TW201245969A - Electronic apparatus with circuit architecture for bus sharing - Google Patents
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201245969 ‘201245969 ‘
TW6954PA 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種電子裝置’且特別是有關於一種 電子裝置中共用一匯流排之電路架構。 【先前技術】 如智慧型手機、多媒體播放器、個人數位助理、數位 相機之可攜式裝置，由於使用方便，目前已成為使用者經 常隨身攜帶的物品。為了增強可攜式裝置連接能力 (connectivity)以延伸其他功能，業界提出多種不同的匯 流排，讓可攜式裝置能進一步與其他應用結合。在眾多的 標準之中，行動高畫質連結（Mobile High-Definition Link， MHL)是一種可以與高品質多媒體介面（high-definition multimedia interface，HDMI)相容的新標準，介定多媒體 裝置之視訊及音訊輸出的格式，讓行動裝置能連接高晝質 電視或相容的其他顯示裝置。 MHL目前採用最通行的連接方式，如基於USB標準 的連接器及匯流排，能讓智慧型手機、多媒體播放器等能 輸出高品質的視訊及音訊。 然而，為了符合如MHL之類的高速匯流排的規格， 手持裝置需要提供高速的訊號，内部匯流排必須要面對如 何維持訊號品質的問題。 【發明内容】 本發明提供有關於一種電子裝置中共用一匯流排之 201245969TW6954PA VI. Description of the Invention: [Technical Field] The present invention relates to an electronic device and, more particularly, to a circuit architecture in which a busbar is shared in an electronic device. [Prior Art] Portable devices such as smart phones, multimedia players, personal digital assistants, and digital cameras have become items that users often carry with them because of their ease of use. In order to enhance the connectivity of portable devices to extend other functions, the industry has proposed a variety of different busses to allow portable devices to be further integrated with other applications. Among the many standards, Mobile High-Definition Link (MHL) is a new standard that is compatible with high-definition multimedia interface (HDMI) to define the video of multimedia devices. And the format of the audio output allows the mobile device to connect to a high-quality TV or other compatible display device. MHL currently uses the most popular connection methods, such as USB-based connectors and busbars, to enable high-quality video and audio for smartphones and multimedia players. However, in order to meet the specifications of high-speed busbars such as MHL, handheld devices need to provide high-speed signals, and internal busbars must face the problem of how to maintain signal quality. SUMMARY OF THE INVENTION The present invention provides a common bus in an electronic device.
TW6954PA 電路架構之實施例，可讓多種訊號共翔―匯流排及連接 器，並能維持訊號品質。 根據本發明之一方面，提出一種電子裝置。此電子裝 置，包括一連接器、一資料匯流排、一第—組開關裝置以 及一第一控制單元。資料匯流排之一端連接到連接器。第 一組開關裝置，包括一第一開關裝置及一第二開關裝置。 第一開關裝置之一輸出埠連接到資料匯流排之另一端，第 一開關裝置選擇性地允許一第一訊號及一第二訊號之一 者通過，其中第一訊號之傳輸頻率實質上等於第一開關裝 之頻寬。第二開關裝置之一輸出埠連接到資料匯流排，第 二開關裝置選擇性地允許一第三訊號通過。第一控制單元 控制此第一組開關裝置以選擇性地允許一第一組訊號之 一通過資料匯流排和連接器，其中此第一組訊號包括第b — 訊號、第二訊號以及第三訊號。 根據本發明之另一方面，提出一種電子裝置，包括一 連接器、一資料匯流排、一組開關裝置以及一控制單元。 資料匯流排之一端連接到連接器，資料匯流排之另一端耦 接一第二sfl號。此組開關裝置，包括一第一開關裝置及一 第二開關裝置。第一開關裝置之一輸出埠連接至資料匯流 排，第一開關裝置選擇性地允許一第一訊號通過，'其中^ 一訊號之傳輸頻率實質上等於第一開關裝之頻寬。第二開 關装置之一輸出埠連接至資料匯流排，第二開關裝置選擇 性地允許一第二訊號通過。控制單元控制此組開關裝置以 選擇性地允許一組訊號之一通過資料匯流排和連接器，其 中此組訊號包括第一訊號、第二訊號以及第三訊號。 201245969The TW6954PA circuit architecture embodiment allows a variety of signals to be integrated into the bus and connectors and maintains signal quality. According to an aspect of the invention, an electronic device is proposed. The electronic device includes a connector, a data bus, a first set of switching devices, and a first control unit. One end of the data bus is connected to the connector. The first set of switching devices includes a first switching device and a second switching device. One output of the first switching device is connected to the other end of the data bus. The first switching device selectively allows one of the first signal and the second signal to pass, wherein the transmission frequency of the first signal is substantially equal to The bandwidth of a switch. One of the second switching devices has an output port connected to the data bus, and the second switching device selectively allows a third signal to pass. The first control unit controls the first group of switching devices to selectively allow one of the first group of signals to pass through the data bus and the connector, wherein the first group of signals includes the b-signal, the second signal, and the third signal . According to another aspect of the present invention, an electronic device is provided comprising a connector, a data bus, a set of switching devices, and a control unit. One end of the data bus is connected to the connector, and the other end of the data bus is coupled to a second sfl number. The set of switching devices includes a first switching device and a second switching device. The output of one of the first switching devices is connected to the data bus, and the first switching device selectively allows a first signal to pass, wherein the transmission frequency of the signal is substantially equal to the bandwidth of the first switch. One of the second switching devices has an output port connected to the data bus, and the second switching device selectively allows a second signal to pass. The control unit controls the set of switching devices to selectively allow one of the set of signals to pass through the data bus and the connector, wherein the set of signals includes the first signal, the second signal, and the third signal. 201245969
TW6954PA 根據本發明之另-方面，提出一種電子裝 連接器、-資料匯流排、-組開關裝置以及 ^ 資料匯流排之-端連接到連接器。此組開關裝；：。 第：開，置及一第二開關裝置。第一開關裝置二 埠連接至貝料匯流排。第一開關裴置具有一 别 -第二輸入槔’第一輸入槔及第二輸入崞連接一㈡ 及-第一訊唬，其中第一訊號之傳輸頻二 -開關裝之頻寬。第二開關裝置之-輸出埠連接：：：第 關裝置之第二輸入皡’第二開關裝置之—輸入崞連：：： 第三訊號。控制單元控制此組開關裝置以選擇 組訊號之-通過資料匯流排和連接器，其中 = 第一訊號、第二訊號以及第三訊號。 °虎匕括 為了對本發明之上述及其他方面有更佳的瞭解 特舉不同實施例，並配合所附圖式，作詳細說明如下文 【實施方式】 以下提供電子裝置中共用—匯流排之電路 施例，可讓多種訊號共享同—匯流排及連接器，並 訊號品質。 一、 以下舉例以-能相容於兩種高速資料匯流排標準的 資料匯流排為例，例如是相容於基於通用串列匯流排之標 準（Universal Serial Bus’ USB)以及行動高晝質連結 (Mobile High-Definition Link，MHL)之一資料匯流排為TW6954PA According to another aspect of the present invention, an electronic connector, a data bus, a group switch device, and a data bus are connected to the connector. This group of switches is installed;:. The first: open, set and a second switching device. The first switching device is connected to the bus bar. The first switch device has a second-to-second input port, a first input port, and a second input port, a (2) and a first port, wherein the first signal has a transmission frequency of two switches. The second switching device is connected to the output::: the second input of the second switching device, the second switching device, the input terminal, and the third signal. The control unit controls the set of switching devices to select the group signal-passing data bus and connector, wherein = the first signal, the second signal, and the third signal. In order to better understand the above and other aspects of the present invention, various embodiments are described in detail, and in conjunction with the accompanying drawings, as described in detail below. [Embodiment] The following provides a common-busbar circuit in an electronic device. The example allows multiple signals to share the same - bus and connector, and signal quality. 1. The following example uses a data bus that can be compatible with two high-speed data bus standards. For example, it is compatible with the standard serial bus (USB) and mobile high-quality links. (Mobile High-Definition Link, MHL)
例。實施例中的電路架構允許至少三種訊號能共享同一匯 流排及連接器。在一些實施例中，連接器例如是符合USB 201245969example. The circuit architecture in the embodiment allows at least three signals to share the same bus and connector. In some embodiments, the connector is, for example, compliant with USB 201245969
TW6954PA 標準的連接器，或是基於USB標準的連接器，如 micro-USB或mini-USB，或是結合基於USB標準與其他 自行定義的連接線的連接器。 在一些實施例中，使用頻寬較大的開關裝置來選擇性 地允許高速訊號的通過，例如是寬頻為480MHz、1GHz 或1.1GHz的開關裝置。例如第1圖繪示一高頻之切換裝 置（例如是寬頻為1GHz的開關裝置）之增益與頻率之關係 的響應曲線100,其中橫軸頻率是以對數尺度（log scale) 表示。為了讓通過此開關裝置的高速訊號保持訊號品質， 供下一電路級使用，在一實施例中，對於1 Ghz的高速訊 號，其訊號衰減實質上約為或少於-3dB。 第2A圖繪示一電子裝置中共用一匯流排之電路架構 之一實施例的示意圖。在第2A圖中，一電子裝置20包括 一資料匯流排201、一連接器205、一第一組開關裝置以 及一第一控制單元。資料匯流排201之一端連接到連接器 205。第一組開關裝置，包括一第一開關裝置210及一第 二開關裝置220。第一開關裝置210之一輸出埠0UT1連 接到該資料匯流排之另一端。第一開關裝置210選擇性地 允許一第一訊號S1及一第二訊號S2之一者通過。而第一 訊號S1之傳輸頻率實質上等於第一開關裝置210之頻 寬；這代表著：第一訊號S1通過第一開關裝置210時， 其訊號衰減實質上約為或少於例如-3dB，或其他第一訊號 S1之規格所允許的範圍之内。第二開關裝置220之一輸 出埠0UT2連接到資料匯流排201，第二開關裝置220選 擇性地允許一第三訊號S3通過。第一控制單元230，控 201245969TW6954PA standard connector, or USB-based connector, such as micro-USB or mini-USB, or a connector that combines USB-based standards with other custom-made cables. In some embodiments, a wider bandwidth switching device is used to selectively allow the passage of high speed signals, such as switching devices having a wide frequency of 480 MHz, 1 GHz or 1.1 GHz. For example, Fig. 1 shows a response curve 100 of the gain versus frequency of a high frequency switching device (e.g., a switching device having a wide frequency of 1 GHz), wherein the horizontal axis frequency is represented by a log scale. In order to maintain the signal quality of the high speed signal through the switching device for use by the next circuit stage, in one embodiment, the signal attenuation is substantially about or less than -3 dB for a 1 Ghz high speed signal. FIG. 2A is a schematic diagram showing an embodiment of a circuit structure sharing a bus bar in an electronic device. In Fig. 2A, an electronic device 20 includes a data bus 201, a connector 205, a first set of switching devices, and a first control unit. One end of the data bus 201 is connected to the connector 205. The first set of switching devices includes a first switching device 210 and a second switching device 220. One of the first switching devices 210 outputs 埠OUT1 to the other end of the data bus. The first switching device 210 selectively allows one of the first signal S1 and the second signal S2 to pass. The transmission frequency of the first signal S1 is substantially equal to the bandwidth of the first switching device 210; this means that when the first signal S1 passes through the first switching device 210, the signal attenuation is substantially equal to or less than, for example, -3 dB. Or within the range allowed by the specifications of the other first signal S1. One of the second switching devices 220 outputs 埠OUT2 connected to the data bus 201, and the second switching device 220 selectively allows a third signal S3 to pass. First control unit 230, control 201245969
TW6954PA 制第一組開關裝置以選擇性地允許—第一组訊號之一通 過以讓此通過之訊號得以通過資料匯流排2〇1和連接器 205，其中第-組訊號包括第-訊鍊y、第二訊號％以 及第三訊號S3。而開關裝置皆具有控制端，如控制端cu 及CL2 ’其他電路可藉由輸出控制訊號加以控制。 ”第-控制单το 230控制第1且開關裝置以使第一訊 號S1和第二訊號S2之-者只通過第―開關裝置21〇以 通過匯流排201和連接器205。 因為弟 一丨〈得输頻率實質上等於第一開關裝 置210之頻寬，故上述架構可 4米稱j u確保第一訊號S1的衰減 程度是在可正常操作的範圍内。例如，第一訊號S1從其 讯號源（未繪示）輸出，只通過第一開關裝置21〇 以通過匯 机排201和連接器2〇5，並沒有通過其他開關，故衰減程 度約在-3dB或以内。如此，第一訊號si訊號品質能得以 保持。反之’若通過兩個或以上的高頻開關裝置，衰減程 度很可能超出可正常操作的範圍内，例如大於_3dB。再 者，對於電子裝置的設計而言，上述實施例之在第一 開關裝置210到連接器2Q5之間，可以使用較為單純的電 路結構而不必再使用其他開關裝置。 在一些實施例中，上述電子裝置2〇之電路結構，可 ，不同速率訊號之多個訊享同—喊排及連接器，並 月匕維持sfU虎品質。在—實施例中，第_訊號S1例如是代 表傳輸?率實質上等於第一開關裝置Μ。之頻寬的訊 例如是一行動高晝質連結（MHL)訊號，或其他視訊或 曰訊矾號；而第二訊號S2例如是屬於高速的訊號，例如 201245969The first set of switching devices of the TW6954PA selectively allow - one of the first set of signals to pass through the data bus 2 〇 1 and the connector 205, wherein the first set of signals includes the first link y , the second signal % and the third signal S3. The switching devices all have control terminals, such as the control terminals cu and CL2', and other circuits can be controlled by outputting control signals. The first control unit το 230 controls the first and the switching means such that the first signal S1 and the second signal S2 pass through the first switching means 21 to pass through the bus bar 201 and the connector 205. The transmission frequency is substantially equal to the bandwidth of the first switching device 210, so the above structure can ensure that the attenuation degree of the first signal S1 is within the range of normal operation. For example, the first signal S1 is from its signal. The source (not shown) outputs only through the first switching device 21 to pass through the transceiver row 201 and the connector 2〇5, and does not pass other switches, so the attenuation is about -3 dB or less. Thus, the first signal The quality of the si signal can be maintained. Conversely, if two or more high frequency switching devices are used, the attenuation is likely to exceed the range of normal operation, for example, greater than _3 dB. Furthermore, for the design of electronic devices, the above In the embodiment, between the first switching device 210 and the connector 2Q5, a relatively simple circuit structure can be used without using other switching devices. In some embodiments, the circuit structure of the electronic device 2, In the embodiment, the _ signal S1 represents, for example, a transmission rate substantially equal to the first switching device Μ. The bandwidth information is, for example, a mobile high quality link (MHL) signal, or other video or communication nickname; and the second signal S2 is, for example, a high speed signal, such as 201245969.
TW6954PA 貫負上與第一成说S1具有相同或速率較小的尚速訊號’ 例如是一基於通用串列匯流排之標準（Universal SerialThe TW6954PA has the same or lower speed as the first-order S1. For example, it is a standard based on the universal serial bus (Universal Serial)
Bus，USB)的訊號，如符合 USB 1.0、USB 1.1、USB 2_0、 USB 3.0或其他基於USB的訊號。而另一實施例中，第 三訊號S3更可代表一數位或類比的音訊訊號，或一通用 非同步接收發送器（Universal asynchronous receiveiVtransmitter，UART)的訊號。在其他實施例中， 第一訊號S1亦可代表一基於通用串列匯流排之標準的訊 號。 第2B圖繪示在第2A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。如步驟S200所示，接收一 命令。例如是由電子裝置20所執行的系統程式或應用程 式或動體所接收一由使用者設定或是由上述程式或電子 裝置其他部分如韌體發出的命令。步驟S220接著決定此 命令代表使用哪一功能。若此功能係與上述第一組訊號之 一者有關的’則令此一有關的訊號使用匯流排2〇1。例如， 若此命令代表使用第一訊號S1有關的功能，則執行步驟 S231，令第一開關裝置21〇使第一訊號si通過並禁能第 二開關裝置220。若此命令代表使用第二訊號S2有關的 功能，則執行步驟S232，令第一開關裝置210使第二訊 號S2通過並禁能第二開關裝置22〇。若此命令代表使用 第二訊號S3有關的功能，則執行步驟3233，致能第二開 關裝置220以使第三訊號S3通過並禁能第—開關裝置幵 對於上述第2B圖之方法，例如是由電子裝置2〇之 201245969Bus, USB) signals such as USB 1.0, USB 1.1, USB 2_0, USB 3.0 or other USB-based signals. In another embodiment, the third signal S3 can represent a digital or analog audio signal or a universal asynchronous receive transceiver (UART) signal. In other embodiments, the first signal S1 may also represent a signal based on a standard of a universal serial bus. 2B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of FIG. 2A. As shown in step S200, a command is received. For example, a system program or an application program or a mobile device executed by the electronic device 20 receives a command set by a user or issued by the program or other parts of the electronic device such as a firmware. Step S220 then determines which function the command represents. If the function is related to one of the first group of signals, then the relevant signal uses the bus 2〇1. For example, if the command represents the function related to the use of the first signal S1, step S231 is executed to enable the first switching device 21 to pass the first signal si and disable the second switching device 220. If the command represents a function related to the use of the second signal S2, step S232 is executed to cause the first switching device 210 to pass the second signal S2 and disable the second switching device 22A. If the command represents the function related to the second signal S3, step 3233 is executed to enable the second switching device 220 to pass the third signal S3 and disable the first switching device. For the method of the second FIG. 2B, for example, By electronic device 2〇201245969
1 WbyM^A 一處理單元（如中央處理器、微控制器、數位訊號處理器） 來接收一命令，並控制第一控制單元230發出控制訊號以 依據步驟S231至S233控制第一組開關裝置。在另一實 施例中，第一控制單元230則執行上述第2B圖之方法。 在一實施例中，第一控制單元23◦可以為電子裝置20之 一處理單元。而實現第2A或2B圖之方式，並不以此為限。 第3A圖繪示一電子裝置中共用一匯流排之電路架構 之另一實施例的示意圖，其中此電子裝置使用雙處理器。 第3A圖所代表的電子裝置30與第2A圖之電子裝置20 之差異在於：電子裝置30更包括一第一擴充開關裝置320 及一第二控制單元340。第一擴充開關裝置320之一輸出 埠OUT3,耦接至第一開關裝置210之用以接收一訊號（例 如第二訊號S2)之一輸入埠（如IN 1或IN2)。第一擴充開關 裝置320選擇性地允許一第一擴充訊號E1通過。第二控 制單元340，控制至少此第一擴充開關裝置320以選擇性 地允許第一擴充訊號E1通過。而第一擴充開關裝置320 置具有控制端，如控制端CL3，其他電路可藉由輸出控制 訊號加以控制。 在第3A圖之實例施中，第一控制單元330及第二控 制單元340更控制上述第一組開關裝置和第一擴充開關裝 置320以選擇性地允許第一擴充訊號E1通過第一擴充開 關裝置320。 由於此電子裝置30使用至少兩處理器，如雙核心處 理器或雙處理器，故此電子裝置30對應地，更包括了第 一擴充開關裝置320及第二控制單元340。在一實施例1 WbyM^A A processing unit (such as a central processing unit, a microcontroller, a digital signal processor) receives a command and controls the first control unit 230 to issue a control signal to control the first group of switching devices in accordance with steps S231 to S233. In another embodiment, the first control unit 230 performs the method of Figure 2B above. In an embodiment, the first control unit 23A can be a processing unit of the electronic device 20. The way to implement the 2A or 2B diagram is not limited to this. FIG. 3A is a schematic diagram showing another embodiment of a circuit architecture sharing a bus bar in an electronic device, wherein the electronic device uses a dual processor. The difference between the electronic device 30 represented by FIG. 3A and the electronic device 20 of FIG. 2A is that the electronic device 30 further includes a first expansion switch device 320 and a second control unit 340. One of the first expansion switching devices 320 outputs 埠OUT3, and is coupled to the first switching device 210 for receiving an input signal (such as IN 1 or IN2) of a signal (for example, the second signal S2). The first expansion switch device 320 selectively allows a first extended signal E1 to pass. The second control unit 340 controls at least the first extended switching device 320 to selectively allow the first extended signal E1 to pass. The first expansion switch device 320 is provided with a control terminal, such as the control terminal CL3, and other circuits can be controlled by outputting a control signal. In the example of FIG. 3A, the first control unit 330 and the second control unit 340 further control the first group of switching devices and the first expansion switch device 320 to selectively allow the first extended signal E1 to pass the first extended switch. Device 320. Since the electronic device 30 uses at least two processors, such as a dual core processor or a dual processor, the electronic device 30 correspondingly includes a first extended switching device 320 and a second control unit 340. In an embodiment
201245969 TW6954PA 中，第一擴充訊號E1是使兩個處理器作内部的溝通之用。 故此，第3B圖繪示在第3A圖之電子裝置中共用此 匯流排之方法之一實施例的流程圖。如步驟S3〇〇 ^示， 接收-命令。例如是由電子裝置3〇所執行的系統程^或 應用程式或韌體所接收一由使用者設定或是由上述程式 或電子裝置其他部分如勃體發出的命令。步驟S32〇接^ 決定此命令代表使„ —功能。若此命令代表使用第一訊 號si有關的功能，則執行步驟S331，令第一開關裝置 210使第-訊號S1通過並禁能第二開關裝置2^第一 擴充開關裝置32〇。若此命令代表使用第二訊以2有關 的功能，則執行步驟S332，令第—開關裝置⑽使第二 訊號S2通過並禁能第二關裝置22q及第 若此命令代表使用第三訊號33有關的功= 致能第二開關裝置220以使第三«抑 通過並尔此第一開關裝置21〇及第一 若此命令代表使用第二《S2及第一擴充;號裝二： =!第則執行步驟S340,致能第-擴充開關褒置320並 不此第一開關裝置210及第二開關裝置22〇。 如此，在-實施例中，電子裳置3〇之電 供多處理HU由第-擴充訊號E1作溝通之用。 充訊號E1被允許通過第—擴充開㈣置咖時=^ 制單元咖及第二控制單元34〇,控制第一擴充 ^ 320導通’且控制上述第一組開關褒置〇、 一义 中’第二訊號S2與第-擴充訊號E1皆^ —施例 列匯流排之標準的訊號，如符合USB ] q、υ‘ 11 201245969In 201245969 TW6954PA, the first extended signal E1 is used for internal communication between the two processors. Therefore, FIG. 3B is a flow chart showing an embodiment of a method for sharing the bus bar in the electronic device of FIG. 3A. As shown in step S3, the - command is received. For example, a system program or an application or firmware executed by the electronic device 3 receives a command set by the user or issued by the program or other parts of the electronic device. Step S32 is connected to determine that the command represents the function. If the command represents the function related to the use of the first signal si, step S331 is executed to enable the first switching device 210 to pass the first signal S1 and disable the second switch. The device 2^ the first expansion switch device 32. If the command represents the function related to the second message 2, step S332 is executed to enable the first switch device (10) to pass the second signal S2 and disable the second switch device 22q. And if the command represents the work related to the use of the third signal 33, the second switch device 220 is enabled to enable the third switch to pass the first switch device 21 and the first if the command represents the use of the second "S2" And the first expansion; the number two: =! The first step S340 is performed, the first expansion switch device 320 is enabled not to the first switching device 210 and the second switching device 22. Thus, in the embodiment, The electronic storage multi-processing HU is used for communication by the first-expansion signal E1. The charging number E1 is allowed to pass the first-expansion (four) setting of the coffee machine = ^ system unit and the second control unit 34〇, control The first expansion ^ 320 is turned on and controls the first group of switches , In a sense 'of the second signal S2 and - ^ are expanded signal E1 - of the column signal bus standard embodiment, such as compliance with USB] q, υ' 11 201245969
TW6954PA 2.0、USB 3·0或其他基於USB的訊號。在其他實施例中， 第二訊號S2與第一擴充訊號E1亦可以為其他讓電子裝置 30之多處理器作溝通之用的訊號。 第4A圖繪示一電子裝置中共用一匯流排之電路架 構之又一實施例的示意圖。電子裝置4〇包括：一資料匯 排201、一連接器205、一組開關裝置以及一控制單元 430。資料匯流排201之一端連接到連接器2〇5，而資料 匯流排201之另一端輛接一第二訊號S3。此組開關裝置， 包括一第一開關裝置410及一第二開關裝置42〇。第一開 關裝置410之一輸出埠OUT1連接至資料匯流排2〇1，第 一開關裝置410選擇性地允許一第一訊號si通過，其中 第一訊號S1之傳輸頻率實質上等於該第一開關裝之頻 寬。第二開關裝置420之一輸出埠OUT2連接至資料匯流 排201，第一開關裝置410選擇性地允許一第二訊號S2 通過。控制單元430，控制此組開關裝置以選擇性地允許 一組訊號之一通過，以讓此通過之訊號得以通過資料匯流 排201和連接器205，其中此組訊號包括第一訊號S1、 第二訊號S2以及第三訊號S3。 在一實施例中，控制單元430控制此組開關裝置以使 第一訊號S1只通過第一開關裝置410以通過匯流排201 和連接器205。 在一實施例中’控制單元430控制此組開關裝置以允 許第一訊號S1及第二訊號S2之一通過以讓此通過之訊號 得以通過資料匯流排201和連接器205時，第三訊號S3 係處於一高阻抗狀態，以禁能第三訊號S3。TW6954PA 2.0, USB 3.0 or other USB-based signals. In other embodiments, the second signal S2 and the first extended signal E1 may also be other signals for communicating with multiple processors of the electronic device 30. FIG. 4A is a schematic diagram showing still another embodiment of a circuit structure sharing a bus bar in an electronic device. The electronic device 4A includes a data repository 201, a connector 205, a set of switching devices, and a control unit 430. One end of the data bus 201 is connected to the connector 2〇5, and the other end of the data bus 201 is connected to a second signal S3. The set of switching devices includes a first switching device 410 and a second switching device 42A. An output 埠OUT1 of the first switching device 410 is connected to the data bus 2〇1, and the first switching device 410 selectively allows a first signal si to pass, wherein the transmission frequency of the first signal S1 is substantially equal to the first switch The bandwidth of the device. The output 埠OUT2 of one of the second switching devices 420 is coupled to the data bus 201, and the first switching device 410 selectively allows a second signal S2 to pass. The control unit 430 controls the set of switching devices to selectively allow one of the signals to pass, so that the passed signal passes through the data bus 201 and the connector 205, wherein the group of signals includes the first signal S1, the second Signal S2 and third signal S3. In an embodiment, the control unit 430 controls the set of switching devices such that the first signal S1 passes only the first switching device 410 to pass through the bus bar 201 and the connector 205. In an embodiment, when the control unit 430 controls the set of switching devices to allow one of the first signal S1 and the second signal S2 to pass through the data bus 201 and the connector 205, the third signal S3 is controlled. The system is in a high impedance state to disable the third signal S3.
S 12 201245969S 12 201245969
TW6954PA 因為第一訊號S1之傳輸頻率實質上等於第一 置410之頻寬，故上述架構可以確保第一訊號二: 程度於是在可正常操作的範圍内。例如，第一訊號/ 其訊號源（未繪示）輸出，只通過第一開關裴置410以T 匯流排201和連接n 205，並沒有通過其他開M，故= 程度約在-3dB或以内。如此，第一訊號S1訊號品質^猎 以保持。對於電子裝置40的設計而言，在第一開關^ 410之輸出埠〇UT1到連接器2〇5之間，可以使用較^單 純的電路結構而不必再使用其他開關裝置電路。 ’、、早 在一些實施例中，上述電子裝置40之電路結構，可 讓多種訊號共享同一匯流排及連接器，並能維持訊號品 質。在一實施例中，第一訊號S1例如是代表一傳輸頻率 實質上等於第一開關裝置410之頻寬的訊號，例如是二 MHL訊號，或其他視訊音訊訊號；而第三訊號S3是屬於 高速的訊號，例如實質上與第一訊號S1具有相同或速率 較小的高速訊號’例如是一基於USB標準的訊號，如符 合 USB 1.0、USB 1.1、USB 2_0、USB 3·0 或其他基於 USB的訊號。而另一實施例中，第二訊號S2更可代表一 數位或類比的音訊訊號’或一 UART訊號。在其他實施例 中’第一訊號S1亦可代表一基於USB標準的訊號。 第4B圖繪示在第4A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。如步驟S400所示，接收一 命令。例如是由電子裝置40所執行的系統程式或應用程 式或物體所接收一由使用者設定或是由上述程式或電子 裝置其他部分如韌體發出的命令。步驟S420接著決定此 13 201245969TW6954PA Since the transmission frequency of the first signal S1 is substantially equal to the bandwidth of the first set 410, the above architecture can ensure that the first signal 2: the extent is within the range of normal operation. For example, the first signal / its signal source (not shown) output, only through the first switch device 410 to the T bus bar 201 and the connection n 205, and does not pass other open M, so the degree is about -3dB or less . In this way, the first signal S1 signal quality ^ hunting to maintain. For the design of the electronic device 40, between the output 埠〇UT1 of the first switch 410 and the connector 2〇5, a simpler circuit configuration can be used without having to use other switching device circuits. In some embodiments, the circuit structure of the electronic device 40 allows a plurality of signals to share the same bus and connector and maintain signal quality. In one embodiment, the first signal S1 is, for example, a signal that has a transmission frequency substantially equal to the bandwidth of the first switching device 410, such as a second MHL signal, or other video audio signals; and the third signal S3 belongs to a high speed. The signal, for example, is substantially the same as the first signal S1 or has a small rate of high-speed signal 'for example, a USB-based signal, such as USB 1.0, USB 1.1, USB 2_0, USB 3.0 or other USB-based. Signal. In another embodiment, the second signal S2 can represent a digital or analog audio signal or a UART signal. In other embodiments, the first signal S1 may also represent a signal based on the USB standard. Fig. 4B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of Fig. 4A. As shown in step S400, a command is received. For example, a system program or application or object executed by the electronic device 40 receives a command set by the user or issued by the program or other parts of the electronic device such as a firmware. Step S420 then decides this 13 201245969
TW6954PA 命令代表使用哪一功能。若此命令代表使用第一訊號S1 有關的功能，則執行步驟S431，致能第一開關裝置410 並禁能第二開關裝置420及第三訊號S3。若此命令代表 使用第二訊號S2有關的功能，則執行步驟S432，致能第 二開關裝置420並禁能第一開關裝置410及第三訊號 S3。若此命令代表使用第三訊號S3有關的功能，則執行 步驟S433,禁能第一開關裝置410及第二開關裝置420。 對於上述第4B圖之方法，例如是由電子裝置40之 一處理單元（如中央處理器、微控制器、數位訊號處理器） 來接收一命令，並控制此控制單元430來發出控制訊號以 依據步驟S431至S433控制此組開關裝置。在另一實施 例中，控制單元430則執行上述第4B圖之方法。在一實 施例中，控制單元430可以為電子裝置40之一處理單元。 而實現第4A或4B圖之方式，並不以此為限。 如依據第4A圖之另一實施例中，第一開關裝置410 與第二開關裝置420的輸出埠與匯流排201的連接位置可 以對調。 除了上述的實施例以外，第5A圖繪示一電子裝置中 共用一匯流排之電路架構之另一實施例的示意圖。第5A 圖之電子裝置50與第2A圖之電子裝置20所包括的元件 相同，兩者之差異在於：在第5A圖中，第二開關裝置220 之輸出埠OUT2耦接到第一開關裝置210之輸入埠之一者 (如IN1或IN2)，例如是耦接到輸入埠IN2。 依據第5A圖之一實施例中，第一控制單元530控制 此組開關裝置（例如第一開關裝置210及第二開關關置 201245969The TW6954PA command represents which function is used. If the command represents the function related to the first signal S1, step S431 is executed to enable the first switching device 410 and disable the second switching device 420 and the third signal S3. If the command represents the function related to the second signal S2, step S432 is executed to enable the second switching device 420 and disable the first switching device 410 and the third signal S3. If the command represents the function related to the third signal S3, step S433 is executed to disable the first switching device 410 and the second switching device 420. For the method of the above FIG. 4B, for example, a processing unit (such as a central processing unit, a microcontroller, a digital signal processor) of the electronic device 40 receives a command, and controls the control unit 430 to issue a control signal according to the method. Steps S431 to S433 control the group of switching devices. In another embodiment, control unit 430 performs the method of Figure 4B above. In an embodiment, control unit 430 can be a processing unit of one of electronic devices 40. The way to implement Figure 4A or 4B is not limited to this. In another embodiment according to Fig. 4A, the connection position of the output switch 第一 of the first switching device 410 and the second switching device 420 to the bus bar 201 can be reversed. In addition to the above embodiments, FIG. 5A is a schematic diagram showing another embodiment of a circuit structure sharing a bus bar in an electronic device. The electronic device 50 of FIG. 5A is the same as the electronic device 20 of FIG. 2A, and the difference is that in FIG. 5A, the output 埠OUT2 of the second switching device 220 is coupled to the first switching device 210. One of the inputs (such as IN1 or IN2) is, for example, coupled to input 埠IN2. According to an embodiment of FIG. 5A, the first control unit 530 controls the set of switching devices (eg, the first switching device 210 and the second switch are closed 201245969)
TW6954PA 220)以使第一訊號S1只通過第一開關裝置21 〇以通過匯 流排201和連接器205。 依據第5Α圖之一實施例巾，第-控制單A 530控制 此組開關裝置以允許第三訊號S3通過第二開關裝置220 及第一開關裝置210並通過資料匯流排201和連接器2〇5 時，第二訊號S2係處於一高阻抗狀態，以禁能第二訊號 S2在—實施例中，第一控制單元530可於此情況下’例 二指二第二訊號S2之訊號源(未繪示)如第二訊號 一^且^態 32之訊號源之輸出埠（未繪示）處於 置訊號S1之傳輸頻率實質上等於第-開關裝 程度於是在可正構可以確保第一訊號S1的衰減 β +吊刼作的範圍内。例如，第一訊號S1從 =源(未繪示)輪出’只通過第-開關裝請以通過 和連接器205，並沒有通過其他開關，故衰減 :::在侧或以内。如此，第一訊號S1訊號品質能得 乂保持。在第5A圖之實施例中，在共用訊號之不同情況 下’第一開關裝置210之輸出埠〇UT1至連接器2〇5之間 匯机排201皆保持為單純的電路結構，有助於維持通過匯 流排201的訊號之品質。 第5B圖繪示在第5A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。第5B圖之方法與第5A圖之 方法相似’兩者之差異在於：在第5B圖中，若步驟S22〇 判斷此命令代表使用第三訊號S3有關的功能，則執行步 驟S533。在步驟S533中，禁能第二訊號S2，致能第二 15 201245969The TW6954PA 220) causes the first signal S1 to pass only through the first switching device 21 to pass through the bus bar 201 and the connector 205. According to an embodiment of the fifth embodiment, the first control unit A 530 controls the set of switching devices to allow the third signal S3 to pass through the second switching device 220 and the first switching device 210 and through the data bus 201 and the connector 2 At 5 o'clock, the second signal S2 is in a high impedance state to disable the second signal S2. In the embodiment, the first control unit 530 can in this case use the signal source of the second signal S2 ( The output of the signal source (not shown) such as the second signal and the state of the signal 32 (not shown) is at the transmission frequency of the signal S1 is substantially equal to the degree of the first switch, so that the first signal can be ensured in the correct state. The attenuation of S1 is within the range of β + condolences. For example, the first signal S1 is rotated from the = source (not shown), and only passes through the first switch to pass through the connector 205, and does not pass through other switches, so the attenuation ::: is on the side or inside. In this way, the quality of the first signal S1 signal can be maintained. In the embodiment of FIG. 5A, the difference between the output 埠〇UT1 of the first switching device 210 and the connector 2〇5 of the first switching device 210 is maintained as a simple circuit structure in the different cases of the shared signal, which contributes to The quality of the signal passing through the bus bar 201 is maintained. FIG. 5B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of FIG. 5A. The method of Fig. 5B is similar to the method of Fig. 5A. The difference between the two is that, in Fig. 5B, if it is judged in step S22 that the command represents a function related to the use of the third signal S3, step S533 is executed. In step S533, the second signal S2 is disabled, enabling the second 15 201245969
TW6954PA 開關裝置220以使第三訊號S3通過，並令第一開關裝置 210使第三訊號S3通過。 對於上述第5B圖之方法，例如是由電子裝置5〇之 一處理單元（如中央處理器、微控制器、數位訊號處理器） 來接收一命令，並控制第一控制單元530來發出控制訊號 以依據步驟S231至S533控制第一組開關裝置。在另一 實施例中，第一控制單元530則執行上述第5B圖之方法。 在一實施例中，第一控制單元530可以為電子裝置5〇之 一處理單元。而實現第5A或58圖之方式，並不以此為限， 並可參照上述其他實施例之方式實現。 在上述實施列及圖式中，採用了簡化的方式示意多個 訊號通過開關裝置的方式以及其中匯流排以及連接器的 連接關係。例如圖式中，匯流排2Q1 J^連接線來示意差 動訊號的傳輸線，而實作上可視需要新增其他訊號線。 又’上述以頻寬為4_Hz、1GHz或]1GHz的開關裝 置舉例，然而，並不以此為限。隨著各種標準及需求的發 展，例如USB 3.0之一模式最高能達到約5 Gbu/s的速 率，MHL的晝素資料最高可達到約3的速率。此技 術領域中通常知識者，可基於此示意圖及實施例之架構， 應用於各種實際的訊號及控制開關裝置之上，在實現各個 實施例時，對各種訊號線路作增加或戏少或結合。此外， 通常知識者亦可基於上述實施例，實施為各^不同的電子 裝置，如智慧型手機、平版電腦、多媒體播放器、個人數 位助理、數位相機及其他之可攜式裝置。故此，上述實施 例亦可涵蓋到各種可能的變化及實作方式，並不以上述文 201245969The TW6954PA switching device 220 passes the third signal S3 and causes the first switching device 210 to pass the third signal S3. For the method of FIG. 5B, for example, a processing unit (such as a central processing unit, a microcontroller, a digital signal processor) of the electronic device 5 receives a command, and controls the first control unit 530 to send a control signal. The first group of switching devices are controlled in accordance with steps S231 to S533. In another embodiment, the first control unit 530 performs the method of Figure 5B above. In an embodiment, the first control unit 530 can be a processing unit of the electronic device 5〇. The manner of implementing the 5A or 58 is not limited thereto, and can be implemented by referring to the other embodiments described above. In the above embodiments and drawings, a simplified manner is used to illustrate the manner in which a plurality of signals pass through the switching device and the connection relationship between the bus bars and the connectors therein. For example, in the figure, the bus 2Q1 J^ connection line is used to indicate the transmission line of the differential signal, and other signal lines need to be added for the actual operation. Further, the above-described switching device having a bandwidth of 4 Hz, 1 GHz or 1 GHz is exemplified, however, it is not limited thereto. With the development of various standards and requirements, for example, one mode of USB 3.0 can reach a rate of about 5 Gbu/s, and MHL can achieve a data rate of up to about 3. Those skilled in the art can apply to various actual signals and control switching devices based on the architecture of the schematic and the embodiments. When implementing various embodiments, various signal lines are added or reduced or combined. In addition, the general knowledge can also be implemented as various electronic devices, such as smart phones, lithographic computers, multimedia players, personal digital assistants, digital cameras, and other portable devices, based on the above embodiments. Therefore, the above embodiments can also cover various possible changes and implementation methods, not in the above-mentioned article 201245969
TW6954PA 義及圖式為限。 以上提供電子裝置中共用一匯流排之電路架構之實 施例，可讓多個訊號共享同一匯流排及連接器，並能維持 訊號品質。 綜上所述，雖然本發明已以實施例揭露如上，然其並 非用以限定本發明。本發明所屬技術領域中具有通常知識 者，在不脫離本發明之精神和範圍内，當可作各種之更動 與潤飾。因此，本發明之保護範圍當視後附之申請專利範 圍所界定者為準。 【圖式簡單說明】 第1圖繪示一高頻之切換裝置之頻率與增益關係圖。 第2A圖繪示一電子裝置中共用一匯流排之電路架構 之一實施例的示意圖。 第2B圖繪示在第2A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。 第3A圖繪示一電子裝置中共用一匯流排之電路架構 之另一實施例的示意圖，其中此電子裝置使用雙處理器。 第3B圖繪示在第3A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。 第4A圖繪示一電子裝置中共用一匯流排之電路架構 之又一實施例的示意圖。 第4B圖繪示在第4A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。 第5A圖繪示一電子裝置中共用一匯流排之電路架構 17 201245969 ’The TW6954PA is limited to the schema. The above provides an embodiment of a circuit structure sharing a bus in an electronic device, which allows multiple signals to share the same bus and connector and maintain signal quality. In summary, although the invention has been disclosed above by way of example, it is not intended to limit the invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. [Simple Description of the Drawing] Fig. 1 is a diagram showing the relationship between frequency and gain of a high frequency switching device. FIG. 2A is a schematic diagram showing an embodiment of a circuit structure sharing a bus bar in an electronic device. 2B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of FIG. 2A. FIG. 3A is a schematic diagram showing another embodiment of a circuit architecture sharing a bus bar in an electronic device, wherein the electronic device uses a dual processor. FIG. 3B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of FIG. 3A. FIG. 4A is a schematic diagram showing still another embodiment of a circuit structure sharing a bus bar in an electronic device. Fig. 4B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of Fig. 4A. FIG. 5A illustrates a circuit structure sharing a bus bar in an electronic device. 17 201245969 ’
TW6954PA 之又一實施例的示意圖。 第5B圖繪示在第5A圖之電子裝置中共用此匯流排 之方法之一實施例的流程圖。 【主要元件符號說明】 20、30、40 :電子裝置 100 :響應曲線 201 :資料匯流排 205 :連接器 210、220、320、410、420 :開關裝置 230、330、530 :第一控制單元 340 :第二控制單元 430 :控制單元 IN1、IN2 :輸入埠 〇UT1、〇UT2、OUT3 :輸出埠 CL1、CL2、CL3 :控制端 S1 第 一訊號 S2 第 二訊號 S3 第 三訊號 E1 第 一擴充訊號 S200、S220-S233 :步驟 S300、S320-S333、S340 :步驟 S400、S420-S433 :步驟 S533 :步驟A schematic diagram of yet another embodiment of TW6954PA. FIG. 5B is a flow chart showing an embodiment of a method of sharing the bus bar in the electronic device of FIG. 5A. [Main component symbol description] 20, 30, 40: electronic device 100: response curve 201: data bus 205: connector 210, 220, 320, 410, 420: switching device 230, 330, 530: first control unit 340 : second control unit 430: control unit IN1, IN2: input 埠〇 UT1, 〇 UT2, OUT3: output 埠 CL1, CL2, CL3: control terminal S1 first signal S2 second signal S3 third signal E1 first extended signal S200, S220-S233: Steps S300, S320-S333, S340: Steps S400, S420-S433: Step S533: Step
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| TW100115841A TWI448905B (en) | 2011-05-05 | 2011-05-05 | Electronic apparatus with circuit architecture for bus sharing |
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| US8837462B2 (en) * | 2008-12-15 | 2014-09-16 | Embraer S.A. | Switch usage for routing ethernet-based aircraft data buses in avionics systems |
| TWM377812U (en) * | 2009-02-23 | 2010-04-01 | Oriental Inst Technology | Plural video signals switching device |
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