1373731 鲁 / 六、發明說明： - 【發明所屬之技術領域】 本發明係關於無線通訊裝置之收送訊控制技術，尤其 有關與無線標籤（tag，以下亦簡稱為標籤）進行通訊的讀寫 裝置（reader/writer)之收送訊控制技術。1373731 鲁 / VI, the invention description: - [Technical Field of the Invention] The present invention relates to a receiving and receiving control technology for a wireless communication device, and more particularly to a reading and writing device for communicating with a wireless tag (tag, hereinafter also referred to as a tag) (reader/writer) receiving and sending control technology.
I 【先前技術】I [Prior Art]
近年來，屬於利用電波的非接觸識別技術的RFID (Radio Frequency IDentification，射頻識別）係廣泛運 ® 用在種種領域中。尤其以比以往之RFID系統通訊距離更長 為特徵的950MHZ頻域RFID受到矚目，而急速地普及。 更且，搭載有大容量記憶體的被動式（無電池）無線標 籤已從國内外之無線標籤製造商開始出貨，而可期待今後 的普及。 頃罵裝置與無線標籤間之通訊係从il; (IDentification，識別）資訊等非常短的資料通訊為主， 一次的通訊資料量約為-百數十位元左右。 資料,二隨著ΐ線標籤記憶體之大容量化，可預想通訊 貝枓1會增加至數十κ至數百κ位元。 續寫=動ί紐標鐵之回應波非常微弱，容易受到至 量的增加，如何確立不響，故隨著今後通訊資料 定地進行通訊的方式即為二境左右而經常可高速且穩 '^ ^ 句〜新的課題。 為了解決如上所述之 一種方式，係測定讀寫裝“於專利文獻1中，揭示了 夏與無線標籤之間的通訊時間、 320350 1373731 / 通訊失敗時之重試次數而作為表示通訊穩定度之指標的資 - 訊予以通知使用者，且使用者可依此而設定最佳參數。 [專利文獻1]日本國特開2007-94890號公報 【發明内容】 (發明所欲解決的課題） 依據專利文獻1所揭示的系統，讀寫裝置係接收來自 外部控制機器等的動作指示而與無線標籤進行通訊。 此時，係取得通訊處理時間及通訊失敗時之指令重試 * 次數以作為表示通訊穩定度的穩定度參數，且將該穩定度 參數附加於通訊結果資料而輸出。 籍此，使用者即可依據通訊處理時間之長短和通訊重 試次數之多寡等指標而掌握通訊穩定度之狀況和變化，而 可設定因應於通訊環境的通訊參數。 但是在實際的系統運用環境中，由於無線標籤的移動-· 或多重路徑（multi path)等的影響，通訊環境係時時刻刻 φ 進行變化。 因此，為了實現不被通訊環境左右的高速且穩定的通 訊，有需要即時的掌握通訊時之通訊環境且將通訊參數最 佳化。 於專利文獻1所揭示的系統中，由於係使用者依據由 通訊處理時間和重試次數所構成的穩定度參數來調整通訊 參數，故有難以即時地對應通訊環境之變化而極細腻地將 通訊參數最佳化的課題存在。 本發明係以解決上述課題為主要目的，其目的在於實 4 320350 1373731 / 現一種無線通訊裝置等，其可即時地對應通訊環境之變化 • 而持續進行穩定的通訊。 (解決課題的手段） 本發明之無線通訊裝置，係一種與具有無線通訊功能 的記憶體裝置進行無線通訊的無線通訊裝置，其係具有： 通訊品質測定部，測定與前述記憶體裝置間之無線通 訊路徑的通訊品質；以及 通訊參數決定部，因應由前述通訊品質測定部所測定 胃的通訊品質，而決定與前述記憶體裝置進行無線通訊時之 通訊參數。 另外，於本發明之無線通訊裝置中，前述通訊品質測 定部係測定從前述記憶體裝置所送出的電波之收訊電波強 度；前述通訊參數決定部係因應由前述通訊品質測定部所 .測定的收訊電波強度，而決定前述通訊參數。 另外，於本發明之無線通訊裝置中，前述通訊參數決 φ 定部係因應由前述通訊品質測定部所測定的通訊品質，而 決定與前述記憶體裝置進行無線通訊的通訊資料之資料長 度以作為前述通訊參數。 另外，於本發明之無線通訊裝置中，前述通訊參數決定 部係隨著由前述通.訊品質測定部所測定的通訊品質越高， 則越延長前述通訊資料之資料長度。 另外，於本發明之無線通訊裝置中，.前述通訊參數決 定部係因應由前述通訊品質測定部所測定的通訊品質，而 決定當與前述記憶體裝置間的無線通訊失敗時之通訊重試 5 320350 、上限值以作為前述通訊參數。 ^ ，於本發明之無線通訊裝置中，於、+、、 高:藉由前述通訊品質測定部所測定 使別述通訊重試次數之上限值越小。 <訊。。質越 | 於本發明之無線通訊裝置中，彳 訊記憶部，其係記憶有，將通訊品質=、通訊參 且依每個通訊品質位階示有通訊袁:;?數個階 =更條件的通訊參數f訊；前述通訊參數決=讯參數 述通訊參數資訊卜抽出與由前述通訊品質測定=係從， 的通訊品質對應的通訊品質位階之通訊 。所測疋 變更條件’判斷現在的狀態與所抽出的變更 合，當現在的狀態與前述變更條件符合時，即 疋付 的通訊參數以外的通訊參數。 用所抽出 另外，於本發明之無線通訊裝置中，前述通訊 訊記憶部係將表示無線通訊連續成功次數的通訊泉教貝 予以記憶而作為通訊參數之變更條件；前述通訊泉資2 部係計數與前述記憶·體裝置間的無線通訊連續成工決= 數’且判斷所計數的次數是否在所抽出的變更條件 連續成功次數以上’當所計數的次數在前述連續成功次數 以上時二使用與所抽出的通訊參數對應的通訊品質位階相 比為更高之通訊品質位階所:對應的通訊參數。 另外，於本發明之無線通訊裝置中，前述通訊泉數資 訊記憶部係將表示無線通訊連續失敗次數的通訊參數資訊 予以記憶而作為通訊參數之變更條件；前述通訊^數決^ 320350 1373731 部係計數與前述記憶體裝置間的無線通訊連續失敗的次 數，且判斷所計數的次數是否在所抽出的變更條件所示的 連續失敗次數以上，當所計數的次數在前述連續失敗次數 以上時，使用與所抽出的通訊參數對應的通m品質位階相 比為更低之通訊品質位階所對應的通訊參數。 另外，於本發明之無線通訊裝置中，前述無線通訊裝 置係藉由無線通訊而從無線標籤裝置接收從前述無線標籤 裝置所讀取的讀取資料；前述通訊參數決定部係因應由前 述通訊品質測定部所測定的通訊品質，決定前述讀取資料 之資料長度以作為前述通訊參數。 另外，於本發明之無線通訊裝置中，前述無線通訊裝 置係藉由無線通訊而將寫入無線標籤裝置的寫入資料送訊 至前述無線標籤裝置；前述通訊參數決定部係因應由前述 通訊品質測定部所測定的通訊品質，決定前述寫入資料之 資料長度以作為前述通訊參數。 另外，本發明之無線通訊方法，係具有：通訊品質測 定步驟，由與具有無線通訊功能的記憶體裝置進行無線通 訊的電腦，測定與前述記憶體裝置間之無線通訊路徑的通 訊品質；以及通訊參數決定步驟，前述電腦係因應於由前 述通訊品質測定步驟所測定的通訊品質，而決定與前述記 憶體裝置進行無線通訊時之通訊參數。 另.外’本發明之記錄媒體’係記錄有程式’該程式係 使與具有無線通訊功能的記憶體裝置進行無線通訊的電腦 執行以下處理：.通訊品質測定處理，測定與前述記憶體裝 320350 1373731 置間之無線通訊路徑的通訊品質；以及通訊參數決定處 理，因應於由前述通訊品質測定處理所測定的通訊品質， 而決定與前述記憶體裝置進行無線通訊時之通訊參數。 (發明效果） 依據本發明，測定與記憶體裝置間之無線通訊路徑的 通訊品質，且因應該通訊品質而設定最佳的通訊參數，藉 此即可即時的推定經常變化的通訊環境，而可實現不受通 訊環境之變化左右的高速且穩定的通訊。 【實施方式】 以下示有關於本發明之無線通訊裝置的2個實施形 態。又，以下所示之實施形態僅為本發明實施形態之一部 分，本發明之技術範圍並非僅限於以下實施形態者。 於以下實施形態中，係以於讀寫裝置測定來自無線標 籤的·回應波之電波強度，且藉由分析其強度而推定通訊環 境為主要内容。 而且，讀寫裝置係藉由因應通訊環境而自動地將通訊 參數最佳化而成為可進行即時對應通訊環境之變化的通 訊。 另外，藉此，可實現不受通訊環境左右而經常高速且 穩定的通訊。 在此，對於以下實施形態所示的無線標籤之記憶體構 成使用第1圖進行說明。 於第1圖中，搭載於無線標籤的記憶體大致上係由3 個區域所構成。 320350 1373731 / 第1個係「系統區域」。 m . • 於系統區域係儲存有無線標籤之製造商編號和產品型 名、系號等，H/W(Hardware，硬體）固有資訊，容量為數十 至數百位元。 第2個為「標籤ID區域」。 於標籤ID區域係保存有識別無線標籤用的唯一 (unique)的標籤ID，容量為數十至一百數十位元。 於以往之RFID系統中，讀寫裝置主要讀取的區域係此 •標籤ID區域。 第3個為「使用者記憶體區域」。 使用者記憶體區域為使用者可自由讀取/寫入的區 域，容量為數十K至數百K位元。 使用者記憶體區域係與其他區域相比容量非常地大， _係成為通訊量增加之主要原因的區域。 於以下實施形態所示的内容係主要預想於以使用者記 φ 憶體區域為對象的讀取/寫入存取時的大容量通訊時發揮 效果。 接著，對於無線標籤於從讀寫裝置進行讀取/寫入存取 之際所使用的讀取指令（read command)和寫入指令（write command)之指令格式（format)使用第2圖進行說明。 第2圖（a)係表示讀取指令的格式例，第2圖（b)係表 示寫入指令例。 如第2圖（a)所示，讀取指令係由5個參數（parameter) 所構成。 9 320350 1373731 第1個為「指令碼（command code )」，為用以識別讀取 指令的碼（code)。 第2個為「讀取目標籤憶體區域」，表示於構成無線標 籤之記憶體的3個區域中欲讀取何區域。 第3個為「讀取目標位址」，表示在以「讀取目標籤憶 體區域」所指定的讀取目標籤憶體區域内，開始讀取的起 始位址（address) ° 第4個為「讀取大小」，表示從「讀取目標位址」起欲 讀取的資料大小。 無線標籤係於接收讀取指令時，從記憶體讀取由「讀 取大小」所指定之大小的資料，作為讀取指令之回應而回 送至讀寫裝置。 雖增加「讀取大小」則可縮短全處理時間，但因為非 常微弱之電波的無線標籤之回應長度會變長，故若通訊環 境惡劣則會提高通訊失敗的可能性。 因此，於以下所示的實施形態中，在進行對於無線標 籤的讀取處理時，係藉由將「讀取大小」參數對應通訊環 境而最佳化以實現兼顧高速性與高穩定性的通訊。 第 5 個為「CRC(Cyclic Redundancy Check，循環冗餘 檢測）」，為指令全體之錯誤（error)檢測符號。 如第2圖（b)所示，寫入指令係由6個參數所構成。 第1個為「指令碼」，為用以識別寫入指令的碼。 第2個為「寫入目標籤憶體區域」，表.示於構成無線標 籤之記憶體的3個區域中欲寫入何區域。 10 320350 1373731 • 第3個為「寫入目標位址j，表示在以「寫入目標籤情 •體區域」所指定的寫入目標籤憶體區域内，開始寫入的^ 始位址。 第4個為「寫人大小」’表示從「寫人目標位址」起欲 寫入的資料大小。無線標籤係於接收寫入指令時，從讀寫 裝置接收由「寫入大小」所指定之大小的寫入資料而= 至記憶體。 雖增加「寫入大小」則可縮短全處理時間.，但對以非 常省電力而動作的無線標籤而言，由於會增加對於收訊處 理及記憶體寫入處理的負荷，故若通訊環境惡劣則會提高 因電力不足等而處理失敗的可能性。 因此’於以下所示的實施形態中，在進行對於無線標 籤的寫人處料，賴由將「寫人A小」參數對應通訊^ 境而最佳化以實現兼顧高速性與高穩定性的通訊。 第5個為「寫入資料」，表示以「寫入大小」所指定的 φ 資料長度份之寫入資料。 帛6個為「CRC」，為指令全體之錯誤檢測符號。 接著’對於電波強度與通訊參數之最佳值間的關係利 用弟3至弟5圖進行說明。 第3圖示有因應收訊電波強度的讀取資料長度之設定 指針。 第4圖示有目應收訊電波強度的寫人f 指針。又又& » 5圖示有因應收訊電波強度的指令重試次數之上限 320350 11 1373731 / 的設定指針。 • 藉由延長通訊參數之中的讀取/寫入資料長度，即可減 少讀寫裝置所發送的指令數量，而可縮短全體之處理時間。 因此，如第3圖及第4圖所示，在推定電波強度強且 通訊環境穩定，亦即推定通訊成功率高時，延長讀取/寫入 資料長度。 相反地若電波強度弱且通訊環境不穩定，亦即當推定 通訊成功率低時，由於若讀取/寫入資料長度長則會提高通 * 訊失敗的可能性，故縮短讀取/寫入資料長度。 接著，通訊參數中之所謂指令重試次數之上限，係指 當指令通訊失敗時會再度發送相同指令的重試處理最多會 連續執行幾次。 當推定為電波強度強且通訊環境穩定時，由於可預想 通訊成功率高，且讀取/寫入資料長度長將導致重試引起的 額外負擔（overhead)變大，因此係如第5圖所示地減少指 φ 令重試次數的上限。 相反的，當推定為電波強度弱且通訊環境不穩定時， 由於可預想通訊失敗率高，且讀取/寫入資料長度短將導致 重試引起的額外負擔會變小，因此係增加指令重試次數的 上限。 藉此，即可導出因應於通訊環境的最佳通訊參數。 以下針對在與無線標籤進行發送讀寫指令的讀寫裝置 中，將通訊參數最佳化的方式不同的2個實施形態進行說 明。 12 320350 1373731 第1實施形態 本只把形之讀寫裝置2係測定與無線標鐵3之間 無線通訊路徑之通訊品質而將通訊參數最佳化。 具體而言’係如前所述地依據從無線標藏而得的回應 波之收訊電波強度而將通訊參數最佳化。 〜 以下，對於本實施形態之讀寫裝置的方式，使用第6 圖、第7圖、第8圖進行說明。In recent years, RFID (Radio Frequency IDentification), which is a non-contact identification technology using radio waves, has been widely used in various fields. In particular, the 950 MHz frequency domain RFID, which is characterized by a longer communication distance than the conventional RFID system, has attracted attention and has rapidly spread. In addition, passive (batteryless) wireless tags equipped with large-capacity memory have been shipped from wireless tag manufacturers at home and abroad, and are expected to become popular in the future. The communication between the device and the wireless tag is mainly based on very short data communication such as il; (IDentification, identification) information, and the amount of communication data is about - hundred tens of bits. According to the data, with the large capacity of the 标签 line label memory, it is expected that the communication will increase to tens of κ to hundreds of κ bits. Continued to write = move ί 纽 之 之 之 之 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应 回应^^ Sentence ~ new topic. In order to solve the above-described method, the measurement read/write device is disclosed in Patent Document 1, which discloses the communication time between the summer and the wireless tag, 320350 1373731 / the number of retries when the communication fails, and indicates the communication stability. The information of the indicator is notified to the user, and the user can set the optimal parameter accordingly. [Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-94890 [Abstract] (Problems to be Solved by the Invention) In the system disclosed in Document 1, the reading and writing device receives an operation instruction from an external control device or the like and communicates with the wireless tag. At this time, the communication processing time and the command retry* times when the communication fails are obtained as indicating that the communication is stable. The stability parameter of the degree, and the stability parameter is added to the communication result data and output. Therefore, the user can grasp the status of the communication stability according to the length of the communication processing time and the number of communication retry times. Change, but can set the communication parameters in response to the communication environment. But in the actual system operating environment, due to the wireless tag The influence of the motion-- or multi-path, etc., the communication environment changes at all times φ. Therefore, in order to achieve high-speed and stable communication that is not affected by the communication environment, it is necessary to immediately grasp the communication environment during communication. And optimizing the communication parameters. In the system disclosed in Patent Document 1, since the user adjusts the communication parameters according to the stability parameter composed of the communication processing time and the number of retries, it is difficult to immediately correspond to the communication environment. The present invention has been made to solve the above problems in a very delicate manner. The present invention aims to solve the above problems, and its purpose is to implement a wireless communication device, etc., which can instantly correspond to a communication environment. Change and continuous communication is continued. (Means for Solving the Problem) The wireless communication device of the present invention is a wireless communication device that wirelessly communicates with a memory device having a wireless communication function, and has a communication quality measuring unit. Determining the communication quality of the wireless communication path with the aforementioned memory device; and communicating The parameter determining unit determines a communication parameter when wireless communication is performed with the memory device in response to the communication quality of the stomach measured by the communication quality measuring unit. Further, in the wireless communication device of the present invention, the communication quality measuring unit is configured. The intensity of the received radio wave of the radio wave transmitted from the memory device is measured, and the communication parameter determining unit determines the communication parameter in response to the strength of the received radio wave measured by the communication quality measuring unit. In the wireless communication device, the communication parameter determination unit determines the data length of the communication data wirelessly communicated with the memory device as the communication parameter in response to the communication quality measured by the communication quality measurement unit. In the wireless communication device of the present invention, the communication parameter determining unit extends the data length of the communication data as the communication quality measured by the communication quality measuring unit is higher. Further, in the wireless communication device of the present invention, the communication parameter determining unit determines the communication retry when the wireless communication with the memory device fails due to the communication quality measured by the communication quality measuring unit. 320350, the upper limit value is used as the aforementioned communication parameter. In the wireless communication device of the present invention, the upper limit of the communication retry count is smaller as measured by the communication quality measuring unit. <Xun. .质质| In the wireless communication device of the present invention, the memory of the communication system is stored, and the communication quality =, the communication parameter and the communication quality level are shown as communication:: number of orders = more conditions The communication parameter f is the communication parameter of the communication parameter. The communication parameter information is extracted and communicated with the communication quality level corresponding to the communication quality of the communication quality==. The measured 变更 change condition 'determines the current state and the extracted change. When the current state matches the change condition, it is the communication parameter other than the communication parameter. In addition, in the wireless communication device of the present invention, the communication memory unit memorizes the communication springs indicating the number of consecutive successes of the wireless communication as a change condition of the communication parameters; the communication springs 2 department counts The wireless communication with the memory device is continuously determined to be "number" and it is determined whether the counted number of times is greater than the number of consecutive successes of the extracted change condition. 'When the counted number is more than the number of consecutive successes, the second use and The communication quality level corresponding to the extracted communication parameter is higher than the communication quality level: the corresponding communication parameter. Further, in the wireless communication device of the present invention, the communication spring information storage unit memorizes the communication parameter information indicating the number of consecutive failures of the wireless communication as a change condition of the communication parameter; the communication number is determined to be 320350 1373731 Counting the number of consecutive failures of wireless communication with the memory device, and determining whether the counted number of times is greater than the number of consecutive failures indicated by the extracted change condition, and when the counted number of times is greater than the number of consecutive failures, The communication quality parameter corresponding to the communication quality level is lower than the communication quality parameter corresponding to the extracted communication parameter. Further, in the wireless communication device of the present invention, the wireless communication device receives the read data read from the wireless tag device from the wireless tag device by wireless communication; the communication parameter determining unit is adapted to the communication quality The communication quality measured by the measurement unit determines the data length of the read data as the communication parameter. Further, in the wireless communication device of the present invention, the wireless communication device transmits written data written in the wireless tag device to the wireless tag device by wireless communication; the communication parameter determining unit is adapted to the communication quality The communication quality measured by the measurement unit determines the data length of the written data as the communication parameter. Further, the wireless communication method of the present invention has a communication quality measuring step of measuring a communication quality of a wireless communication path with the memory device by a computer wirelessly communicating with a memory device having a wireless communication function; In the parameter determining step, the computer determines a communication parameter when wirelessly communicating with the memory device in response to the communication quality measured by the communication quality measuring step. In addition, the 'recording medium of the present invention' is recorded with a program that performs the following processing on a computer that wirelessly communicates with a memory device having a wireless communication function: communication quality measurement processing, measurement and storage of the aforementioned memory 320350 1373731 The communication quality of the wireless communication path and the communication parameter determination processing determine the communication parameters when performing wireless communication with the memory device in response to the communication quality measured by the communication quality measurement process. Advantageous Effects of Invention According to the present invention, it is possible to instantaneously estimate a constantly changing communication environment by measuring the communication quality of a wireless communication path with a memory device and setting an optimum communication parameter in response to communication quality. Achieve high-speed and stable communication that is not affected by changes in the communication environment. [Embodiment] Two embodiments of the wireless communication device of the present invention are shown below. Further, the embodiments described below are only a part of the embodiment of the present invention, and the technical scope of the present invention is not limited to the following embodiments. In the following embodiment, the read/write device measures the radio wave intensity of the response wave from the wireless tag, and estimates the strength to estimate the communication environment as the main content. Moreover, the read/write device automatically communicates the communication parameters in response to the communication environment to become a communication that can change the communication environment in real time. In addition, it is possible to achieve high-speed and stable communication that is not always in the communication environment. Here, the memory configuration of the wireless tag shown in the following embodiment will be described using Fig. 1 . In Fig. 1, the memory mounted on the wireless tag is basically composed of three areas. 320350 1373731 / The first system is "system area". m. • In the system area, the manufacturer's serial number and product name, system number, etc. of the wireless tag are stored, and the H/W (Hardware, hardware) inherent information has a capacity of tens to hundreds of bits. The second one is the "tag ID area". In the tag ID area, a unique tag ID for identifying a wireless tag is stored, and the capacity is tens to hundreds of tens of bits. In the conventional RFID system, the area mainly read by the reading and writing device is the tag ID area. The third is the "user memory area". The user memory area is an area that the user can freely read/write, and the capacity is tens of K to several hundred K bits. The user memory area is much larger than other areas, and _ is the area where the amount of communication increases. The contents shown in the following embodiments are mainly intended to be effective when large-capacity communication is performed during read/write access to the user's memory area. Next, the instruction format (read command) and the write command (write command) used by the wireless tag when reading/writing access from the reader/writer device are described using FIG. 2 . Fig. 2(a) shows an example of the format of a read command, and Fig. 2(b) shows an example of a write command. As shown in Fig. 2(a), the read command is composed of five parameters. 9 320350 1373731 The first is the "command code", which is the code used to identify the read command. The second one is "Reading the target tag memory area", and indicates which area is to be read in the three areas constituting the memory of the wireless tag. The third one is the "read target address", which indicates the start address (address) in the read target tag recall area specified by "Read the target tag recall area". The "Read Size" indicates the size of the data to be read from the "Read Target Address". The wireless tag reads the data of the size specified by the "read size" from the memory when receiving the read command, and returns it to the read/write device as a response to the read command. Although the "read size" is increased, the total processing time can be shortened. However, since the response length of the wireless tag of the very weak radio wave becomes long, if the communication environment is bad, the possibility of communication failure is increased. Therefore, in the embodiment described below, when the reading process for the wireless tag is performed, the "read size" parameter is optimized in accordance with the communication environment to realize high-speed and high-stability communication. . The fifth is "CRC (Cyclic Redundancy Check)", which is an error detection symbol for the entire command. As shown in Fig. 2(b), the write command is composed of six parameters. The first is the "command code", which is the code used to identify the write command. The second one is "write target tag recall area", and the table shows which area is to be written in the three areas constituting the memory of the wireless tag. 10 320350 1373731 • The third is “Write Target Address j, which indicates the start address to be written in the write target tag memory area specified by “Write Target Tag Area”. The fourth one is "Writer Size", which indicates the size of the data to be written from the "Write Target Address". When receiving a write command, the wireless tag receives the write data of the size specified by the "write size" from the read/write device and = to the memory. Although the "write size" is increased, the total processing time can be shortened. However, for a wireless tag that operates with a very low power consumption, the load on the receiving process and the memory write process is increased, so that the communication environment is bad. It will increase the possibility of failure due to insufficient power. Therefore, in the embodiment shown below, the writing of the wireless tag is performed, and the "writing A small" parameter is optimized to correspond to the communication environment to achieve both high speed and high stability. communication. The fifth is "Write Data", which indicates the write data of the φ data length specified by "Write Size".帛6 are “CRC”, which is the error detection symbol of the entire command. Next, the relationship between the intensity of the radio wave and the optimum value of the communication parameters will be described using the pictures of the brothers 3 to 5. The third figure shows a pointer for setting the length of the read data in response to the received radio wave strength. The fourth figure shows the writer f pointer of the telescope wave strength. Also, & » 5 shows the setting pointer for the upper limit of the number of command retries for the received wave strength 320350 11 1373731 / . • By extending the length of the read/write data among the communication parameters, the number of instructions sent by the reader/writer can be reduced, and the overall processing time can be shortened. Therefore, as shown in Figs. 3 and 4, the length of the read/write data is prolonged when it is estimated that the radio wave intensity is strong and the communication environment is stable, that is, when the communication success rate is estimated to be high. Conversely, if the radio wave strength is weak and the communication environment is unstable, that is, when the estimated communication success rate is low, since the length of the read/write data is long, the probability of failure of the communication is increased, so that the read/write is shortened. Data length. Then, the upper limit of the so-called instruction retries in the communication parameters means that the retry process of resending the same instruction when the command communication fails will be executed at most several times. When it is presumed that the radio wave intensity is strong and the communication environment is stable, since the communication success rate is expected to be high, and the length of the read/write data is long, the extra burden caused by the retry becomes large, so as shown in FIG. The indication reduction refers to the upper limit of the number of retries for φ. On the contrary, when it is presumed that the radio wave strength is weak and the communication environment is unstable, since the communication failure rate is expected to be high, and the short read/write data length will cause the extra burden caused by the retry to become small, the instruction weight is increased. The upper limit of the number of trials. This allows you to derive the best communication parameters for your communication environment. Hereinafter, two embodiments in which the communication parameters are optimized in the read/write device for transmitting and reading commands with the wireless tag will be described. 12 320350 1373731 First Embodiment The read/write device 2 of the present invention measures the communication quality of the wireless communication path with the wireless target 3 to optimize the communication parameters. Specifically, the communication parameters are optimized based on the received wave strength of the response wave obtained from the wireless tag as described above. 〜 Hereinafter, the mode of the reader/writer apparatus of the present embodiment will be described using FIG. 6, FIG. 7, and FIG.
於第6圖令，表示有本實施形態之讀寫裝置^以及控 制PC(Personal Computer，.個人電腦）4之構成要件。 讀寫裝置1為無線通訊裝置之一例，無線標鐵 憶體裝置之一例。 ' 在第6圖t，控制PC介面部ia係控制與控制pc4 的資料收送訊。 日 收送訊控制部lb係因應從控制pC4而來的要·求而控制 與無線標籤3之間的資料收送訊。 送訊部lc係將送往無線標籤3的指令調變且予以送 訊。 收訊部Id係接收來自無線標籤3的回應.且予以解調。 收訊電波強度測定部le係測定於收訊部ld所收訊的 來自無線標籤3的回應波之收訊電波強度。 通訊參數調整部lg係因應以收訊電波強度測定部 所測定的電波強度而調整通訊參數。 通訊參數最佳值記憶部lh係將對應於來自無線標籤3 的回應波之收訊電波強度的通訊參數之最佳值予以記憶。 320350 13 1373731 / 如上所述，於本實施形態中，係測定從無線標籤3所 • 送出的電波之收訊電波強度，且因應收訊電波強度而決定 通訊參數以作為與無線標籤3之間的無線通訊路徑之通訊 品質。 收訊電波強度測定部le係通訊品質測定部之例，通訊 參數調整部lg係通訊參數決定部之例。 此外，天線2係連接於讀寫裝置1而進行與無線標籤 3之間的無線通訊。 ® 無線標籤3係與讀寫裝置1進行通訊。 此外，控制PC4係控制讀寫裝置1，且實行與無線標 藏3之間的通訊。 讀寫裝置控制部4a係控制讀寫裝置1。 讀寫裝置介面部4b係控制與讀寫裝置1之間的通訊。 接著·，對於讀寫裝置1之依據來自無線標籤3的回應 波之收訊電波強度而從通訊參數最佳值表導出通訊參數之 φ 最佳值而設定的動作利用第7圖、第8圖進行說明。 第7圖係示有記憶於通訊參數最佳值記憶部lh且因應 無線標籤回應之電波強度的最佳通訊參數（讀取資料長 度、寫入資料長度、重試次數上限）的通訊參數最佳值表。 第8圖為於本實施形態中讀寫裝置1從搭截有大容量 使用者記憶體的無線標籤3讀/寫大量資料用的一連串之 動作的流程圖。 以下使用第8圖說明對應無線標籤回應的收訊電波強 度將通訊參數予以最佳化，且讀/寫大量資料用之處理流 14 320350 裎 -(1)無線標籤讀/寫要求步驟 首先對於從控制PC4對於讀寫裝置^ 送讀/寫要求的步禅（第8圖步驟_進行說明織3發 :步驟i。!中’從控制p c 4之讀寫裝置控制 碩寫裝置介面部4b而朝續 &由 寫要求。 朝嗔罵裝置1發補無線標籤的讀/ 月寫裝置1係經由控制pC介面部h 續取要求且進入步驟1〇2。 …爲戴 ⑵無線標鐵ID讀取/電波強度測定步驟 回應=波==置1係讀取無線標籤3 ’且測定其 步驟）進^ 第8圖步驟戰通訊品質測定 訊邱f驟⑽中’項寫裝置1係從收送訊控制部1b經由送 °。 C、天線2而對無線標籤3送訊ID讀取指令。 部更且’，.從無線標籤3有回應時，經由天線2、收訊 收m訊控制部lb接收ID，並且於收訊電波強度測 二e測定無線標籤回應波之電波強度’進入步驟⑽。 ^ )通訊參數最佳化步驟 訊灸=著，對於因應於步驟102所測定的電波強度而將通 驟)進^^的步驟（第8 ®步驟103)(通訊參數決定步 於步驟103中’通訊參數調整部^係從記憶於通訊參 值°己隐邛lh的第7圖之通訊參數最佳值表導出因應 320350 15 1373731 * 1/ 02所測定的無線標籤回應之電波強度的最佳通訊 ，數且進行朝讀寫裝置i的設定，進入步驟1〇4。 ^ (4)使用者記憶體讀/寫實行步驟 接著，對於讀寫裝置1係利用於步帮1〇3已最佳化的 =訊^數，而對無線標籤3之使用者記憶體實行讀/寫的步 驟（弟8圖步驟1〇4至107)進行說明。 :於步驟104巾’係讀寫裝置j將適用了於步驟⑽已 ，佳化的通訊參數（讀取大小/寫入大小）的第2圖之讀/寫 從收/送訊控制部1b經由送訊部lc、天線2而對無. 線軚織3發送且進入步驟。 於步驟105中，將無線標籤3對於讀/寫指令的回應經 ^線2、收訊部ld’而由收送訊控制部比接收，且在 斷讀/寫處理是否成功的同時，於收訊電波強度測定部“ 測定無線標籤回應之電波強度。當讀/寫處理成功時則進入 步驟106，失敗時則進入步驟Μ?。 、步驟1G6中’收送訊控制部1 &係判斷於步驟 =似所要求之大小的讀/寫是否已結束，當結束時則判 舄處理成功而進入步驟通，當未完時則進入步驟 步驟’收送訊控制部lb係判峡讀/寫處理失 敗時的㊉/寫指令之重試執行次數，是否超過於步驟10 .In the sixth embodiment, the components of the read/write device and the control PC (Personal Computer) 4 of the present embodiment are shown. The reading/writing device 1 is an example of a wireless communication device, and is an example of a wireless standard object device. In Figure 6, t, control PC interface ia control and control pc4 data transmission and reception. The daily delivery control unit lb controls the data transmission and reception with the wireless tag 3 in response to the request and control from the pC4. The transmitting unit lc modulates and transmits the command sent to the wireless tag 3. The receiving unit Id receives the response from the wireless tag 3 and demodulates it. The received radio wave strength measuring unit is configured to measure the received radio wave intensity of the response wave from the wireless tag 3 received by the receiving unit 1d. The communication parameter adjustment unit lg adjusts the communication parameters in response to the radio wave intensity measured by the received radio wave strength measuring unit. The communication parameter optimum value memory unit lh memorizes the optimum value of the communication parameter corresponding to the received wave strength of the response wave from the wireless tag 3. 320350 13 1373731 / As described above, in the present embodiment, the strength of the reception wave of the radio wave transmitted from the wireless tag 3 is measured, and the communication parameter is determined as the relationship with the wireless tag 3 in response to the strength of the received radio wave. Communication quality of wireless communication path. The received radio wave strength measuring unit is an example of a communication quality measuring unit, and the communication parameter adjusting unit lg is an example of a communication parameter determining unit. Further, the antenna 2 is connected to the reader/writer device 1 to perform wireless communication with the wireless tag 3. ® Wireless Tag 3 communicates with the reader/writer 1 . Further, the control PC 4 controls the reading and writing device 1 and performs communication with the wireless tag 3. The reader/writer device control unit 4a controls the reader/writer device 1. The read/write device interface 4b controls communication with the read/write device 1. Next, the operation of setting the φ optimum value of the communication parameter from the communication parameter optimum value table based on the received radio wave intensity of the response wave from the wireless tag 3 by the reader/writer 1 is shown in Fig. 7 and Fig. 8 Be explained. Figure 7 shows the best communication parameters stored in the communication parameter optimal value memory unit lh and the optimal communication parameters (read data length, write data length, and maximum number of retries) in response to the radio wave response. Value table. Fig. 8 is a flow chart showing a series of operations for reading and writing a large amount of data from the wireless tag 3 which has a large-capacity user memory in the reader/writer apparatus 1 in the present embodiment. The following figure 8 illustrates the communication wave strength corresponding to the response of the wireless tag to optimize the communication parameters, and the processing stream for reading/writing a large amount of data is used. 14 320350 裎-(1) The wireless tag read/write request step is first for the slave Control PC4 for the reading and writing device ^ send read / write requirements of the step (Fig. 8 step _ to explain the woven 3 hair: step i.! in the control pc 4 read and write device control master device device face 4b The continuation & write request. The reading/month writing device 1 that supplies the wireless tag to the yaw device 1 renews the request via the control pC interface face h and proceeds to step 1 〇 2. ... for wearing (2) wireless standard ID reading / Radio wave intensity measurement step response = wave == set 1 system to read the wireless tag 3 'and determine its steps) into the ^ Figure 8 step communication communication quality measurement information Qiu f (10) in the 'item writing device 1 from the receiving message The control unit 1b transmits the °. C. Antenna 2 sends a message ID read command to the wireless tag 3. In addition, when there is a response from the wireless tag 3, the ID is received via the antenna 2, the receiving and receiving m control unit 1b, and the radio wave strength of the wireless tag response wave is measured in the received wave intensity measurement 2' (step) (10) . ^) Communication parameter optimization step moxibustion = step (step 8 + step 103) for the intensity of the radio wave measured in step 102 (the communication parameter is determined in step 103) The communication parameter adjustment unit ^ derives the best communication of the radio wave strength of the wireless tag response measured by 320350 15 1373731 * 1 / 02 from the communication parameter optimal value table stored in the communication parameter of the communication parameter value The number is set to the read/write device i, and the process proceeds to step 1〇4. ^ (4) User memory read/write execution step Next, the read/write device 1 is optimized for step 1〇3. The step of reading/writing the user memory of the wireless tag 3 (steps 1 to 4 to 107) is described in the following paragraph: In step 104, the device read/write device j will be applied. In step (10), the read/write from the receiving/sending control unit 1b of the communication parameter (read size/write size) of the optimized communication is received from the receiving/transmitting control unit 1b via the transmitting unit 1c and the antenna 2. 3 sends and proceeds to step. In step 105, the response of the wireless tag 3 to the read/write command is passed through the line 2, the receiving unit ld' The receiving/receiving control unit compares the reception, and at the same time as the interrupt/write processing is successful, the receiving radio wave strength measuring unit "measures the radio wave strength of the wireless tag response. When the read/write processing is successful, the process proceeds to step 106, and the failure occurs. Then, the process proceeds to step 。. In step 1G6, the 'receiving and transmitting control unit 1 & determines whether the read/write of the requested size is completed in the step = step SG6, and when it is finished, the process is successful and the process proceeds to the step. If it is not completed, the process proceeds to step S. The receiving/receiving control unit 1b determines whether the number of retry executions of the ten/write command when the read/write processing fails is exceeded in step 10.
最佳化後的通財數（指令旗讀上限），當超 斷為讀/寫處理錯誤（errQr)㈣人步驟1G8 J 則判斷為可重試而進入步矛超過¥ 320350 16 1373731 (5)執行結果通知步驟 接著，對於將相對於無線標籤3的讀/寫處理之執行結 果通知控制PC4的步驟（第8圖步驟108)進行說明。 於步驟108中，讀寫裝置1之收送訊控制部lb係經由 控制PC介面部la .而將讀/寫處理結果通知控制PC4。 如以上所述，每次從無線標籤接收回應時即測定電波 強度，且因應其強弱而設定最佳的通訊參數，藉此即可即 時地推定經常在變化的通訊環境，且不被通訊環境之變化 左右而可實現高速且穩定的通訊。 以上，係針對本實施形態之RFID系統進行說明，其為 一種於無線標籤與讀寫裝置間進行非接觸通訊的RFID系 統，係具有： 無線標籤，搭載有可因應來自讀寫裝置的要求而進行 存取的記憶體； 讀寫裝置，可存取前述無線標籤之記憶體； 電波強度測定部，測定於前述讀寫裝置中接收來自前 述無線標籤的回應波時之電波強度；以及 通訊參數調整部，依據從前述電波強度測定部所取得 的來自前述無線標籤之回應波電波強度而導出最佳通訊參 數。 此外，於本實施形態中，係說明讀寫裝置具有通訊參 數最佳值記檍部，保持有因應於來自無線標籤的回應波電 波強度之通訊參數的最佳值， 此外，於本實施形態中，係說明了通訊參數最佳值記 17 320350 1373731 憶部係將無線標籤對於來自讀寫裂置的讀 讀取資料之資料大小作為通訊參數予以保持的情带回-， 广此外’料實_射，朗了通財數最佳值記憶 邛係將於來自讀寫裝置的寫入要求時 ° 入資料之諸大小作為戟參數予線標藏的寫 此外，於本實施形態中，說明了通訊參數最佳值記憶 部係將當來自讀寫裝置的指令要求 " 最為通訊參數而铺的情形。 次時私令重試次數 第2實施形態 雷二2施形態，對於依據來自無線標藏的回應波收訊 方頃/寫指令之失敗次數而將通訊參數最佳化的 方式利用第9®、第1G圖、第11圖進行說明。 播/ 9圖係表示本實施形態之讀寫裝置1及控制PC4之 構成要件。 .. 與第1實施形態的第6圖之間的差異僅在於追加了通 訊結果解析部lf、與隨著追加前者而變更的通訊 部lg之作用。 於第9 ® t ’控制PC介面冑la係控制與控制pc4之 間的資料收送.訊。 收送訊控制部lb係因應來自控制PC4的要求而控制與 無線標籤3間的資料收送訊。 訊 送訊4 lc係將送往無線標籤3的指令調變而進行送 id ##收來自無線標籤3的回應而進行解調 320350 1373731 收訊電波強度測定部le係測定於收訊部Id所接收的 無線標籤3回應波收訊電波強度。 通訊結果解析部If係計數送訊至無線標籤3的指令之 失敗次數。 通訊參數調整部lg係因應於收訊電波強度測定部le 所測定的電波強度與通訊結果解析部If所計數的指令失 敗次數，而調整通訊參數及修正通訊參數最佳值記憶部lh 内的最佳值。 通訊參數最佳值記憶部lh係記憶有與來自無線標籤3 的回應波收訊電波強度對應的通訊參數之最佳值。 又，於本實施形態中，通訊結果解析部If及通訊參數 調整部lg即成為通訊參數決定部之一例，此外，通訊參數 最佳值記憶部lh為通訊參數資訊記憶部之一例。 此外，天線2·為連接於讀寫裝置1，且進行與無線標 鐵3間之無線通訊的天線。 此外，無線標籤3係與讀寫裝置1進行通訊。 此外，控制PC4係控制讀寫裝置1而實行與無線標籤 3之間的通訊。 讀寫裝置控制部4a係控制讀寫裝置1。 讀寫裝置介面部4b係控制與讀寫裝置1之間的通訊。 接著，對於依據來自無線標籤3的回應波收訊電波強 度，從通訊參數最佳值表導出最佳值且予以設定，且在當 朝無線標籤3的指令連續成功或失敗時，將通訊參數最佳 值表内的最佳值予以修正的讀寫裝置之動作使用第10 19 320350 1373731 ;圖、第11圖進行說明。. 弟1 〇圖係示有夺#认a & - 虿記隐於通訊參數最佳值記佾部lh且對 應於無線標籤回應之電& θ σ 長产、寫入資料具痒 度的取佳通訊參數（讀取資料 試次數上限)和修正前述最佳值時 應滿足的支更條件(通訊連續失敗次數 功次數的上限）料訊參數最録表at訊參數=) 有大:旦=表示於本實施形態中讀寫裝置用以從搭載 體的無線標籤3讀/寫大量資料的-連串動作的流裎圖。 _ 1胃w 7 收二使用第11圖’說明用以因應無線標籤回應的 波強度而將通訊參數最佳化且讀/寫大量資料的處 圖的ΐί)ΐ = 2圖之2ίΠ至205為止與第1實施形態之第8 、〇1至為止係相同内容的處理。 (1)無線標臧讀/寫要求步驟 〜首先對於從控制PC4對於讀寫裝置2朝無線標藏3發 运-買/寫要求的步驟（第U圖步驛201)進行說明。 ^步驟中，從控制PC4之讀寫裳置控制部4a經由 屬寫裝置介面部处而朝讀寫裝置i發送朝無線標鐵3的讀 /罵要求。 2裝置1係經由控制PC介面部ia而接收無線標藏 〇貝取要求且進入步驟202。 (2)無線標籤ID讀取/電波強度測定步驟 接著，針對讀寫裝置i讀取無線標籤3，且測定其回 320350 20 1373731 應的電波強度的步驟（第丨丨圖步驟2〇2)(通訊品質測定步 驟）進行說明。 步驟202中’讀寫裝置1係從收送訊控制部lb經由送 訊部lc、天線2而對無線標籤3送訊iD讀取指令。更且， 虽使無線標籤3有回應時，經由天線2、收訊部Id，收送 訊控制lb接收id，並且於收訊電波強度測定部le測定 …'線払籤回應波之電波強度，進入步驟203。 ❿ (3)通訊參數最佳化步驟 接著，對於因應於步驟2〇2所測定的電波強度而將通 Z參數最佳化的步驟（第u圖步驟2G3)(通決 驟）進行說明。 / 數13估二驟2〇3中’通讯參數調整部lg係從記憶於通訊參 數取佳值記憶部lh的笫丨n闇 瘅於杨9π〇 的弟1〇圖之通訊參數最佳值表導出因 應於步驟_ 202所測定的盔绫枵籍 訊參數且進行朝讀寫Γ置定口應推之電波強度的最佳通 ⑷使用者記憶體讀/寫實行步^人步驟204。 輕ίΓ對於讀寫裝置1係利用於步驟2〇3已最佳化的 ^訊第=而對無線標籤3之使用者記憶體 驟（弟11圖步驟204至206)進行說明。 寫的步 於步驟204中，讀寫裝置丨係 最佳化的通訊參數（讀取大小/寫入大^ 了於步驟203已 指令，從收送訊控制部lb經由;）的第2圖之讀/寫 線標籤θ發送且進入步驟2〇5。 η。卩1c、天線2而對無 於步驟挪中，將無線標鐵3對寫 〶舄知令的回應經 320350 21 1373731 由天線2、收訊部id,而由收送訊控制部lb 斷讀/寫處理是否成功的同時，於收訊電波強戶須，=在判 測定無線標籤回應之電波強度。當讀/寫處理士疋。p le 步驟207，失敗時則進入步驟206。 >則進入 步驟206 t，收送訊控制部lb#列斷於 敗時的讀/寫指令之重試執行次數，是否超過;;牛=理失 以最佳化後的通訊參數（指令重試次數上限），二2〇3予 判斷為讀/寫處理錯誤（err〇r)而進入步驟212:，過時， 時則判斷為可重試而進入步驟2〇9。 ，备未超過 (5)通訊參數最佳值變更條件確認步驟1 接著，對於當與無線標籤3間之指令通訊 認是否變更通訊參數之最佳值的步驟（第u圖2功時，確 2〇8)(通訊參數決定步驟）進行說明。 °步驟207至 .於步驟207中，當於步驟接收來自無— 回應而判斷讀/寫處理成功時，通訊結果解析二示鐵3的 up)現在所剌的觀參數之指令軌=增 數，並且料令軸料失敗核清㈣q ;成= 指令通訊連續成功次數，與記憶在通訊參數最:= 與現在所適㈡ 2。當現在的齡通訊連續柄次數，超過最佳值變更） 條件（通訊連續成功次數之上 未超過時，則進入步驟2„。）卜進入倾208;而當 在步驟208中，通訊結果解析部η係在當步驟m的 320350 22 1373731 指令通訊連續成功次數超過最佳值變更條件（通訊連續成 功次數之上限）時，判斷為通訊環境穩定，而為了縮短全通 訊時間之目的而透過通訊參數調整部lg而增加該符合條 件的通訊參數最佳值（讀取資料長度或寫入資料長度）且進 入步驟211。 (6)通訊參數最佳值變更條件確認步驟2 接著，對於當與無線標籤3間之指令通訊失敗時，確 認是否變更通訊參數之最佳值的步驟（第11圖步驟209至 210)(通訊參數決定步驟）進行說明。 於步驟209中，當於步驟205接收來自無線標籤3的 回應而判斷讀/寫處理失敗時，通訊結果解析部If係遞增 現在所適用的通訊參數之指令通訊連續失敗次數，並且將 指令通訊連續成功次數清除為〇。 而且，將該指令通訊連續失敗次數、與記憶在通訊參 數最佳值記憶部lh的第10圖之通訊參數最佳值表中的與 φ 現在所適用的通訊參數對應的最佳值變更條件（通訊連續 失敗次數之上限）比較。當現在的指令通訊連續失敗次數超 過最佳值變更條件（通訊連續失敗次數之上限）時，進入步 驟210 ;而當未超過時，則進入步驟203。 在步驟210中，通訊結果解析部If係在當步驟209的 指令通訊連續失敗次數超過最佳值變更條件（通訊連續失 敗次數之上限）時，判斷為通訊環境不穩定，而為了提昇通 訊穩定度之目的而透過通訊參數調整部lg減少該符合條 件的通訊參數最佳值（讀取資料長度或寫入資料長度）且進 23 320350 1373731 入步驟203。 (7) 全資料讀/寫結束確認步驟 接著，對於確認全資料之讀/寫是否結束的步驟進行說 明（第11圖步驟211)。 於步驟211中，判斷在步驟201由控制PC4所要求之 大小的讀/寫是否結束，當結束時即判斷為讀/寫處理成功 而進入步驟212 ;當未結束時則進入步驟204。 (8) 執行結果通知步驟 接著，對於將相對於無線標籤3的讀/寫處理之執行結 果通知控制PC4的步驟（第11圖步驟212)進行說明。 於步驟212中，讀寫裝置1之收送訊控制部lb係經由 控制PC介面部la而將讀/寫處理結果通知控制PC4。 如以上所述，每次從無線標籤接收回應時即測定電波 強度，且因應其強弱而設定最佳的通訊參數，藉此即可即 時地推定經常在變化的通訊環境，且不受通訊環境之變化 左右而可實現高速且穩定的通訊。 更且，由於考慮了指令通訊之成功次數以及失敗次 數，故可將通訊參數之最佳值其本身持續維持為適於通訊 環境之變化，而提昇對於通訊環境的適應性。 以上，於本實施形態中，係說明了讀寫裝置具有通訊 結果解析部，其解析來自讀寫裝置的指令要求成功的次 數，且將其反映於通訊參數之最佳值。 另外，於本實施形態中，係說明了讀寫裝置具有通訊 結果解析部，其解析來自讀寫裝置的指令要求失敗的次 24 320350 1373731 \ 數’且將其反映於通訊參數之最佳值。 . 最後’對於本第1衫2實麵態赫的讀寫農 ' 之硬體構成例進行說明。 & 第12圖係不有於本第1及第2實施形態所示的讀寫 置1之硬體資源的-例的圖。又，第12圖之構成僅為讀' 裝置1之硬體構成的-例，讀寫裝置j之硬體構成不^於 第12圖所記载的構成，亦可為其他構成。 於第12圖中’讀寫襄置！係具有實行程式的咖川 • (Central Processin§ Unit，又稱中央處理裝置、處理 置、運算裝置、微處理器、微電腦、處理器）。cpu 911 ^ 經由匯流排912而與例如R0M(Read 〇nly Mem〇ry，唯讀呓 憶體）913、RAM(Random Access Memory，隨機存取呓忾 體）914、通訊埠915、以及磁碟裝置920連接且控制該= 硬體裝置（hardware device)。另外，亦可用快閃記憶體 (flash memory)、光碟裝置、記憶卡讀寫裝置等 罢The number of passes after optimization (the upper limit of the command flag), when the overrun is a read/write processing error (errQr) (4) The person steps 1G8 J are judged to be retryable and enter the step spear over ¥ 320350 16 1373731 (5) Execution Result Notification Step Next, a procedure (step 108 of FIG. 8) for notifying the control PC 4 of the execution result of the read/write processing with respect to the wireless tag 3 will be described. In step 108, the receiving/receiving control unit 1b of the reading/writing device 1 notifies the control PC 4 of the result of the read/write processing via the control PC interface. As described above, each time the response is received from the wireless tag, the intensity of the wave is measured, and the optimal communication parameter is set according to its strength, thereby instantly estimating the constantly changing communication environment and not being in the communication environment. High-speed and stable communication can be achieved by changing the range. The RFID system of the present embodiment is described above, and is an RFID system that performs non-contact communication between a wireless tag and a reader/writer device, and has a wireless tag that is mounted in response to a request from a reader/writer device. a memory to be accessed; a read/write device that can access a memory of the wireless tag; a radio wave intensity measuring unit that measures a radio wave intensity when the response wave from the wireless tag is received by the read/write device; and a communication parameter adjustment unit The optimal communication parameter is derived based on the strength of the response wave from the wireless tag obtained from the radio wave intensity measuring unit. Further, in the present embodiment, the reading and writing device has the communication parameter optimum value recording unit, and the optimum value of the communication parameter in response to the strength of the response wave from the wireless tag is maintained, and in the present embodiment, The system explains the optimal value of the communication parameters. 17 320350 1373731 The memory department will bring back the data size of the read and read data from the read/write cleavage as a communication parameter. In the present embodiment, the communication is described in the present embodiment, in which the size of the data is input from the read/write device. The parameter optimal value memory unit will be used when the command from the read/write device requires the most communication parameters. The second embodiment of the private retry number is the second embodiment, and the 9th version is used to optimize the communication parameters according to the number of failures of the response wave receiving party/write command from the wireless tag. The first and fourth figures will be described. The broadcast/9 diagram shows the components of the read/write device 1 and the control PC 4 of the present embodiment. The difference between the sixth embodiment and the sixth embodiment of the first embodiment is that the communication result analysis unit lf is added and the communication unit lg is changed as the former is added. In the 9th ® t' control PC interface 胄la system control and control pc4 between the data delivery. The receiving and transmitting control unit lb controls the data transmission and reception with the wireless tag 3 in response to the request from the control PC 4. The message transmission 4 lc adjusts the command sent to the wireless tag 3 to send the id ## receives the response from the wireless tag 3 and performs demodulation. 320350 1373731 The received radio wave strength measuring unit is measured in the receiving unit Id. The received wireless tag 3 responds to the wave receiving wave strength. The communication result analysis unit If counts the number of failures of the instruction sent to the wireless tag 3. The communication parameter adjustment unit lg adjusts the communication parameter and the corrected communication parameter optimum value memory unit lh in response to the radio wave intensity measured by the received radio wave strength measuring unit and the number of command failures counted by the communication result analysis unit If. Good value. The communication parameter optimum value memory unit lh stores the optimum value of the communication parameter corresponding to the strength of the response wave receiving wave from the wireless tag 3. Further, in the present embodiment, the communication result analysis unit If and the communication parameter adjustment unit lg are examples of the communication parameter determination unit, and the communication parameter optimum value storage unit lh is an example of the communication parameter information storage unit. Further, the antenna 2· is an antenna that is connected to the reader/writer 1 and performs wireless communication with the wireless tag 3. Further, the wireless tag 3 communicates with the read/write device 1. Further, the control PC 4 controls the reading and writing device 1 to perform communication with the wireless tag 3. The reader/writer device control unit 4a controls the reader/writer device 1. The read/write device interface 4b controls communication with the read/write device 1. Then, based on the strength of the response wave received from the wireless tag 3, the optimal value is derived from the communication parameter optimal value table and set, and when the command toward the wireless tag 3 is continuously succeeded or failed, the communication parameter is the most The operation of the read/write device whose optimum value in the best value table is corrected is described using FIG. 10 19 320350 1373731; FIG. 11 and FIG. Brother 1 〇 系 # 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认 认Take the good communication parameters (the upper limit of the number of test data) and the support conditions that should be satisfied when correcting the above-mentioned optimal value (the upper limit of the number of times of continuous failure of the communication). The most frequently recorded data at the parameter parameter =) Large: = is a flow chart showing a series of operations for reading and writing a large amount of data from the wireless tag 3 of the mounted body in the present embodiment. _ 1 Stomach w 7 Received using Figure 11 'Describes the map for optimizing communication parameters and reading/writing large amounts of data in response to the wave strength of the wireless tag response. ΐ = 2Fig. 2Π to 205 The same processing as in the eighth and ninth steps of the first embodiment. (1) Radio tag read/write request step - First, a procedure (U-FIG. 201) for transmitting/buying/writing requests from the control PC 4 to the read/write device 2 toward the radio tag 3 will be described. In the step, the read/write request from the control PC 4 is sent to the read/write device i via the genre writing device to the read/write device i. The device 1 receives the wireless tagging request by controlling the PC interface ia and proceeds to step 202. (2) Wireless tag ID reading/wave intensity measuring step Next, the wireless tag 3 is read for the reading/writing device i, and the step of returning the radio wave intensity to 320350 20 1373731 is measured (step 2 2). The communication quality measurement step) is explained. In step 202, the read/write device 1 transmits an iD read command to the wireless tag 3 from the receiving and transmitting control unit 1b via the transmitting unit 1c and the antenna 2. Further, when the wireless tag 3 responds, the id control is received by the receiving and receiving control unit 1b via the antenna 2 and the receiving unit Id, and the received wave strength measuring unit measures the intensity of the wave of the line response wave. Go to step 203. ❿ (3) Communication parameter optimization step Next, the step of optimizing the Z parameter (step 2G3 in Fig. u) (the final step) in accordance with the radio wave intensity measured in step 2〇2 will be described. / Number 13 estimated 2 steps 2〇3 'Communication parameter adjustment part lg is from the memory parameter in the memory value lh 笫丨n 瘅 瘅 杨 9 9 9 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 9 9 9 9 9 9 9 9 9 9 The optimal pass (4) user memory read/write execution step 204 is performed in accordance with the parameters of the helmets measured in step _202 and which are to be pushed toward the read/write position. For the read/write device 1 , the user memory of the wireless tag 3 (steps 204 to 206 of the wireless tag 3) is explained using the optimized message of step 2〇3. The step of writing is in step 204, the read/write device is optimized for the communication parameters (the read size/write is greater than the command that has been commanded in step 203, and is passed from the receiving and transmitting control unit 1b;) The read/write line label θ is sent and proceeds to step 2〇5. η.卩1c, antenna 2 and no step in the move, the response of the radio standard 3 to the write command is transmitted by the antenna 2, the receiving unit id, and the receiving and transmitting control unit lb is interrupted by 320350 21 1373731/ At the same time as the writing process is successful, the receiving wave power is required to be determined, and the radio wave strength of the wireless tag response is determined. When reading/writing processing gentry. P le Step 207. If it fails, the process proceeds to step 206. > then proceeds to step 206 t, and the receiving and transmitting control unit lb# breaks the number of retry executions of the read/write command in the event of a failure, and exceeds;; cattle = loss to optimize the communication parameters (instruction weight The upper limit of the number of trials is determined by the second or third digits being judged as a read/write processing error (err〇r), and the routine proceeds to step 212: when it is outdated, it is determined that the test is retryable and proceeds to step 2〇9. (5) Communication parameter optimum value change condition confirmation step 1 Next, the procedure for confirming whether to change the optimal value of the communication parameter when communicating with the wireless tag 3 (Fig. 2, Fig. 2, 2) 〇8) (Communication parameter decision step) is explained. ° Step 207 to. In step 207, when the step of receiving the response from the no-response is judged to be successful, the communication result is parsed by the instruction track of the observation parameter of the second display of the iron 3 (incremental). And it is expected that the shaft material fails to be cleared (4) q; = = command communication continuous success times, and memory in the communication parameters most: = and now (2) 2 . When the current age communication continuous shank number exceeds the optimal value change condition (when the number of consecutive communication successes is not exceeded, the process proceeds to step 2 „.) to enter the directional 208; and in step 208, the communication result analysis unit The η system judges that the communication environment is stable when the number of consecutive successes of the command communication of 320350 22 1373731 exceeds the optimal value change condition (the upper limit of the number of consecutive communication successes), and adjusts the communication parameters for the purpose of shortening the total communication time. The part lg increases the optimum value of the communication parameter (read data length or write data length) and proceeds to step 211. (6) Communication parameter optimal value change condition confirmation step 2 Next, for when with the wireless tag 3 When the command communication fails, the step of confirming whether to change the optimal value of the communication parameter (steps 209 to 210 in Fig. 11) (communication parameter determining step) is explained. In step 209, when receiving the wireless tag 3 in step 205 When the response is judged to be unsuccessful in the read/write process, the communication result analysis unit If the instruction communication of the currently applied communication parameter is continuously failed. Number, and clear the number of consecutive successes of the command communication to 〇. Moreover, the number of consecutive failures of the command communication, and the φ in the communication parameter optimal value table stored in the communication parameter optimal value memory unit lh The optimal value change condition (the upper limit of the number of consecutive communication failures) corresponding to the applicable communication parameter is compared. When the current number of consecutive failures of the command communication exceeds the optimal value change condition (the upper limit of the number of consecutive communication failures), the process proceeds to step 210; If it is not exceeded, the process proceeds to step 203. In step 210, the communication result analysis unit If, when the number of consecutive failures of the command communication in step 209 exceeds the optimal value change condition (the upper limit of the number of consecutive communication failures), it is determined as The communication environment is unstable, and the communication parameter adjustment unit lg is used to reduce the optimum communication parameter optimum value (read data length or write data length) for the purpose of improving communication stability, and proceeds to step 203 at 23 320350 1373731. (7) Full data read/write end confirmation step Next, the step of confirming whether the full data read/write is completed is Description (step 211 of FIG. 11) In step 211, it is judged whether the read/write of the size requested by the control PC 4 is ended in step 201, and when it is finished, it is judged that the read/write process is successful and the process proceeds to step 212; When it is finished, the process proceeds to step 204. (8) Execution result notification step Next, the step of notifying the control PC 4 of the execution result of the read/write process with respect to the wireless tag 3 (step 212 of Fig. 11) will be described. The receiving/receiving control unit 1b of the reading/writing device 1 notifies the control PC 4 of the result of the read/write processing via the control PC interface face la. As described above, the radio wave intensity is measured every time the response is received from the wireless tag, and the response is determined. By setting the optimal communication parameters, it is possible to instantly estimate the constantly changing communication environment and achieve high-speed and stable communication without being affected by changes in the communication environment. Moreover, since the number of successes of the command communication and the number of failures are considered, the optimum value of the communication parameters can be continuously maintained for the change of the communication environment, and the adaptability to the communication environment can be improved. As described above, in the present embodiment, the read/write device has a communication result analysis unit that analyzes the number of successful request requests from the read/write device and reflects the optimum value of the communication parameters. Further, in the present embodiment, the read/write device has a communication result analysis unit that analyzes the number 24 320350 1373731 \ number 'of failure of the command request from the reader/writer device and reflects it in the optimum value of the communication parameter. Finally, a description will be given of a hardware configuration example of the literary and literate work of the first jersey. & Fig. 12 is a diagram showing an example of a hardware resource that is not read or written in the first and second embodiments. Further, the configuration of Fig. 12 is merely an example of reading the hardware configuration of the device 1, and the hardware configuration of the read/write device j is not in the configuration described in Fig. 12, and may be other configurations. In Figure 12, the 'read and write device'! It is a Central Process in § Unit (also known as a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, processor). Cpu 911 ^ via bus 912 and, for example, ROM (Read 〇nly Mem〇ry) 913, RAM (Random Access Memory) 914, communication port 915, and disk device 920 connects and controls the = hardware device. In addition, you can also use flash memory, optical disc device, memory card reader and so on.
贏代替磁碟裝'置920。 U RAM 914為揮發性記憶體之一例。ROM 913、磁碟裝置 920等記憶媒體為不揮發性記憶體之一例。該等為記憶裝 置之一例。 通訊埠915為輸入裝置或輸出裝置之一例。 通訊埠915係如第6圖及第9圖所示地經由天線2而 可與無線標籤3進行無線通訊。另外，與控制PC連接。又， 通訊埠915亦可連接於LAN(Local Area Network ’區域網 路）、WAN(Wide Area Network，廣域網路）、網際網路等網 25 320350 1373731 . 路。 .* 於磁碟裝置920係記憶有作業系統921(OS)、視窗系 — 統922、程式群923、檔案群924。程式群923之程式係藉 由CPU 911、作業系統921、視窗系統922而執行。 於前述程式群923中，記憶有用以執行於本第1及第 2實施形態之說明中被作為「〜部」而說明之功能的程式。 程式係由CPU 911讀取而執行。 於檔案群924，係將於以下所述之說明中，表示被說 春 明為「〜判斷」、「〜計算」、「〜比較」、「〜檢測」、「〜控 制」等的處理之結果的資訊、資料、訊號值、變數值、參 數予以記憶為「〜檔案」或「〜資料庫」的各項目。「〜檔 案」或「〜資料庫」係被記憶於磁碟或記憶體等紀錄媒體。 被記憶於磁碟或記憶體等記憶媒體的資訊、資料、訊號值、 變數值、參數係經由讀取電路而由CPU 911讀取至主記憶 體或快取記憶體，而被用於抽出、搜尋、參考、比較、運 算、計算、處理、編輯、輸出、印刷、顯示等CPU動作。 於抽出、搜尋、參考、比較、運算、計算、處理、編輯、 輸出、印刷、顯示等CPU動作之間，資訊、資料、訊號值、 變數值、參數係暫時記憶於主記憶體、暫存器、快取記憶 體、緩衝記憶體等。 另外，於以下所說明的流程圖之箭頭部分係主要表示 資料和訊號之輸出入，資料和訊號值係記錄於RAM 914的 記憶體、磁碟裝置920之磁碟、或其他軟碟（flexible disk)、CD(compact disk)、光碟、迷你光碟（mini disk)、 26 320350 1373731 DVD(Digital Versatile Disc，數位多功能光碟）等記錄媒 體。另外，資料和訊號係藉由匯流排912、訊號線、纜線 等其他傳送媒體而線上傳送。 另外，於本第1及第2實施形態中被說明為「〜部」 者，亦可為「〜電路」、「〜裝置」、「〜機器」、「〜手段」， 另外，亦可為「〜步驟」、「〜程序」、「〜處理」。亦即，被 說明為「〜部」者由記憶於R〇M 913的韌體（farmware)實 現亦無妨。或者，由僅有軟體；或僅有元件、裝置、基板、 線路等硬體；或軟體與硬體之組合再加上韋刃體的組合而實 施亦無妨。韌體與軟體係作為程式而記憶於磁碟、軟碟、 光碟、CD、迷你光碟、講等記錄媒體。程式係由咖扪 $取’且由⑽11執行。亦即，程式為可使電腦功能為本 及第2實施形態之「〜部」者。或者，可使電腦執行 本第1及第2實施形態之「〜部」的程序和方法者。 如上所述，本第1及第2實施形態所示的讀寫裝置i 有作為處理裝置的CPU、作為記憶裝置的記憶體、磁 碟4、作為輸入裝置及輸出裝置的通訊埠等的電腦，係如 「〜部」的功能用前述處理裝置、記憶 裝置、輸入裝置、輸出裝置而實現者。 【圖式簡單說明】 憶體=:?有第1及第2實施形態之無_的記 第2圖（a)及（b)為顯示有第u 指令格式及寫入指令袼式之一例的圖。 开〜之續取 320350 27 1373731 第ί圖為顯元有第1及第2實施形態之因應收訊電波 強又，取資料長度之設定指針之-例的i。 第4圖為顧示有第1及第2實施形態之因應收訊電波 強度的寫人㈣長度之設定指針之-例的目。 第5圖為顯示有第工及第2實施形態之因應收訊電波 強度的指令4試錢上限之設定指針之—例的圖。 第6圖為顯示有第1實施形態之含有讀寫裝置的系統 構成例的圖。 第7圖為顯示有第丨實施形態之通訊參數最佳值表之 一例的圖。 第8圖為顯示有第i實施形態之讀寫裝置的動作例的 流程圖。 第9圖為顯示有第2實施形態之含有讀寫裝置 構成例的-圖。 …、、 第10圖為顯示有第2實施形態之通訊參數最佳值表之 一例的圖。 第11圖為顯示有第2實施形態之讀寫裝置的動作例的 流程圖。 第12圖為顯示有第1及第.2實施形態之讀寫裝置的硬 體構成例的圖。 【主要元件符號說明】 1 讀寫裝置 la 控制PC介面部 lb 收送訊控制部 lc 送訊部 Id 收訊部 le 收訊電波強度測定部 320350 28 1373731Win instead of the disk pack 'set 920. U RAM 914 is an example of volatile memory. A memory medium such as a ROM 913 or a disk device 920 is an example of a non-volatile memory. These are examples of memory devices. The communication port 915 is an example of an input device or an output device. The communication port 915 can wirelessly communicate with the wireless tag 3 via the antenna 2 as shown in Figs. 6 and 9. In addition, it is connected to the control PC. Further, the communication port 915 can also be connected to a LAN (Local Area Network), a WAN (Wide Area Network), an Internet, etc. 25 320350 1373731. * The operating system 921 (OS), the window system 922, the program group 923, and the file group 924 are stored in the disk device 920. The program of the program group 923 is executed by the CPU 911, the operating system 921, and the window system 922. In the program group 923, a program for performing the functions described as "parts" in the description of the first and second embodiments is stored. The program is executed by the CPU 911. In the file group 924, in the description below, it is indicated that the result of the processing such as "~Judgement", "~Calculation", "~Compare", "~Detection", "~Control", etc. Information, data, signal values, variable values, and parameters are memorized as "~Files" or "~Databases". "~File" or "~Database" is stored in a recording medium such as a disk or a memory. Information, data, signal values, variable values, and parameters that are memorized in a memory medium such as a disk or a memory are read by the CPU 911 to the main memory or the cache memory via the read circuit, and are used for extraction, Search, reference, compare, calculate, calculate, process, edit, output, print, display and other CPU actions. Information, data, signal values, variable values, and parameters are temporarily stored in the main memory and the temporary memory between CPU operations such as extraction, search, reference, comparison, calculation, calculation, processing, editing, output, printing, and display. , cache memory, buffer memory, and so on. In addition, the arrow portion of the flowchart described below mainly indicates the input and output of data and signals, and the data and signal values are recorded in the memory of the RAM 914, the disk of the disk device 920, or other flexible disk (flexible disk). ), CD (compact disk), CD, mini disk, 26 320350 1373731 DVD (Digital Versatile Disc, digital versatile disc) and other recording media. In addition, data and signals are transmitted on-line via other transmission media such as bus 912, signal lines, and cables. In addition, in the first and second embodiments, the description may be "~", and may be "~circuit", "~device", "~machine", "~ means", or " ~Steps, "~Programs", "~Processes". That is to say, it is also possible to implement the "Farmware" which is described as "~" in the firmware of R〇M 913. Alternatively, it may be implemented by a combination of only software; or only a hardware such as a component, a device, a substrate, or a line; or a combination of a soft body and a hardware plus a blade. Firmware and soft systems are stored as programs on disk, floppy disk, CD, CD, mini disc, and other recording media. The program is fetched by curry $ and executed by (10)11. That is, the program is such that the computer function is the same as the "~ part" of the second embodiment. Alternatively, the computer can execute the programs and methods of the "~ part" of the first and second embodiments. As described above, the read/write device i shown in the first and second embodiments has a CPU as a processing device, a memory as a memory device, a disk 4, and a communication device as an input device and an output device. The function of the "part" is implemented by the processing device, the memory device, the input device, and the output device. [Simple description of the figure] Memory =:? There are no _ in the first and second embodiments. Figs. 2(a) and (b) show an example of the u-th command format and the write command pattern. Figure. The continuation of the opening and the continuation of the 320350 27 1373731 is the i of the first and second embodiments in which the receiving signal wave strength is taken, and the setting pointer of the data length is taken. Fig. 4 is a view showing an example of the setting pointer of the length of the writer (4) in response to the radio wave strength in the first and second embodiments. Fig. 5 is a view showing an example of a setting pointer of the limit 4 of the command 4 for the received radio wave intensity according to the second and second embodiments. Fig. 6 is a view showing an example of a configuration of a system including a reader/writer device according to the first embodiment. Fig. 7 is a view showing an example of a communication parameter optimum value table in the third embodiment. Fig. 8 is a flow chart showing an operation example of the reading and writing device of the i-th embodiment. Fig. 9 is a view showing an example of the configuration of the read/write device according to the second embodiment. Fig. 10 is a view showing an example of a communication parameter optimum value table according to the second embodiment. Fig. 11 is a flow chart showing an operation example of the reading and writing device of the second embodiment. Fig. 12 is a view showing an example of the hardware configuration of the reader/writer apparatus according to the first and second embodiments. [Description of main component symbols] 1 Read/write device la Control PC interface lb Receive and receive control unit lc Transmitter Id Receiver le Received radio wave intensity measurement unit 320350 28 1373731
If 通訊結果解析部 lg lh 通訊參數最佳值記憶部 2 天線 3 4 控制PC 4a 4b .讀寫裝置介面部 911 912 匯流排 913 914 隨機存取記憶體 915 920 磁碟裝置 921 922 視窗系統 923 924 檔案群 通訊參數調整部 無線標籤 讀寫裝置控制部 中央處理器 唯言買記憶體 通訊埠 作業系統 程式群 29 320350If communication result analysis unit lg lh Communication parameter optimal value memory unit 2 Antenna 3 4 Control PC 4a 4b. Read and write device interface 911 912 Bus 913 914 Random access memory 915 920 Disk device 921 922 Window system 923 924 Archive group communication parameter adjustment unit wireless tag reading and writing device control unit central processor only buy memory communication 埠 operating system program group 29 320350