1291620 15015twf.doc/g 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種系統介面之擴充背板，且特別是 有關於一種小型電腦系統介面之擴充背板及應用此擴充背 板之電腦主機。 【先前技術】 在現在科技發達的年代，現在的電腦硬碟已經不再像 _ 以前一樣單純的只固定在電腦主機中，在市面上已經發展 出所謂的「抽取式硬碟」，而「抽取式硬碟」亦即將使用 者所想要擴充系統容量之硬碟加入系統中，係將欲擴充之 硬碟至於擴充抽取盒中，並利用擴充抽取盒插入系統中即 ’ 可擴充系統之容量，但是缺點是當擴充抽取盒在做插入或 • 取出之動作時，使用者都必須將系統電源關閉，才不至於 會造成系統或硬碟的損傷。 ' 叻钩丨汉進上迷之缺點，在市面上又出現了一種不須 關閉電源亦可擴充系統容量之小型電腦系統介面（如沾 Computer System hterface，以下簡稱SCSI)規格之抽取式 硬碟。 在SCSI介面之抽取式硬碟的電腦主機設計上，為了 主裨的别面板設計多個SCSI介面的擴充缠 二， .(Cpan^pn n,〇d,le slot) ""： F —， 請參相丨’歸示f知_種_域之讀 ... ... ' . . 、.七 6 --mMA . 1291620 15015twf.doc/g Ξ越者都希望SCSI介面的擴充模組插槽106能 夠越夕越好，㈣照所絲增加 數量，但是受限於電腦主機1006/7^4更亲（未、，、日不）的 栻的則板110之面積有限， 且先碟機102或軟碟機1〇4採「内建固 配置於電腦主機丨00上，益法 、σ σ M inn …沄更動或拆裝，以致於電腦主 、 刚反11()的擴充模組插槽106最多僅能供庫兩 組SCSI介面的抽取式硬碟。 ▼讀此供應兩 从从1匕1卜以往的擴充模組插槽106尸、能安裝scsi介面 惑式補，此限制也造成前面板110的空間運用的浪 外，電腦主機100中之光碟機102與軟碟機104僅 f寺定的情形下才會使用到，若將光碟機102或軟碟機104 设計成内建式，但卻不相反而顯得 【發明内容】 t發明的目的就是在提供—種小型電腦系統介面之 巧充月板即改良了 SCSI擴充模組插槽的設計，設計了 單-SCSI擴充模組插槽可與任—擴充模組連結，並支援 熱插拔之功能。 ^本發明的另一目的是提供一種電腦主機，此電腦主機 係運用SCSI介面之擴充背板進行資難電力之傳輸，且 本發明之電腦主機的前面板可放置任何不同之擴充模組， 以增加擴充模組之重複使用率。 本發明提出一種小型電腦系統介面（SCSI)之擴充背 板，係為一控制單元與一擴充模組進行資料與電力傳輸之 厂面。此小型電腦系統介面（SCSI)之擴充背板係包括至 1291620 15015twf.doc/g : 少一擴充模組插槽、一 SCSI介面、一通用串列匯流排 (Universal Serial Bus，以下簡稱USB)介面、一電源接 頭以及一熱插拔控制電路。其中，擴充模組插槽係用以連 接具有一組SCSI介面接腳之擴充模組。此外，SCSI介面 則電性耦接於控制單元與擴充模組插槽之間，用以傳輸一 小型電腦系統介面訊號。另外，USB介面係電性耦接至控 制單元與擴充模組插槽之間，用以傳輸USB訊號。再者， φ 電源接頭則係電性耦接至控制單元，並且用以傳輸控制單 元所提供之電源。最後，熱插拔控制電路，電性耦接至該 電源接頭以及該擴充模組插槽之間，用以控制控制單元所 提供之電源至擴充模組。 ， 依照本發明的較佳實施例所述小型電腦系統介面 (SCSI)之擴充背板，更可包括一通用串列匯流排集線 (USB hub)電路，其係電性耦接至多數個擴充模組插槽 與USB介面之間，用以接收多數個擴充模組插槽所傳遞之 USB訊號。 _ 依照本發明的較佳實施例所述小型電腦系統介面 (SCSI)之擴充背板，上述之SCSI介面接腳例如由多數 個SCSI訊號接腳、多數個USB訊號接腳以及多數個電源 接腳所構成。其中，SCSI訊號接腳對應連接至SCSI介面， 而USB訊號接腳則對應連接至USB介面，且電源接腳係 對應連接至熱插拔控制電路。 本發明另提出一種電腦主機，其係包括一控制單元、 至少一擴充模組、至少一擴充模組插槽、一 SCSI介面、 1291620 15015twf.doc/g - USB介面、-電源接頭以及—熱插拔控制電路。 擴，模組係與控制單元進行資料與電力之傳輪。此外 充模組，用以連接具有一組咖介面接 』 i且門而用1Γ係電_接於控制單元與擴充模組^ 之間’用以傳輸SCSI訊號。另外，咖介面係電 =控與擴充模組_之間，用以傳輸USB訊號。再 戶t据接至控制單元’用以傳輸控制單元 广’熱插拔控制電路係電性耗接至電源 插槽之間’用以控制控制單元所提供之 -、畜=本發明的較佳實施例所述之電腦主機，更可包括 插^排Ϊ線電路’電性輕接至多數個擴充模組 插t匯流排介面之間’用以接收此些擴充模組 插槽所傳遞之通用串列匯流排訊號。 依照本發明的較佳實施例所述之電腦主機，上述之擴 模、、且例如疋SCSI硬碟擴充模組，其係由一組SCSI介面 :擴充抽取盒以及一硬碟機所組成，而硬碟機配置 於擴充抽取盒内，並藉由此組SCSI介面接腳來傳輸資料。 此外，擴充模組例如是軟碟驅動擴充模組，其係由一組 SCSI介面接腳、_擴充抽取盒、—控制晶片以及一軟碟機 所、、且成而权碟機與控制晶片係配置於擴充抽取盒内，且 ，制曰曰^用以將軟碟機的傳輸介面的訊號轉換成訊 k ^藉由此組SCSI介面接腳來傳輸USB訊號。另外， 擴充模組例如疋光碟驅動擴充模組，其係由一組S⑶介 1291620 15015twf.doc/g 以及一光碟機所組成， 面接腳、一擴充抽取盒、一控制晶片 而光碟機與㈣⑼魏歸敎錄如，且控制曰片 用以將光销的傳輪介面軌賴換成聰 == 此組scsu面接腳來傳輸USB 並糟由 本發明係改良了 SCSI擴充模組插槽的設計將⑽ =、USB訊號與f源訊號能藉由單_ scsi介面接腳來 傳輸^使早-個擴充模組插槽可與任一擴充模組連結， 並支杈熱插拔之功能，亦即無須關閉系 •㈣謂電腦主機的前面板空間的運用更加的有彈；^ 可依據當時的需求，加裝使用者所需要之擴充模組。另外 更增加了擴充模組的重複使用率。 ▲為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂’下域舉較佳實施例，她合所關式，作詳細說 明如下。 【實施方式】 請參照圖2所示，圖2繪示依照本發明一較佳實施例的 一種電腦主機之電路方塊圖。此電腦主機2〇〇主要包括一 控制單元202、一小型電腦系統（SCSI)介面之擴充背板 204以及多數個擴充模組206。其中，控制單元2〇2係藉由 SCSI介面之擴充背板204與擴充模組206進行資料與電力 傳輸，例如是SCSI訊號、USB訊號以及電源訊號等。 控制單元202例如包括一主機板202a以及一電源供 應器202b，其中主機板202a係用以傳輸或接收SCSI訊 號、USB訊號以及訊號傳輸所需之工作電壓（例如5伏特 1291620 15015twf.doc/g 或12V)，而電源供應器2〇2b除了可提供主機板2〇2&所 需之工作電壓之外，更可提供額外電源（例如+5伏特以及 + 12伏特之電源）經由SCSI介面之擴充背板2〇4來驅動擴 充模組206。 在本實施例中，擴充模組206例如是SCSI介面之硬 碟擴充模組230、SCSI介面之軟碟驅動擴充模組24〇以及 scsi介面之光碟驅動擴充模組25〇，而SCSI介面之硬碟 擴充模組230的數量可依照系統所需之儲存容量來增加，1291620 15015twf.doc/g IX. Description of the Invention: [Technical Field] The present invention relates to an extended backplane of a system interface, and more particularly to an expansion backplane of a small computer system interface and the application of the expansion back Board computer host. [Prior Art] In the age of advanced technology, the current computer hard disk is no longer fixed in the computer as simple as before. The so-called "removable hard disk" has been developed in the market, and "extraction" The hard disk is also added to the system by the hard disk that the user wants to expand the system capacity. The hard disk to be expanded is added to the expansion box, and the capacity of the expandable system is inserted into the system by using the expansion extraction box. However, the disadvantage is that when the expansion cassette is being inserted or removed, the user must turn off the system power supply so as not to cause damage to the system or the hard disk. The shortcomings of the 叻 hook 丨 进 进 , , , , , , , 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨 丨In the design of the host computer of the SCSI interface removable hard disk, the expansion of the SCSI interface is designed for the main panel of the motherboard. (Cpan^pn n, 〇d, le slot) "": F — , please refer to the 丨 'representation f know _ kind _ domain read ... ' . . . . . 7 6 --mMA . 1291620 15015twf.doc / g Ξ 者 want SCSI interface expansion module The slot 106 can be better as the night eve, (4) the number of the wire is increased, but it is limited by the computer host 1006/7^4 more pro (not, day, day), the area of the board 110 is limited, and the first disc Machine 102 or floppy disk drive 1〇4 adopts “built-in solid configuration on computer host 丨00, benefit method, σ σ M inn ... 沄 change or disassembly, so that the computer main, just reverse 11 () expansion module The slot 106 can only be used for the removable floppy disk of the two sets of SCSI interfaces. ▼ Read this supply from the 1 匕 1 卜 previous expansion module slot 106 corpse, can install scsi interface confusing, this limit is also In the case where the space of the front panel 110 is used, the optical disk drive 102 and the floppy disk drive 104 in the computer main body 100 are only used in the case of setting the optical disk drive 102 or the floppy disk drive 104. It is built-in, but it is not the opposite. [Invention] The purpose of the invention is to improve the design of the SCSI expansion module slot by providing a small computer system interface, and designing a single- The SCSI expansion module slot can be connected to any expansion module and supports the hot plug function. Another object of the present invention is to provide a computer host that uses the SCSI interface to expand the backplane. The transmission of power, and the front panel of the computer host of the present invention can be placed with any different expansion module to increase the reuse rate of the expansion module. The present invention provides an expansion backplane for a small computer system interface (SCSI). A control unit and an expansion module for data and power transmission. The small computer system interface (SCSI) expansion backplane includes to 1291620 15015twf.doc/g: one expansion module slot, one SCSI interface a universal serial bus (USB) interface, a power connector, and a hot plug control circuit, wherein the expansion module slot is connected to have A set of SCSI interface pin expansion modules. In addition, the SCSI interface is electrically coupled between the control unit and the expansion module slot for transmitting a small computer system interface signal. In addition, the USB interface is electrically coupled. Connected to the control unit and the expansion module slot for transmitting the USB signal. Further, the φ power connector is electrically coupled to the control unit and is used to transmit the power provided by the control unit. Finally, the hot swap control circuit is electrically coupled between the power connector and the expansion module slot to control the power provided by the control unit to the expansion module. The expansion of the small computer system interface (SCSI) according to the preferred embodiment of the present invention may further include a universal serial bus (USB hub) circuit electrically coupled to the plurality of expansion modules. The slot between the group slot and the USB interface is used to receive the USB signal transmitted by the plurality of expansion module slots. According to a preferred embodiment of the present invention, a small computer system interface (SCSI) expansion backplane, such as a plurality of SCSI signal pins, a plurality of USB signal pins, and a plurality of power pins Composition. The SCSI signal pin is connected to the SCSI interface, and the USB signal pin is connected to the USB interface, and the power pin is connected to the hot plug control circuit. The invention further provides a computer host, which comprises a control unit, at least one expansion module, at least one expansion module slot, a SCSI interface, 1291620 15015twf.doc/g - USB interface, - power connector and - hot plug Pull out the control circuit. Expansion, module system and control unit for data and power transmission. In addition, the charging module is connected to have a set of coffee interface and the door is connected to the control unit and the expansion module to transmit the SCSI signal. In addition, the coffee interface is between the control unit and the expansion module _ for transmitting USB signals. The re-household t is connected to the control unit 'for transmitting the control unit wide'. The hot-swap control circuit is electrically connected between the power supply slots to control the control unit. The computer host of the embodiment may further include a plug-and-wire circuit for electrically connecting to a plurality of expansion modules between the bus interface and the interface for receiving the extensions of the expansion module slots. Serial bus signal. According to the computer host of the preferred embodiment of the present invention, the above-mentioned expansion, and, for example, a SCSI hard disk expansion module is composed of a set of SCSI interfaces: an expansion extraction box and a hard disk drive. The hard disk drive is disposed in the expansion extraction box, and transmits data by using the group SCSI interface pin. In addition, the expansion module is, for example, a floppy disk drive expansion module, which is composed of a set of SCSI interface pins, an _ expansion extraction box, a control chip and a floppy disk machine, and a right disk drive and control chip system. It is disposed in the expansion extraction box, and is configured to convert the signal of the transmission interface of the floppy disk into a signal to transmit the USB signal by using the SCSI interface pin. In addition, the expansion module is, for example, a CD-ROM drive expansion module, which is composed of a set of S(3) media 1292120 15015twf.doc/g and an optical disk drive, a surface pin, an expansion extraction box, a control chip and a CD player and (4) (9) Wei According to the record, and the control film is used to change the transmission interface of the optical pin to the Cong == This group of scsu face pins to transmit USB and the design of the SCSI expansion module slot is improved by the invention (10) The USB signal and the f source signal can be transmitted by the single _scsi interface pin. The early expansion module slot can be connected to any expansion module, and the hot plug function can be supported. Closed system (4) The use of the front panel space of the computer mainframe is more flexible; ^ The expansion module required by the user can be installed according to the needs at that time. In addition, the re-use rate of the expansion module is increased. The above and other objects, features, and advantages of the present invention will become more apparent and understood. [Embodiment] Please refer to FIG. 2. FIG. 2 is a circuit block diagram of a computer mainframe according to a preferred embodiment of the present invention. The mainframe 2 includes a control unit 202, an expansion backplane 204 of a small computer system (SCSI) interface, and a plurality of expansion modules 206. The control unit 2〇2 performs data and power transmission through the expansion backplane 204 and the expansion module 206 of the SCSI interface, such as SCSI signals, USB signals, and power signals. The control unit 202 includes, for example, a motherboard 202a and a power supply 202b for transmitting or receiving SCSI signals, USB signals, and operating voltages required for signal transmission (for example, 5 volts 1291620 15015 twf.doc/g or 12V), and the power supply 2〇2b can provide additional power (such as +5 volts and +12 volt power supply) via the SCSI interface in addition to the required operating voltage of the motherboard 2〇2& The board 2〇4 drives the expansion module 206. In this embodiment, the expansion module 206 is, for example, a SCSI interface hard disk expansion module 230, a SCSI interface floppy disk drive expansion module 24 〇, and a scsi interface optical disk drive expansion module 25 〇, and the SCSI interface is hard. The number of disk expansion modules 230 can be increased according to the storage capacity required by the system.
例如增加至二個或三個以上。此外，若電腦主機需要For example, increase to two or more. In addition, if the computer host needs
光碟機時，在不需要關閉主機電源之情況下，即可將SCSI 介面之光碟軸擴充模組25Q插人其中之—的擴充模組插 槽214中，以執行光碟機。同樣，當電腦主機2〇〇不需要 光碟機時’可將SCSI介面之光碟驅動擴充模組拔除 之後，再插入scsi介面之軟碟驅動擴充模組24〇，即可執 行軟碟機。若電腦主機不再使用光碟機或軟碟機時， 即可拔除並更換SCSI介面之硬碟擴充模組23G，以擴 統的儲存容量。 /、予、 承上所述，SCSI介面之硬碟擴充模組23〇主要係由一 組SCSI介面接腳232、一擴充抽取盒234以及一硬碟機 ^36所組成，而硬碟機236配置於擴充抽取盒234内，並 藉由此組scsi介面接腳232來傳輸資料。此外，scs 面之軟碟驅動擴充模組主要係由—組scsi介面接 4=擴充抽取盒244一控制晶片246以及一軟碟機撕 所組成，而軟碟機施肖控制晶片246係配置於擴充 11 1291620 15015twf.doc/g :246用以將軟碟機248的傳輸介面（例 tDD介面）的訊號轉換成咖訊號，並藉由此組㈣ .]面接腳242來傳輸。另外，光碟驅動擴充模組25〇主要 係由-組scsi介面接腳252、—擴充抽取盒254、一控制 晶片256以及-光碟機258所組成，❿光碟機祝與控制 晶片256係配置於擴充抽取盒254内，且控制晶片况用 以將光碟機258的傳輸介面（例如八丁趟介面）的訊號轉 # 換成USB訊號’並藉由此組SCSI介面接腳μ2來傳輸。 由此可知，上述任一擴充模組230、240、250分別具 有統-規格之scsi介面接腳232、242、252，不同的是: scsi介面之硬碟擴充模組23〇藉由SCSI介面接腳幻2來 .傳，scsi、訊號’然而SCSI介面之軟碟驅動擴充模組24〇 係藉由SCSI介面接腳242來傳輪USB訊號，同樣地，SCSI 介面之光碟驅動擴充模組250係藉由SCSI介面接腳252 來傳輸USB訊號。傳統SCIS介面接腳具有80隻聊位， 除了用來傳輸SCSI訊號所需之接腳之外，尚有部分接腳 • 未定義其用途’例如第5隻腳、第6隻腳或第45隻腳、第 77隻腳等。因此，本發明乃利用上述未定義之接腳（例如 第5、第6隻腳）來作為傳遞USB訊號之腳位，故單一個 scsi介面接腳除了傳輸原本定義腳位的SCSI訊號之外， 更可傳輸本發明新定義腳位的USB訊號，以使單一個擴充 模組插槽210、212、214、216可與任一擴充模組230、240、 250相連結，進而增加了擴充模組插槽的重複使用率。 請參考圖2，為了具體實現支援熱插拔、SCSI訊號、 12 1291620 15015twf.doc/g • USB訊號的多功能SCSI介面接腳，本發明採用了 一種支 援小型電腦系統（SCSI)介面之擴充背板204，其係由多 • 個擴充模組插槽210、212、214、216、一小型電腦系統介 面（SCSI) 218、一通用串列匯流排介面（USB) 22〇、一 USB集線電路222、一電源接頭224以及一熱插拔控制電 路226所組成。其中，每一擴充模組插槽21〇、212、214、 216係用以連接任一具有SCSI介面接腳之擴充模組23〇、 • 24〇、25〇°此外，SCSI介面218則電性耦接於主機板2〇2a 與多數個擴充模組插槽210、212、214、216之間，並藉由 scsi介面接腳所定義的腳位來傳輸SCSI訊號。另外， 介面220例如藉由USB集線電路222而電性耦接至主機板 202a與多數個擴充模組插槽210、212、214、216之間， 並藉由scsi介面接腳新定義的腳位來傳輸USB訊號。 再者，電源接頭224係藉由熱插拔控制電路226而電 性耗接至電源供應器2〇2b與多數個擴充模組插槽21〇、 I] 214 216之間，用以傳輸電源供應器202b所提供之 電源，並藉由SCSI介面接腳所定義的電源腳位來提供電 力至任-擴充模組230、240、250。其中，熱插拔控制電 路26例如用來控制電源供應器2〇2b是否要對擴充模組 =0 240、250供應+5伏特和+ 12伏特的電源，藉以驅動 母^擴充模組中的硬碟機236、軟碟機248或光碟機258， 且當擴充模組故障短路時，此熱插拔控制電路226亦合 斷電流之保護，以防止電路受損。最後，咖介面^腳 232、242、252中，還定義一接地腳位（例如是第74隻腳）， 13 1291620 15015twf.doc/g 當有一擴充模組安裝於此支援SCSI介面之擴充背板204 時，接地腳位的電位可由高電位變為低電位，如此擴充背 板204能得知是否擴充模組已被插入任一擴充模組插槽 210、212、214、216 中。In the case of the optical disk drive, the SCSI interface optical disk expansion module 25Q can be inserted into the expansion module slot 214 of the SCSI interface to execute the optical disk drive without turning off the power of the host. Similarly, when the computer host 2 does not need an optical disk drive, the SCSI interface of the optical disk drive expansion module can be removed, and then the floppy disk drive expansion module 24 of the scsi interface can be inserted to execute the floppy disk drive. If the computer is no longer using a CD or floppy disk drive, the SCSI interface hard disk expansion module 23G can be removed and replaced to expand the storage capacity. The hard disk expansion module 23 of the SCSI interface is mainly composed of a set of SCSI interface pins 232, an expansion extraction box 234 and a hard disk drive 36, and the hard disk drive 236 It is disposed in the expansion extraction box 234, and transmits data by using the group scsi interface pin 232. In addition, the floppy disk drive expansion module of the scs surface is mainly composed of a group of scsi interface 4 = an expansion extraction box 244, a control chip 246, and a floppy disk cutter, and the floppy disk control device 246 is configured. The expansion 11 1291620 15015twf.doc/g: 246 is used to convert the signal of the transmission interface (such as the tDD interface) of the floppy disk drive 248 into a coffee signal number, and is transmitted by the group (4) surface pin 242. In addition, the CD drive expansion module 25 is mainly composed of a set of scsi interface pins 252, an expansion extraction box 254, a control chip 256, and an optical disk drive 258. The optical disk drive and the control chip 256 are arranged in the expansion. The casket 254 is controlled, and the control chip is used to convert the signal of the transmission interface (for example, the octopus interface) of the optical disk drive 258 to the USB signal and transmit the SCSI interface pin μ2. Therefore, any of the expansion modules 230, 240, and 250 has a system-specific scsi interface pin 232, 242, and 252, respectively. The difference is that the scsi interface hard disk expansion module 23 is connected by a SCSI interface. Foot illusion 2, pass, scsi, signal 'However, the SCSI interface floppy drive expansion module 24 藉 through the SCSI interface pin 242 to carry the USB signal, similarly, the SCSI interface CD drive expansion module 250 series The USB signal is transmitted through the SCSI interface pin 252. The traditional SCIS interface pin has 80 chat bits. In addition to the pins needed to transmit SCSI signals, there are still some pins. • The purpose is not defined, such as the 5th, 6th, or 45th. Feet, 77th foot, etc. Therefore, the present invention utilizes the undefined pins (for example, the fifth and sixth legs) as the pins for transmitting the USB signal, so that the single scsi interface pin transmits the SCSI signal of the originally defined pin, in addition to the SCSI signal. The USB signal of the newly defined pin of the present invention can be transmitted, so that a single expansion module slot 210, 212, 214, 216 can be connected with any of the expansion modules 230, 240, 250, thereby adding an expansion module insertion. The reuse rate of the slot. Referring to FIG. 2, in order to implement a multi-functional SCSI interface pin supporting hot plug, SCSI signal, 12 1291620 15015 twf.doc/g • USB signal, the present invention adopts an extended back support for a small computer system (SCSI) interface. The board 204 is composed of a plurality of expansion module slots 210, 212, 214, 216, a small computer system interface (SCSI) 218, a universal serial bus interface (USB) 22, and a USB hub circuit 222. A power connector 224 and a hot plug control circuit 226 are formed. Each expansion module slot 21〇, 212, 214, 216 is used to connect any expansion module with a SCSI interface pin 23〇, 24〇, 25〇°, and the SCSI interface 218 is electrically It is coupled between the motherboard 2〇2a and the plurality of expansion module slots 210, 212, 214, and 216, and transmits the SCSI signal through the pin defined by the scsi interface pin. In addition, the interface 220 is electrically coupled to the motherboard 202a and the plurality of expansion module slots 210, 212, 214, and 216, for example, by the USB hub circuit 222, and the newly defined pin is provided by the scsi interface pin. To transfer USB signals. Moreover, the power connector 224 is electrically connected to the power supply 2 〇 2b and the plurality of expansion module slots 21 〇, I] 214 216 by the hot plug control circuit 226 for transmitting power supply. The power provided by the device 202b provides power to the any-expansion modules 230, 240, 250 via the power pins defined by the SCSI interface pins. The hot plug control circuit 26 is used, for example, to control whether the power supply 2 〇 2b supplies +5 volts and + 12 volts to the expansion modules =0 240 and 250, thereby driving the hard in the motherboard. The disk drive 236, the floppy disk drive 248 or the optical disk drive 258, and when the expansion module fails to be short-circuited, the hot-swap control circuit 226 also protects against current damage to prevent circuit damage. Finally, in the coffee interface 232, 242, 252, a ground pin is also defined (for example, the 74th leg), 13 1291620 15015twf.doc/g. An expansion module is installed on the extended backplane supporting the SCSI interface. At 204, the potential of the ground pin can be changed from high to low, so that the expansion of the backplane 204 can know whether the expansion module has been inserted into any of the expansion module slots 210, 212, 214, 216.
由此可知，USB訊號與SCSI訊號以及電源訊號皆能 夠共用相同的擴充模組插槽，以達到USB以及SCSI介面 共用之效果。雖然本發明係以四個擴充模組插槽21〇、 212、214、216作為一範例說明，但不限定電腦主機2〇〇 之前面板僅能容納四個擴充模組插槽21〇、212、214、216， 且電腦主機200之型態不論是桌上型（deskt〇p)的主機或 或機架型（rack mount)的主機皆可適用。 综上所述，本發明係改良了 SCSI擴充模組插槽的設 δ十，將SCSI讯號、USB訊號與電源訊號能藉由單一 SCSI 介面接腳來傳輸，以使單一個擴充模組插槽可與任一擴充 模組連結，並支援熱插拔之功能。其優點在於可以讓電腦 主機的前面板空間的運用更加的有彈性，並可依據當時使 用者的需求，加裝使用者所需要之擴充模組。另外更增加 了擴充板組的重複使用率。據此，當電駐機需要使用光 碟驅動擴充模組來安裝軟體時，本發明可在不需要關閉主 機的情形下將軟碟驅動擴充模組先移除，接著再換上光 驅動擴充餘，則電齡機立即擁有光_動擴充模也可 以^裝軟體。而拆下的軟碟驅動擴充麻可於使用者 ，日守=即安裝插人電腦主機來使用，若當電腦 置不足時，可再更換上SCSI介_硬碟擴充模組來^ 1291620 15015twf.doc/g 且不會浪費前面板的空 系統的容量’翻场常的方便， 間。 雖然本發明已以較佳實施例揭 限定本發明，任何熟習此技藝者，在不;;=非用以 和範圍内，當可作此％ 本龟月之精神 ^A、目β 午之更動與潤飾，因此本發明之 犯圍之h專魏圍所界定者轉。之保遵 【圖式簡單說明】It can be seen that the USB signal and the SCSI signal and the power signal can share the same expansion module slot to achieve the USB and SCSI interface sharing effect. Although the present invention uses four expansion module slots 21〇, 212, 214, 216 as an example, but does not limit the computer host 2, the front panel can only accommodate four expansion module slots 21〇, 212, 214, 216, and the type of the computer host 200 can be applied to either a desktop (deskt 〇p) host or a rack mount host. In summary, the present invention improves the SCSI expansion module slot setting δ, and transmits SCSI signal, USB signal and power signal through a single SCSI interface pin, so that a single expansion module can be inserted. The slot can be connected to any expansion module and supports hot swapping. The advantage is that the front panel space of the computer mainframe can be more flexible, and the expansion modules required by the user can be added according to the needs of the user at the time. In addition, the reuse rate of the expansion board group is increased. Accordingly, when the electric parking machine needs to use the optical disc drive expansion module to install the software, the present invention can remove the floppy disk drive expansion module without first turning off the host, and then replace the optical drive expansion. Then the battery-aged machine immediately has the light_moving expansion mode and can also install the software. The removed floppy drive expansion can be used by the user. The Japanese Guardian = install the plug-in computer to use. If the computer is not enough, you can replace the SCSI _ hard disk expansion module to ^ 1291620 15015twf. Doc/g does not waste the capacity of the empty system on the front panel. Although the present invention has been described in terms of preferred embodiments thereof, those skilled in the art will not be able to make the % of the spirit of the turtle month. With the retouching, therefore, the infringement of the invention is defined by Wei Wei. The guarantee of compliance [simplified description of the schema]
圖1緣示習知一種電腦 圖2繪示依照本發明一 電路方塊圖。 主機之立體示意圖。 較佳實施例的一種電腦主機 之 【主要元件符號說明】 100 :電腦主機 102 :光碟機 104 :軟碟機BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a conventional computer. Fig. 2 is a block diagram of a circuit in accordance with the present invention. Stereoscopic diagram of the host. A computer host of a preferred embodiment [Main component symbol description] 100: Computer host 102: CD player 104: floppy disk drive
106 ··擴充模組插槽 110 :前面板 200 :電腦主機 202 :控制單元 202a ·主機板 202b :電源供應器 204 · SCSI介面之擴充背板 206 I擴充模組 210、212、214、216 :擴充模組插槽 218 ··小型電腦系統介面（SCSI) 1291620 15015twf.doc/g 220 :通用串列匯流排（USB)介面 222 :通用串列匯流排集線電路 224 ·電源接頭 226 :熱插拔控制電路 230 : SCSI硬碟擴充模組 232、242、252 : SCSI 介面接腳 234、244、254 :擴充抽取盒 236 :硬碟機 240 :軟碟驅動擴充模組 246、256 :控制晶片 248 軟碟機 250 光碟驅動擴充模組 258 光碟機106 ··Expansion module slot 110 : Front panel 200 : Computer host 202 : Control unit 202a · Motherboard 202b : Power supply 204 · Expansion interface of the SCSI interface 206 I Expansion modules 210 , 212 , 214 , 216 : Expansion Module Slot 218 · Small Computer System Interface (SCSI) 1291620 15015twf.doc/g 220 : Universal Serial Bus (USB) Interface 222 : Universal Serial Bus Circulation Circuit 224 · Power Connector 226 : Hot Swap Control circuit 230: SCSI hard disk expansion modules 232, 242, 252: SCSI interface pins 234, 244, 254: expansion extraction box 236: hard disk drive 240: floppy drive expansion module 246, 256: control chip 248 soft Disc player 250 CD drive expansion module 258 CD player
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