4444 61 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（） 5-1發明領域： 本發明係關於一種虛擬網路系統與方法，特別是指在 '一機多用戶架構下’不需增加硬體成本即可進行網路通訊 功能的虛擬網路系統與方法。 5-2發明背景： 隨著資訊科技的發達，電腦的運算能力也日益增強， 於是昔日僅能透過終端機與超級電腦溝通的方式，亦逐漸 被各式各樣的網路所取代。然而即使是在個人電腦已廣為 使用的時代裏，一台電腦在同一時間中皆只能讓—個使用 者使用’因此即使在電子科技發展極度快速的今天，上述 的使用情況對電腦資源而言仍屬浪費，而且無法發揮現今 電細的最佳效邊，於是‘習知技術中，便在個人電腦中發 展出一機多用戶的架構。 請參閱第一圖’其描繪習知技術中，在Windows 95/98之平台下架構出一機多平台架構之方塊結構圓，其 係在一電細主機102架構一多用戶配接卡1〇4來達成目 的。所有的終端用戶可經由一纜線1 06以連接多用戶配 接卡1 04與終端控制器1 08，而終端用戶所需的顯示器 1 1 〇、鍵盤1 1 2、以及滑鼠1 1 4等使用者介面則再與終端 控制器相連。應注意的是’每個終端用戶皆可透過 上述之架構來構築，因此不再賢述。再者，上述之多用戶 酉己接卡104可運用PCI介面，以插入在電腦主機1〇2的 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) I-1 ----訂--------線 Α7 Β7 44446ί 五、發明說明（） (請先閱讀背面之注意事項再填寫本頁) P C丨插槽中；而顯示器1 1 0、鍵盤1 1 2、以及滑鼠1 1 4貝〗J 可利用L P 丁、C Ο Μ、甚至U S B埠來進行連結。明顯的， -上述架構下執行工作的每個終端用戶，皆可共享電腦主機 1 0 2中，諸如硬碟、C P U、或印表機等資源，而且每個終 端用戶在使用時如同獨自用有該電腦主機1 〇 2般，而不 會感覺其他的存在，更不會受到其他用戶的干擾，於是達 成分旱電腦主機102資源的目的。 然而在上述的資源分享架構下，各終端用戶間卻無法 連接成網路；易言之，上述架構下的終端用戶間並不具網 路通訊的功能，於是各用戶間便無法進行資料的溝通。更 甚者，由於目前的電腦主機102不能區分由網路（不論是 網際網路或區域網路）所傳來的訊息係傳給哪一個用戶， 因此上述用戶亦不能分享網路資源，亦即在習知的一機多 用戶架構中，用戶無法使用網路方面之任何應用。所以亟 需一種具有能克服上述問題的虛擬網路，能在不增加硬體 成本之下除去上述習知技術所面臨的難題。 5-3發明目的及概述： 經濟部智慧財產局員工消費合作社印製 鑒於上述之發明背景中，習知的一機多用戶架構中， 終端用戶無法使用網路方面之任何應用，本發明即針對上 述之缺點提出一種不需任何增加硬體成本，即可進行構築 網路的系統與方法。 本紙張尺度適用中國國家標準（CNS)A4規格（2i0 X 297公芨） 444461 A7 _B7_ 五、發明說明（） (請先閱讀背面之注意事項再填寫本頁) 根據以上所述之目的，本發明所提供的虛擬網路系統 與方法，係在一機多用戶架構中，利用軟體模擬的方式架 -構出虛擬網路通訊協定層 '虛擬網路卡、虛擬網路卡驅動 程式 '以及虛擬網路線，用以構築出一虛擬網路，當發送 端的網路應用軟體欲發送訊息時，將經由虛擬網路通訊協 定層將訊息分解成封包後，經由虛擬網路驅動程式傳送至 虛擬網路卡，隨後再置放入發送端缓衝區中，並等候虛擬 網路線送達接收端。接下來，虛擬網路線將通知接收端需 接收訊息封包，隨後虛擬網路線將訊息封包移往接收端緩 衝區中，再透過虛擬網路卡接收該封包，並經由虛擬網路 卡驅動程式，送往虚擬網路通訊協定層以進行解封包以獲 得訊息内容，最後再將訊息送往接收端的網路應用軟體以 進行處理。上述的虛擬網路卡驅動程式，可經由網路連結 介面與虛擬網路通訊協定層進行溝通；而虛擬網路卡驅動 程式亦可透過虛擬網路卡介面與虛擬網路卡進行信號之傳 送。於是在一機多用戶之架構下，各終端用戶間不僅可以 進行通訊，更可透過網際網路與其他電腦主機或用戶進行 溝通。 5-4圖式簡單說明： 經濟部智慧財產局員Η消費合作社印製 ' 本發明的較佳實施例將於往後之說明文字中辅以下列 圖形做更詳細的闡述： 第一圖描繪習知技術中的一機多平台架構之方塊結構圖； 第丄圖描繪本發明所揭露之虛擬網路在硬體架構上之架構 4 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局員工消f合作社印製 ^ 44 4 6 ή Α7 _Β7_ 五、發明說明（） 示意圖； 第三圖描繪本發明所揭露之虛擬網路在軟體架構上之架構 -示意圖； 第四圖描繪本發明之虛擬網路在執行初始化工作時之工作 流程圖， 第五圖描繪本發明之虛擬網路在發送訊息時的工作流程 圖； 第六圖描繪本發明之虛擬網路在接收訊息時的工作流程 圖； 第七圖描繪本發明較佳實施例中，虛擬網路卡驅動程式所 包含的軟體模纽； 第八圖描繪本發明較佳實施例中，網路卡介面所包含的軟 體模組；及 第九圖描繪本發明較佳實施例中，虛擬網路線所包含的軟 體模組。 5-5發明詳細說明： 請參閱第二圊，其描繪本發明所揭露之虛擬網路在硬 體架構上之架構示意圖。在第二圖中共描繪出三個終端用 戶202A、 202B、與202C其分別透過虛擬網路卡204A、 204B、204C與虛擬網路線206相連，進而構築出虚擬網 路208。應注意的是，終端用戶202A、202B、與202C係 如第一圖所描繪之習知架構般透過纜線 1 06與電腦主機 1 0 2相連，但虛擬網路線2 0 6與虛擬網路2 0 8則係由軟體 本紙張尺度適用中國固家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) —訂---------線' *4446 A7 B7 五、發明說明（ 模擬而來的’所以能在不添購任何硬體元件下，完成一機 多用戶間的網路架構。 接下來請參閱第三圖，复扣洛士 & q 為繪本發明所揭露之虛擬網 路在軟體架構上之架構示音圖，* — a 再不思國，並在虛擬網路2 0 8上利用 訊息之傳送來做解說；在第=阁1*· + UJ· & 你弟一圖左方所描繪的係訊息發送 端、而右方則為訊息接收瑞，甘过、4444 61 Printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the Invention (5-1) Field of the Invention: The present invention relates to a virtual network system and method, especially in the 'one machine multi-user architecture' Virtual network system and method capable of performing network communication function without increasing hardware cost. 5-2 Background of the Invention: With the development of information technology, the computing power of computers is also increasing. Therefore, in the past, only the way of communicating with supercomputers through terminals was gradually replaced by various networks. However, even in the era when personal computers have been widely used, a computer can only be used by one user at a time. Therefore, even today, with the rapid development of electronic technology, the above-mentioned usage conditions have a significant impact on computer resources. Words are still wasteful, and they ca n’t play the best effect of today ’s electronic devices. Therefore, in the conventional technology, a multi-user architecture has been developed in personal computers. Please refer to the first figure, which depicts the conventional technology, a block structure circle of a multi-platform architecture is constructed under the Windows 95/98 platform, which is a multi-user adapter card structured on a power host 102. 4 to achieve the goal. All end users can connect a multi-user adapter card 104 and a terminal controller 108 through a cable 106, and the display 1 1 〇, keyboard 1 12, and mouse 1 1 4 required by the end user The user interface is then connected to the terminal controller. It should be noted that 'each end user can build through the above-mentioned structure, so it is no longer described. In addition, the above-mentioned multi-user card 104 can use a PCI interface to be inserted in the mainframe of the computer. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please read the back first) Please note this page before filling in this page) I-1 ---- Order -------- line A7 Β7 44446ί V. Description of the invention () (Please read the notes on the back before filling this page) PC 丨 plug Slot; while the display 1 10, keyboard 1 12, and mouse 1 1 4 can be connected using LP D, C 0 M, or even USB port. Obviously,-each end user performing work under the above architecture can share resources such as hard disk, CPU, or printer in the host computer 102, and each end user uses it as if he had it alone The computer host is like 102, without feeling the presence of others, and it will not be interfered by other users, so the purpose of composing the computer host 102 resource is achieved. However, under the above-mentioned resource sharing structure, end users cannot be connected to a network; in other words, the end users under the above structure do not have the function of network communication, so the users cannot communicate with each other. What's more, because the current host computer 102 cannot distinguish which user the message sent by the network (whether it is the Internet or the local area network) is transmitted to, the above users cannot share network resources, that is, In the conventional one-machine multi-user architecture, users cannot use any network applications. Therefore, a virtual network capable of overcoming the above problems is urgently needed, which can eliminate the problems faced by the conventional technology without increasing the hardware cost. 5-3 Purpose and summary of the invention: Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. In view of the above background of the invention, in the conventional one-machine multi-user architecture, end users cannot use any network applications. The present invention is directed to The above disadvantages propose a system and method for constructing a network without any additional hardware cost. This paper size applies the Chinese National Standard (CNS) A4 specification (2i0 X 297 cm) 444461 A7 _B7_ V. Description of the invention () (Please read the precautions on the back before filling this page) According to the above-mentioned purpose, the present invention The provided virtual network system and method are based on a machine multi-user architecture and use software simulation to construct-construct a virtual network protocol layer 'virtual network card, virtual network card driver' and virtual network. Route to build a virtual network. When the sending network application software wants to send a message, the message will be decomposed into packets via the virtual network protocol layer, and then transmitted to the virtual network card through the virtual network driver. , And then put it into the sender's buffer, and wait for the virtual network route to reach the receiver. Next, the virtual network route will notify the receiver to receive the message packet, and then the virtual network route will move the message packet to the receiver's buffer, then receive the packet through the virtual network card, and send it through the virtual network card driver. Go to the virtual network protocol layer to decapsulate to get the message content, and then send the message to the receiving network application software for processing. The above virtual network card driver can communicate with the virtual network communication protocol layer through the network connection interface; and the virtual network card driver can also transmit signals with the virtual network card through the virtual network card interface. Therefore, under the structure of one machine and multiple users, each end user can not only communicate with each other, but also communicate with other computer hosts or users through the Internet. 5-4 Schematic illustration: Printed by a member of the Intellectual Property Bureau of the Ministry of Economic Affairs and a Consumer Cooperative, the preferred embodiment of the present invention will be explained in more detail in the following explanatory text with the following figures: The first picture depicts the conventional knowledge Block diagram of a multi-platform architecture in the technology; The second diagram depicts the hardware architecture of the virtual network disclosed in the present invention. 4 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 cm). (%) Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by a cooperative ^ 44 4 6 ή Α7 _Β7_ V. Description of the invention () Schematic diagram; The third diagram depicts the software architecture-schematic diagram of the virtual network disclosed by the present invention; The fourth figure depicts the working flowchart of the virtual network of the present invention when performing the initialization work, the fifth figure depicts the working flowchart of the virtual network of the present invention when sending a message; the sixth figure depicts the virtual network of the present invention when receiving The flow chart of the work during the message; Figure 7 depicts the software modules included in the virtual network card driver in the preferred embodiment of the present invention; Figure 8 depicts the preferred embodiment of the present invention , Network interface cards included in the software module body; and a ninth preferred embodiment of the present invention depicted in FIG embodiment, virtual network line module comprises a soft material. 5-5 Detailed Description of the Invention: Please refer to the second aspect, which depicts a schematic diagram of the hardware architecture of the virtual network disclosed in the present invention. In the second figure, three end users 202A, 202B, and 202C are depicted, which are connected to the virtual network line 206 through the virtual network cards 204A, 204B, and 204C, respectively, and then a virtual network path 208 is constructed. It should be noted that the end users 202A, 202B, and 202C are connected to the host computer 102 through the cable 106 as the conventional architecture depicted in the first figure, but the virtual network line 2 06 and the virtual network 2 0 8 means that the paper size of the software applies the Chinese solid standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) —Order --------- Line '* 4446 A7 B7 V. Description of the invention (simulated), so you can complete the network structure of multiple users on one machine without purchasing any hardware components. Next, please refer to the third picture士 & q is a sound diagram of the software architecture of the virtual network disclosed in the present invention, * — a rethinks the country, and uses the transmission of messages to explain on the virtual network 208; Court 1 * · + UJ · & Your brother's picture on the left is the sender of the message, and the right is the receiver of the message.
安叹如其係分別以終端用戶202A 與2 0 2 B為例。當终端用戶2 〇 2 、， 八欲傳达訊息至終端用戶 202Β之時’訊息將由網路應用軟體3q2a經由虛擬網路通 訊（Pr〇t〇C〇丨）層3〇4A之處理，將訊息轉換成封包（Packet) 後 再經由網路連結介面（Netw〇rk Binding interface)3〇8A送往虛擬網路卡驅動程式3〇6A進行處 理。最後，虛擬網路卡驅動程式3〇6A再透過網路卡介面 31 0A，以將封包送給虛擬網路卡2〇4A，最後再經由虛擬 網路線206，以將封包送至終端用戶2〇2Β〇接下來，當封 包經由虛擬網路線2 0 6傳送至終端用戶2 〇 2 Β時，將經由 虛擬網路卡204 Β所接收，再經由網路卡介面31〇β將封包 送往虛擬網路卡驅動裎式306Β以進行處理。接著，虚擬 網路卡驅動程式306Β再透過網路連結介面308巳將封包 送往虚擬網路通訊協定層304Β,以解出封包中的訊息，最 後再將訊息送往終端用戶 202Β中的網路應用軟體302Β 進行更進一步之處理。 上述對訊息在網路上進行傳遞的方式，事實上與 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公釐） (請先閱讀背面之注意事項再填寫本頁) ,-1¾ 訂---------線· 經濟部智慧財產局員Η消費合作社印製 444461 經濟部智慧財產局員工消費合作社印*'^ A7 B7 五、發明說明（） 利用硬體來傳輸封包之方式並無不同，所差別者僅是運用 軟體模擬與貫際硬體來執行而已。此外，廣為習知技術者 •所使用的網路通訊協定，諸如TCP/IP、IPX/SPX、甚或是 NetBEUI(用於區域網路或較單純之網路中）等皆可使用在 本發明之中。再者，上述的網路連結介面308A，可以是 Microsoft 的 NDIS (Network Driver Interface Specification)介面、Novell 的 ODI(Open D a t a I i n k Interface)介面、或是其他具有等效功能的介面，本發明所 揭露之架構對於上述之網路通訊協定並無特殊的限制。此 外’目前所使用的網路佈線型態，諸如Ethernet 802,2、 802.3或是Token Ring標準等，皆可使用在本發明之中， 而所使用的網路佈線型態可記錄在虛擬網路卡的資料結構 之中（可由步驟408來執行）。 接下來描述本發明所揭露之虛擬網路，在執行初始 化、發送訊息、以及接收訊息時之工作流程圊，其係分別 描繪於第四、五、六圊中。在電腦主機1 〇 2啟動後，將先 判斷該一機多用戶系統是否正常運作（步驟4 〇 2 )，若無法 正常運作則執行除錯處理（步驟404)。當系統可以正常運 作時’將分別向虛擬網路線206與虛擬網路通訊協定層登 §己該終端用戶的虛擬網路驅動程式（步驟 4 Q 6);隨後率统 將為每個終端用戶建立虛擬網路卡所需的資料結構（步驟 4 0 8)’而資料結構係用以儲存上述所建立之虛擬網路卡所 需的基本資料’同時亦配置該虛擬網路卡所必須的虛擬網 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ------------ΙΛΙ^--------訂---------線 7"^ * - (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 ^4446Γ Α7 _______Β7______ 五、發明說明（） 路卡編號。應注意的是，該虛擬網路卡编號係獨一無二的 編號，如一般的網路卡編號般，係作為辨識網路卡之用。 -接著，系統在讀取每個虚擬網路卡之物理特性設定檔案後 (步騍410)，再依據設定值向虛擬網路通訊協定層登記網 路卡的物理特性參數值（步驟 4 1 2 )，諸如虛擬網路卡所需 的，用以爭取CPU使用權的中斷要求（Interrupt request， I R Q)、或是儲存輸出入資料所必須的丨/0緩衝區之起始位 址與大小等參數。隨後系統並在讀取每個虛擬網路卡之參 數設定檔案後，進行各虚擬網路卡其他參數，諸如最大接 收封包長度（Maximum receive packet size)、最多月良務程 序（Maximum service processes)、或是最多封包接收緩衝 區（Maximum packet receive buffer)等參數之設定（步驟 414)’於是虛擬網路通訊協定層即可讀取各虛擬網路卡之 參數值，來啟動虛擬網路卡的中斷要求，最後再啟動虛擬 網路卡的接收功能（步驟416)，隨後再返回上述之初始化 結果。右上述之步驟可正常的執行完畢，則表示虛擬網路 卡已完成初始化的動作·之外’亦表示虛擬網路卡已可正常 工作了。 接下來利用第五圖來描述本發明之架構下傳送訊自之 工作流程。首先’欲傳送訊息之發送端，將由網路應用軟 體產生訊息，並在虚擬網路通訊協定層將訊息轉換成封包 後，通知虛擬網路卡驅動程式發送該封包（步雜5〇2)。而 虛擬網路卡驅動程式則在接收封包後，對虛擬網路卡的發 8 本紙張尺度適用中圉國家標準（CNS)A4規格（210 x 297公釐） (請先閱讀背面之注意事項再填寫本頁) -ϋ n I n ^OJ* ! f n n 線： 444461 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（） 送旗標進行偵測（步驟504)，.並當該發送旗標指出虛擬網 路卡係處於空間狀態時，再將封包送往發送端缓衝區，隨 -後再設定發送旗標（步驟 5 0 8 )，用以指出虛擬網路卡目前 正處於’’發送忙碌’’的狀態中。應注意的是，若虛擬網路卡 在步驟5 0 4中對發送旗標進行偵測，並獲得虛擬網路卡正 處於’’發送忙碌”之狀態時，必須執行等待的步驟（步驟 5 0 6)，直到發送旗標被清除後為止。接下來，虛擬網路卡 程式將分析要被發送之封包所要到達之目的虛擬網路卡， 再通知目的虚擬網路卡接收封包（步驟 5 1 0 )，隨後等到封 包確實已為目的虛擬網路卡所接收後（亦即接獲接收端確 實已收到封包之回覆），再將發送旗標設定為’’發送空閒’’狀 態（步驟 5 1 2 )，並將封包由發送端缓衝區中清除之（步驟 5 1 4)。應注意的是，上述之傳送封包流程係以’’ 一次傳送一 個封包”的方式進行，但是習知技術者可以將依據上述實施 例之精神，對上述之實施例進行修正，諸如將上述傳送封 包之流程改為一次傳送複數個封包等修正，而上述之等效 替換與修飾仍應包含在本發明之申請專利範圍中。 接下來利用第六圖來描述本發明之架構下接收訊息之 工作流程。首先，目的虛擬網路卡被通知即將收到訊息封 包（步驟 6 0 2 )，而後目的虛擬網路卡將偵測本身的接收旗 標之狀態（步驟604)，若接收旗標指出目前處於”接收忙碌' 時，則進行等待之操作（步驟 606)，直到目前的接收動作 完成為止。此外，若接收旗標係指出目前之狀態為”接收空 9 本紙張尺度適用令國國家標準（CNS)A4規格（210 X 297公釐） -----------" J --------訂---------線 J~ Y ~ ' 、’ (請先閱讀背面之注意事項再填寫本頁) 4 44 4 6 1 A7 _B7_ 五、發明說明（） 閒”之時，虛擬網路線2 0 6將封包由發送端缓衝區，移往目 的虛擬網路卡的接收端缓衝區，隨後發送訊息通知發送 -端，所傳送的封包已被確實的接收（步驟6 0 8 )，接下來再 設定接收旗標之狀態為"接收忙碌”（步驟6 1 0)。應注意的 是，步驟608係相當重要的步驟，因為步驟512係在接收 由步驟6 0 8所傳回之訊息而執行的，否則傳送端將無法判 斷所發送的封包是否被接收端正確的接收。接著，目的虚 擬網路卡中的虛擬網路卡驅動程式（如第三圓中的 306B)，將通知虛擬網路通訊協定層（如第三圖中304B之 所示）接收到訊息封包；接下來，虛擬網路通訊協定層將讀 取接收端缓衝區的位址（步驟 612)，以讀出傳送過來的訊 息封包，並將該訊息封包移往虛擬網路通訊協定層的資料 緩衝區中（步驟 6 1 4 )，以進行解封包以讀出訊息，並送往 網路應用軟體（如第三圊302 B之所示）之操作。最後，將接 收旗標重設為π接收空閒H之狀態（步驟6 1 6)，以準備下個訊 息封包之接收。 — 經濟部智慧財產局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 線· 值得注意的是，因為本發明利用虛擬網路通訊協定 層、虛擬網路卡、虚擬網路卡驅動程式 '以及虛擬網路線， 所構築出的虛擬網路，在實際之應用上與實體的網路卡與 網路線並無不同。所以對每個終端用戶而言，其他的終端 用戶可視為”架構在其他的電腦主機上的用戶”，因此達成 在一機多用戶架構上，構築出一虛擬網路之目的。再者， 因每個虚擬網路卡接如實體網路卡一般，被定義一個獨一 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 44446 1 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（） 無二、用作辨識之用的編號，因此當終端用戶透過電腦主 機以與區域網路或網際網路等，來與其他主機聯絡訊息 時，電腦主機仍可辨識所將接收/傳送訊息的終端用戶為 何，因此個別之終端用戶得以運用電腦主機之資源執行網 路功能，進而在終端用戶不互相干擾的情形下，共享網際 網路之資源。 第七至九圖分別描繪本發明較佳實施例中虛擬網路卡 驅動程式、網路卡介面、以及虛擬網路線所包含的軟體模 組（Module)與其所執行的功能。在第七圖中，虛擬網路卡 驅動程式共包含六個模組，其分別是虛擬網路卡驅動程式 初始化模組7 0 2，用以執行虛擬網路卡向虛擬網路通訊協 定層登記之步驟（亦即上述之步驟 406);虛擬網路卡建立 模組7 0 4，用以建立虛擬網路卡所需的資料結構（亦即上述 之步驟408);虛擬網路通訊協定層發送模組706，用以通 過虛擬網路卡以發送封包（亦即步驟 5 0 2);虛擬網路通訊 協定層接收模組7 0 8，用以由指定的虛擬網路卡以接收封 包（執行上述之步驟 614);虛擬網路通訊協定層參數設定 模组 7 1 0，用以設定虚擬網路卡的參數（執行上述之步驟 412與414);虛擬網路通訊協定層啟動模組712，用以讀 取虛擬網路卡的參數，以啟動虚擬網路卡來執行工作（執行 上述之步驟4 1 6)。 請參閱第八圖，其描繪網路卡介面所包含的軟體模An Tan Ruzhi takes the end users 202A and 202 B as examples. When the end user 2 0 2 and 8 want to transmit the message to the end user 202B, the message will be processed by the network application software 3q2a through the virtual network communication (Pr0c0 丨) layer 304A, and the message will be processed. After being converted into a packet, it is sent to the virtual network card driver 306A for processing through the Network Binding interface 308A. Finally, the virtual network card driver 306A then sends the packet to the virtual network card 204A through the network card interface 3100A, and finally passes the virtual network line 206 to send the packet to the end user 20. 2B〇 Next, when the packet is transmitted to the end user 2 0 2 B through the virtual network line 2 06, it will be received through the virtual network card 204 B, and then the packet will be sent to the virtual network through the network card interface 31 0 β. Luca drives Type 306B for processing. Then, the virtual network card driver 306B sends the packet to the virtual network protocol layer 304B through the network connection interface 308, to decipher the message in the packet, and finally sends the message to the network in the end user 202B. Application software 302B performs further processing. The above-mentioned way of transmitting information on the Internet, in fact, applies the Chinese National Standard (CNS) A4 specification (210 x 297 mm) to this paper size (please read the precautions on the back before filling this page). --------- Line · Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 444461 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs * '^ A7 B7 V. Description of the invention () Using hardware to transmit packets There is no difference. The only difference is the use of software simulation and cross-hardware implementation. In addition, widely used network protocols such as TCP / IP, IPX / SPX, or even NetBEUI (for local area networks or simpler networks) can be used in the present invention. In. In addition, the above-mentioned network connection interface 308A may be Microsoft ’s NDIS (Network Driver Interface Specification) interface, Novell ’s ODI (Open Data Interface) interface, or other interfaces with equivalent functions. The disclosed architecture has no special restrictions on the aforementioned network communication protocols. In addition, the currently used network wiring types, such as the Ethernet 802, 2, 802.3, or Token Ring standards, can be used in the present invention, and the used network wiring types can be recorded in the virtual network. Card data structure (performed by step 408). Next, the workflow of the virtual network disclosed in the present invention during the initialization, sending of messages, and receiving of messages is described, which are respectively depicted in the fourth, fifth, and sixth steps. After the host computer 102 is started, it will first determine whether the one-user multi-user system is operating normally (step 4 02), and if it cannot operate normally, execute a debugging process (step 404). When the system can operate normally, the virtual network driver for the end user will be registered to the virtual network line 206 and the virtual network protocol layer separately (steps 4 to 6); then the system will be established for each end user The data structure required by the virtual network card (step 408) ', and the data structure is used to store the basic data required by the virtual network card created above, and the virtual network required by the virtual network card is also configured This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ------------ ΙΛΙ ^ -------- Order -------- -Line 7 " ^ *-(Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ^ 4446Γ Α7 _______ Β7 ______ 5. Description of invention () Luca number. It should be noted that the virtual network card number is a unique number, like a normal network card number, and is used to identify the network card. -Next, after reading the physical property setting file of each virtual network card (step 410), the system registers the physical property parameter value of the network card with the virtual network protocol layer according to the set value (step 4 1 2 ), Such as the interrupt request (Interrupt request (IRQ) required by the virtual network card to obtain the right to use the CPU), or the initial address and size of the 丨 / 0 buffer necessary to store input and output data . Then, after reading the parameter setting file of each virtual network card, the system performs other parameters of each virtual network card, such as Maximum receive packet size, Maximum service processes, Or setting of parameters such as the Maximum packet receive buffer (Step 414) 'Then the virtual network protocol layer can read the parameter values of each virtual network card to enable the interruption of the virtual network card Request, and finally enable the receiving function of the virtual network card (step 416), and then return to the above initialization result. The above steps on the right can be executed normally, which means that the virtual network card has completed the initialization operation. Besides, it also means that the virtual network card is working normally. Next, the fifth figure is used to describe the workflow of transmitting messages from the framework of the present invention. First, the sending end of the message to be sent will be generated by the network application software, and after the message is converted into a packet at the virtual network protocol layer, the virtual network card driver is notified to send the packet (step 502). After receiving the packet, the virtual network card driver sends 8 paper sheets to the virtual network card. The paper size applies to the Chinese National Standard (CNS) A4 specification (210 x 297 mm). (Please read the precautions on the back before (Fill in this page) -ϋ n I n ^ OJ *! Fnn Line: 444461 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention () Send a flag for detection (step 504), and when the When the sending flag indicates that the virtual network card is in a space state, the packet is sent to the sending buffer, and then the sending flag is set (step 508) to indicate that the virtual network card is currently in the "Send busy" status. It should be noted that if the virtual network card detects the sending flag in step 504 and obtains that the virtual network card is in the "sending busy" state, the waiting step must be performed (step 50) 6), until the sending flag is cleared. Next, the virtual network card program will analyze the destination virtual network card to which the packet to be sent arrives, and then notify the destination virtual network card to receive the packet (step 5 1 0 ), Then wait until the packet is indeed received by the destination virtual network card (that is, the receiver has indeed received a reply from the packet), and then set the sending flag to the "send idle" state (step 5 1 2), and clear the packet from the sender's buffer (step 5 1 4). It should be noted that the above-mentioned transmission packet flow is performed in the manner of "transmitting one packet at a time", but the skilled person According to the spirit of the above embodiments, the above embodiments can be modified, such as changing the process of transmitting packets to transmitting multiple packets at a time, and the equivalent replacement and modification described above should still be Included in the patent application for the present invention range. Next, the sixth diagram is used to describe the workflow of receiving messages under the framework of the present invention. First, the destination virtual network card is notified that a message packet is about to be received (step 602), and then the destination virtual network card will detect the status of its own receiving flag (step 604). If the receiving flag indicates that it is currently "" When the “Receive Busy”, wait operation is performed (step 606) until the current receiving action is completed. In addition, if the receiving flag indicates that the current status is “receiving empty 9 paper standard applicable to the country ’s national standard (CNS) A4 specification (210 X 297 mm) ----------- " J -------- Order --------- line J ~ Y ~ '、 (( Please read the precautions on the back before filling this page) 4 44 4 6 1 A7 _B7_ V. Description of the invention () When it is idle, the virtual network route 2 0 6 will move the packet from the sender's buffer to the destination virtual network The receiving end buffer of Luca then sends a message to notify the sending end that the transmitted packet has been received surely (step 608), and then sets the status of the receiving flag to "Receive busy" (step 6 1 0). It should be noted that step 608 is a very important step, because step 512 is performed while receiving the message returned by step 608, otherwise the transmitting end will not be able to judge whether the sent packet is correctly received by the receiving end . Then, the virtual network card driver in the destination virtual network card (such as 306B in the third circle) will notify the virtual network protocol layer (as shown in 304B in the third figure) that the message packet is received; Next, the virtual network protocol layer will read the address of the receiving buffer (step 612) to read the transmitted message packet and move the message packet to the data buffer of the virtual network protocol layer. (Step 6 1 4) to de-encapsulate the packet to read the message and send it to the network application software (as shown in Section 3 302 B). Finally, the reception flag is reset to the state of π receiving idle H (step 6 16) to prepare for the reception of the next message packet. — Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling this page). It is worth noting that this invention uses the virtual network protocol layer, virtual network card, and virtual network. The card driver 'and the virtual network line, the virtual network constructed is no different from the actual network card and network line in actual application. Therefore, for each end user, other end users can be regarded as “users on other computer hosts”, thus achieving the purpose of constructing a virtual network on a multi-user architecture. Furthermore, because each virtual network card is connected like a physical network card, a unique paper size is defined to apply the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 44446 1 employee of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the consumer cooperative A7 B7 V. Description of the invention (2) No. 2. The number used for identification, so when the end user communicates with other hosts through the host computer to the local network or the Internet, etc., the computer The host can still identify what end users will receive / transmit messages, so individual end users can use the computer host's resources to perform network functions, and then share Internet resources without the end users interfering with each other. The seventh to ninth figures respectively depict the software network module driver included in the virtual network card driver, the network card interface, and the virtual network line in the preferred embodiment of the present invention and the functions they perform. In the seventh figure, the virtual network card driver includes a total of six modules, which are the virtual network card driver initialization module 702, which is used to perform registration of the virtual network card with the virtual network protocol layer. Steps (ie step 406 above); the virtual network card creation module 704 is used to create the data structure required by the virtual network card (ie step 408 above); the virtual network protocol layer sends Module 706 is used to send packets through the virtual network card (ie step 502); the virtual network protocol layer receiving module 708 is used to receive packets by the specified virtual network card (execution The above step 614); the virtual network protocol layer parameter setting module 7 10 is used to set the parameters of the virtual network card (perform steps 412 and 414 above); the virtual network protocol layer activation module 712, It is used to read the parameters of the virtual network card to start the virtual network card to perform the work (perform the above steps 4 1 6). Refer to Figure 8 which depicts the software modules included in the network card interface.
II 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297 ^17 (諳先閱堉背面之注意事項再填寫本頁) ---------訂---------線-_ -/ / - V- ^44461II This paper size applies to China National Standard (CNS) A4 (210 X 297 ^ 17 (谙 Please read the precautions on the back before filling this page) --------- Order ------- --Line -_-/ /-V- ^ 44461
五、發明說明（ 级。在第八圖巾，網路卡介面包含三個模級，分 網路卡初始化模組8Q2,用以初始化所以的虛㈣= (執行上述之步驟410);虚擬網路卡 吩卞 J吩下I迗模組8 〇 4， 通過所指定的虛擬網路卡向虛擬網線發 „ 上 秋适封包（執行上述 之步驟508);以及虛擬網路卡接收模組見 U 〇 用以通知虛 擬網路通訊協定層’於所指定的虛擬網路卡讀取所接收的 封包（執行上述之步驟6彳2)。虛擬網路線所包含的軟體模 組則描繪在第九圖中，其共有兩個模組，分別是網路發送 模組902，用以分析、尋找封包所要到達之目的虛擬網路 卡’並通知目的虛擬網路卡有封包要接收（執行上述之步驟 5 1 0、5 1 2、以及5 1 4);以及網路接收模組904，用以將封 包由發送端緩衝區移往接收端緩衝區，並通知發送端該封 包已被接收（執行上述之步驟608、以及61〇)。應注意的 是，習知技術者可在得知本發明之基本精神後’對上述第 七圖至第九圖所述之軟體模組進行修正，以變更軟體模組 所包含之功能，然該項修飾仍應包含在本發明之申請專利 範圍中。 綜合以上所述，本發明所揭露之虚擬網路系統與方 法，可提供一機多用戶之架構，在不需增加硬體成本之情 形下，即可進行構築的虛擬網路系統與方法’而•個別之 終端用戶亦可運用電腦主機之資源執行網路功能1 ’進而在 終端用戶不互相干擾的情形下，達到共享網際網路資源、之 目的。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (锖先閱讀背面之注意事項再填寫本頁) --------訂--------線、 經濟部智慧財產局員工消費合作社印刹^ 4 4446 A7 B7 五、發明說明（） 限之請 以示申 用揭之 Jii- 斤 έ 並明下 , 發在 已本含 而離包 例脫應 施未均 實它 ， 佳其飾 較凡修 之.，或 明圍變 發範改 本利效 為專等 僅請之 述申成 。 所之完内 上明所圍 以發下範 本神利 定精專 ------------I --------訂---------線 C - '.. (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）V. Description of the invention (level. In the eighth figure, the network card interface includes three module levels, which are divided into the network card initialization module 8Q2, which is used to initialize all virtual cards = (perform step 410 above); virtual network Luca 卞 J 下 Down I 迗 Module 8 〇, send the „Upcoming Packet (perform step 508 above) to the virtual network cable through the specified virtual network card; and see the virtual network card receiving module. U 〇 is used to notify the virtual network protocol layer 'to read the received packet on the designated virtual network card (perform step 6 彳 2 above). The software module included in the virtual network route is depicted in the ninth In the figure, there are two modules, namely the network sending module 902, which is used to analyze and find the destination virtual network card that the packet will reach and notify the destination virtual network card that there is a packet to be received (perform the above steps) 5 1 0, 5 1 2, and 5 1 4); and the network receiving module 904, which is used to move the packet from the sender's buffer to the receiver's buffer, and notify the sender that the packet has been received (perform the above) Steps 608, and 61). It should be noted that After knowing the basic spirit of the present invention, the surgeon can 'modify the software modules described in the seventh to ninth figures to change the functions included in the software module, but the modification should still be included in this Within the scope of the patent application for the invention. Based on the above, the virtual network system and method disclosed in the present invention can provide a multi-user architecture of one machine, which can be constructed without increasing the cost of hardware. Network systems and methods 'and • Individual end users can also use the resources of the host computer to perform network functions 1' and further achieve the purpose of sharing Internet resources without the end users interfering with each other. This paper standard applies China National Standard (CNS) A4 Specification (210 X 297 mm) (锖 Please read the precautions on the back before filling this page) -------- Order -------- Wire, Ministry of Economy Wisdom Employees of the Property Bureau, Consumer Cooperative Co., Ltd. 4 4446 A7 B7 V. Description of the invention () Please refer to Jii-Jin for application and disclosure, and make it clear. It ’s better decorated than what it is., Or Mingwei changed the model to change the benefits of the model into a special application only for the application. The end of the shangming is surrounded by the model to send the template Shenliding Jingzhu ------------ I- ------- Order --------- Line C-'.. (Please read the notes on the back before filling out this page) The paper printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies to this paper China National Standard (CNS) A4 specification (210 X 297 mm)