201201022 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種通用序列匯流排集線器，特別是關於一種 可切換下游埠為信號模式或充電模式的通用序列匯流排集線器。 【先前技術】201201022 VI. Description of the Invention: [Technical Field] The present invention relates to a universal serial bus hub, and more particularly to a universal serial bus hub that can switch downstream signals to a signal mode or a charging mode. [Prior Art]
由於通用序列匯流排（Universal Serial Bus Hub，USB)介面 具有隨插即用、熱插拔（hotplug)、資料傳輸速度快等多項優點， 因此通用序列匯流排（USB)為電子裝置與電腦之間最常使用的 連接介面之一。近年來，具有USB介面的電子裝置越來越多，例 如：手機、個人數位助理（personal digital assistant，pDA)、印表 機、滑鼠等’但因單-電腦裝置的通用序砸流排連接淳有限， 無法支援消費者對於通用序列匯流排連接埠的數量需求，為了解 決這個問題，業麵細發Α顧序舰流職線旨（㈣触）。 通用序舰流排鱗器可祕至電腦裝置，以允許多個具有 通用序列匯流排介面的電子裝置經由通用序列匯流排鱗器輕接 至電腦裝置。通用序寵流排祕器_途有四種：第—種為電 腦裝置透過個序舰流職提供電祕具有朝序列匯流 排介面的電子裝置’以使得電腦裝置可與具有通用序顺流排介 面的電子裝置進行資料的傳輸，例如：隨身碟。 第二種為電職置透過通用相輯觸線器提供電源給具 有通用序舰流排介_電找置，明具有序舰流排介 面的電子裝置之充電電池進行充電，例如：手機。第三 I i 3 201201022 裝置可透過通用序列匯流排集線器與具有通用序列匯流排介面的 電子裝置進行^料的傳輸，例如·印表機^第四種為電腦裝置可 透過通用序列匯流排集線器與具有通用序列匯流排介面的電子裝 置進行ί料的傳輸’同時亦可對具有通用序列匯流排介面的電子 裝置之充電電池進行充電。 也就是說，一般的通用序列匯流排集線器與電腦裝置連接 時才月b使得與通用序列匯流排集線器所連接的電子裝置與電腦 裝置間有傳輸資料的功能或對電子裝置的充電電池進行充電。當 通用序顺流排鱗ϋ未連接電職置時，黯任何魏（即不 能傳輸資料或對電子裝置充電）。 再者’目前存在有卿賴H將市t經過㈣整流滤波後， 以提供充f電源給電子裝置進行充電，但此種方式僅具有充電效 果而無資料傳輸的功能。 【發明内容】 #於以上問題’本發明提出一種通用序列匯流排集線器以 解決通用序舰流排躲II未連接電職置或電腦裝置關機時， 無法對具有顧序舰流齡面的電子裝置進行充電的問題。 本發明之獅序龍流觸料，其包括上料（upstream port) '至少一下游琿（d〇wnstreamp〇rt)、外部電源璋以及控制單 元。其中，控制單元與上游琿及下料電性連接。控制單元根據 上^皐之f性連棚脑婦下鱗為錢模式或充電模式。控 制單元包括，㈣單元藉__擇性地切換該下游槔為該 201201022 充電模式或信號模式。 也就是說，當上料的紐__使得㈣單元接收到高 離;立=(例如··上游槔咖裝置連接，且電腦裝置為開機狀 料未提供輕予下料時，控鮮元可藉由開關 游轉錢m使得上_射料_㈣料的傅 輸。备上鱗㈣性連接_使得控鄉元魏聰電位信號時 例如·上游埠與電腦裝置連接，且電腦裝置關機或者上游璋未 與電腦裝置連接），控鮮元可藉由開_換下鱗為充電模式， 此時由外部電源埠提供電軒下游埠，以對與下游埠所連接的電 子裝置進行充電。 s上游蟑的電性連接關係使得控制單元接收到高電位传號， 且外部電料_提供賴於下料時，财料可為充=式 或信號模^ ’且優先順序為錢赋，接著為充電料。換句話 說’控制單元可先藉由_切換下游埠為信號模式，以使得上游 璋與下游埠間進行資料的傳輸。若上游埠與下游埠間不進行資料 的傳輸則控制單元可藉由開關將下游蟑切換為充電模式，以對 下游埠所連接的電子裝置進行充電。 在本發明的-實施例中，當控制單元接收邊緣觸發信號 trigger)時’控鮮元將靖下鱗所需的電壓，以使得下游蜂重 置為充電模式或信號模<。其中，控制單元包括微控制單元㈤⑽ co咖1 unit)與P型金屬氧化半導體（!>-_ Metal 〇xide Semic—* ’ PM0S ) ’ P型金屬氧化半導體分別與微控制 201201022 電源及下游埠連接。 控制單元藉由微控制單元接收邊緣觸發信號（例如：通用序 列匯流排餘n拔離或連接_裝置的_)而輸出控制信號，p i金屬氧化半導體接收控俯g號以切斷下游埠所需的電塵，使得 下游埠可重新切換為充電模式或信號模式。 依據本發明之通用序舰流排絲器，控解元可依據上游 埠的電性連接隱，透侧騎雜地切換獨埠為充電模式或 信號模式鱗決通用序顏流難線器未連接電職置或電腦裝 置關機時，無法對具有通用序舰流排介面的電子裝置進行充電 的問題。再者，㈣單元可接受邊緣觸發錢（edge trigger)，並 切斷下游埠所㈣電壓，使得下料可以重置其狀態為充電模式 或信號模式。此外，若難鮮元整合於序舰流排集線器 的晶片中，則通用序列匯流排集線器可自行判斷上游埠的電性連 接關係並_或重置下鱗為充電赋翁麵式，崎低成本。 以上關於本發明_容說明及以下之實施方式的說明係用以 示範與解釋本發明的精神與原理’並且提供本發明的專利申請範 圍更進一步的解釋。 【實施方式】 请參照「第1圖」，係為依據本發明之通用序列匯流排集線 器的第-實施例連接架構示意®。通用序列匯流排集線器1〇〇 (Universal Serial Bus Hub ’ USB Hub)包括上游埠 102 (upstream port)、至少一下游埠l〇4 (downstreamport)、外部電源埠i〇5以 201201022 &控制單元1〇6。其中，上游埠1〇2可連接但不限於電腦裝置％， ，料IG4可連接電子裝置％，電子裝置％可為但不限於手機。 控制單元106的-端與上游埠1〇2電性連接，另一端與下游璋⑽ 電性連接。 在本實施例中，外部電源埠105未提供電壓予下游埠104.，且 控制單元1G6因上游埠1G2與電腦裝置9G連接而接收到高電位信 ^ 號，進而切換下游埠104為信號模式。 控制單元106包括開關110’下游埠104另包括正資料傳輸接 腳107 (D+)與負資料傳輸接腳1〇8 (D_)，當開關11〇因制到 上游埠102連接至電腦裝置9〇之電源傳輸接腳1〇9 (ygus)的 電壓為高電位（即偵測到上游埠1〇2與電腦裝置9〇連接，且電腦 裝置90為開機狀態），開關11〇控制正資料傳輸接腳1〇7與負資 料傳輸接腳108進行資料的傳輸，以使得開關11〇可切換下游埠 φ 1〇4為信號模式。其中，電源傳輸接腳109 (VBUS)係為用以接 收通用序列匯流排集線器100所需的電壓。此時，電子裝置92可 藉由通用序列匯流排集線器100與電腦裝置90進行資料的傳輸。 明參照「第2圖」’係為依據本發明之通用序列匯流排集線器 的第二實施例連接架構示意圖。通用序列匯流排集線器（UniversalSince the Universal Serial Bus Hub (USB) interface has many advantages such as plug-and-play, hotplug, and fast data transmission, the universal serial bus (USB) is between the electronic device and the computer. One of the most commonly used connection interfaces. In recent years, there have been more and more electronic devices with USB interfaces, such as mobile phones, personal digital assistants (pDA), printers, mice, etc., but because of the single-computer device's general-purpose serial bus connection淳 Limited, unable to support the consumer's demand for the number of universal serial bus connections, in order to solve this problem, the industry is careful to take care of the order of the ship ((4) touch. The universal sequence ship scale can be secreted to the computer device to allow multiple electronic devices having a universal serial bus interface to be lightly connected to the computer device via the universal serial bus scale. There are four types of general-purpose pet flow esoteric devices: the first type is a computer device that provides a computer with an electronic device that has a serial bus interface interface through a sequence of ships. The interface's electronic device transmits data, such as a flash drive. The second type is to provide power to the electric position through the universal phase line contactor to charge the battery with the general-purpose ship-to-ship _ electric finder, and the electronic device with the sequenced platoon interface, for example: mobile phone. The third I i 3 201201022 device can transmit the material through the universal serial bus hub and the electronic device having the universal serial bus interface, for example, the printer ^ the fourth type is the computer device can pass through the universal serial bus hub and An electronic device having a universal serial bus interface can also transfer a rechargeable battery of an electronic device having a universal serial bus interface. That is to say, when the general universal serial bus hub is connected to the computer device, the monthly b enables the function of transferring data between the electronic device connected to the universal serial bus hub and the computer device or charging the rechargeable battery of the electronic device. When the general order is not connected to the electric position, any Wei (ie, can not transmit data or charge the electronic device). Furthermore, there is currently a function of providing a charging power supply to the electronic device for rectifying and filtering after the city has been rectified and filtered by the city, but this method has only the charging effect and no data transmission. SUMMARY OF THE INVENTION [In the above problem] The present invention proposes a universal serial bus hub to solve the problem that the universal sequence ship is not connected to the electric device or the computer device is turned off, and the electronic device having the age of the ship is not available. The problem of charging. The lion sequence flow contact of the present invention includes an upstream port 'at least one downstream 珲 (d〇wnstreamp〇rt), an external power supply 璋, and a control unit. The control unit is electrically connected to the upstream crucible and the blank. The control unit is based on the upper and lower shackles of the brain, or the charging mode. The control unit includes, (4) the unit __ selectively switching the downstream port to the 201201022 charging mode or signal mode. That is to say, when the loading of the __ makes the (4) unit receive the high separation; the vertical = (for example, the upstream 槔 装置 装置 device connection, and the computer device is not provided with the light-feeding material, the control element can be By switching the switch money m to make the upper _ _ _ _ (four) material of the fast input. Prepare the scale (four) sexual connection _ so that the control of the township Wei Cong potential signal, for example, upstream 埠 connected with the computer device, and the computer device shutdown or upstream璋Not connected to the computer device), the control unit can be switched to the charging mode by the _ squaring, and the external power supply 埠 provides the downstream 埠 to charge the electronic device connected to the downstream 埠. The electrical connection relationship of the upstream 蟑 causes the control unit to receive the high potential mark, and the external electric material _ provides the charge or the signal mode and the priority order is the money assignment, and then the priority is the money assignment, and then the priority is the money assignment, and then For charging materials. In other words, the control unit can first switch the downstream mode to the signal mode to enable the data transmission between the upstream and downstream ports. If no data is transmitted between the upstream and downstream ports, the control unit can switch the downstream port to the charging mode by means of a switch to charge the electronic device connected to the downstream port. In an embodiment of the invention, when the control unit receives the edge trigger signal trigger, the voltage required by the control element will be reset to cause the downstream bee to reset to the charging mode or signal mode <. Wherein, the control unit comprises a micro control unit (5) (10) co-cafe 1 unit) and a P-type metal oxide semiconductor (!>-_ Metal 〇xide Semic-* 'PM0S) 'P-type metal oxide semiconductor respectively and micro-control 201201022 power supply and downstream 埠connection. The control unit outputs the control signal by receiving the edge trigger signal (for example, the general sequence bus line n is disconnected or connected to the device _) by the micro control unit, and the pi metal oxide semiconductor receives the control g value to cut off the downstream 埠 required The electric dust makes it possible to switch back to charging mode or signal mode. According to the general-purpose ship-stream wire arranging device of the present invention, the control solution element can be switched according to the electrical connection of the upstream raft, and the side-by-side riding ground switch is used as the charging mode or the signal mode. When an electric home or computer device is turned off, it is impossible to charge an electronic device having a general-purpose shipboard interface. Furthermore, the (4) unit can accept the edge trigger and cut off the voltage of the downstream device (4) so that the blanking can reset its state to the charging mode or the signal mode. In addition, if the difficult-to-use elements are integrated into the wafer of the sequence ship hub, the universal sequence bus hub can determine the electrical connection relationship of the upstream port and/or reset the scale to charge the surface. . The above description of the present invention and the following embodiments are intended to illustrate and explain the spirit and principles of the present invention and to provide a further explanation of the scope of the patent application of the present invention. [Embodiment] Please refer to Fig. 1 for the connection architecture diagram of the first embodiment of the universal serial bus concentrator according to the present invention. The Universal Serial Bus Hub 'USB Hub includes an upstream port 102 (upstream port), at least one downstream port (downstream port), and an external power source 埠i〇5 to 201201022 & control unit 1 〇 6. Wherein, the upstream 埠1〇2 can be connected but not limited to the computer device%, and the material IG4 can be connected to the electronic device%, and the electronic device% can be but not limited to a mobile phone. The end of the control unit 106 is electrically connected to the upstream 埠1〇2, and the other end is electrically connected to the downstream 璋 (10). In the present embodiment, the external power supply port 105 does not supply a voltage to the downstream port 104. The control unit 1G6 receives the high-potential signal by connecting the upstream port 1G2 to the computer device 9G, thereby switching the downstream port 104 to the signal mode. The control unit 106 includes a switch 110' downstream 104 that further includes a positive data transmission pin 107 (D+) and a negative data transmission pin 1 〇 8 (D_). When the switch 11 is connected to the upstream device 102 to the computer device 9 The voltage of the power transmission pin 1〇9 (ygus) is high (that is, the upstream 埠1〇2 is detected to be connected to the computer device 9〇, and the computer device 90 is turned on), and the switch 11〇 controls the positive data transmission connection. The foot 1〇7 and the negative data transmission pin 108 transmit data so that the switch 11〇 can switch the downstream 埠φ 1〇4 to the signal mode. The power transmission pin 109 (VBUS) is the voltage required to receive the universal serial bus hub 100. At this time, the electronic device 92 can transmit the data by the universal serial bus hub 100 and the computer device 90. Referring to "FIG. 2", a schematic diagram of a connection architecture of a second embodiment of a universal serial bus hub according to the present invention is shown. Universal Serial Bus Hub (Universal
Serial Bus Hub ’ USB Hub) 200 包括上游埠（UpStreamp〇rt) 202、 下游埠204( downstream port )、外部電源埠205以及控制單元206。 其中’上游埠202可連接但不限於電腦裝置9〇，下游埠2〇4可連 接電子裝置92，電子裝置92可為但不限於手機。控制單元矽^ 201201022 的端與上游埠202電性連接，另一端與下游槔2〇4電性連接。 其中’下游埠2〇4包括正資料傳輸接腳2们（叫與負資料傳輪 接腳 208 ( D-)。 、控制單元206因上鱗2()2與電腦裝置9()連接（即上游蜂加 連接至電腦裝置9〇之電源傳輸接腳⑽叫的電壓為高電 位）所以下游埠2〇4切換為信號模式，但由於外部電源谭2仍藉 由變壓器94連接市電以同時提供電壓予下游槔2〇4，所以下游痒 2(W可切換為雜模式或充韻式。其+，優先順序為信號模式， 接著為充電模I舉例而言，#上游槔2G2欲與下游槔2⑽進行 資料傳輸且亦對下游埠204所連接的電子裝置92進行充電時，會 優先處理上游埠202與下游槔204間的資料傳輸，接著才會對下 游璋204所連接的電子裝置92進行充電。其中，下游物4為信 號模式時，控制單元206控制正資料傳輸接腳2〇7 (D+)與負資 料傳輸接腳208⑻進行資料的職。下游槔2〇4為充電模式時， 控制單元206控制正資料傳輸接腳2〇7 (D+)與負資料傳輸接腳 2〇8 (D-)短路’以對下游槔·2〇4所連接的電子裝置％進行充電。 ’凊參照「第3圖」，係為依據本發明之通用序列匯流排集線 器的第二實施例連接架構示意圖^通用序舰流排集線器· (Universal Serial BusHub，職勵）包括上游璋3〇2 (叩伽啦 port)、下游璋304 (downstream port)、外部電源蟑3〇5以及控制 單元306。其中，上游埠3〇2未連接電腦裝置9〇，下游埠3〇4可 連接電子裝置92 ’電子裝置92可為但不限於手機。外部電源埠 201201022 3〇5可藉由麵94外接市電，髓㈣料碰缝壓後藉由 外部電源埠3〇5輸出電壓予下游埠州。控制單元則一端與上 游蟑302電性連接’另一端與下游物*電性連接。 控制單το 306因上游埠3〇4未與電腦襄置如連接，所以切換 下游埠304為充電模式。 在本實施例中，下游埠3〇4包括正資料傳輸接腳3〇7 (D+) 與負資料傳輸接腳308 (D〇，控制單元3〇6包括開關31〇。因控 制單元偵測到上游埠3〇2連接至電腦裝置％之電源傳輸接腳3〇9 (VBUS)的電壓為低電位（即未偵測到上游蜂如與電腦裝置 9〇連接或電腦裝置9G為關機狀態），所以開關·控制正資料傳 輸接腳307 (D+)與負資料傳輸接腳3〇8 (D_)短路，以使得下游 埠304為充電模式。其中，電源傳輸接腳娜⑽叫係為用以 接收通用序列匯流排集線器3〇〇所需的電壓。 在本實施财’當㈣單元接收邊_發信號（edge trigger)時（即高電轉變成低電位驗置或低電位機成高電位 的位置’也就是上游蟑3〇2拔離或連接電腦裝£ 9〇的瞬間），控 制單元306將切斷下游埠3〇4所需的電壓。 其中’控制單元306包括微控制單元314 (micro contr〇i unit) 316 (P-type Metal Oxide Semiconductor » PMOS) ’ P型金屬氧化半導體316分別與微控制單元3i4、電源 320及下游埠3〇4連接，且微控制單元314藉由邊賴發信號而輸 出控制信號’p型金屬氧化半導體训接收㈣錢_斷下 201201022 304所需的電Μ ’以使得下游璋3〇4可重置為充電模式或信號模 式。上述的電源為5伏特（voltage，v)，但本實施例並非用以限 定本發明，可依據實際需求進行調整。 依據本發明之通縣舰流鄕線器，控鮮元可依據上游 皐^電腦裝置的連接藝，透過關選擇性地切換下游槔為充電 模式或L號模式’以解決因為通用序列匯流排集線器未連接電腦 裝置或電職置Μ時’無法對電子裝置進行充電關題。其中， 當上游埠與電腦裝置連接，電職置為開機狀態，且外部電源璋 未提供予下游槔時，上游埠與下游蟫間進行資料的傳輸。當 上游蜂與電職置連接，電職機或者上鱗未與電腦裝置 連接時’由外部電科提供電予下游埠，以對與下料所連接 的電子裝置進行充電。當上游埠與電腦裝置連接，_裝置為開 機狀態’且外部電源埠同時提供電麼予下游埠時，可先進行上游 琿與下游埠之_#料傳輸，也可對下鱗所連接㈣ 行充電。 接著藉由控制單疋於上游埠連接或拔離電腦袭置時（即於 制單元接收到邊緣觸發信號），可切斷下游埠所需的電壓，使訂 游埠重置為充龍核信賴式。再者，若將上述的㈣單元敕 合在通用序醜流觸線H的晶0，射由_相匯流排^ 線器自打卿上游埠的雜連接義，並切麵重置下 電模式或信號模式，進而減少成本。 … 雖然本發明以前述的較佳實施例揭露如上，然其並非用以限 201201022 疋本發明’任何熟習相像技藝者，在賴離本發明祕神和範圍 内’备可作餅的更動與觸，因此本發㈣專娜護範圍須視 本說明書所附的申請專利範圍所界定者為準。 【圖式簡單說明】 第1圖係為依據本發明之通用序舰流排集線器的第一實施 例連接架構示意圖； 第2圖係為依據本發明之通用相匯流排集線器的第二實施 例連接架構示意圖；以及 第3圖係為依據本發明之通用序列匯流排集線器的第三實施 例連接架構示意圖。 ^ 【主要元件符號說明】 90 電腦裝置 92 電子裝置 94 變壓器 100、200、300 通用序列匯流排集線器 102'202 > 302 上游缚 104、204、304 下游埠 105、205、305 外部電源埠 106'206'306 控制單元 107、207、307 正資料傳輪接腳 108、208、308 負資料傳輸接腳 109、209、309 電源傳輪接腳 201201022 110 314 316 320 310 開關 微控制單元 P型金屬氧化半導體 電源The Serial Bus Hub 'USB Hub) 200 includes an upstream port (UpStream), a downstream port 204, an external power port 205, and a control unit 206. The 'upstream 埠 202 can be connected to, but not limited to, a computer device 9 〇, and the downstream 埠 2 〇 4 can be connected to the electronic device 92. The electronic device 92 can be, but is not limited to, a mobile phone. The end of the control unit 矽^ 201201022 is electrically connected to the upstream 埠202, and the other end is electrically connected to the downstream 槔2〇4. The 'downstream 埠2〇4 includes the positive data transmission pin 2 (called the negative data transfer pin 208 (D-). The control unit 206 is connected to the computer device 9 () by the upper scale 2 () 2 (ie The upstream bee is connected to the computer device. The power transmission pin (10) is called the high voltage. Therefore, the downstream 埠2〇4 is switched to the signal mode, but since the external power supply Tan 2 is connected to the commercial power by the transformer 94, the voltage is simultaneously supplied. To the downstream 槔2〇4, so the downstream itching 2 (W can be switched to the hybrid mode or the rhyme pattern. Its +, the priority order is the signal mode, then for the charging mode I, for example, # upstream 槔 2G2 wants to be downstream 槔 2 (10) When the data transmission is performed and the electronic device 92 connected to the downstream port 204 is also charged, the data transmission between the upstream port 202 and the downstream port 204 is preferentially processed, and then the electronic device 92 connected to the downstream port 204 is charged. Wherein, when the downstream object 4 is in the signal mode, the control unit 206 controls the positive data transmission pin 2〇7 (D+) and the negative data transmission pin 208 (8) to perform data. When the downstream 槔2〇4 is in the charging mode, the control unit 206 Control the positive data transmission pin 2〇7 (D +) Short-circuit with the negative data transmission pin 2〇8 (D-)' to charge the electronic device connected to the downstream port 〇2〇4. '凊 Refer to Figure 3 for general purpose in accordance with the present invention. The second embodiment of the serial bus hub is a schematic diagram of the connection architecture. ^Universal Serial Bus Hub, (Universal Serial BusHub) includes upstream 璋3〇2 (叩 啦 啦 port), downstream 璋 304 (downstream port), external The power source 〇3〇5 and the control unit 306. The upstream 埠3〇2 is not connected to the computer device 9〇, and the downstream 埠3〇4 is connectable to the electronic device 92. The electronic device 92 can be, but is not limited to, a mobile phone. External power supply 埠201201022 3 〇5 can be connected to the mains by external power supply. After the core (4) material is pressed, the output voltage is sent to the downstream state by the external power supply 〇3〇5. The control unit is electrically connected to the upstream 蟑302 at one end. The control unit το 306 switches the downstream port 304 to the charging mode because the upstream port 3〇4 is not connected to the computer device. In the present embodiment, the downstream port 3〇4 includes the positive data transmission pin 3〇. 7 (D+) and negative data transmission pin 308 (D〇, control The unit 3〇6 includes a switch 31. Since the control unit detects that the upstream 埠3〇2 is connected to the computer device, the power transmission pin 3〇9 (VBUS) has a low voltage (ie, no upstream bee is detected). If the computer device 9 is connected or the computer device 9G is in the off state, the switch/control positive data transmission pin 307 (D+) and the negative data transmission pin 3〇8 (D_) are short-circuited so that the downstream port 304 is charged. Mode, wherein the power transmission pin (10) is called the voltage required to receive the universal serial bus hub 3〇〇. In this implementation, when the (four) unit receives the edge_edge (that is, the high-voltage transition to the low-potential check or the low-potential device becomes the high potential position), that is, the upstream 蟑3〇2 is pulled out or connected to the computer. At the moment of £9, the control unit 306 will cut off the voltage required for the downstream 埠3〇4. Wherein the 'control unit 306 includes a micro-conductor unit 316 (P-type Metal Oxide Semiconductor) PMOS) 'P-type metal oxide semiconductor 316 and the micro control unit 3i4, the power source 320 and the downstream 埠3〇4 Connected, and the micro control unit 314 outputs a control signal by the signal of the 'p-type metal oxide semiconductor training reception (four) money _ off 201201022 304 required electric Μ 'to make the downstream 璋 3 〇 4 can be reset to charge Mode or signal mode. The power supply described above is 5 volts (v), but this embodiment is not intended to limit the present invention and can be adjusted according to actual needs. According to the invention, the Tongxian ship slinger can control the fresh element according to the connection art of the upstream 电脑^ computer device, and selectively switch the downstream 槔 to the charging mode or the L mode to solve the problem because the universal serial bus hub When the computer device or the electric device is not connected, the electronic device cannot be charged. Wherein, when the upstream port is connected to the computer device, the electric job is turned on, and the external power source is not provided to the downstream port, the data is transmitted between the upstream port and the downstream port. When the upstream bee is connected to the electric service, and the electric machine or the upper scale is not connected to the computer device, the external electrician supplies electricity to the downstream port to charge the electronic device connected to the blanking. When the upstream 埠 is connected to the computer device, the _ device is in the power-on state and the external power supply is simultaneously supplied with electricity to the downstream ,, the upstream 埠 and the downstream 埠# _# material transmission may be performed first, or the lower scale may be connected (four) Charging. Then, when the control unit is connected to the upstream port or pulled out of the computer (that is, the edge trigger signal is received by the unit), the voltage required for the downstream port can be cut off, so that the booking is reset to the charge of the dragon. formula. Furthermore, if the above-mentioned (4) unit is coupled to the crystal 0 of the general-order ugly flow line H, the _ phase-convergence line is connected to the upstream connection of the upstream 埠, and the cut surface resets the power-down mode or signal. Mode, which in turn reduces costs. Although the present invention has been disclosed above in the foregoing preferred embodiments, it is not intended to limit the invention to any of the skilled artisans of the present invention, and may be used to make changes and touches of the cake within the scope and scope of the present invention. Therefore, the scope of this (4) special care shall be subject to the definition of the scope of the patent application attached to this specification. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a connection structure of a first embodiment of a general-purpose shipboard hub according to the present invention; and FIG. 2 is a second embodiment of a general-purpose phase bus hub according to the present invention. Schematic diagram of architecture; and Figure 3 is a schematic diagram of a connection architecture of a third embodiment of a universal sequence bus hub according to the present invention. ^ [Main component symbol description] 90 Computer device 92 Electronic device 94 Transformer 100, 200, 300 Universal sequence bus hub 102'202 > 302 Upstream binding 104, 204, 304 Downstream 埠 105, 205, 305 External power supply 埠 106' 206'306 Control unit 107, 207, 307 Positive data transfer pin 108, 208, 308 Negative data transfer pin 109, 209, 309 Power transfer pin 201201022 110 314 316 320 310 Switch micro control unit P type metal oxidation Semiconductor power supply
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