200910217 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種應答裝置’特別是指一種沒有隱 私風險的應答裝置。 【先前技術】 射頻識別（RFID)標籤是大家熟知的技術。由於成本 低且尺寸小，1〇^〇標籤可被廣泛地應用。 另一方面，RFID標籤卻造成隱私風險。例如：在零售 應用中，如果一消費者購買一設置有—Rfid標籤的產品， 該消費者無法防止該RFID標籤被一未經授權的RFID讀取 裝置讀取，且也不知道該RFID標籤在未經其同意的情況下 被讀取。 以下是各種已知方法，用於減輕與RFID標籤相關的隱 私風險： 遵照EPCglobal第二代標準的一電子產品碼（epc )標 籤藉由在接收到來自一 RFID讀取裝置的一 ”刪除（Km ),， 命令時，”刪除，’（即永久禁能）其自身，來解決隱私風險。 然而，這種’’刪除”方法卻阻礙了該EPC標籤的零售應用中 的許多其它可能性，其中許多（例如退貨）需要該EPC標 籤在購買後仍然是致能的。此外，該EPC標籤的禁能只能 藉由使用該RFID讀取裝置對該EPC標籤執行一讀取操作 來證實。 美國專利公開案第20060132313號所揭露的一可撕式 標籤（Clipped Tag )藉由其一標籤天線之一部分的移除， 5 200910217 以縮短其操作範圍’來保護―消費者的隱私。這提供一種 肉眼可見的方法來限制該可撕式標籤在遠距離被讀取’同 時仍致能該可撕式標籤在近距離㈣取，& 了例如退貨。 然而，該可撕式標籤仍難以避免上述的隱私風險。200910217 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a response device', particularly to a response device that is free of privacy risks. [Prior Art] Radio frequency identification (RFID) tags are well known techniques. Due to its low cost and small size, the 1〇^〇 label can be widely used. On the other hand, RFID tags pose a privacy risk. For example, in a retail application, if a consumer purchases a product with an Rfid tag, the consumer cannot prevent the RFID tag from being read by an unauthorized RFID reader and does not know that the RFID tag is Read without their consent. The following are various known methods for mitigating the privacy risks associated with RFID tags: An electronic product code (epc) tag that complies with the EPCglobal second generation standard by receiving a "delete" from an RFID reader (Km ),, when ordering, "delete," (ie permanently disable) itself to address privacy risks. However, this 'delete' approach has hampered many other possibilities in the retail application of the EPC tag, many of which (eg, returns) require the EPC tag to remain enabled after purchase. In addition, the EPC tag The ban can only be confirmed by performing a read operation on the EPC tag using the RFID reading device. A detachable label (Clipped Tag) disclosed in US Patent Publication No. 20060132313 Part of the removal, 5 200910217 to protect the privacy of the consumer by shortening its operating range. This provides a macroscopic method to limit the tearable label to be read at a distance while still enabling the tearable The tag is taken at a close distance (four), & for example, a return. However, the tearable label is still difficult to avoid the above privacy risks.
Vnje大學的研究人員發展出的一 RFID守護者（RFID Guardian)在偵测到—未經授權的rfid讀取裝置嘗試讀取 其g理的RFID標籤時，產生—可聽見的警示聲。然而， 該RFID標籤也難以避免上述的隱私風險。 說實驗室發展出的-阻隔標籤（Bloekei* Tag)發出 一干擾信號’來防止其自身接收來自-未經授權之RFID讀 取裝置的信號。然❿，該阻隔標籤可被惡意使用，以在零 售環境中癱瘓RFID系統的操作。 【發明内容】 因此本發明之目的即在提供—種應答裝i，可以克 服先前技術的上述缺點。 於疋本發明應答裝置包含—模式選擇器及一應答器 。該應答_到該模式選擇器，並具有一功能。在該模 ^選擇15被致動的情況下，當該應答器接㈣-被無線發 运的切換叩令時’該功能在致能和禁能狀態之間被選擇性 地切換。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之_個較佳實施例的詳細說明中 渣#地笔頦.。 200910217 參閱圖1，本發明應答襞置丨 i登摆哭1 1 a也叶 之較佳實％例包含一模式 ^擇益 11 及一應答器（Transp〇nder) 12。An RFID Guardian developed by researchers at Vnje University produces an audible warning when it detects that an unauthorized rfid reader is trying to read its RFID tag. However, the RFID tag is also difficult to avoid the above privacy risks. It is said that the Bloekei* Tag developed by the laboratory emits an interference signal to prevent itself from receiving signals from the unauthorized RFID reader. The barrier tag can then be used maliciously to manipulate the operation of the RFID system in a retail environment. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a response device that overcomes the above-discussed shortcomings of the prior art. The response device of the present invention comprises a mode selector and a transponder. The answer_ goes to the mode selector and has a function. In the event that the mode selection 15 is actuated, the function is selectively switched between the enabled and disabled states when the transponder is connected to the (four)-wired switching command. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention are described in the following detailed description of a preferred embodiment of the reference drawings. 200910217 Referring to FIG. 1, the preferred embodiment of the present invention includes a mode ^11 and a transponder 12 (Transp〇nder).
該模式選擇器11 ?—撬P A 機械式開關的形態，並具有第一 及第二端m、112。在本實 — 隹本貫施例中，該模式選擇器11的嗲 弟一端111電連接到一電性接地（GND)e Μ *該應答g 12具有一電連接到該模式選擇器U的該第二 知112的輸人121，並包括一用於储存資料的記憶體122 ’ 及=於儲存-㈣位元的暫存器123。在本實施例中，該 2器12具有-功能。該功能包括將該應答器益 收到的資料存入其記憶體122 (即在一讀寫裝置4對該心 $12的—寫人操作期間）及無線發送儲存在其記憶體122 中的資料（即在該讀寫裝置4對該應答器12的—讀取操作 期W在另—實施例中，該應答11 12的該功能只包括將 該應荅窃12無線接收到的資料存入其記憶體122及無線發 送儲存在其記憶體122中的資料這二者中的—者。較佳地 ，該應答器12是一射頻識別（RFID)標籤。 在。亥模式選擇器11被致動（Actuate )的情況下，當該 :器12接收到來自該讀寫裝置4的一被無線發送的切換 命令（Switch Command)時，該應答器12的該功能在致能 矛不此狀態之間被選擇性地切換。在本實施例中，該應发 态12的該暫存器123中的該控制位元被設定以藉此切換該 應答益〗2的該功能到該致能狀態，及被清除以藉此切換該 應答态12的該功能到該禁能狀態。可選擇地，該應答器12 的該暫存器123中的該控制位元被清除以藉此切換該應答 200910217 器12的該功能到該致能狀態，及被設定以藉此切換該應答 器12的該功能到該禁能狀態。 值得注意的是’在接收到來自該讀寫裝置4的該切換 命令時，該應答器12發送一第一回應（在該模式選擇器u 被致動（即被切換為導通）的情況下）或一第二回應。該 第一回應包括該應答器12的該功能已從該致能和禁能狀態 之先前一者被切換到該致能和禁能狀態之目前一者的—指 示。該第二回應包括該模式選擇器11沒被致動（即被切換 為不導通）的一指示。 不S忒模式選擇器11是否被致動，在接收到來自該讀 寫裝置4的一要求命令（Request Command)時，該應答器 η更發送-第三回應。該第三回應包括該應答器12的該功 能的該致能和禁能狀態的目前一者之一指示。這提供—種 容易的方法來證實該應答器12的該功能是在該致能或禁能 狀態，而該讀寫裝置4不需要對該應答器12執行該讀取或 寫入操作。 圖2說明上述的應答裝置丨所執行的步驟。 在步驟20中，該應答琴 Τ σ益無線接收來自該讀寫裝置4 的該切換命令。 在步驟中，該應答器12_在其輸人12 電壓邏輯位準。 ，步驟22中，如果在步驟21中_到的該讓輯 IS位2^_式選擇器U被切換為導通)，流程前 驟23,否則（即該模式選擇器被切換為不導通） 8 200910217 ’流程前進到步驟29。 Θ制^步驟23中，該應答器12決定其暫存器123中的該 控制位的一電壓邏輯位準。 ㈣St驟24中’如果在步驟23中決定出該應答器丨2的 /子$ 123中的該控制位元的該電壓邏輯位準是高位 机私則進到步驟25，否則，流程前進到步驟27。 :步驟25中，該應答器12將該應答器12的該暫存器 準。㈣控制位元的該電壓邏輯位準從高位準修改為低位 =驟26 +，該應答器12發送該第_回應（包括其 益23中的該控制位元）到該讀 回到步驟20。 机程 制位-步驟27中’錢答器12將其暫存器123中的該$ 制位疋的該電_輯位準從低位準修改為高位準。 工 :步驟28中，該應答器12發送該第—回應（包括1 暫存态123中的該控制位元） w 八 回到步驟20。 ⑽寫裝置4。然後，流程 在步驟29中，該應答器 裝置4。然後，流程回到步驟2()。^4第二回應到該讀寫 圖3說明該應答裝ρ所執行的更多步驟。 在步驟30中，緣廡欠吳^ 的該要求命令。°…錢接收來自該讀窝裝置4 在步驟3】尹，續雇欠毋 暫存…的二:： 發送該第-回應（包括其 丫妁該控制位兀）到該讀寫裝置4。 200910217 從以上可知，在零售應肖巾，t想要在講買到一設置 有本發明應答裝置1的產品時保護―消費者的隱私，該應 答器12的該功能首先被切換到該禁能狀態，以藉此防止該 應，器12被該讀寫裝置4讀取或寫人，且該模式選擇器u 接著被切換為不導通時，以藉此防止該應答胃12的該功能 «讀寫裝置4切換到該致能狀態。然後，當為了例如退 貨而想要將該應答器12的該功能切換回該致能狀態時，該 模式選擇器11首先必須被切換回導通。 惟以上所述者，僅為本發明之較佳實施例而已，當不 、此限疋本發明貫施之範圍，即大凡依本發明申請專利 祀圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一示意方塊圖，說明本發明應答裝置之較佳實 施例；及 和圖3是流程圖，說明圖1的應答裝置所執行的 步驟。 10 200910217 【主要元件符號說明】 1…… •…應答裝置 122 ..… • · 5己憶體 11…… •…模式選擇器 123 …·· …暫存器 111… •…第一端 4 ........ ••讀寫裝置 112… …·第一端 20〜29 -· ••步驟 12•…. •…應答器 30 〜31 .. ••步驟 121… …·輸入The mode selector 11 ? - P A mechanical switch has the first and second ends m, 112. In the present embodiment, the first end 111 of the mode selector 11 is electrically connected to an electrical ground (GND) e Μ * the response g 12 has an electrical connection to the mode selector U. The input 121 of the second knowledge 112 includes a memory 122' for storing data and a register 123 for storing - (four) bits. In the present embodiment, the 2 device 12 has a function. The function includes storing the data received by the transponder in its memory 122 (i.e., during a write-and-write operation of the read/write device 4 for the heart of $12) and wirelessly transmitting the data stored in its memory 122 ( That is, in the read/write device 4, the read operation period of the transponder 12 is in another embodiment, the function of the response 11 12 includes only storing the data wirelessly received by the plagiarism 12 into its memory. The body 122 and the wirelessly transmit the data stored in its memory 122. Preferably, the transponder 12 is a radio frequency identification (RFID) tag. The mode selector 11 is activated ( In the case of Actuate, when the device 12 receives a wirelessly transmitted switching command (Switch Command) from the read/write device 4, the function of the transponder 12 is between the enabling and the spearless states. Selectively switching. In this embodiment, the control bit in the register 123 of the response state 12 is set to thereby switch the function of the response benefit 2 to the enabled state, and is Clearing to thereby switch the function of the responsive state 12 to the disabled state. Alternatively, The control bit in the register 123 of the transponder 12 is cleared to thereby switch the function of the response 200910217 to the enabled state, and is set to thereby switch the function of the transponder 12 to The disabled state. It is worth noting that 'when receiving the switching command from the read/write device 4, the transponder 12 sends a first response (when the mode selector u is activated (ie, switched to conduct) a second response. The first response includes that the function of the transponder 12 has been switched from the previous one of the enabled and disabled states to the current one of the enabled and disabled states. The second response includes an indication that the mode selector 11 is not activated (i.e., switched to non-conducting). Whether the mode selector 11 is activated or not, is received from the read/write device The responder η sends a third response in response to a request command of 4. The third response includes an indication of one of the current ones of the enabling and disabling states of the function of the transponder 12. This provides an easy way to verify the response The function of 12 is in the enabled or disabled state, and the read/write device 4 does not need to perform the read or write operation on the transponder 12. Figure 2 illustrates the steps performed by the response device described above. In step 20, the answering chime wirelessly receives the switching command from the read/write device 4. In the step, the transponder 12_ is at its input voltage level of 12, in step 22, if at step In the 21st _to, the IS bit 2^_type selector U is switched to be turned on), before the process is step 23, otherwise (ie, the mode selector is switched to non-conducting) 8 200910217 'The flow proceeds to step 29. In step 23, the transponder 12 determines a voltage logic level of the control bit in its register 123. (4) In step 24, 'if the voltage logic level of the control bit in the /sub-$123 of the transponder 丨2 is determined in step 23, the high-level machine proceeds to step 25, otherwise, the flow proceeds to step 27. In step 25, the transponder 12 registers the register of the transponder 12. (4) The voltage logic level of the control bit is modified from a high level to a low level = step 26 +, and the transponder 12 transmits the first response (including the control bit in its benefit 23) to the read back to step 20. The machine setting - in step 27, the "reducer 12" changes the level of the $_bit in the register 123 from the low level to the high level. In step 28, the transponder 12 sends the first response (including the control bit in the 1 temporary state 123) w VIII back to step 20. (10) Write device 4. Then, the flow is in step 29, the transponder device 4. Then, the flow returns to step 2(). ^4 Second Response to the Read and Write Figure 3 illustrates the more steps performed by the response device. In step 30, the request is owed to Wu. °... Money received from the reading device 4 In step 3] Yin, renewed employment 暂 Temporary... 2: Send the first-response (including its control bit 兀) to the read/write device 4. 200910217 From the above, it can be seen that in the case of retail sales, t wants to protect the privacy of the consumer when buying a product provided with the response device 1 of the present invention, the function of the transponder 12 is first switched to the ban. a state whereby the device 12 is prevented from being read or written by the read/write device 4, and the mode selector u is then switched to be non-conducting, thereby preventing the function of the response stomach 12 from being read. The writing device 4 switches to the enabled state. Then, when it is desired to switch the function of the transponder 12 back to the enabled state for, for example, a return, the mode selector 11 must first be switched back to conduct. However, the above is only the preferred embodiment of the present invention, and is not limited thereto, and the scope of the present invention is simply equivalent to the equivalent of the invention and the description of the invention. And modifications are still within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic block diagram showing a preferred embodiment of a response device of the present invention; and Figure 3 is a flow chart illustrating the steps performed by the response device of Figure 1. 10 200910217 [Description of main component symbols] 1... •...Response device 122 ..... • 5 Remembrance 11... •...Mode selector 123 ...·· ... scratchpad 111... •...first end 4 . ....... ••Reading and writing device 112...··First end 20~29 -· ••Step 12•....•...Transponder 30~31 .. ••Step 121...