201122855 六、發明說明： 【發明所屬之技術領域】 >本發a歧有關於—種電子書查詢方法& 讀裝置，特別是有關於—種可$ 、 曰 的電子書版本賴術。 讓用戶直接查詢-實體書 【先前技術】 隨著環保意識日漸普及，無紙 機構研發的重點。電子書（b 5疋+夕研九 曰1e b00k)，指的是以電子盥數位 化方式替代傳統紙本圖書的方宏 +固曰的方案，讓傳統的紙質閱讀電 子化’也就疋以-台類似書本的可攜式電子書閱讀裝置 (㈣ader)閱讀數位化後的書籍内容，其内容為數位化的 文字格式或者其他格式的文檔。為了兼顧省電及延續紙 本閱讀經驗，可攜式電子書閱讀裝置配置的螢幕大 膽固醇液日日日螢幕、電子紙(e_papei>)螢幕或電子墨水(e_ink) 螢幕。以電子紙螢幕為例，其與我們常見—般纖維紙不 同，是一種包含許多「微小球體」（膠囊）的「導電」「高 刀子」材料，其外表與特徵與一般的紙一樣，具有柔軟 度又可重複顯示資料。 在電子紙技術之中’微小球體的大小代表顯示器像 素（Pixel)大小，其中微小球體的特色是會受到外在電壓 的驅動而改變其狀態，且改變狀態後電子紙便可維持其 狀態而不需持續電壓驅動，因此極具省電優勢；此外， 電子紙本身不發光所以使用者係依賴外界光源方能看清 201122855 子、’氏的,,、’貞示内谷’此特徵與傳統紙相似；電子紙導電 -总=-特色為可党到外界驅動電堡的改變，所以電子紙 f幕可不斷改變其顯示内容；最後電子紙使用高分子材 料是強調其可饒性(flexible)的特色，因此可以像一般紙 一樣的撓曲。 _細上所述，無論在顯示技術上或是使用者需求都顯 示出閱讀電子化已是日後的趨勢。然、而’當前使用者在 找尋數位化的電子書檔案時已面臨—重要問題。傳統紙 ❿本書籍皆有一全球通用的識別資料，即國際標準書號 (International Standard B〇〇k Number)，簡稱 isbn :因 此使用者可利用此ISBN查詢到相對應的傳統紙本書 籍，然而，目前電子書尚無全球統一的識別資料，大$ 是電子書出版商各自編碼，此舉造成電子書查詢困難。 再者，由於並非每一本紙本書籍都會有電子書版 本，所以當使用者在商店看到紙本書籍時，當下並無法 得知此紙本書籍是否有電子書版本’更無法決定是否'應 鲁購買此紙本書籍。如果能讓使用者在看到紙本書籍的 下便可查詢到是否有電子書版本，可讓使用者購^ 電子書的機會’進而降低紙張的消耗。 【發明内容】 有鑑於上述習知技藝之問題’本發明之其中一目的 就是在提供一種電子書查詢方法及電子書閱讀襄置，可 讓使用者更有效率地查詢電子書資訊。 201122855 根據本發明之目的，提出一種電子書查詢方法，用 於使用一電子書閱讀裝置查詢對應一實體書籍之一電子 :資訊電子書閱讀裝置具有一影像操取模組、一連網 ，、、’且、-螢幕及-資料處理模組。此電子書查詢方法包 IΓ列步驟。使用影像#貞取模組取得實體書籍之一識別 再使用資料處理模組從識別標籤分析出一國際標 》二號（International Standard B〇〇k Number，ISBN)碼。 接著，使用連網模組連線查詢對應ISBN碼的一書籍資 R再使用連網模組連線查詢對應所查詢到的書籍資訊 的-電子書資訊，繼之，將電子書資訊顯示於榮幕。 一電子紙螢幕 其中，螢幕係為一膽固醇液晶螢幕、 或一電子墨水螢幕。 二中，書籍資訊係從一麵資料庫中查 包含:作者名稱、一書名、-出版商名 出版曰期、一書籍類型或一譯者名稱。 /、中胃電子書資訊包含一下载資訊時，此電子蚩 =方法更包含根據下載資訊將對應實體#籍之電子: 赢案下載至電子書閱讀裝置。 句 此電子書查詢方法更包含根據電子書閱讀裝置 ·，、、員不規格資訊，過濾電子書資訊。 其中，顯线格資訊係包含此$幕的—色彩顯 訊或一螢幕反應時間資訊》 ，、貝 其包:==二:電工 201122855 ^處理模組。影像擷取模組係取得一實 •叙’資料處理模組從識別標籤分析出—識別標 制連網模la連線查詢對應ISBN碼的— 碼’再控 線查詢對應所查詢到的書籍f訊的訊，再連 電子書資訊顯示於螢幕。 电卞曰貝汛，再將 其t，此螢幕係為一膽固醇液晶螢 一 幕或一電子墨水螢幕。 電子紙螢 •籍-ΐ中’連網模組係連線一1SBN資料庫以杳绚出金 ’藉貝訊，此書籍資訊較佳包含 :旬出書 出版商名稱、一出版曰二者名稱、-書名、- 山其中’此電子書閱讀裝置更包含一用戶摔作人：。 ί電子書資訊包含-下載資訊時，用戶二 此電子書閱應貫體書籍之電子書槽案下载至 _電子^訊資料處理模組係根據—顯示規格資訊，過遽 訊或格資訊係包含此螢幕的—色彩顯示資 κ及螢幕反應時間資訊。 電子月ΐ目的，又提出透過實體書檢索相對應 的一;像擷敗握匕含下列步驟。使用一電子書閱讀裝置 據識別mi取得一實體書籍之一識別標藏，再根 t=t SBN碼’根據此ISBN碼，透過電 名i、1查的一連網模組連線查詢實體書籍的一作者 Θ名或出版商名稱，最後將電子書的相關資 7 201122855 訊顯示於螢幕。 承上所述，依本發明之電子書查詢方法及其電子書 閱讀裝置，其可具有下述優點： 此電子書查詢方法及其電子書閱讀裝置可藉由影像 擷取模組直接取得對應實體書籍的相關資訊，藉此可可 讓使用者更有效率地查詢電子書資訊。 【實施方式】 請參閱第1圖，其係為本發明之電子書閱讀裝置之 方塊圖。圖中，電子書閱讀裝置包含一影像擷取模組u、 連網模組12、一螢幕13、一資料處理模組14及一儲 存模組17。螢幕13較佳為一膽固醇液晶螢幕、一電子 、’、氏螢幕或電子墨水螢幕等適合顯示電子書内容供使用 者閱讀並兼顧省電的功效者。影像擷取模組u係取得— 實體書籍10之一識別標籤1〇1。其中，影像擷取模組u 較佳為一條碼讀取器（bar c〇de reader)、互補金屬氧化半 導體（CMOS)或-電荷麵合元件（CCD)等影像感測器，而 上述所謂識別標籤1〇1係為實體書籍1〇上表面印刷 ISBN碼區域的-對應光訊號或是影像 模組Μ從識別標籤101分析出一國際^^ (International Standard Book Number, ISBN)碼 102。 繼之，資料處理模組14控制連網模組12連線一 ISBN資料庫161，以查詢出對應ISBisM| 1〇2的一查 資訊15卜例如作者名稱、-書名、-出版商名稱二 201122855 ^版日期、一書籍類型或一譯者名稱；此外，亦需要亦 y再連線其他服務網站162以查詢出此實體書籍10的販 •點售彳貝金額、一書評或一閱讀心得等額外的書 籍資訊152。其中，連網模組12較佳為一有線網路模組曰、 或一無線網路模組，例如WLAN模組、WIFI模組、 模組、或是無線通訊模組，例如GpRS模組或是一 3 模組。 小一繼之，資料處理模組14再控制連網模組12連線至 夕一電子書資料庫163查詢一對應所查詢到的書籍資訊 :5:的冑子書資訊153，例如對應此實體書籍1〇的電 _ 的一售價金額、一檔案大小、-適用的閱讀器種 、么否内含多媒體内容、有出版此電子書的出版商等 處理模組14再將此電子書資訊153顯示 ^幕3。資科處理模組14較佳為一微處理器或一控 其上述的功能可以硬體方式來實施或是以可程 ϋ執行敎程式的軟體方式來實施。此外，由於目 查球統一的電子書規格，所以各家電子書商的 電子書檔案以及電子蚩間靖哭六 t^ ^ ^7曰閱讀态存在相谷性的問題，所以 需要亦可根據電子書閱讀裝置的- :招、=貝4,過遽所接收之電子書資訊心所 資訊可包含螢幕的—色彩顯示資訊、-螢幕反庫 時間資訊或是資料虛描如^ a爭久應 1 , M v *〜 模組 可處理的檔案格式資 檔案可在此電子書閱讀裝置執曰貝訊下載的電子書 如此，使用者在商店看到紙本書籍時，當下便可方 201122855 便得知此紙本書葬a χ 7 訊；而且使用者^有電曰版本以及其他相關資 义―不需鍵入文字便可進行有效率的查詢； 目别每一個電子書出版商都是使用自己的資料 杳有可能不知道有哪些電子書出版商，而 題所以本發明的電子書嶋置可以有 Ϊΐι第2圖’其係為本發明之電子裝置之 C鬼圖。圖中，電子書閱讀裝置在實施上包含一 OS模組21、一 wm模組22、一電子紙螢幕幻、一 unrv —/快閃記憶體2 7及—用戶操作介面2 9。 有IS· i^1係用以及操取實體書籍10的書面上印刷 體27 區域影像2G1，微控制11 24係從快閃記憶 2二像辨識程式Μ並執行之，藉此從影像 紙皆有獨—的 體，書籍1〇的相關資料’所以微控制器24透過 杳出實體且查資料庫161連線’根據1SBN碼102 稱以！書籍資訊151，例如書名、作者名 稱以及出版商名稱。 月J尚"、、上述ISBN碼機制規範所有的電子堂， 商有其自訂的書籍管理機制，所“控 及第-雷早^:漁22分別與第一電子書資料庫262 庫263連線，以分別根據書籍資訊151 於兩個電子書資料庫進抒杳 子蚩以及下澈咨 侍是否有對應的電 千曰以及下載資訊253、254。微控制器24接收到第一 201122855 下載資訊253及第二下載資訊254後，由資料過遽單元 241根據一顯示規格資訊對第一下載資訊253及第二下 載資訊254進行過遽。將其顯示於電子紙螢幕^上，用 戶可透過用戶操作介面29來選擇其―，微控制器24便 透過WIFI模組22連線所選之電子書資料庫下載電子書 檔案28。下載後’微控制器24可執行閱讀程式272開 啟電子書檔t 28，以顯示其内容於電子書勞幕23上攻 用戶閱讀。 請參閱第3 ® ’其係為本發明之電子書查詢方法之 流程圖。圖中，此方法用於使用—電子書閱讀裝置查詢 對應-實體書籍之-電子書資訊，電子書閱讀裝置具有 -影像擷取模組、-連網模組一螢幕及—資料處理模 組’ ^方法包含下列步驟。在步驟3丨使用影像操取模組 取付實體書籍之-識別標籤，在步驟32使用資料處理模 組從識別㈣分析$ — _際標準錢（贿i Standard Book Number ’ ISBN)碼。接著，在步驟 3 用連網模組連㈣詢對應ISBN碼的—f籍資訊，在步 驟34使用連簡組連線查詢—對應所查詢到的書籍 Si電子書資訊，繼之，在步驟35將電子書資訊‘示 請參㈣4®，其料本發明之電子# 貫施流程圖。圖中，丨士宭谂沒# 7么ώ — 古之 電子盒㈣哭！實 係適用於第2圖所示之 :子曰閲讀器。在步驟41使用CM0S模組取得實體奎 42以影像處理從上述影像分析出： 國際‘準曰唬碼。在步驟43連線國際標準書號資料庫查 11 201122855 詢一書籍資訊。在步驟44連線 下載資訊的電子書資訊。在步二ί = 資;根據顯示規格資訊： 杉顯不資訊或螢幕反應時間資訊赏：旳色 據資料處理模組可處理的樓案格 ^慮’亦或根 定使用者根據此電子書資;;載=:荦； 在此電子書閱讀裝置執行。 电于曰檔案可 接著，在步驟46顯示p μ、* μ @▲ Μ Μ苴*貝不已過濾的電子書資訊於一電子 紙螢幕。在步驟47判斷使用者衫 5 子書書:是案至=:所選之電子書資料庫下載-電 更，均應包含於後附之申請專利範圍中。 一 【圖式簡單說明】 第1圖係、為本發明<電子書閱讀裝置之方塊圖； 第2圖係為本發明之電子書閱讀裝置之實施方塊圖； 第3圖係為本發明之電子書查詢方法之流程圖；以及 第4圖係為本發明之電子書查詢方法之實施流程圖。 【主要元件符號說明】 10 :實體書籍 101 :識別標籤 12 201122855 ‘ 102:國際標準書號碼 11:影像擷取模組 12 :連網模組 13 :螢幕 14 :資料處理模組 151、152 :書籍資訊 153 :電子書資訊 161 :國際標準書號資料庫 162 :服務網站 • 163 :電子書資料庫 17 :儲存模組 201 :影像 21 : CMOS 模組 22 : WIFI 模組 23 :電子紙螢幕 24 :微控制器 241 :資料過濾單元 252、253 :下載資訊 262、263 :電子書資料庫 27 :快閃記憶體 271 :影像辨識程式 272 :閱讀程式 28 :電子書檔案 29 :用戶操作介面 31〜35 :步驟流程 41〜48 :步驟流程 13201122855 VI. Description of the invention: [Technical field to which the invention pertains] > The present invention relates to an e-book inquiry method & reading device, and more particularly to an e-book version of the e-book. Let users directly inquire - physical book [Prior technology] With the increasing awareness of environmental protection, the focus of paperless organization research and development. The e-book (b 5疋+夕研九曰1e b00k) refers to the method of replacing the traditional paper books with the digital + digitalization method, so that the traditional paper reading electronically - A portable e-book reading device similar to a book ((4) ader) reads a digitalized book content, the content of which is a digital text format or a document of other formats. In order to balance power saving and continue the experience of paper reading, the portable e-book reading device is equipped with a screen of large cholesterol liquid day and day screen, electronic paper (e_papei>) screen or electronic ink (e_ink) screen. Take the electronic paper screen as an example. It is a kind of "conducting" and "high knife" material containing many "micro spheres" (capsules). It has the same appearance and characteristics as ordinary paper. The data can be displayed repeatedly. In the electronic paper technology, the size of the tiny sphere represents the size of the display pixel. The microsphere is characterized by being driven by an external voltage to change its state, and the electronic paper can maintain its state without changing the state. It needs to be driven by continuous voltage, so it has the advantage of saving electricity. In addition, the electronic paper itself does not emit light, so the user relies on the external light source to see the 201122855, '', ', '' Similar; electronic paper conduction - total = - characteristic of the party to the outside drive the change of the electric castle, so the electronic paper f screen can constantly change its display content; finally, the use of polymer materials in electronic paper is to emphasize its flexible (flexible) Features, so you can flex like normal paper. As described above, both display technology and user needs have shown that reading electronic is a trend in the future. However, 'current users are already facing important issues when looking for digital e-book archives. Traditional paper books have a globally recognized identification material, the International Standard B〇〇k Number, or isbn: so users can use this ISBN to query the corresponding traditional paper books, however, currently There is no globally uniform identification material for e-books, and the big $ is the respective code of e-book publishers, which makes e-books difficult to query. Moreover, since not every paper book will have an e-book version, when the user sees a paper book in the store, it is impossible to know whether the paper book has an e-book version or not. Lu purchased this paper book. If the user can see if there is an e-book version under the paper book, the user can purchase the e-book opportunity, thereby reducing the paper consumption. SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, one of the objects of the present invention is to provide an e-book enquiry method and an e-book reading device, which enable a user to query e-book information more efficiently. According to the purpose of the present invention, an e-book query method is provided for querying one of the electronic books corresponding to an entity book using an e-book reading device: the information e-book reading device has an image manipulation module, a network, and a And, - screen and - data processing module. This e-book query method package I steps. Use the image # capture module to obtain one of the physical books. The data processing module then analyzes an International Standard B〇〇k Number (ISBN) code from the identification tag. Then, using the networked module connection to query a book corresponding to the ISBN code, and then use the networked module connection to query the e-book information corresponding to the book information that is queried, and then display the e-book information in Yurong. screen. An electronic paper screen, wherein the screen is a cholesterol liquid crystal screen, or an electronic ink screen. In the second, the book information is checked from a database: the author's name, a book name, the publisher's name, the publication period, a book type, or a translator's name. /, Zhongwei e-book information contains a download information, this electronic 蚩 = method also includes the corresponding entity according to the download information #本之电子: Win the case to the e-book reading device. This e-book query method also includes filtering e-book information according to the e-book reading device, and the non-specific information. Among them, the display line information contains the screen-color display or a screen reaction time information, and the package: == two: electrician 201122855 ^ processing module. The image capture module obtains a real-reported data processing module from the identification tag--identification of the standard network mode la connection query corresponding ISBN code - code 're-control line query corresponding to the book f The newsletter, and then the e-book information is displayed on the screen. Electric 卞曰 汛, and then t, this screen is a cholesterol liquid crystal screen or an electronic ink screen. E-paper 萤 籍 籍 籍 籍 籍 籍 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 ' 连 ' 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连 连- Book title, - Shanzhong' This e-book reading device also contains a user who is a singer:电子 e-book information contains - when downloading information, the user's e-book reading the e-book slot of the book is downloaded to the _ electronic ^ data processing module based on - display specification information, over the information or grid information contains This screen's color display shows information on κ and screen response time. For the purpose of e-monthly, it is also proposed to search for the corresponding one through the physical book; Using an e-book reading device, according to the identification mi, one of the physical books is identified, and then the t=t SBN code is used. According to the ISBN code, a network module connected by the electric name i and 1 is used to query the physical book. An author's name or publisher's name, and finally the e-book related information 7 201122855 is displayed on the screen. According to the present invention, the e-book inquiry method and the e-book reading device thereof have the following advantages: The e-book inquiry method and the e-book reading device can directly obtain the corresponding entity by using the image capturing module. Information about books, which allows users to query e-book information more efficiently. [Embodiment] Please refer to Fig. 1, which is a block diagram of an electronic book reading device of the present invention. In the figure, the e-book reading device comprises an image capturing module u, a networking module 12, a screen 13, a data processing module 14, and a storage module 17. The screen 13 is preferably a cholesterol liquid crystal screen, an electronic, ', a screen or an electronic ink screen, which is suitable for displaying the contents of the e-book for the user to read and balance the power saving effect. The image capture module u is acquired - one of the physical books 10 identifies the tag 1〇1. The image capturing module u is preferably an image sensor such as a bar reader or a complementary metal oxide semiconductor (CMOS) or a charge surface sealing device (CCD). The label 1〇1 is a physical book 1 〇 upper surface printed ISBN code area-corresponding optical signal or image module Μ an international standard book number ( ISBN) code 102 is analyzed from the identification tag 101. Then, the data processing module 14 controls the networking module 12 to connect an ISBN database 161 to query a search information corresponding to the ISBisM| 1〇2, such as the author name, the title, and the publisher name 2 201122855. ^ version date, a book type or a translator name; in addition, it is also necessary to re-connect to other service websites 162 to inquire about the sales of this physical book 10, the amount of mussels sold, a book review or a reading experience. Book information 152. The network module 12 is preferably a wired network module, or a wireless network module, such as a WLAN module, a WIFI module, a module, or a wireless communication module, such as a GpRS module or It is a 3 module. Xiaoyi, the data processing module 14 then controls the networking module 12 to connect to the Xiyi e-book database 163 to query a book information corresponding to the query: 5: the dice book information 153, for example, corresponding to the entity The price of a book, the size of a file, the size of a file, the type of reader that is applicable, the multimedia content, the publisher who has published the e-book, and the like, and the processing module 14 Display ^Screen 3. The subscribing processing module 14 is preferably a microprocessor or a software controlled by the above-described functions that can be implemented in a hardware manner or in a software manner in which the program can be executed. In addition, due to the uniform e-book specifications of the ball, the e-book archives of various e-book vendors and the electronic 蚩 靖 六 t t t t t t t t t t t t t t t t t t t t t t t t Book reading device - : 招, = 贝 4, the e-book information received by the 遽 心 information can include the screen - color display information, - screen anti-library time information or data virtual description such as ^ a long time should be 1 , M v *~ The file format file that can be processed by the module can be used in this e-book reading device to execute the e-book downloaded by Beixun. When the user sees the paper book in the store, the current can be found at 201122855. This paper book is buried a χ 7 news; and the user ^ has the eDonkey version and other related stipulations - no need to type text for efficient inquiry; each e-book publisher uses their own data It may not be known which e-book publishers, and the e-book arrangement of the present invention may have a C-ghost map of the electronic device of the present invention. In the figure, the e-book reading device comprises an OS module 21, a wm module 22, an electronic paper screen, an unrv-/flash memory 27 and a user operation interface 29. There is an IS·i^1 system and a written print 27 area image 2G1 of the physical book 10, and the micro control 11 24 is executed from the flash memory 2 image recognition program, thereby performing from the image paper. The unique body, the book 1 〇 related information 'so the microcontroller 24 through the output entity and check the database 161 connection 'according to the 1SBN code 102! Book information 151, such as title, author name, and publisher name. Month J Shang ",, the above ISBN code mechanism regulates all the electronic churches, the business has its own book management mechanism, the "control and the first - Lei early ^: fishing 22 and the first e-book database 262 library 263 Connected to the two e-book databases according to the book information 151, and whether there is a corresponding electric 曰 and the download information 253, 254. The microcontroller 24 receives the first 201122855 download information. After the 253 and the second download information 254, the data downloading unit 241 performs the first download information 253 and the second download information 254 according to a display specification information, and displays the information on the electronic paper screen ^, and the user can pass the user. The operating interface 29 is selected to operate, and the microcontroller 24 downloads the electronic book file 28 through the selected electronic book database connected to the WIFI module 22. After downloading, the microcontroller 24 can execute the reading program 272 to open the electronic book file. 28, to display its contents on the e-book curtain 23 attack user reading. Please refer to the 3 ® ' is a flow chart of the e-book inquiry method of the present invention. In the figure, this method is used for use - e-book reading device check Corresponding-physical book-e-book information, e-book reading device has - image capturing module, - network module one screen and - data processing module '^ method includes the following steps. In step 3, using image manipulation The module takes the physical book-identification tag, and in step 32, uses the data processing module to analyze (4) the $-_ standard book number ' ISBN' code. Then, in step 3, the network module is connected. (4) Inquiring to the information of the corresponding ISBN code, and in step 34, using the connection of the simplified group connection--corresponding to the book Si e-book information that is queried, and then, in step 35, the e-book information is displayed as (4) 4®, The material of the present invention is a flow chart. In the figure, the gentleman does not have #7么ώ — the ancient electronic box (four) crying! The real system is applicable to the picture shown in Fig. 2: the sub-reader. 41 Use the CM0S module to obtain the entity Kui 42 to analyze the image from the above image by image processing: International 'quasi-code. Connect to the International Standard Book Number Database 11 in step 43 201122855 Ask a book information. Connect the information in step 44. E-book information. In step 2 ί = 资; according to the display specification information: 杉显不资讯 or screen response time information reward: 旳色 according to the data processing module can handle the case of the case ^ consider or root users according to this e-book; Load =:荦; Performed in this e-book reading device. The electric file can then be displayed in step 46 to display p μ, * μ @▲ Μ Μ苴* the filtered e-book information on an electronic paper screen. 47 Judging User's Shirt 5 Sub-books: Yes to ==: The selected e-book database download-Electricity should be included in the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an e-book reading apparatus of the present invention; FIG. 2 is a block diagram of an implementation of the e-book reading apparatus of the present invention; A flowchart of an e-book query method; and FIG. 4 is a flowchart of an implementation of the e-book query method of the present invention. [Main component symbol description] 10: Entity book 101: Identification tag 12 201122855 ' 102: International standard book number 11: Image capture module 12: Network module 13: Screen 14: Data processing module 151, 152: Books Information 153: E-book Information 161: International Standard Book Number Database 162: Service Website • 163: E-Book Database 17: Storage Module 201: Image 21: CMOS Module 22: WIFI Module 23: Electronic Paper Screen 24: Micro Controller 241: data filtering unit 252, 253: download information 262, 263: e-book database 27: flash memory 271: image recognition program 272: reading program 28: e-book file 29: user operation interface 31~35: Steps 41 to 48: Step Flow 13