200844849 • 九、發明說明： 【發明所屬之技術頜域】 本發明為一種多點協同遠距醫療會診系統，特別係為 一種藉由寬頻網路以進行遠距醫療會診的多點協同遠距醫 療會診系統。 【先前技術】 傳統的醫療會診大多需要在同一個醫療院所中進 行，醫生在同一個地方進行醫療影像與疾病的討論；而在 現有的遠距醫療會診技術中，醫生之間只能透過電話咬視 訊會議的方式進行會診，在此方法下，醫療影像中病理特 徵與位置只能透過口述轉達，容易造成醫生之間認知上的 誤差，因此無法有效地進行醫療影像與疾病的討論。如此 將造成醫療資源不易整合，增加醫生與病患聯合診治的困 難。 下一代網路系統(Next Generation Network，NGN)產生 0 封包基礎聚合於到通訊環境，其允許聲音、視訊及資料一 起通過單一整合的寬頻網路。藉由逐步形成的技術及整合 型異質網路升級功能的驅動，下一代網路系統，就許多觀 點而言，其使得網路通信戲劇性地變為更有效率、便利和 節省成本。 近幾年來，許多研究人員致力於發展遠端醫療系統以 提供遠端照護資訊的傳輸。不過，傳統的傳輸技術，限制 了系統的功能性，例如只提供點對點服務，未考慮不同的 網路基礎設施、不良的計算機支援合作工作 (Computer_supported Cooperative Work, CSCW)環境、以及 200844849 ， 安全策略的缺乏等。點對點的架構也限制了參加者的數 量，因此阻礙了其本身在多點連接上的應用能力，例如多 點會商及遠距教學等。另一方面，一些傳統的遠距會診系 統為了傳送不同的資料，包括聲音、視訊、醫療影像及病 人資料，需要不同的網路基礎設施。這表示了它需要更多 的設備及費用以運作系統，而這些可能成為醫院使用系統 的一個主要問題，也限制了系統的可行性。 為提供醫生一個合作討論的環境，一個包括分享工作 〇 區及會議系統的計算機支援合作工作模組是必要的。現有 的系統經常使用現成的計算機支援合作工作解決方案提供 合作工作，例如網路視訊(NetMeeting)，這種方法將再次限 制参加會議的人員數量；而且，現成的軟體通常把應用程 式或桌面的分享當作分享工作區，這將強迫用戶端毫無選 擇地執行完全相同的功能。另一方面，當用戶端從它的相 關病患資訊系統存取病患記錄時，這也可能會引起安全問 題。大多數現成計算機支援合作工作軟體傳送整個應用程 (j 式視窗的影像以維護分享工作區，因此頻寬的要求變大， 而且將視參加者的人數及應用程式視窗的解決方案而定。 .這種方法將造成用戶端失去調整他的視窗以適應最佳螢幕 尺寸的選擇。另外，由於現成的計算機支援合作工作軟體 被設計為符合一般用途使用，且採用了作業系統内建的視 訊會議系統，其並沒有針對應用程式與環境的不同，進行 資料傳送的優先權分配，如此造成頻寬的配置失去彈性， 最後導致頻寬的使用上變得沒有效率。 7 200844849 • 【發明内容】 本發明係要解決習知透過電話或視訊會議的方式進 行會診時，醫療影像中病理特徵與位置只能透過口述轉 達，容易造成醫生之間認知上的誤差，因此無法有效地進 行醫療影像與疾病的討論，且因為醫療資源不易整合，增 加醫生與病患聯合診治的困難。又發明係要提供遠距醫療 會診之環境，給予兩位以上之醫師，使其能夠進行遠端之 聯合會診行為。 (Λ 為達上述之目的，本發明提供一種多點協同遠距醫療 會診系統，係應用於一寬頻網路環境中，其包括：一用戶 端會診系統及一伺服器端會診系統。 用戶端會診系統，其具有：一第一醫療影像分析及處 理模組，用以對所接收之影像進行分析及處理；一第一資 料保密及驗證模組，用以保護及驗證所接收之資料；以及 一第一計算機支援合作工作模組，用以進行遠端之協同作 業及同步功能。 (J 伺服器端會診系統，藉由寬頻網路與用戶端會診系統 進行連接，其具有··一第二醫療影像分析及處理模組，用 _ 以對所接收之影像進行分析及處理；一第二資料保密及驗 證模組，用以保護及驗證所接收之資料；一第二計算機支 援合作工作模組，用以進行遠端之協同作業及同步功能； 一會議記錄模組，用以追蹤第二計算機支援合作工作模組 所進行電子化會診之事件；一註冊及認證模組，用以負責 使用者之註冊、維護註冊者資料庫、產生及管理安全金鑰； 以及一協調模組，用以維護註冊及認證模組之一致性及操 8 200844849 . 作所有參與者間之資料交換。 藉由本發明的實施，至少可以達到下列之功能： 一、 視訊與遠端滑鼠指標（Tele-pointer)同步討論功能。除 了傳統的視訊會談功能外，本發明整合遠端滑鼠指標 同步功能’使遠端與本地端可同時看見兩端之滑鼠指 標，其可用來輔助描述醫療影像特定區域，藉此避免 醫生之間在口頭描述影像時’產生認知上的誤差。 二、 醫療影像傳送與處理功能。本發明整合醫療影像的同 〇 步傳輸與處理功能，當參與會診的某位醫生調閱出某 張特定影像時，系統可同步傳送影像給其他參與會診 的醫生，使得所有醫生皆可觀察到同一張影像，可避 免傳統會診中，影像描述與傳遞的困難。 三、 支援醫用數位影像與通訊標準DICOM3.0，得以與醫 院内部之醫學影像儲存與傳輸系統（Picture Archiving and Communication System，PACS)相連接。 四、 彈性化地共享人機介面功能。此功能可使參與者依據 (J 自己的習慣安排所有功能元件的位置，包括有視訊視 窗、繪圖功能元件、與會談狀態視窗等，藉此功能使 . 得參與會診之醫生可舒適與方便地使用本系統。 五、 系統資料傳送優先排序功能。透過控制訊息的拆解與 優先佇列，根據其資料的重要性與特性，分配不同的 優先權與通訊協定，使其可以在任何網路頻寬下，皆 可達到最佳效能。 【實施方式】 9 200844849 _ 如圖一所示，係為本發明之一種多點協同遠距醫療會 診系統3 0實施例圖。本實施例之多點協同遠距醫療會診系 統30，係被設計成為一應用於寬頻網路環境中之主從式電 腦系統，在架構於微軟視窗作業系統的伺服器42平台上， 提供多用戶端41服務。 本實施例之系統包括：一用戶端會診系統10及一伺服器端 會診系統20。用戶端會診系統10，具有：一第一醫療影像 分析及處理模組11 ; 一第一資料保密及驗證模組12以及 f、 一第一計算機支援合作工作模組13。伺服器端會診系統 20，具有：一第二醫療影像分析及處理模組2〗；一第二資 料保密及驗證模組22 ; —第二計算機支援合作工作模組 23 ; —會議記錄模組24 ; —註冊及認證模組25以及一協 調模組26。值得注意的是，不同位置之間的網路資料傳輸， 都會透過資料的保密及驗證服務，使得資料傳輸具有保密 及隱密的功能。 如圖二所示，係為本發明之一種多點協同遠距醫療會 ^ 診系統，其角色與使用者優先權及權限對照實施例圖。本 實施例之多點協同遠距醫療會診系統中定義了四種使用者 ; 角色，其包括：系統管理者、會議發起者、一般使用者以 及觀眾。不同的角色有不同的特權、操作權限及優先權限。 系統管理者，具有系統管理權限，例如··帳號的創設 與刪除、會議管理的最高優先權、以及所有操作的權限。 會議發起者具有會議管理權限，例如邀請使用者，踢除問 題使用者，改變一般使用者與觀眾的角色，使其具有第二 順位優先權及所有操作的權限。一般使用者具有第三順位 200844849 /優先權及所有操作的權限，但是沒有管理會議及系統的權 限。觀眾具有最低的優先權，沒有任何權限操作影像，其 在會診期間必須一直保持沉默，而且不允許傳送遠端滑鼠 指標或聲音/視訊封包。根據以上所述，系統可以避免問題 使用者破壞或干擾會診。這樣的設計在利用多點遠距醫療 系統進行遠距教學時是很重要的。 當伺服器42接收到來自用戶端41的影像分析及處理 命令時，第一醫療影像分析及處理模組11及第二醫療影像 p 分析及處理模組21，均用以對所接收之影像進行分析及處 理。另外，當會議開始時，系統會將命令接收時間、命令 發起者、命令碼、以及命令相關聯的參數組織成為事件記 錄，並儲存在事件記錄檔内。會診進行的同時，醫療影像 檔案與其相關命令，例如：醫療影像取回命令，也將同樣 的被儲存於記錄檔案中。由於事件的記錄，會診活動的過 程得以被檢視與回顧，因此可以達到教育和訓練的會診案 例建立的目的。 Q 第一資料保密及驗證模組12及第二資料保密及驗證 模組22，用以保護及驗證所接收之資料。資料安全性在遠 .距會診系統也是非常重要的問題，因為病人資料是非常私 人的。為了會診，醫療影像的病人貧料、病人記錄及診斷 報告必須透過網路來傳輸；然而，這些資料將可輕易的被 觀看及改變。為了保護這些個人隱私及維持資料的保密性 與完整性，資料保密及驗證模組必需被整合於遠距會診系 統中。在本實施例的系統中，採用編碼複雜性較低的國際 數據加密演算法（International Data Encryption Algorithm， 200844849 IDEA)加密影像，而對於用戶端41認證與安全您给自丄 換，則使用非對稱與高複雜性編碼的RSA。 、馬的父 第一計算機支援合作工作模組13及第二钟曾4k ^ jb 4^： 合作工作模組23，用以進行遠端之協同作業及同步 第一計算機支援合作工作模組13，包含有一第能。 會議模組131及一第一分享工作區132。第二曾 ° 口 I 才女去义念 Ο Ο 合作工作模組23,包含有一第二視訊/音訊會議模組 一第二分享工作區232。當醫生或放射師在與其他專〜及 行具有地理間隔的遠距討論時，這些會談工具用^、豕進 離所造成的間隙。另外，此模組亦提供使用者之間對=距 件與工作空間的支援協同工作所需的同步功能。 、；文 第一視訊/音訊會議模組131及第二視訊/音訊會< “ 組23卜係應用微教通訊應用程式介面（MiCr〇s〇ft TeJ ^杨200844849 • Nine, invention description: [Technology jaw domain to which the invention belongs] The present invention is a multi-point coordinated telemedicine consultation system, in particular, a multi-point coordinated telemedicine for telemedicine consultation through a broadband network. Consultation system. [Prior Art] Most of the traditional medical consultations need to be carried out in the same medical institution. Doctors conduct medical imaging and disease discussions in the same place. In the existing telemedicine consultation technology, doctors can only use the telephone. The method of biting a video conference is to conduct consultations. Under this method, the pathological features and positions in medical images can only be conveyed through oral presentation, which is easy to cause cognitive errors between doctors, so it is impossible to effectively discuss medical images and diseases. This will make it difficult to integrate medical resources and increase the difficulty of joint diagnosis and treatment between doctors and patients. The Next Generation Network (NGN) generates a 0-packet infrastructure that is aggregated into a communications environment that allows voice, video, and data to pass through a single, integrated broadband network. Driven by step-by-step technologies and integrated heterogeneous network upgrades, next-generation network systems have dramatically improved network communications to be more efficient, convenient, and cost-effective. In recent years, many researchers have worked to develop remote medical systems to provide transmission of remote care information. However, traditional transmission technologies limit the functionality of the system, such as providing only peer-to-peer services, not considering different network infrastructure, poor Computer_supported Cooperative Work (CSCW) environment, and 200844849, security policy. Lack of waiting. The peer-to-peer architecture also limits the number of participants, thus hindering their ability to apply on multipoint connections, such as multipoint conferencing and distance learning. On the other hand, some traditional teleconsultation systems require different network infrastructures to deliver different data, including voice, video, medical imaging and patient data. This means that it needs more equipment and costs to operate the system, and these may become a major problem in hospital use systems and limit the viability of the system. In order to provide a collaborative discussion environment for doctors, a computer support collaborative work module including sharing work areas and conference systems is necessary. Existing systems often use off-the-shelf computer support collaborative work solutions to provide collaborative work, such as NetMeeting, which again limits the number of people attending the conference; and off-the-shelf software typically shares applications or desktops. As a shared workspace, this forces the client to perform the exact same function without any choice. On the other hand, this can also cause security problems when the client accesses patient records from its associated patient information system. Most off-the-shelf computer support collaboration software delivers the entire application (images of the j-type window to maintain the shared workspace), so the bandwidth requirements become larger and will depend on the number of participants and the solution for the application window. This method will cause the user to lose the option of adjusting his window to suit the optimal screen size. In addition, since the ready-made computer support cooperative software is designed to be used for general purposes, and the videoconferencing system built into the operating system is used. It does not assign the priority of data transfer to the difference between the application and the environment, thus causing the configuration of the bandwidth to lose flexibility, and finally the use of the bandwidth becomes inefficient. 7 200844849 • [Invention] The present invention In order to solve the problem of knowing the way through telephone or video conferencing, the pathological features and location of medical images can only be conveyed through oral communication, which is easy to cause cognitive errors between doctors, so it is impossible to effectively discuss medical images and diseases. And because medical resources are not easy to integrate, increase doctors and diseases Difficulties in joint diagnosis and treatment. The invention also provides an environment for telemedicine consultation, giving more than two physicians the ability to conduct joint consultations at the far end. (Λ For the above purposes, the present invention provides a multi-point The collaborative telemedicine consultation system is applied to a broadband network environment, and includes: a client consultation system and a server consultation system. The client consultation system has: a first medical image analysis and processing module a group for analyzing and processing the received images; a first data privacy and verification module for protecting and verifying the received data; and a first computer supporting cooperative working module for remotely Collaborative operation and synchronization function (J server-side consultation system, which is connected to the client consultation system through a broadband network, which has a second medical image analysis and processing module, and uses _ to receive the Image analysis and processing; a second data privacy and verification module to protect and verify the received data; a second computer support cooperative working model a group for remote collaborative operation and synchronization; a conference recording module for tracking the electronic consultation of the second computer support cooperative working module; a registration and authentication module for use Registration, maintenance of the registrant database, generation and management of security keys; and a coordination module for maintaining the consistency of registration and authentication modules and operation 8 200844849. Exchange of information between all participants. The implementation of the invention can at least achieve the following functions: 1. Video and remote mouse pointer (Tele-pointer) synchronous discussion function. In addition to the traditional video talk function, the present invention integrates the remote mouse pointer synchronization function to make far Both the end and the local end can simultaneously see the mouse pointers at both ends, which can be used to assist in describing a specific area of the medical image, thereby avoiding the cognitive error between the doctors when describing the image orally. Second, medical image transmission and processing functions. The invention integrates the same step transmission and processing function of the medical image. When a doctor participating in the consultation accesses a specific image, the system can simultaneously transmit the image to other doctors participating in the consultation, so that all doctors can observe the same The image can avoid the difficulty of image description and transmission in traditional consultation. Third, support the medical digital image and communication standard DICOM3.0, which can be connected with the medical image storage and transmission system (PACS) in the hospital. Fourth, flexible sharing of human-machine interface functions. This feature allows participants to arrange the location of all functional components according to J's own habits, including video windows, drawing functions, and conversation status windows. This function enables the doctors who participate in the consultation to use comfortably and conveniently. This system. 5. System data transmission prioritization function. By disassembling and prioritizing control messages, different priorities and communication protocols are assigned according to the importance and characteristics of their data, so that they can be used in any network bandwidth. The best performance can be achieved. [Embodiment] 9 200844849 _ As shown in Figure 1, it is a multi-point collaborative telemedicine consultation system 30 embodiment of the present invention. The medical consultation system 30 is designed as a master-slave computer system for use in a broadband network environment, and provides a multi-user 41 service on the server 42 platform of the Microsoft Windows operating system. The system comprises: a client consultation system 10 and a server consultation system 20. The client consultation system 10 has: a first medical image analysis and The first data security and verification module 12 and f, a first computer support cooperative working module 13. The server end consultation system 20 has: a second medical image analysis and processing module 2 a second data privacy and verification module 22; a second computer support cooperative working module 23; a meeting recording module 24; a registration and authentication module 25 and a coordination module 26. It is worth noting that different The transmission of network data between locations will ensure the confidentiality and privacy of data transmission through the confidentiality and verification services of the data. As shown in Figure 2, it is a multi-point collaborative telemedicine meeting of the present invention. The system, its role and user priority and authority are compared with the embodiment diagram. In the multi-point collaborative telemedicine consultation system of the embodiment, four types of users are defined; the role includes: system administrator, conference initiator, general Users and audiences. Different roles have different privileges, operation rights, and priority rights. System administrators have system management rights, such as · account creation and deletion, meeting The highest priority of management, and the authority of all operations. The conference initiator has conference management rights, such as inviting users, kicking off problem users, changing the roles of general users and viewers, giving them the second priority and all Permissions for operation. The average user has the third-order 200844849/priority and all operations, but does not have the authority to manage meetings and systems. The viewer has the lowest priority and does not have any permission to operate the image, which must be maintained during the consultation. Silent, and it is not allowed to transmit remote mouse pointers or voice/video packets. According to the above, the system can avoid problem users from disrupting or interfering with the consultation. Such a design is used for tele-teaching with multi-point telemedicine systems. It is important that when the server 42 receives the image analysis and processing command from the user terminal 41, the first medical image analysis and processing module 11 and the second medical image p analysis and processing module 21 are used for The received image is analyzed and processed. In addition, when the meeting starts, the system organizes the command receiving time, the command initiator, the command code, and the parameters associated with the command into an event record and stores it in the event log file. At the same time as the consultation, the medical image file and its related commands, such as the medical image retrieval command, will also be stored in the record file. Due to the record of the incident, the process of consultation activities can be reviewed and reviewed, so that the purpose of the education and training consultation case can be achieved. Q The first data privacy and verification module 12 and the second data privacy and verification module 22 are used to protect and verify the received data. Data security is also a very important issue in the distance consultation system because the patient information is very private. For consultation, medical imaging patients' poor materials, patient records and diagnostic reports must be transmitted over the Internet; however, such information can be easily viewed and changed. In order to protect these personal privacy and maintain the confidentiality and integrity of the data, the data privacy and verification module must be integrated into the teleconsultation system. In the system of the embodiment, the international data encryption algorithm (International Data Encryption Algorithm, 200844849 IDEA) is used to encrypt the image, and for the authentication and security of the client 41, the asymmetric is used. RSA with high complexity coding. The father's first computer support cooperative working module 13 and the second clock 4k ^ jb 4^: cooperative working module 23 for remote collaborative work and synchronization of the first computer support cooperative working module 13, Contains a first energy. The conference module 131 and a first shared work area 132. The second Zeng kou I talented woman 义 Ο Ο cooperating work module 23 includes a second video/audio conference module and a second sharing work area 232. When a doctor or radiologist is in a distanced discussion with other specialties and lines, these interview tools use the gap between the two. In addition, this module also provides the synchronization functions required by the user to work together to support the work of the distance and the workspace. The first video/audio conference module 131 and the second video/audio conference< "Group 23 application application micro-teaching communication application interface (MiCr〇s〇ft TeJ ^ Yang
Application Programming Interface，TAPI) 3.0 版的技術町 訊應用程式介面3.0版包括了一组元株4 ; 通 J 、 1干物件模式 (Component Object Model，COM)，其可以被輕易地敕人工 任何的應用程式。它支援工業認可之H.323視訊會^ =於 及IP多重播送(Multicasting)會議。為了能達成多點會^準 網路上必須有至少一組的伺服器42啟動微軟公司的網際 網路定位服務(ILS，Internet Locator Service)。網際網路定 位服務用以管理會議物件以及被使用於在網路上的公開 IP(Internet Protocol)多重播送會議。通訊應用程式介面程式 在加入多重播送群組及進行群組通訊之前，必須連接到網 際網路定位服務伺服器42。 本實施例之架構，網際網路定位服務係運作於一伺服 200844849 • 器端42。用戶端41應用程式連接到伺服器42，詢問現存 的會議以決定是否加入。經過核准的使用者，可以透過通 . 訊應用程式介面的集結控制，增加、刪除與列舉出儲存在 . 肖際網路定位服務錬器⑽多重播送會議。因為本系统 採用ip多錢送傳送模式，使用者只需要傳送—組他們的 f訊副本到-個群組IP位置以連結所有的接收者，進而可 以減少資料的重複傳送、降低頻寬的需求，以及當參與者 人數增加時，達到比例調整的目的。 Γ 帛-分享工作區132及第二分享工作區232，提供— 遠端的討論環境。為了保持環境的一致，『你見即我見』 (what you see is what !謂_)的功效必須被丄 成。这理有兩種你見即我見模$ :嚴謹的你見 鬆散的你見即我見。使用嚴謹的你見即我見模型時 的茶加者可以看見完全相同螢幕，因而存在著—些 例如：顯示設備，顯示解決方案、操作方法..等 這些理由，在本實施例，採用鬆散的你見即我見模型^ >可=保持相同的資料視窗，而不是保持完全相同 顯 不畫面°因此用戶可以安排適合他們的視窗佈局，例^ 工具列、移動/縮放視窗、以及調整他們的解 =的你料我見模型，將更$活並且適合於^者口Application Programming Interface (TAPI) Version 3.0 of the Technology News Application Interface Version 3.0 includes a set of meta-strains 4; through J, 1 Dry Object Model (COM), which can be easily applied to any application. Program. It supports industry-recognized H.323 video conferencing ^ = and IP multicasting conferences. In order to achieve multiple points, at least one set of servers 42 must be enabled on the network to start Microsoft's Internet Locator Service (ILS). The Internet Location Service is used to manage meeting objects and to be used for public IP (Internet Protocol) multicast conferences on the Internet. The Communication Application Interface Program must be connected to the Internet Location Service Server 42 before joining the Multicast Group and group communication. In the architecture of this embodiment, the Internet location service operates on a server 200844849. The client 41 application connects to the server 42 and queries the existing conference to decide whether to join. Approved users can add, delete, and enumerate the multiple-cast conferences stored in the Inter-Network Location Service (10) through the aggregation control of the application interface. Because the system adopts the ip multi-money transmission mode, the user only needs to transmit a group of their c-copy to the group IP location to connect all the receivers, thereby reducing the repeated transmission of data and reducing the bandwidth requirement. And the purpose of proportional adjustment when the number of participants increases. Γ 帛 - Sharing Work Area 132 and Second Sharing Work Area 232, providing a remote discussion environment. In order to maintain the consistency of the environment, the effect of "what you see is what!" must be achieved. There are two kinds of things you see, I see you. $: Strict you see. Loose you see me. Using the rigorous you see the tea adder when I see the model can see the exact same screen, so there are some reasons such as: display device, display solution, operation method, etc., in this embodiment, using loose You see that I see the model ^ > can = keep the same data window, instead of keeping the same display screen. So users can arrange the window layout that suits them, such as the toolbar, move/zoom windows, and adjust them. Solution = you expect me to see the model, it will be more live and suitable for the mouth of the mouth
如圖三A ^圖三B、圖三C及圖三：〇所示， ^明之—種多點協同遠距醫療會診系統，其資料偉、1 巧關系統定義格式、微軟視窗控制格式：檔案+春= ;、及圖工具格式之實施湘。线定義格•用以^ 200844849 . 系統溝通命令，例如視訊會議命令。微軟視窗控制格式被 設計用於攜帶微軟視窗訊息，例如：游標移動、按鈕點擊、 以及影像處理的選單項目…等等。檔案傳輸及繪圖工具格 式被分別用於傳送檔案及遞送物件影像處理命令。基於這 樣格式的定義，系統藉由短碼指令來維持不同的參加者間 一致的資料顯示與控制處理，而不是傳送整個應用程式視 窗的影像。因此可以降低會診時的網路流量，頻寬的要求 得以顧著地降低。 f' 伺服器端會診系統20，係藉由寬頻網路與用戶端會診 系統10連接，其具有：一第二醫療影像分析及處理模組 21 ; —第二資料保密及驗證模組22 ; —第二計算機支援合 作工作模組23 ; —會議記錄模組24 ; —註冊及認證模組 25以及一協調模組26。其中第二醫療影像分析及處理模組 21 ;第二資料保密及驗證模組22以及第二計算機支援合作 工作模組23，如先前所描述，因此不再贅述。 如圖四所示，係為本發明之一種多點協同遠距醫療會 G 診系統，其命令發送之實施例流程圖。為了避免資料處理 流程發生混亂，系統參與者之間所下達的命令必須同步 化。命令發送機構的想法是建構在命令沒有在使用者下達 後而直接地被執行，而是藉由伺服器42的協調，其係使用 一個等待答覆仵列（Queue)46，以監控每一個命令的實行。 命令發送演算法的流程，係如圖四所示。 發送命令（1):當一個用戶啟動命令時，命令將不在用 戶端41的計算機裡立即被執行，而是將被傳送到伺服器 42 〇 14 200844849 . 佇列檢查(2):當伺服器42收到命令時，它檢查等待 答覆佇列46以觀看它是否是空的。 送出命令(3):如果佇列46是空的，伺服器42傳送命 令給全部用戶端41參加者，並且針對每一個參加者放一個 等待答覆記錄在佇列46内。 通知伺服器忙碌（4):如果佇列46不是空的，伺服器 42忽略命令，並且通知發送者，伺服器42正在等待先前 的命令完成。 (% 回覆命令完成（5):當一用戶端41從伺服器42那裡收 到命令，將啟動它自己的區域處理模組去執行命令。在那 些命令被完成之後，用戶端41會藉由傳送一個命令完成訊 息以通知伺服器42。當伺服器42接收到來自於用戶端41 的命令完成訊息時，與用戶端41關聯的等待答覆記錄將從 符列46中移除。 如果伺服器42在一時間間隔内沒有接收到來自於用 戶端41的命令完成訊息，它將自動地從佇列46中移除該 ij 記錄，並且藉由處理下列的步驟，嘗試恢復全部參加者的 一致性： (一） 檢查與用戶端41之間的網路連接； (二） 如果連接良好，它將送一個信號以結束用戶端41的命 令，並傳送新的影像結果到用戶端，以替換目前的影 像。 如圖五所示，係為本發明之一種多點協同遠距醫療會 診系統，其IDEA加解密之時間數值實施例圖。如圖六所 示，係為本發明之一種多點協同遠距醫療會診系統，其數 200844849 . 位簽章及認證之時間數值實施例圖。如圖七所示，係為本 發明之一種多點協同遠距醫療會診系統，其idea加解密 之時間及傳送延遲百分比之實施例圖。會議記錄模組24， 用以追蹤第二計算機支援合作工作模組23所進行電子化 會診之事件。當伺服器42建立會診時，系統會使用IDEA 的演算法隨機產生一把會議密鑰，用以加密欲傳送如影像 等的會診資料。當使用者試著登入伺服器42時，他/她必 須透過密碼驗證。如果驗證成功地完成，接著開始密鑰的 f 交換程序，為了保全的理由，系統利用RSA加解密、數位 簽章及驗證技術進行用戶驗證程序及密鑰交換。 註冊及認證模組25，用以負責使用者之註冊、維護註 冊者資料庫、產生及管理安全金鑰，其中包含有一個憑證 管理中心（Certification Authority，CA)。在伺服器42開始起 動時，憑證管理中心將產生RSA公鑰和私鑰提供給伺服器 42。在使用系統前，每一用戶必須藉由註冊他/她的相關資 訊及選擇一登入識別碼及密碼以登入該系統。如果註冊程 G 序成功，憑證管理中心將產生公錄和私錄提供給使用者。 又使用者資訊包括使用者的公鑰將被附加在使用者資訊資 料庫内。最後，使用者將獲得一個金鑰磁片，這金鑰磁片 儲存有一對使用者及伺服器42被儲存的公鑰。為保護這把 私鑰，一組私鑰的密碼是必要的以取回儲存在這個磁片上 的這把公錄。 協調模組26，用以維護會議的一致性，並處理所有參 與者間之資料交換。在此系統裡，伺服器42為網路拓撲的 中心，協調所有系統訊息的傳輸。會議命令訊息用於會議 16 200844849 . 控制，例如：登入、登出、離開…等等。這些會議命令訊 息並非被用於在用戶端41所下達或是操作的命令，而是為 了通知伺服器42關於參加者在系統内的狀態。因此，當伺 服器42得到這些消息時，也會通知用戶端41調整他們現 有的會議狀態，例如：使用者的加入或離開。另一方面， 所有其他消息(視窗、檔案傳輸及繪圖工具訊息）是用來遞 送使用者的操作至所有用戶端4卜當這些訊息被伺服器42 接受，他們將被轉送至參加相同會議的全部其他使用者， Ο 以在用戶端41上展開相關的操作。 當密碼機制在系統内提供安全能力時，其不應該影響 系統性能太多。基於這樣的考量，本實施例在Intel奔騰 III，450MHz的中央處理器上，測量密碼使用時，其在時 間上的消耗。IDEA加解密試驗的結果被顯示在圖五，數位 簽章及驗證試驗的結果被顯不於圖六。相關數據顯不5耗 費的時間係取決於在IDEA及SHA-1在簽章和驗證上的檔 案大小。圖七顯示IDEA加解密時間超過傳輸時間的比例。 〇 可以發現加解密的影響是非常有限，且當流量少於1Mbps 時是少於百分之6。 本發明之一種多點協同遠距醫療會診系統實施例，其 t 遠距滑鼠指標在不同的流量下之效能，係如圖八A所示之 平均傳輸延遲實施例圖。如圖八B所示之傳輸延遲標準差 實施例圖。如圖八C所示之封包遺失率實施例圖。在本實 施之多點協同遠距醫療會診系統中，遠端滑鼠指標也是一 種溝通的重要補助工具。在遠端滑鼠指標與語音的支援 下，使用者可以指出醫療影像中有興趣的區域給其他使用 200844849 t。我們可以藉由在不同的流量下，游標移動訊息之延遲 時間與 +封包遺失率，許估遠距滑鼠指標效能。 藉由5又定路由器45模擬不同的網路流量，以呼估在 不同頻寬下的效能。在每一個不同的流量設定下，取樣並 硯祭麵舞純息，其傳輸延遲的平均 封 失率分別顯示於圖八B及圖八c。在其它觀察中 大於〗60 Kbps時’封包遺失比率被降低到〇，如圖八c。 Γ Ο M = W所示，係為本發明之—種多點協_距醫療 二=只其猎由傳送運算命令訊息之資料流分布實施例 ^圖九B所示’係為本發明之一種多點協同遠距醫療會 ΓΓ二藉由傳送運算結果訊息之資料流分布實施例 麵'b.t 的效應’因此將系統測試於實驗室 1 S的太乙網路子網路，其實驗進行在⑹ 合冷“時：:二端42之進行資料傳輸的流量量測。當 二三種影像，其大小分別是5_、 視勃同時進行多種的影像分析運作，例如： 量分別在用/r衫像分割及平滑化處理，其資料傳輸的流 透過短碼訊息來進行同步處理。 命令碼訊息控制，以進行 服器…間量測在用戶端… 診系':圖::用示’：2發明之一種多點協同遠距醫療會 ”使用一個519Kbytes的圖像之傳輸延遲實施例 200844849 . 圖。當會議進行中，為了更仔細地判讀影像並討論病徵， 影像處理的操作會是經常性地被執行。因此，這些操作不 能引起顯著的操作延遲。為維護可接受的互動式操作，系 統對使用者的反應時間應該是短暫的。圖十顯示一個519 Kbytes的圖像之傳輸延遲，在不同可能的流量從64 Kbps、 160 Kbps到1024 Kbps，其中傳輸延遲分別從84秒、30秒 到3秒。 本實施例實驗之網路拓撲實施例圖，係如圖十一 A所 Ο 示，係為一國家寬頻實驗網路51(National BiOadband Experimental Network，NBEN)，其具有 IP 多重播放之能 力。又如圖十一 B所示，其係為一校園非同步傳輸模式 (Asynchronous Transfer Mode，ATM)網路 52,其使用通道技 術（Tunneling)處理器43以傳送IP多重播放封包。又如圖 十一 c所示，其係為一整體服務數位網路53(丨ntegrated Services Digital Network，ISDN)’其結合醫學影像儲存與傳 輸系統44之運作，又藉由反向多工器、句㈣⑽ CJ Multiplexer，IMUX)及路由器45，以連接成大醫院及行政院 衛生署彰湖醫院。 - 本實施例已經被測試於圖十一 A、圖十一 b及圖十一 • c三種網路拓撲平台。圖十一 A顯示一種在台灣新建造的 寬頻網路實驗網路拓撲平台’稱為國家寬頻實驗網路，它 疋被建造用以支援台冷的科學及科技通訊，主要用以連接 台灣主要的大學、研究機構及組織。圖十一 B所示，係為 一種校園ATM 0C-3的貫驗網路拓撲，其是一種不呈ip多 重播放能力之網路，在此一實驗中，通道技術被使用在終 19 200844849 端與網際網路間，用以在不同的網路間傳送ip多重播放的 封包。 如圖十二所示，其係為本發明之一種多點協同遠距醫 療會診系統，其在一個國家實驗網路管理系統進行資料傳 送之測試結果實施例圖。其中顯示了三種資料：乳房X光 片攝影（4098 Kbytes)、斷層掃瞄/磁振造影（512 Kbytes)、以 及系統訊息（112 bytes)，其平均延遲及抖動（Jitter)的測試結 果。 如圖十三所示，其係為本發明之一種多點協同遠距醫 療會診系統，其在多重播放路由器與通道技術上效能比較 結果實施例圖。 惟上述各實施例係用以說明本發明之特點，其目的在 使熟習該技術者能瞭解本發明之内容並據以實施，而非限 定本發明之專利範圍，故凡其他未脫離本發明所揭示之精 神而完成之等效修飾或修改，仍應包含在以下所述之申請 專利範圍中。 【圖式簡單說明】 圖一係為本發明之一種多點協同遠距醫療會診系統系統實 施例圖。 圖二係為本發明之一種多點協同遠距醫療會診系統，其角 色與使用者優先權及權限對照實施例圖。 圖三A係為本發明之一種多點協同遠距醫療會診系統，其 資料傳送格式中有關系統定義格式之實施例圖。 圖三B係為本發明之一種多點協同遠距醫療會診系統，其 20 200844849 貧料傳送格式中有關微軟視窗格式之實施例圖。 c係為本發明之—種多點協同遠距醫療會診系統，其 貧料傳送格式巾有隨案傳輸格式之實施例圖。 圖j係為本發明之一種多點協同遠距醫療會診系統，其 貝枓傳送格式中有關繪圖工具格式之實施例圖。 ^係為本發明之—種多點協同遠距醫療會料統，其命 令發达之實施例流程圖。 〇 Ο 之—種多點協同遠距醫療會診系統，其 IDEA，加知岔之時間數值實施例圖。 二欠！明之一種多點協同遠距醫療會診系統，其數 "又早及涊證之時間數值實施例圖。 圖七係為本發明之一種吝 —密之時間二統’其 之一種多點協同遠距醫療會診系統，其 ϊ。*在不同的流量下效能之平均傳輸延遲時間實施例 圖八Β係為本發明一夕力 遠距游標在不同的流旦下^1 協同遠距醫療會診系統，其 圖。 /;,L里下效旎之傳輸延遲標準差實施例 遠距游標同遠距醫療會診系統，其 圖九A係騎發日^1.=封巧失率實施例圖。 藉由傳送運曾么人— 協同遠距醫療會診系統，其 圖九B係為本月二分布實施例圖。 藉由傳送運曾处世，ώ夕2協同适距醫療會診系統，其 〜果訊息之資料傳送流分布實施例圖。 21 200844849 .圖十係為本發明之一種多點協同遠距醫療會診系統，其使 用一個519 Kbytes的圖像之傳輸延遲實施例圖。 圖十一 A係為一國家寬頻實驗網路網路之拓撲實施例圖。 圖十一 B係為一校園ATM網路拓撲實施例圖。 圖十一 C係為一 ISDN網路拓撲實施例圖。 圖十二係為本發明之一種多點協同遠距醫療會診系統，其 在一個國家寬頻實驗網路進行資料傳送之測試結果實施例 圖。 〇 圖十三係為本發明之一種多點協同遠距醫療會診系統，其 在多重播放路由器與通道技術上效能比較結果實施例圖。 【主要元件符號說明】 30 多點協同遠距醫療會診系統 10 用戶端會診系統 11 第一醫療影像分析及處理模組 12 第一資料保密及驗證模組 13 第一計算機支援合作工作模組 Ο 131第一視訊/音訊會議模組 132 第一分享工作區 . 20 伺服器端會診系統 21 第二醫療影像分析及處理相:組 ' 22 第二資料保密及驗證模組 23 第二計算機支援合作工作模組 231 第二視訊/音訊會議模組 231第二分享工作區 24 會議記錄模組 25 註冊及認證模組 22 200844849 β 26 協調模組 41 用戶端 42 伺服器端 43 通道技術處理器 44 反向多工器 45 路由器 46 佇列 51 國家寬頻實驗網路 52 校園非同步傳輸模式網路 (' 53 整體服務數位網路As shown in Figure 3A, Figure 3B, Figure 3C and Figure 3: 〇, the multi-point coordinated telemedicine consultation system, its data, 1 system-defined format, Microsoft Windows control format: file +Spring = ;, and the implementation of the map tool format. Line definition grid • used ^ 200844849 . System communication commands, such as video conferencing commands. The Microsoft Windows Control Format is designed to carry Microsoft Windows messages such as cursor movements, button clicks, and image processing menu items... and more. The file transfer and drawing tool formats are used to transfer files and deliver object image processing commands, respectively. Based on the definition of such a format, the system maintains consistent data display and control processing between different participants by short code instructions instead of transmitting images of the entire application window. As a result, network traffic at the time of the consultation can be reduced, and the bandwidth requirements can be reduced. The server-side consultation system 20 is connected to the client consultation system 10 by a broadband network, and has: a second medical image analysis and processing module 21; a second data privacy and verification module 22; The second computer supports the cooperative working module 23; the meeting recording module 24; the registration and authentication module 25 and a coordination module 26. The second medical image analysis and processing module 21; the second data security and verification module 22 and the second computer support cooperation module 23 are as described above, and therefore will not be described again. As shown in FIG. 4, it is a flow chart of an embodiment of a multi-point coordinated telemedicine medical consultation system. In order to avoid confusion in the data processing process, commands issued between system participants must be synchronized. The idea of the command sending mechanism is that the command is executed directly after the command is not issued by the user, but by the coordination of the server 42, which uses a wait queue Queue 46 to monitor each command. Implemented. The flow of the command to send the algorithm is shown in Figure 4. Send command (1): When a user initiates a command, the command will not be executed immediately in the computer of the client 41, but will be transmitted to the server 42 〇14 200844849. 检查 column check (2): when the server 42 When the command is received, it checks the wait response queue 46 to see if it is empty. Send command (3): If queue 46 is empty, server 42 transmits a command to all client 41 participants, and a wait response record is placed in queue 46 for each participant. The notification server is busy (4): If the queue 46 is not empty, the server 42 ignores the command and notifies the sender that the server 42 is waiting for the previous command to complete. (% reply command completion (5): When a client 41 receives a command from the server 42, it will start its own area processing module to execute the command. After those commands are completed, the client 41 will transmit A command completion message informs the server 42. When the server 42 receives the command completion message from the client 41, the wait reply record associated with the client 41 will be removed from the queue 46. If the server 42 is If a command completion message from the client 41 is not received within a time interval, it will automatically remove the ij record from the queue 46 and attempt to restore the consistency of all participants by processing the following steps: a) Check the network connection with the client 41; (2) If the connection is good, it will send a signal to end the command of the client 41 and transmit a new image result to the client to replace the current image. As shown in FIG. 5, it is a multi-point coordinated telemedicine consultation system of the present invention, and the time-value numerical example diagram of IDA encryption and decryption is shown in FIG. The same distance telemedicine consultation system, the number of 200844849. Signature and certification time numerical example diagram. As shown in Figure 7, is a multi-point collaborative telemedicine consultation system of the present invention, its idea encryption and decryption time And an example of the transmission delay percentage. The conference recording module 24 is used to track the electronic consultation of the second computer support cooperative working module 23. When the server 42 establishes a consultation, the system uses the IDEA algorithm. A conference key is randomly generated to encrypt the consultation material to be transmitted, such as an image. When the user tries to log in to the server 42, he/she must authenticate by password. If the verification is successfully completed, then the key is started. f Exchange program, for security reasons, the system uses RSA encryption, decryption, digital signature and verification technology for user authentication procedures and key exchange. Registration and authentication module 25, responsible for user registration, maintenance of the registrant database Generate and manage a security key that contains a Certificate Authority (CA). When the server 42 starts up The voucher management center will generate the RSA public key and the private key to be provided to the server 42. Before using the system, each user must log in to the system by registering his/her related information and selecting a login ID and password. The registration process is successful, and the voucher management center will provide the public and private records to the user. The user information including the user's public key will be attached to the user information database. Finally, the user will receive a gold. The key disk, which stores a pair of public keys stored by the user and the server 42. To protect the private key, a set of private key passwords is necessary to retrieve the data stored on the disk. The harmonization module 26 is used to maintain the consistency of the meeting and to handle the exchange of information between all participants. In this system, server 42 is the center of the network topology and coordinates the transmission of all system messages. Conference command message for conferences 16 200844849 . Controls, for example: login, logout, leave... and more. These conference command messages are not used for commands placed or operated at the client 41, but for the notification server 42 regarding the status of the participants in the system. Therefore, when the server 42 gets these messages, the client 41 is also notified to adjust their existing conference status, for example, the user's joining or leaving. On the other hand, all other messages (window, file transfer and drawing tool messages) are used to deliver the user's actions to all clients 4. When these messages are accepted by server 42, they will be forwarded to all of the same meeting. Other users, Ο to expand related operations on the client 41. When the cryptographic mechanism provides security capabilities within the system, it should not affect system performance too much. Based on such considerations, the present embodiment measures the time consumption of the password on the Intel Pentium III, 450 MHz central processing unit. The results of the IDEA encryption and decryption test are shown in Figure 5. The results of the digital signature and verification tests are not shown in Figure 6. The time it takes for the relevant data to appear is dependent on the file size of the IDA and SHA-1 on the signature and verification. Figure 7 shows the ratio of IDEA encryption and decryption time over the transmission time. 〇 It can be found that the impact of encryption and decryption is very limited, and is less than 6 percent when the traffic is less than 1 Mbps. An embodiment of the multi-point coordinated telemedicine consultation system of the present invention, the performance of the t-remote mouse pointer under different flow rates is an example of an average transmission delay embodiment as shown in FIG. The transmission delay standard deviation shown in Figure 8B is an embodiment diagram. FIG. 8C shows a packet loss rate embodiment diagram. In this implementation of the multi-point collaborative telemedicine consultation system, the remote mouse pointer is also an important means of communication for communication. With the support of the remote mouse pointer and voice, the user can point out areas of interest in the medical image for other uses 200844849 t. We can estimate the performance of the remote mouse pointer by using the delay time of the cursor movement message and the loss rate of the packet under different traffic. The router 45 is used to simulate different network traffic to estimate the performance at different bandwidths. At each of the different flow settings, the sample and the sacred face dance are pure, and the average loss rate of the transmission delay is shown in Figure 8B and Figure 8c, respectively. In other observations, when the ratio is greater than 〖60 Kbps, the packet loss ratio is reduced to 〇, as shown in Fig. 8c. Γ Ο M = W is a kind of multi-point coordination _ distance medical two = only the data flow distribution example of the transmission operation command message is shown in Fig. 9B is a kind of the invention The multi-point collaborative telemedicine clinic will perform the "bt effect" by transmitting the data flow of the operation result message. Therefore, the system is tested in the laboratory 1 S Taiyi network subnetwork, and the experiment is carried out in (6) Cold "Time:: The measurement of the data transmission of the data transmission at the two ends 42. When two or three images are respectively 5_, the image is operated simultaneously, for example: the amount is divided by the /r shirt image And smoothing processing, the data transmission stream is synchronized by the short code message. The command code message is controlled to perform the measurement between the server and the user... Diagnostics ': Picture:: Use ': 2 invention A multi-point coordinated telemedicine session" uses a 519 Kbytes image transmission delay embodiment 200844849. As the meeting progresses, in order to interpret the images and discuss the symptoms more carefully, the image processing operations are performed frequently. Therefore, these operations do not cause significant operational delays. To maintain acceptable interactive operations, the system's response time to the user should be short-lived. Figure 10 shows the transmission delay of a 519 Kbytes image with different possible traffic from 64 Kbps to 160 Kbps to 1024 Kbps with a transmission delay of 84 seconds, 30 seconds to 3 seconds, respectively. The network topology embodiment of the experiment in this embodiment is shown in Figure 11A. It is a National BiOadband Experimental Network (NBEN) with IP multi-play capability. As shown in FIG. 11B, it is a Campus Asynchronous Transfer Mode (ATM) network 52, which uses a tunneling processor 43 to transmit IP multi-play packets. As shown in FIG. 11c, it is an integrated service digital network (ISDN) that combines the operation of the medical image storage and transmission system 44 with a reverse multiplexer. Sentences (4) (10) CJ Multiplexer, IMUX) and Router 45, to connect to the large hospital and the Executive Hospital Health Department Zhanghu Hospital. - This embodiment has been tested in Figure 11A, Figure 11b, and Figure 11 c. Figure XIA shows a newly built broadband network experimental network topology platform in Taiwan called the National Broadband Experimental Network, which was built to support Taiwan's scientific and technological communications, mainly to connect Taiwan's main Universities, research institutions and organizations. Figure XIB shows a campus ATM 0C-3 network architecture, which is a network that does not have ip multi-play capability. In this experiment, channel technology is used at the end of 2008 200844849. A packet used to transmit ip multiplay between different networks and the Internet. As shown in Fig. 12, it is a multi-point collaborative telemedicine consultation system of the present invention, which is an example of test results of data transmission in a national experimental network management system. It shows three types of data: mammogram (4098 Kbytes), tomography/magnetography (512 Kbytes), and system information (112 bytes), with average delay and jitter (Jitter) test results. As shown in Fig. 13, it is a multi-point cooperative telemedicine consultation system of the present invention, which compares the performance of the multi-player router and channel technology. The embodiments are described to illustrate the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the present invention and to implement the present invention without limiting the scope of the present invention. Equivalent modifications or modifications made by the spirit of the disclosure should still be included in the scope of the claims described below. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing an embodiment of a multi-point coordinated telemedicine consultation system according to the present invention. Figure 2 is a multi-point collaborative telemedicine consultation system of the present invention, with a comparison of the roles and user priorities and permissions. Figure 3A is a diagram of an embodiment of a system-defined format in a data transfer format of a multi-point collaborative telemedicine consultation system of the present invention. FIG. 3B is a multi-point coordinated telemedicine consultation system of the present invention, and 20th embodiment diagram of the Microsoft Windows format in the 200844849 poor material delivery format. c is a multi-point coordinated telemedicine consultation system of the present invention, and the poor material delivery format towel has an embodiment diagram of the transmission format of the case. Figure j is a diagram of an embodiment of a drawing tool format in a multi-point coordinated telemedicine consultation system of the present invention. ^ is a flow chart of an embodiment of a multi-point coordinated telemedicine medical system of the present invention. 〇 Ο - A multi-point collaborative telemedicine consultation system, IDEA, and a numerical example of the time of the knowledge. Second owe! Ming's multi-point coordinated telemedicine consultation system, the number of "time and time and value of the evidence. Figure 7 is a multi-point coordinated telemedicine consultation system of the present invention, which is a kind of multi-point collaborative telemedicine consultation system. *The average transmission delay time of the performance under different traffic flows. Figure VIII is the invention of the long-distance vernier in the different distances of the ^1 coordinated telemedicine consultation system, its figure. /;, L delay effect standard deviation transmission standard deviation example Long distance cursor with telemedicine consultation system, Figure 9A is the riding date ^1. By transmitting the former person-cooperative telemedicine consultation system, Figure IXB is a distribution example diagram for this month. By transmitting and transporting the company, the Xixi 2 coordinated medical consultation system, the data transmission flow distribution example map of the message. 21 200844849. Fig. 10 is a multi-point coordinated telemedicine consultation system of the present invention, which uses a transmission delay diagram of an image of 519 Kbytes. Figure 11A is a topological example of a national broadband experimental network network. Figure 11 B is a diagram of a campus ATM network topology. Figure 11 C is an example of an ISDN network topology. Figure 12 is a diagram showing an example of test results of a multi-point coordinated telemedicine consultation system for data transmission in a national broadband frequency experimental network. 〇 Figure 13 is a multi-point collaborative telemedicine consultation system of the present invention, which compares the performance results of the multi-player router and channel technology. [Main component symbol description] 30 multi-point collaborative telemedicine consultation system 10 User consultation system 11 First medical image analysis and processing module 12 First data security and verification module 13 First computer support cooperative working module Ο 131 First video/audio conference module 132 first shared work area. 20 server-side consultation system 21 second medical image analysis and processing phase: group '22 second data security and verification module 23 second computer support cooperation mode Group 231 Second Video/Audio Conference Module 231 Second Sharing Work Area 24 Conference Recording Module 25 Registration and Authentication Module 22 200844849 β 26 Coordination Module 41 Client 42 Server End 43 Channel Technology Processor 44 Reverse Multiple Tool 45 Router 46 51 51 National Broadband Experimental Network 52 Campus Asynchronous Transfer Mode Network (' 53 Overall Service Digital Network
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