歸納一種記憶裝置1〇〇之防 濩方法’其防護方法說明如下。圖2繪示為本發明實施例 之記憶裝置防護方法之流程圖。請同時參考圖1與圖2， 在步驟S210中，首先，當記憶裝置1〇〇接收到工作電壓 犄’圯憶體控制單元12〇會先行偵測防護單元121是否致 能’以檢查記憶裝置10〇是否處於防讀寫狀態。若防護單 兀121致能’表示記憶裝置1〇()處於防讀寫狀態，則進行 步驟S220。若防護單元121未致能，表示記憶裝置丨⑻處 於正常狀態，則進行步驟S230。 士在步驟S220中，即記憶裝置1〇〇處於防讀寫狀態， 此^己k裝置1GG會要求輸人—啟動密碼，以解除 :解:，的防護單元121的功效，使記憶裝= 二二：:買寫貧料的狀態。在步驟S230 t，即記憶裝置 们130月1处於正常狀態，此時由控制電路140齡'*]切換開 / 疋否位於鎖定端131。若切換開關130位於鎖定端 位於正常端m，則進行步 ==。140偵測切換開關130 步驟S240中’即切換開關130位於鎖定端131，J：b 魏記缝㈣單元 不止II貝取或馬入g己情裝菩1 η ⑽隨即進人防讀躲ll；；1 ’記憶裝置 卜木步驟S220要求輸入啟 10 200844842 23 858twf. doc/π 動密碼，以解除記憶裝置100的防讀寫狀態。在步驟S250 中’即切換開關130位於正常端132，表示記憶裝置1〇〇 處於正常狀態，則允許正常讀寫記置⑽的 第三實施例 從另-個觀點來看，本發明提出一種行動裝置，適用 於上述之記憶裝置100，如圖3所示，圖3緣示為本發明 另-實施例之行動裝置之方塊圖。行動裝置3〇〇包括記情 ( 裝置介面310與解碼單元320，解碼單S 320具有解除記 憶裝置100敎所需的啟動密碼。若記憶裝置刚處於防 讀寫^態，當記憶裝置1GG純至記憶裝置介面31〇時， 解碼單元320自動輸出啟動密碼至記憶裝置1〇〇，以 記憶裝置100之防讀寫狀態。 因此’配合上述實關之行動以雇與記憶農置 100 ,不僅增加記憶裝置_㈣料防護效果，同時也不會 k成使用者的不便。使用者僅需在行動I置獨與記憶裝 i 設㈣應的啟動密碼，行喊置·即可自行解除 c 記憶裝置100的防讀寫狀態，而別的行動裝置卻需要輸入 啟動密碼才可以讀寫記憶裝置100。 系示上所述’本發明具有下列優點·. (1) 當圮憶裝置接收到工作電壓時，即可自動鎖定記 憶裝置的讀寫功能，以達成自動鎖定記憶裝置的功效。 (2) 當鎖定記憶裝置的讀寫功能後，無論切換開關再 切換至鎖疋端或是正常端，此記憶襄置仍然處於防讀寫的 狀怨，若欲解除鎖定記憶裝置的讀寫功能，必須透過啟動 11 200844842 23858twf.doc/n 記憶裝置的讀寫功能，藉此可有效地達成 (3)非機構方式來限制& 複雜度或是_機構毁=，可減少使賴備端子的 二本發明已以較佳實施例V "1 is not a schematic diagram of a memory device according to an embodiment of the present invention. Please refer to 1 for example. The device 100 includes a memory unit 11 and a memory control unit 120: switch between the switch and the control circuit 14A. The guard unit 121 and the register 122 are further included in the memory control unit 120. The changeover switch 13 has a J lock 131 and a positive f end 132, which can be switched by the user. The control private path 140 is coupled to the switch 13 and the memory control unit 12 and determines whether the protection unit 121 is enabled to disable the memory control according to the position of the switch 130 (located at the lock end 131 or the normal port 32). Unit 120 reads or writes to memory unit 110. The brother memory control unit 120 is responsible for reading and writing the internal resources of the memory unit 11 (200844842 ^i»^8twt.aoc/n ====: 121: the protective military element 121 can make a note (four) into the memory list it 110 b lost It can prevent the external reading or writing control circuit from connecting to the 13G switching domain fixed end (3), and connect the electronic device voltage = for example, the memory device 100 can be locked before being read or written, and the terminal 132 m hi write action . The right changeover switch 130 is switched to normal =====: • whether the protection unit 启动 activates the password ’ to release the protection unit 121, and if: the second one allows the memory control unit 12 to read and write the memory unit ιι〇. The non-monthly (10) self-made unit 120 can know that the switch is opened and connected via the control circuit 140, and the button performs the corresponding action. The control circuit 140 also receives the required working voltage. Finance II drags m^ G according to (10) of the switch 130. In other words, when the user changes the position, the memory control unit 12G and the control circuit 140 100, when receiving the operating voltage, act on their own and decide whether or not to lock the lock. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ This can be done by σ by _ or directly by the memory control unit 200844842 23858twf.doc/n to achieve the above-mentioned effects. In this embodiment, the memory device 1 can be a secure digital memory card, a compact flash memory card or a multimedia card. In a general memory card (for example, a female full memory card or a fast flash memory card) specification, the ticker control unit 120 has a built-in lock command (L〇CKc〇mmand) or a tamper-proof command. Usually composed of firmware. The locking or anti-writing firmware is the protection unit 121 of the present embodiment, and in another embodiment of the present invention, the p protection unit m can also be designed by the designer to provide the required protection instructions or hardware. The circuit is implemented, and is not limited to the protection instructions built into the specifications of the memory device 100 in the present invention. - In other words, the protection unit 121 mentioned above may include a locking function and a defense function. The control circuit 140 can select to perform a lock function or a write prevention function according to a preset value. The preset value can be set by the user as needed to select a form of data protection for the memory device 100. If the locking function of the protection unit 121 is enabled, the memory control unit 12 is prohibited from reading and writing the memory unit uo; if the anti-writing function of the protection unit 121 is enabled, the second control is disabled; 1. When the memory device 100 is locked, the memory control unit 120 asks the user to input a startup password (for example, 〇〇〇〇) to release the lock-type bear (anti-read and write status). The boot password can be pre-set and stored in the scratchpad m or 疋 using a particular block of the memory unit 110 for storage. In the above embodiment, the memory device 100 is described by taking a memory card as an example. However, the memory device 100 of the embodiment of the present invention is not limited to a card, and may also be a portable hard disk or a [3] multimedia player and a computer: 9 200844842 2Jj$!)»twi.a〇c/ n Digital assistant built-in non-volatile memory device. SECOND EMBODIMENT By the above-described first embodiment, a method of preventing tampering of a memory device can be summarized. 2 is a flow chart of a method for protecting a memory device according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 simultaneously, in step S210, first, when the memory device 1 receives the operating voltage, the memory control unit 12 detects whether the protection unit 121 is enabled to check the memory device. 10〇 Is it in the anti-reading state. If the protection unit 121 is enabled to indicate that the memory device 1 is in the read/write prevention state, step S220 is performed. If the guard unit 121 is not enabled, indicating that the memory device 丨 (8) is in the normal state, step S230 is performed. In step S220, that is, the memory device 1 is in the anti-reading state, the device 1GG will ask for the input-activation password to release the effect of the protection unit 121, so that the memory device = two Two:: Buy the state of writing poor materials. At step S230 t, the memory devices are in a normal state on the 1st of the month, and at this time, the control circuit 140 is switched on/off to be at the lock terminal 131. If the switch 130 is located at the normal end m, then step ==. 140 detects the switch 130 in step S240, that is, the switch 130 is located at the lock end 131, J: b Wei Kee (four) unit is not only II be taken or the horse enters the genre of Buddhism 1 η (10) then enters the anti-reading ll; 1 ' The memory device step S220 requires inputting a password to cancel the anti-reading state of the memory device 100. In the step S250, that is, the switch 130 is located at the normal end 132, indicating that the memory device 1 is in a normal state, the third embodiment of allowing the normal read/write record (10) is from another point of view, the present invention proposes an action. The device is applicable to the above-described memory device 100. As shown in FIG. 3, FIG. 3 is a block diagram of a mobile device according to another embodiment of the present invention. The mobile device 3 includes a sensation (device interface 310 and decoding unit 320, and the decoding single S 320 has a startup password required to release the memory device 100. If the memory device is just in the anti-reading state, when the memory device 1GG is pure When the memory device interface is 31〇, the decoding unit 320 automatically outputs the activation password to the memory device 1 to memorize the read/write status of the device 100. Therefore, the operation of the above-mentioned real-time operation is employed to memorize and store the farm 100, thereby not only increasing the memory. The device _ (four) material protection effect, at the same time will not become the user's inconvenience. The user only needs to activate the password in the action I and the memory device (4), and can cancel the c memory device 100 by himself. The anti-reading state is enabled, and other mobile devices need to input a startup password to read and write the memory device 100. The present invention has the following advantages: (1) When the memory device receives the operating voltage, The read/write function of the memory device can be automatically locked to achieve the function of automatically locking the memory device. (2) When the read/write function of the memory device is locked, the switch is switched to the lock end or the positive switch. At the end, the memory device is still in the anti-reading and resentment manner. If the read/write function of the memory device is to be unlocked, it must be effectively achieved by starting the read/write function of the memory device of 200844842 23858twf.doc/n. 3) Non-institutional means to limit & complexity or _ mechanism ruin =, can reduce the two of the inventions have been preferred embodiment
c. 離:發;1 精具有通常知識者，在不脫 準。之保羞耗圍备視後附之申請專利範圍所界定者為 【圖式簡單說明】 圖1繪示為本發明實施例之記憶裝置之示奇圖。 I圖2繪示為本發明實施例之記憶襞置防護$法之流程 之方塊圖。 圖3 %示為本發明另一實施例之行動裝置 【主要元件符號說明】 100 :記憶裝置 110 :記憶單元 120:記憶體控制單元 121 ·防護單元 122 :暫存器 130 :切換開關 131 ··鎖定端 132 :正常端 12 200844842 23858twf.doc/n 140 :控制電路 S210〜S250 :本發明實施例之記憶裝置之防護方法的 各步驟 300 ： 310 ： 320 ： 行動裝置 記憶裝置介面 解瑪早元 13c. From: Hair; 1 Those who have the usual knowledge are not out of the way. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a memory device according to an embodiment of the present invention. FIG. 2 is a block diagram showing the flow of the memory device protection $ method according to an embodiment of the present invention. FIG. 3 is a mobile device according to another embodiment of the present invention. [Main component symbol description] 100: Memory device 110: Memory unit 120: Memory control unit 121 • Protection unit 122: Register 130: Switch 131 • Locking end 132: normal end 12 200844842 23858twf.doc/n 140: control circuit S210~S250: steps 300 of the protection method of the memory device according to the embodiment of the present invention: 310: 320: mobile device memory device interface