TWI556650B - Bidirectional transmission apparatus - Google Patents
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Description
本發明係與訊號之雙向傳輸有關，特別是關於一種不需採用成本較高的專用IC即能實現半雙工控制訊號之雙向傳輸的雙向傳輸裝置。 The present invention relates to bidirectional transmission of signals, and more particularly to a bidirectional transmission apparatus capable of realizing bidirectional transmission of a half duplex control signal without using a costly dedicated IC.
一般而言，傳統的HDMI訊號延伸器(Extender)大多採用專用IC來解決雙向控制訊號無法補償的問題。其缺點是專用IC的成本過高，並且訊號補償係為固定的，較不具彈性。 In general, the traditional HDMI signal extender (Extender) mostly uses a dedicated IC to solve the problem that the two-way control signal cannot be compensated. The disadvantage is that the cost of the dedicated IC is too high, and the signal compensation is fixed and less flexible.
此外，傳統的HDMI訊號延伸器亦可採用時序(Timing)控制之方式透過致能控制腳位進行雙向訊號之收發控制。然而，由於時序控制較為困難且實現不易，一旦時序控制有誤時，訊號回授很可能會導致資料閂鎖(Latch)之問題。 In addition, the conventional HDMI signal extender can also use the Timing control method to control the transmission and output of the two-way signal through the enable control pin. However, since the timing control is difficult and the implementation is not easy, once the timing control is wrong, the signal feedback is likely to cause a problem of data latching.
因此，本發明提出一種雙向傳輸裝置，以解決先前技術所遭遇到之上述問題。 Accordingly, the present invention proposes a two-way transmission device to solve the above problems encountered in the prior art.
根據本發明之一具體實施例為一種雙向傳輸裝置。於此實施例中，雙向傳輸裝置包含第一運算器及第二運算器。第一運算器具有第一輸入端及第一輸出端。第二運算器具有第三輸入端、第四輸入端及第二輸出端。第二運算器之第三輸入端耦接第一運算器之第一輸入端。第二運算器之第四輸入端耦接第一運算器之第一輸出端。第二運算器之第四輸入端接收第一輸入訊號，並由其第二輸出端輸出第一輸出訊號。 A specific embodiment of the invention is a two-way transmission device. In this embodiment, the bidirectional transmission device includes a first operator and a second operator. The first operator has a first input and a first output. The second operator has a third input, a fourth input, and a second output. The third input end of the second computing unit is coupled to the first input end of the first computing unit. The fourth input end of the second computing unit is coupled to the first output end of the first computing unit. The fourth input end of the second computing unit receives the first input signal, and the second output end outputs the first output signal.
在一實施例中，當第一輸入訊號輸入至第二運算器時，第一輸入訊號即無法同時輸入至第一運算器。 In an embodiment, when the first input signal is input to the second operator, the first input signal cannot be simultaneously input to the first operator.
在一實施例中，第一運算器還具有第二輸入端。第二輸入 端耦接至接地端。 In an embodiment, the first operator also has a second input. Second input The end is coupled to the ground.
在一實施例中，第二運算器之第三輸入端及第四輸入端分別為一正輸入端及一負輸入端，第四輸入端所接收到之第一輸入訊號係具有正電壓，第二輸出端所輸出之第一輸出訊號係具有負電壓。 In an embodiment, the third input end and the fourth input end of the second computing unit are respectively a positive input end and a negative input end, and the first input signal received by the fourth input end has a positive voltage, The first output signal outputted by the two outputs has a negative voltage.
在一實施例中，雙向傳輸裝置進一步包含轉換單元。轉換單元耦接第二運算器之第二輸出端，用以將具有負電壓之第一輸出訊號轉換回具有正電壓之第一輸入訊號並輸出。 In an embodiment, the two-way transmission device further comprises a conversion unit. The conversion unit is coupled to the second output end of the second operator for converting the first output signal having a negative voltage back to the first input signal having a positive voltage and outputting.
在一實施例中，第一輸入訊號係為半雙工控制訊號。 In one embodiment, the first input signal is a half duplex control signal.
在一實施例中，半雙工控制訊號係為內部整合電路(Inter-Integrated Circuit,I2C)控制訊號、通用序列匯流排(Universal Serial Bus,USB)1.1控制訊號或通用序列匯流排2.0控制訊號。 In one embodiment, the half-duplex control signal is an Inter-Integrated Circuit (I 2 C) control signal, a Universal Serial Bus (USB) 1.1 control signal, or a Universal Sequence Bus 2.0 control. Signal.
在一實施例中，雙向傳輸裝置係應用於訊號延伸器(extender)內。訊號延伸器包含傳送模組、一對傳輸線及接收模組。該對傳輸線係耦接於傳送模組與接收模組之間。傳送模組及接收模組內分別設置有雙向傳輸裝置，傳送模組之雙向傳輸裝置的轉換單元係將第一輸入訊號輸出至該對傳輸線之其中一傳輸線，接收模組之雙向傳輸裝置係自該傳輸線接收第一輸入訊號。 In one embodiment, the two-way transmission device is used in a signal extender. The signal extender includes a transmission module, a pair of transmission lines, and a receiving module. The pair of transmission lines are coupled between the transmission module and the receiving module. The transmission module and the receiving module are respectively provided with a bidirectional transmission device, and the conversion unit of the bidirectional transmission device of the transmission module outputs the first input signal to one of the transmission lines of the pair of transmission lines, and the bidirectional transmission device of the receiving module is The transmission line receives the first input signal.
在一實施例中，於接收模組之雙向傳輸裝置中，第一運算器之第一輸入端自該傳輸線接收第一輸入訊號，並由第一輸出端輸出第一輸入訊號，同樣於第二運算器之第三輸入端自該傳輸線接收第一輸入訊號，且第四輸入端自第一運算器之第一輸出端接收第一輸入訊號，其中該第二運算器之第三輸入端及第四輸入端分別為一正輸入端及一負輸入端，因此該第二運算器之第二輸出端不會輸出任何訊號。 In an embodiment, in the bidirectional transmission device of the receiving module, the first input end of the first computing unit receives the first input signal from the transmission line, and outputs the first input signal from the first output end, and is similar to the second The third input end of the computing device receives the first input signal from the transmission line, and the fourth input end receives the first input signal from the first output end of the first computing unit, wherein the third input end of the second computing unit The four input terminals are a positive input terminal and a negative input terminal, so that the second output terminal of the second operator does not output any signal.
在一實施例中，該對傳輸纜係為CAT5纜線之一對雙絞線。 In one embodiment, the pair of transmission cables are one pair of twisted pairs of CAT5 cables.
在一實施例中，傳送模組係自一訊號來源裝置(例如影像輸入裝置)接收第一輸入訊號，並透過該對傳輸線之其中一傳輸線將該第一輸入訊號傳至接收模組，以供該接收模組將第一輸入訊號輸出至一訊號輸出裝置(例如影像輸出裝置)。該接收模組亦能自訊號輸出裝置接收一第二輸入訊號，並透過該對傳輸線之另一傳輸線將第二輸入訊號傳至傳送模組後輸 出至該訊號來源裝置。 In one embodiment, the transmitting module receives the first input signal from a source device (eg, an image input device), and transmits the first input signal to the receiving module through one of the pair of transmission lines. The receiving module outputs the first input signal to a signal output device (for example, an image output device). The receiving module can also receive a second input signal from the signal output device, and transmit the second input signal to the transmission module through another transmission line of the pair of transmission lines. Go to the source device.
在一實施例中，傳送模組係自一USB主控裝置接收第一輸入訊號，並透過一對傳輸線之其中一傳輸線將該第一輸入訊號傳至接收模組，以供接收模組將第一輸入訊號輸出至一USB受控裝置。該接收模組亦能自USB受控裝置接收一第二輸入訊號，並透過該對傳輸線之另一傳輸線將第二輸入訊號傳至傳送模組後輸出至USB主控裝置。 In one embodiment, the transmitting module receives the first input signal from a USB host device and transmits the first input signal to the receiving module through one of the pair of transmission lines for the receiving module to An input signal is output to a USB controlled device. The receiving module can also receive a second input signal from the USB controlled device, and transmit the second input signal to the transmitting module through another transmission line of the pair of transmission lines, and output the signal to the USB host device.
在一實施例中，雙向傳輸裝置係應用於訊號增強器(booster)內。訊號增強器包含傳送模組及接收模組。傳送模組及接收模組內分別設置有雙向傳輸裝置，傳送模組之雙向傳輸裝置的轉換單元耦接接收模組之雙向傳輸裝置的第一運算器之第一輸入端，接收模組之雙向傳輸裝置的轉換單元耦接傳送模組之雙向傳輸裝置的第一運算器之第一輸入端。 In one embodiment, the two-way transmission device is used in a signal booster. The signal booster includes a transmitting module and a receiving module. The transmission module and the receiving module are respectively provided with a bidirectional transmission device, and the conversion unit of the bidirectional transmission device of the transmission module is coupled to the first input end of the first computing device of the bidirectional transmission device of the receiving module, and the two-way receiving module The conversion unit of the transmission device is coupled to the first input end of the first operator of the bidirectional transmission device of the transmission module.
在一實施例中，於接收模組之雙向傳輸裝置中，第一運算器之第一輸入端自該對傳輸線之其中一傳輸線接收第一輸入訊號並由第一輸出端輸出第一輸入訊號，第二運算器之第三輸入端自該傳輸線接收第一輸入訊號，且第四輸入端自第一運算器之第一輸出端接收第一輸入訊號，其中該第二運算器之第三輸入端及第四輸入端分別為一正輸入端及一負輸入端，因此該第二運算器之第二輸出端不會輸出任何訊號。 In an embodiment, in the bidirectional transmission device of the receiving module, the first input end of the first computing unit receives the first input signal from one of the transmission lines of the pair of transmission lines and outputs the first input signal by the first output end, The third input end of the second computing unit receives the first input signal from the transmission line, and the fourth input end receives the first input signal from the first output end of the first computing unit, wherein the third input end of the second computing unit And the fourth input end is a positive input terminal and a negative input terminal respectively, so the second output end of the second computing device does not output any signal.
在一實施例中，傳送模組係自一訊號來源裝置接收第一輸入訊號，且接收模組係將第一輸入訊號輸出至一訊號輸出裝置，接收模組亦能自訊號輸出裝置接收一第二輸入訊號，並將第二輸入訊號傳至傳送模組後輸出至訊號來源裝置。 In one embodiment, the transmitting module receives the first input signal from a signal source device, and the receiving module outputs the first input signal to a signal output device, and the receiving module can receive the first signal from the signal output device. The second input signal is transmitted to the transmission module and output to the signal source device.
在一實施例中，雙向傳輸裝置進一步包含複數個訊號補償單元，分別耦接第一運算器之第一輸出端，以及耦接於第一運算器之第一輸入端與第二運算器之第三輸入端之間，用以進行訊號補償。 In an embodiment, the bidirectional transmission device further includes a plurality of signal compensation units coupled to the first output end of the first computing unit, and coupled to the first input end of the first computing unit and the second computing unit. Between the three inputs, for signal compensation.
相較於先前技術，根據本發明之雙向傳輸裝置具有下列優點： Compared to the prior art, the two-way transmission device according to the present invention has the following advantages:
(1)本發明之雙向傳輸裝置係以低成本之架構實現半雙工控制訊號之雙向傳輸，且雙向訊號輪流傳輸時不會相互干擾，故可改善先前技術需採用專用IC所導致之成本較高的問題。 (1) The two-way transmission device of the present invention realizes bidirectional transmission of a half-duplex control signal in a low-cost architecture, and the two-way signal does not interfere with each other when it is transmitted in turn, thereby improving the cost caused by the prior art using a dedicated IC. High problem.
(2)本發明之雙向傳輸裝置可應用於具有訊號延伸器或訊號增強器的訊號傳輸系統中，可透過增設訊號補償單元提供較高彈性之補償機制。 (2) The two-way transmission device of the present invention can be applied to a signal transmission system having a signal extender or a signal booster, and can provide a higher flexibility compensation mechanism by adding a signal compensation unit.
(3)由於本發明之雙向傳輸裝置不需藉由時序(Timing)控制之方式運作，可解決先前技術中一旦時序控制有誤時訊號回授所導致之資料閂鎖的問題。 (3) Since the bidirectional transmission device of the present invention does not need to be operated by Timing control, the problem of data latching caused by signal feedback when the timing control is wrong in the prior art can be solved.
關於本發明之優點與精神可以藉由以下的發明詳述及所附圖式得到進一步的瞭解。 The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.
1、2‧‧‧訊號傳輸系統 1, 2‧‧‧Signal transmission system
EXT‧‧‧訊號延伸器 EXT‧‧‧ signal extender
BST‧‧‧訊號增強器 BST‧‧‧ Signal Enhancer
TX‧‧‧傳送模組 TX‧‧‧Transmission Module
RX‧‧‧接收模組 RX‧‧‧ receiving module
10A、10B、20A、20B‧‧‧雙向傳輸裝置 10A, 10B, 20A, 20B‧‧‧ two-way transmission device
11、21‧‧‧訊號來源裝置 11, 21‧‧‧ Signal source device
12、22‧‧‧訊號輸出裝置 12, 22‧‧‧ signal output device
S1‧‧‧第一輸入訊號 S1‧‧‧ first input signal
S1’‧‧‧第一輸出訊號 S1’‧‧‧ first output signal
S2‧‧‧第二輸入訊號 S2‧‧‧ second input signal
S2’‧‧‧第二輸出訊號 S2’‧‧‧second output signal
100、104‧‧‧第一運算器 100, 104‧‧‧First Operator
102、106‧‧‧第二運算器 102, 106‧‧‧Secondary
103、107‧‧‧轉換單元 103, 107‧‧‧ conversion unit
L1~L2‧‧‧一對傳輸線 L1~L2‧‧‧A pair of transmission lines
+‧‧‧正輸入端 +‧‧‧正Input
-‧‧‧負輸入端 -‧‧‧negative input
101‧‧‧訊號補償單元 101‧‧‧Signal compensation unit
K1~K4‧‧‧輸出端 K1~K4‧‧‧ output
圖1係繪示根據本發明之一具體實施例之雙向傳輸裝置應用於訊號延伸器的示意圖。 1 is a schematic diagram of a two-way transmission device applied to a signal extender in accordance with an embodiment of the present invention.
圖2A係繪示訊號來源裝置透過訊號延伸器中之雙向傳輸裝置將第一輸入訊號傳送至訊號輸出裝置之示意圖。 2A is a schematic diagram showing the signal source device transmitting a first input signal to a signal output device through a bidirectional transmission device in the signal extender.
圖2B係繪示訊號輸出裝置透過訊號延伸器中之雙向傳輸裝置將第二輸入訊號傳送至訊號來源裝置之示意圖。 2B is a schematic diagram showing the signal output device transmitting the second input signal to the signal source device through the bidirectional transmission device in the signal extender.
圖2C係繪示雙向傳輸裝置內進一步設置有訊號補償單元之示意圖。 2C is a schematic diagram showing a signal compensation unit further disposed in the bidirectional transmission device.
圖3係繪示根據本發明之另一具體實施例之雙向傳輸裝置應用於訊號增強器的示意圖。 3 is a schematic diagram of a two-way transmission device applied to a signal booster according to another embodiment of the present invention.
根據本發明之一較佳具體實施例係為一種雙向傳輸裝置。於此實施例中，雙向傳輸裝置可應用於一訊號延伸器(extender)內，且訊號延伸器可應用於一訊號傳輸系統中，但不以此為限。請參照圖1，圖1係繪示此實施例中之雙向傳輸裝置應用於訊號延伸器的示意圖。 A preferred embodiment of the invention is a two-way transmission device. In this embodiment, the bidirectional transmission device can be applied to a signal extender, and the signal extender can be applied to a signal transmission system, but is not limited thereto. Please refer to FIG. 1. FIG. 1 is a schematic diagram showing the application of the bidirectional transmission device in this embodiment to a signal extender.
如圖1所示，於訊號傳輸系統1中，訊號延伸器EXT係耦接於訊號來源裝置11與訊號輸出裝置12之間。訊號延伸器EXT包含傳送模組TX、一對傳輸線L1~L2及接收模組RX。該對傳輸線L1~L2係耦接 於傳送模組TX與接收模組RX之間。傳送模組TX及接收模組RX內分別設置有雙向傳輸裝置10A及10B。於此實施例中，該對傳輸線L1~L2係為CAT5纜線所包含之四對雙絞線中之任一對雙絞線，但不以此為限。 As shown in FIG. 1 , in the signal transmission system 1 , the signal extender EXT is coupled between the signal source device 11 and the signal output device 12 . The signal extender EXT includes a transmission module TX, a pair of transmission lines L1 to L2, and a receiving module RX. The pair of transmission lines L1~L2 are coupled Between the transmission module TX and the receiving module RX. Two-way transmission devices 10A and 10B are provided in the transmission module TX and the reception module RX, respectively. In this embodiment, the pair of transmission lines L1 L L2 are any pair of twisted pairs of four pairs of twisted pairs included in the CAT5 cable, but are not limited thereto.
於實際應用中，訊號來源裝置11可以是任何能夠提供半雙工控制訊號之裝置，例如能夠提供內部整合電路(Inter-Integrated Circuit,I2C)控制訊號的影像來源裝置(如HDMI影音播放器)，或是能夠提供通用序列匯流排(Universal Serial Bus,USB)1.1控制訊號或通用序列匯流排2.0控制訊號的USB主控裝置；訊號輸出裝置12可以是任何能夠接收半雙工控制訊號之裝置，例如能夠接收內部整合電路(I2C)控制訊號的影像輸出裝置(如螢幕)，或是能夠接收通用序列匯流排1.1控制訊號或通用序列匯流排2.0控制訊號的USB受控裝置，但均不以此為限。 In practical applications, the signal source device 11 can be any device capable of providing a half-duplex control signal, such as an image source device capable of providing an Inter-Integrated Circuit (I 2 C) control signal (such as an HDMI video player). ), or a USB host device capable of providing a Universal Serial Bus (USB) 1.1 control signal or a Universal Serial Bus 2.0 control signal; the signal output device 12 can be any device capable of receiving a half-duplex control signal For example, an image output device (such as a screen) capable of receiving an internal integrated circuit (I 2 C) control signal, or a USB controlled device capable of receiving a general sequence bus 1.1 control signal or a universal serial bus 2.0 control signal, but both Not limited to this.
接著，請參照圖2A及圖2B，圖2A係繪示訊號來源裝置之第一輸入訊號透過訊號延伸器之雙向傳輸裝置傳輸至訊號輸出裝置之示意圖；圖2B係繪示訊號輸出裝置之第二輸入訊號透過訊號延伸器之雙向傳輸裝置傳輸至訊號來源裝置之示意圖。 2A and FIG. 2B, FIG. 2A is a schematic diagram showing the first input signal of the signal source device transmitted to the signal output device through the bidirectional transmission device of the signal extender; FIG. 2B is the second signal output device. A schematic diagram of the input signal transmitted to the signal source device through the bidirectional transmission device of the signal extender.
如圖2A所示，訊號來源裝置11提供第一輸入訊號S1至傳送模組TX，傳送模組TX中之雙向傳輸裝置10A會透過該對傳輸線之其中一傳輸線L1將第一輸入訊號S1輸出至接收模組RX中之雙向傳輸裝置10B，並由雙向傳輸裝置10B將第一輸入訊號S1輸出至訊號輸出裝置12。 As shown in FIG. 2A, the signal source device 11 provides a first input signal S1 to a transmission module TX. The bidirectional transmission device 10A in the transmission module TX outputs the first input signal S1 to one of the transmission lines L1 of the pair of transmission lines. The bidirectional transmission device 10B in the module RX is received, and the first input signal S1 is output to the signal output device 12 by the bidirectional transmission device 10B.
如圖2B所示，訊號輸出裝置12提供第二輸入訊號S2至接收模組RX，接收模組RX中之雙向傳輸裝置10B會透過該對傳輸線之另一傳輸線L2將第二輸入訊號S2輸出至傳送模組TX中之雙向傳輸裝置10A，並由雙向傳輸裝置10A將第二輸入訊號S2輸出至訊號來源裝置11。 As shown in FIG. 2B, the signal output device 12 provides the second input signal S2 to the receiving module RX. The two-way transmitting device 10B in the receiving module RX outputs the second input signal S2 through the other transmission line L2 of the pair of transmission lines. The bidirectional transmission device 10A in the transmission module TX, and the second input signal S2 is output from the bidirectional transmission device 10A to the signal source device 11.
需說明的是，由於第一輸入訊號S1係從訊號來源裝置11透過訊號延伸器EXT傳輸至訊號輸出裝置12，而第二輸入訊號S2係從訊號輸出裝置12透過訊號延伸器EXT傳輸至訊號來源裝置11，亦即第一輸入訊號S1之傳輸方向與第二輸入訊號S2之傳輸方向相反。 It should be noted that since the first input signal S1 is transmitted from the signal source device 11 through the signal extender EXT to the signal output device 12, the second input signal S2 is transmitted from the signal output device 12 through the signal extender EXT to the signal source. The transmission direction of the device 11, that is, the first input signal S1 is opposite to the transmission direction of the second input signal S2.
於此實施例中，第一輸入訊號S1與第二輸入訊號S2均具有正電壓，第一輸入訊號S1與第二輸入訊號S2均屬於半雙工控制訊號， 例如內部整合電路(I2C)控制訊號、通用序列匯流排(USB)1.1控制訊號或通用序列匯流排2.0控制訊號，但不以此為限。 In this embodiment, the first input signal S1 and the second input signal S2 both have a positive voltage, and the first input signal S1 and the second input signal S2 are both half-duplex control signals, such as an internal integrated circuit (I 2 C). Control signal, universal serial bus (USB) 1.1 control signal or universal serial bus 2.0 control signal, but not limited to this.
接下來，將分別透過圖2A及圖2B詳細說明訊號延伸器EXT如何透過雙向傳輸裝置10A及10B進行半雙工控制訊號的雙向傳輸。 Next, how the signal extender EXT performs bidirectional transmission of the half duplex control signal through the bidirectional transmission devices 10A and 10B will be described in detail with reference to FIGS. 2A and 2B, respectively.
如圖2A及圖2B所示，傳送模組TX中之雙向傳輸裝置10A包含第一運算器100、第二運算器102及轉換單元103。其中，第一運算器100具有正輸入端+、負輸入端-及輸出端K1；第二運算器102具有正輸入端+、負輸入端-及輸出端K2。第一運算器100的輸出端K1及第二運算器102的負輸入端-均耦接至訊號來源裝置11；第一運算器100的負輸入端-耦接至接地端；第一運算器100的正輸入端+耦接至傳輸線L2；第二運算器102的正輸入端+耦接至第一運算器100的正輸入端+；第二運算器102的輸出端K2耦接至轉換單元103；轉換單元103耦接至傳輸線L1。 As shown in FIG. 2A and FIG. 2B, the bidirectional transmission device 10A in the transmission module TX includes a first operator 100, a second operator 102, and a conversion unit 103. The first computing unit 100 has a positive input terminal +, a negative input terminal - and an output terminal K1; the second operator 102 has a positive input terminal +, a negative input terminal - and an output terminal K2. The output terminal K1 of the first computing unit 100 and the negative input terminal of the second computing device 102 are both coupled to the signal source device 11; the negative input terminal of the first computing device 100 is coupled to the ground terminal; the first computing device 100 The positive input terminal + is coupled to the transmission line L2; the positive input terminal + of the second operator 102 is coupled to the positive input terminal + of the first computing device 100; the output terminal K2 of the second computing device 102 is coupled to the conversion unit 103 The conversion unit 103 is coupled to the transmission line L1.
接收模組RX中之雙向傳輸裝置10B亦包含第一運算器104、第二運算器106及轉換單元107。其中，第一運算器104具有正輸入端+、負輸入端-及輸出端K3；第二運算器106具有正輸入端+、負輸入端-及輸出端K4。第一運算器104的輸出端K3及第二運算器106的負輸入端-均耦接至訊號輸出裝置12；第一運算器104的負輸入端-耦接至接地端；第一運算器104的正輸入端+耦接至傳輸線L1；第二運算器106的正輸入端+耦接至第一運算器104的正輸入端+；第二運算器106的輸出端K4耦接至轉換單元107；轉換單元107耦接至傳輸線L2。 The bidirectional transmission device 10B in the receiving module RX also includes a first operator 104, a second operator 106, and a conversion unit 107. The first operator 104 has a positive input terminal +, a negative input terminal - and an output terminal K3; the second operator 106 has a positive input terminal +, a negative input terminal - and an output terminal K4. The output terminal K3 of the first computing unit 104 and the negative input terminal of the second computing unit 106 are both coupled to the signal output device 12; the negative input terminal of the first computing device 104 is coupled to the ground terminal; the first computing device 104 The positive input terminal + is coupled to the transmission line L1; the positive input terminal + of the second operator 106 is coupled to the positive input terminal + of the first operator 104; the output terminal K4 of the second operator 106 is coupled to the conversion unit 107 The conversion unit 107 is coupled to the transmission line L2.
當訊號來源裝置11提供具有正電壓之第一輸入訊號S1至傳送模組TX時，如圖2A所示，第一輸入訊號S1會分別被傳送至雙向傳輸裝置10A中之第二運算器102的負輸入端-以及第一運算器100的輸出端K1。 When the signal source device 11 provides the first input signal S1 having a positive voltage to the transmission module TX, as shown in FIG. 2A, the first input signal S1 is respectively transmitted to the second operator 102 of the bidirectional transmission device 10A. The negative input terminal - and the output terminal K1 of the first operator 100.
需說明的是，由於具有正電壓之第一輸入訊號S1是被傳送至第一運算器100的輸出端K1，而非第一運算器100的正輸入端+或負輸入端-，所以第一運算器100並不會接收具有正電壓之第一輸入訊號S1。也就是說，當第一輸入訊號S1輸入至第二運算器102時，第一輸入訊 號S1即無法同時輸入至第一運算器100。此時，第一運算器100的正輸入端+並不會從傳輸線L2接收到任何輸入訊號，而其負輸入端-耦接至接地端，亦不會接收到任何輸入訊號。 It should be noted that since the first input signal S1 having a positive voltage is transmitted to the output terminal K1 of the first computing unit 100 instead of the positive input terminal + or the negative input terminal of the first computing device 100, the first The arithmetic unit 100 does not receive the first input signal S1 having a positive voltage. That is, when the first input signal S1 is input to the second computing unit 102, the first input signal The number S1 cannot be simultaneously input to the first operator 100. At this time, the positive input terminal + of the first computing unit 100 does not receive any input signal from the transmission line L2, and its negative input terminal - coupled to the ground terminal, does not receive any input signal.
至於第二運算器102，由於第二運算器102的負輸入端-接收到具有正電壓之第一輸入訊號S1，而其正輸入端+並不會接收到任何輸入訊號，因此，第二運算器102之輸出端K2會輸出具有負電壓之第一輸出訊號S1’至轉換單元103。其中，第一輸出訊號S1’與第一輸入訊號S1之電壓大小相同，兩者之差別僅在於正負電壓之不同。當轉換單元103接收到具有負電壓之第一輸出訊號S1’時，轉換單元103會將具有負電壓之第一輸出訊號S1’轉換回具有正電壓之第一輸入訊號S1，並將具有正電壓之第一輸入訊號S1輸出至傳輸線L1，以傳送至接收模組RX。 As for the second computing unit 102, since the negative input terminal of the second computing unit 102 receives the first input signal S1 having a positive voltage, and its positive input terminal + does not receive any input signal, the second operation The output terminal K2 of the device 102 outputs a first output signal S1' having a negative voltage to the conversion unit 103. The first output signal S1' has the same voltage as the first input signal S1, and the difference between the two is only the difference between the positive and negative voltages. When the converting unit 103 receives the first output signal S1' having a negative voltage, the converting unit 103 converts the first output signal S1' having a negative voltage back to the first input signal S1 having a positive voltage, and will have a positive voltage. The first input signal S1 is output to the transmission line L1 for transmission to the receiving module RX.
於實際應用中，轉換單元103可以是任何具有將負電壓轉換回正電壓之元件，例如P型金氧半場效電晶體(P-MOSFET)，但不以此為限。 In practical applications, the conversion unit 103 can be any component that has a negative voltage converted back to a positive voltage, such as a P-type MOSFET, but is not limited thereto.
當具有正電壓之第一輸入訊號S1透過傳輸線L1被傳送至接收模組RX時，第一輸入訊號S1會分別被傳送至接收模組RX中之雙向傳輸裝置10B之第一運算器104的正輸入端+及第二運算器106的正輸入端+。 When the first input signal S1 having a positive voltage is transmitted to the receiving module RX through the transmission line L1, the first input signal S1 is respectively transmitted to the first operator 104 of the bidirectional transmission device 10B in the receiving module RX. Input + and positive input + of second operator 106.
就第一運算器104而言，由於第一運算器104之正輸入端+接收到具有正電壓之第一輸入訊號S1且第一運算器104之負輸入端-耦接至接地端，第一運算器104之輸出端K3會輸出具有正電壓之第一輸入訊號S1並分別傳送至訊號輸出裝置12及第二運算器106的負輸入端-。 For the first computing unit 104, since the positive input terminal + of the first computing unit 104 receives the first input signal S1 having a positive voltage and the negative input terminal of the first computing device 104 is coupled to the ground, the first The output terminal K3 of the arithmetic unit 104 outputs a first input signal S1 having a positive voltage and is respectively transmitted to the negative input terminal of the signal output device 12 and the second operator 106.
需說明的是，當訊號輸出裝置12從第一運算器104之輸出端K3接收到具有正電壓之第一輸入訊號S1時，即代表訊號來源裝置11所輸出的具有正電壓之第一輸入訊號S1已順利透過傳送模組TX中之雙向傳輸裝置10A、傳輸線L1及接收模組RX中之雙向傳輸裝置10B被傳送至訊號輸出裝置12。 It should be noted that when the signal output device 12 receives the first input signal S1 having a positive voltage from the output terminal K3 of the first computing unit 104, it represents the first input signal with a positive voltage output by the signal source device 11. S1 has been successfully transmitted to the signal output device 12 through the bidirectional transmission device 10A in the transmission module TX, the transmission line L1, and the bidirectional transmission device 10B in the receiving module RX.
此外，就第二運算器106而言，由於第二運算器106之正輸入端+與負輸入端-所接收到的均是具有正電壓之第一輸入訊號S1， 第二運算器106將兩者相減之後彼此抵銷，因此，第二運算器106的輸出端K4並不會輸出任何訊號至轉換單元107。此時，轉換單元107不會輸出任何訊號至傳輸線L2，所以傳輸線L2也不會傳送任何訊號至傳送模組TX中之雙向傳輸裝置10A，藉此可有效避免習知技術中由於訊號回授所導致之資料閂鎖現象發生。 In addition, as for the second computing unit 106, since the positive input terminal + and the negative input terminal of the second computing unit 106 are received, the first input signal S1 having a positive voltage is received. The second operator 106 subtracts the two and cancels each other. Therefore, the output K4 of the second operator 106 does not output any signal to the conversion unit 107. At this time, the conversion unit 107 does not output any signal to the transmission line L2, so the transmission line L2 does not transmit any signal to the bidirectional transmission device 10A in the transmission module TX, thereby effectively avoiding the signal feedback mechanism in the prior art. The resulting data latch-up phenomenon occurred.
當訊號輸出裝置12提供具有正電壓之第二輸入訊號S2至接收模組RX時，如圖2B所示，第二輸入訊號S2會分別被傳送至雙向傳輸裝置10B中之第二運算器106的負輸入端-以及第一運算器104的輸出端K3。 When the signal output device 12 provides the second input signal S2 having a positive voltage to the receiving module RX, as shown in FIG. 2B, the second input signal S2 is respectively transmitted to the second operator 106 of the bidirectional transmission device 10B. The negative input - and the output K3 of the first operator 104.
需說明的是，由於具有正電壓之第二輸入訊號S2是被傳送至第一運算器104的輸出端K3，而非第一運算器104的正輸入端+或負輸入端-，所以第一運算器104並不會接收具有正電壓之第二輸入訊號S2。也就是說，當第二輸入訊號S2輸入至第二運算器106時，第二輸入訊號S2無法同時輸入至第一運算器104。此時，第一運算器104的正輸入端+並不會從傳輸線L1接收到任何輸入訊號，而其負輸入端-耦接至接地端，亦不會接收到任何輸入訊號。 It should be noted that since the second input signal S2 having a positive voltage is transmitted to the output terminal K3 of the first operator 104 instead of the positive input terminal + or the negative input terminal of the first operator 104, the first The arithmetic unit 104 does not receive the second input signal S2 having a positive voltage. That is, when the second input signal S2 is input to the second computing unit 106, the second input signal S2 cannot be simultaneously input to the first computing unit 104. At this time, the positive input terminal + of the first computing unit 104 does not receive any input signal from the transmission line L1, and its negative input terminal - coupled to the ground terminal, does not receive any input signal.
至於第二運算器106，由於第二運算器106的負輸入端-接收到具有正電壓之第二輸入訊號S2，而其正輸入端+並不會從傳輸線L1接收到任何輸入訊號，因此，第二運算器106之輸出端K4會輸出具有負電壓之第二輸出訊號S2’至轉換單元107。其中，第二輸出訊號S2’與第二輸入訊號S2之電壓大小相同，兩者之差別僅在於正負電壓之不同。當轉換單元107接收到具有負電壓之第二輸出訊號S2’時，轉換單元107會將具有負電壓之第二輸出訊號S2’轉換回具有正電壓之第二輸入訊號S2，並將具有正電壓之第二輸入訊號S2輸出至傳輸線L2，以傳送至傳送模組TX。 As for the second operator 106, since the negative input terminal of the second computing unit 106 receives the second input signal S2 having a positive voltage, and its positive input terminal + does not receive any input signal from the transmission line L1, therefore, The output terminal K4 of the second operator 106 outputs a second output signal S2' having a negative voltage to the conversion unit 107. The voltage of the second output signal S2' and the second input signal S2 are the same, and the difference between the two is only the difference between the positive and negative voltages. When the converting unit 107 receives the second output signal S2' having a negative voltage, the converting unit 107 converts the second output signal S2' having a negative voltage back to the second input signal S2 having a positive voltage, and will have a positive voltage. The second input signal S2 is output to the transmission line L2 for transmission to the transmission module TX.
於實際應用中，轉換單元107可以是任何具有將負電壓轉換回正電壓之元件，例如P型金氧半場效電晶體(P-MOSFET)，但不以此為限。 In practical applications, the conversion unit 107 can be any component that has a negative voltage converted back to a positive voltage, such as a P-type MOSFET, but is not limited thereto.
當具有正電壓之第二輸入訊號S2透過傳輸線L2被傳送至傳送模組TX時，第二輸入訊號S2會分別被傳送至傳送模組TX中之雙向 傳輸裝置10A之第一運算器100的正輸入端+及第二運算器102的正輸入端+。 When the second input signal S2 having a positive voltage is transmitted to the transmission module TX through the transmission line L2, the second input signal S2 is respectively transmitted to the two-way in the transmission module TX. The positive input terminal + of the first operator 100 of the transmission device 10A and the positive input terminal + of the second operator 102.
就第一運算器100而言，由於第一運算器100之正輸入端+接收到具有正電壓之第二輸入訊號S2且第一運算器100之負輸入端-耦接至接地端，第一運算器100之輸出端K1會輸出具有正電壓之第二輸入訊號S2並分別傳送至訊號來源裝置11及第二運算器102的負輸入端-。 For the first computing unit 100, since the positive input terminal + of the first computing device 100 receives the second input signal S2 having a positive voltage and the negative input terminal of the first computing device 100 is coupled to the ground, the first The output terminal K1 of the computing unit 100 outputs a second input signal S2 having a positive voltage and is respectively transmitted to the negative input terminal of the signal source device 11 and the second operator 102.
需說明的是，當訊號來源裝置11從第一運算器100之輸出端K1接收到具有正電壓之第二輸入訊號S2時，即代表訊號輸出裝置12所輸出的具有正電壓之第二輸入訊號S2已順利透過接收模組RX中之雙向傳輸裝置10B、傳輸線L2及傳送模組TX中之雙向傳輸裝置10A被傳送至訊號來源裝置11。 It should be noted that when the signal source device 11 receives the second input signal S2 with a positive voltage from the output terminal K1 of the first computing device 100, it represents the second input signal with a positive voltage output by the signal output device 12. S2 has been successfully transmitted to the signal source device 11 through the bidirectional transmission device 10B in the receiving module RX, the transmission line L2, and the bidirectional transmission device 10A in the transmission module TX.
此外，就第二運算器102而言，由於第二運算器102之正輸入端+與負輸入端-所接收到的均是具有正電壓之第二輸入訊號S2，第二運算器102將兩者相減之後彼此抵銷，因此，第二運算器102的輸出端K2並不會輸出任何訊號至轉換單元103。此時，轉換單元103不會輸出任何訊號至傳輸線L1，所以傳輸線L1也不會傳送任何訊號至接收模組RX中之雙向傳輸裝置10B，藉此可有效避免習知技術中由於訊號回授所導致之資料閂鎖現象發生。 In addition, in terms of the second computing unit 102, since the positive input terminal + and the negative input terminal of the second computing device 102 are both received a second input signal S2 having a positive voltage, the second computing device 102 will After the subtraction, the offsets are offset from each other. Therefore, the output terminal K2 of the second computing unit 102 does not output any signal to the conversion unit 103. At this time, the conversion unit 103 does not output any signal to the transmission line L1, so the transmission line L1 does not transmit any signal to the bidirectional transmission device 10B in the receiving module RX, thereby effectively avoiding the signal feedback mechanism in the prior art. The resulting data latch-up phenomenon occurred.
透過圖2A、圖2B及上述實施例可知：透過設置於訊號延伸器EXT之傳送模組TX中之雙向傳輸裝置10A、設置於訊號延伸器EXT之接收模組RX中之雙向傳輸裝置10B以及一對傳輸線L1~L2，訊號來源裝置11所輸出的具有正電壓之第一輸入訊號S1可順利傳送至訊號輸出裝置12，而訊號輸出裝置12所輸出的具有正電壓之第二輸入訊號S2亦可順利傳送至訊號來源裝置11，藉以實現半雙工控制訊號的雙向傳輸。 2A, FIG. 2B and the above embodiment, the bidirectional transmission device 10A disposed in the transmission module TX of the signal extender EXT, the bidirectional transmission device 10B disposed in the receiving module RX of the signal extender EXT, and a For the transmission lines L1 L L2, the first input signal S1 having a positive voltage outputted by the signal source device 11 can be smoothly transmitted to the signal output device 12, and the second input signal S2 having a positive voltage outputted by the signal output device 12 can also be Smooth transmission to the signal source device 11 for bidirectional transmission of the half duplex control signal.
此外，由於訊號來源裝置11所輸出的第一輸入訊號S1需經過傳送模組TX中之雙向傳輸裝置10A及傳輸線L1之長距離傳輸後才會被傳送至接收模組RX，訊號輸出裝置12所輸出的第二輸入訊號S2亦需經過接收模組RX中之雙向傳輸裝置10B及傳輸線L2之長距離傳輸後才會被傳送至傳送模組TX，導致第一輸入訊號S1及第二輸入訊號S2之訊號 強度可能會有所衰減，因此，傳送模組TX中之雙向傳輸裝置10A及接收模組RX中之雙向傳輸裝置10B可進一步設置有訊號補償單元，用以對第一輸入訊號S1及第二輸入訊號S2進行訊號補償。 In addition, the first input signal S1 outputted by the signal source device 11 is transmitted to the receiving module RX after being transmitted over the long distance of the bidirectional transmission device 10A and the transmission line L1 in the transmission module TX, and the signal output device 12 The output second input signal S2 is also transmitted to the transmission module TX after being transmitted over the long distance of the two-way transmission device 10B and the transmission line L2 in the receiving module RX, resulting in the first input signal S1 and the second input signal S2. Signal The strength may be attenuated. Therefore, the bidirectional transmission device 10A in the transmission module TX and the bidirectional transmission device 10B in the receiving module RX may further be provided with a signal compensation unit for the first input signal S1 and the second input. Signal S2 performs signal compensation.
舉例而言，如圖2C所示，雙向傳輸裝置10A中之訊號補償單元101可耦接於第一運算器100之正輸入端+與第二運算器102之正輸入端+之間，以及耦接第一運算器100之輸出端K1，用以對第二輸入訊號S2進行訊號補償；雙向傳輸裝置10B中之訊號補償單元101可耦接於第一運算器104之正輸入端+與第二運算器106之正輸入端+之間，以及耦接第一運算器104之輸出端K3，用以對第一輸入訊號S1進行訊號補償。 For example, as shown in FIG. 2C, the signal compensation unit 101 in the bidirectional transmission device 10A can be coupled between the positive input terminal of the first computing device 100 and the positive input terminal + of the second computing device 102, and coupled. The output terminal K1 of the first computing device 100 is configured to perform signal compensation on the second input signal S2. The signal compensation unit 101 in the bidirectional transmission device 10B can be coupled to the positive input terminal + and the second of the first computing device 104. The positive input terminal + of the computing unit 106 is coupled to the output terminal K3 of the first computing unit 104 for signal compensation of the first input signal S1.
於實際應用中，訊號補償單元101可包含電阻元件及電容元件等元件所構成之電路，但不以此為限。 In a practical application, the signal compensation unit 101 may include a circuit composed of a resistor element and a capacitor element, but is not limited thereto.
綜上所述，本發明提出之應用於訊號延伸器EXT內的雙向傳輸裝置10A及10B不僅能夠以低成本之架構實現半雙工控制訊號之雙向傳輸，並且不需藉由時序(Timing)控制之方式即可使得雙向訊號輪流傳輸時不會相互衝突及干擾，亦可避免一旦時序控制有誤時訊號回授所導致之資料閂鎖現象發生。 In summary, the bidirectional transmission devices 10A and 10B applied to the signal extender EXT according to the present invention can realize bidirectional transmission of the half duplex control signal in a low cost architecture, and does not need to be controlled by Timing. In this way, the two-way signals can be transmitted without any conflict and interference, and the data latching phenomenon caused by the signal feedback when the timing control is incorrect can be avoided.
根據本發明之另一較佳具體實施例亦為一種雙向傳輸裝置。於此實施例中，雙向傳輸裝置可應用於一訊號增強器(booster)內，但不以此為限。請參照圖3，圖3係繪示此實施例中之雙向傳輸裝置應用於訊號增強器的示意圖。 Another preferred embodiment of the present invention is also a two-way transmission device. In this embodiment, the two-way transmission device can be applied to a signal booster, but is not limited thereto. Please refer to FIG. 3. FIG. 3 is a schematic diagram showing the application of the bidirectional transmission device in this embodiment to a signal booster.
如圖3所示，於訊號傳輸系統2中，訊號增強器BST係耦接於訊號來源裝置21與訊號輸出裝置22之間。訊號增強器BST包含彼此耦接的傳送模組TX及接收模組RX。傳送模組TX及接收模組RX內分別設置有雙向傳輸裝置20A及20B。雙向傳輸裝置20A及20B彼此耦接。 As shown in FIG. 3, in the signal transmission system 2, the signal booster BST is coupled between the signal source device 21 and the signal output device 22. The signal booster BST includes a transmission module TX and a receiving module RX coupled to each other. Two-way transmission devices 20A and 20B are provided in the transmission module TX and the reception module RX, respectively. The two-way transmission devices 20A and 20B are coupled to each other.
需說明的是，不同於前一個實施例中之訊號延伸器EXT的傳送模組TX與接收模組RX之間距離較遠需透過CAT5纜線進行訊號之傳輸，此實施例中之傳送模組TX與接收模組RX係設置於訊號增強器BST內彼此相鄰，故僅需透過常見的線路耦接即可。 It should be noted that, unlike the transmission module TX of the signal extender EXT in the previous embodiment, the distance between the transmission module TX and the receiving module RX is relatively long, and the signal transmission is performed through the CAT5 cable. The transmission module in this embodiment The TX and the receiving module RX are disposed adjacent to each other in the signal booster BST, so that only the common line coupling is required.
於實際應用中，訊號來源裝置21可以是任何能夠提供半雙 工控制訊號之裝置，例如能夠提供內部整合電路(I2C)控制訊號的影像來源裝置或是能夠提供通用序列匯流排(USB)1.1控制訊號或通用序列匯流排2.0控制訊號的USB主控裝置；訊號輸出裝置22可以是任何能夠接收半雙工控制訊號之裝置，例如能夠接收內部整合電路(I2C)控制訊號的影像輸出裝置或是能夠接收通用序列匯流排1.1控制訊號或通用序列匯流排2.0控制訊號的USB受控裝置，但均不以此為限。 In practical applications, the signal source device 21 can be any device capable of providing a half-duplex control signal, such as an image source device capable of providing internal integrated circuit (I 2 C) control signals or capable of providing a universal serial bus (USB). 1.1 Control signal or universal serial bus 2.0 control signal USB master device; signal output device 22 can be any device capable of receiving half-duplex control signals, such as image output capable of receiving internal integrated circuit (I 2 C) control signals The device is either a USB controlled device capable of receiving a general sequence bus 1.1 control signal or a universal sequence bus 2.0 control signal, but is not limited thereto.
於此實施例中，透過設置於訊號增強器BST之傳送模組TX中之雙向傳輸裝置20A以及設置於訊號增強器BST之接收模組RX中之雙向傳輸裝置20B，訊號來源裝置21所輸出的輸入訊號可順利傳送至訊號輸出裝置22，而訊號輸出裝置22所輸出的另一輸入訊號亦可順利傳送至訊號來源裝置21，藉以實現半雙工控制訊號的雙向傳輸。 In this embodiment, the bidirectional transmission device 20A disposed in the transmission module TX of the signal booster BST and the bidirectional transmission device 20B disposed in the receiving module RX of the signal booster BST are output by the signal source device 21. The input signal can be smoothly transmitted to the signal output device 22, and the other input signal outputted by the signal output device 22 can be smoothly transmitted to the signal source device 21, thereby realizing the bidirectional transmission of the half duplex control signal.
至於設置於傳送模組TX及接收模組RX內之雙向傳輸裝置20A及20B的電路結構示意圖，由於雙向傳輸裝置20A及20B之電路結構及實際操作情況與前述雙向傳輸裝置10A及10B類似，故亦請參照圖2A及圖2B所示之雙向傳輸裝置10A及10B及其相關敘述，於此不另行贅述。同樣地，訊號增強器BST內亦可設置訊號補償單元，亦請參照圖2C所示及其相關敘述，於此不另行贅述。 For the circuit configuration diagrams of the bidirectional transmission devices 20A and 20B disposed in the transmission module TX and the reception module RX, since the circuit configurations and actual operation conditions of the bidirectional transmission devices 20A and 20B are similar to those of the bidirectional transmission devices 10A and 10B, Please also refer to the two-way transmission devices 10A and 10B shown in FIG. 2A and FIG. 2B and related descriptions, and details are not described herein. Similarly, the signal compensation unit may be disposed in the signal booster BST. Please refer to FIG. 2C and related descriptions, and details are not described herein.
相較於先前技術，根據本發明之雙向傳輸裝置具有下列優點： Compared to the prior art, the two-way transmission device according to the present invention has the following advantages:
(1)本發明之雙向傳輸裝置係以低成本之架構實現半雙工控制訊號之雙向傳輸，且雙向訊號輪流傳輸時不會相互干擾，故可改善先前技術需採用專用IC所導致之成本較高的問題。 (1) The two-way transmission device of the present invention realizes bidirectional transmission of a half-duplex control signal in a low-cost architecture, and the two-way signal does not interfere with each other when it is transmitted in turn, thereby improving the cost caused by the prior art using a dedicated IC. High problem.
(2)本發明之雙向傳輸裝置可應用於具有訊號延伸器或訊號增強器的訊號傳輸系統中，並可透過增設訊號補償單元提供高彈性之補償機制。 (2) The two-way transmission device of the present invention can be applied to a signal transmission system having a signal extender or a signal booster, and can provide a high elasticity compensation mechanism through the addition of a signal compensation unit.
(3)由於本發明之雙向傳輸裝置不需藉由時序控制之方式運作，可解決先前技術中一旦時序控制有誤時訊號回授所導致之資料閂鎖之問題。 (3) Since the bidirectional transmission device of the present invention does not need to be operated by the timing control, the problem of data latching caused by signal feedback when the timing control is wrong in the prior art can be solved.
藉由以上較佳具體實施例之詳述，係希望能更加清楚描 述本發明之特徵與精神，而並非以上述所揭露的較佳具體實施例來對本發明之範疇加以限制。相反地，其目的是希望能涵蓋各種改變及具相等性的安排於本發明所欲申請之專利範圍的範疇內。 With the detailed description of the above preferred embodiments, it is hoped that the description will be more clearly described. The scope and spirit of the present invention is not limited by the preferred embodiments disclosed herein. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.
EXT‧‧‧訊號延伸器 EXT‧‧‧ signal extender
TX‧‧‧傳送模組 TX‧‧‧Transmission Module
RX‧‧‧接收模組 RX‧‧‧ receiving module
10A、10B‧‧‧雙向傳輸裝置 10A, 10B‧‧‧ two-way transmission device
11‧‧‧訊號來源裝置 11‧‧‧Signal source device
12‧‧‧訊號輸出裝置 12‧‧‧Signal output device
S1‧‧‧第一輸入訊號 S1‧‧‧ first input signal
S1’‧‧‧第一輸出訊號 S1’‧‧‧ first output signal
100、104‧‧‧第一運算器 100, 104‧‧‧First Operator
102、106‧‧‧第二運算器 102, 106‧‧‧Secondary
103、107‧‧‧轉換單元 103, 107‧‧‧ conversion unit
L1~L2‧‧‧一對傳輸線 L1~L2‧‧‧A pair of transmission lines
+‧‧‧正輸入端 +‧‧‧正Input
-‧‧‧負輸入端 -‧‧‧negative input
K1~K4‧‧‧輸出端 K1~K4‧‧‧ output
Claims (17)
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| US3889072A (en) * | 1973-10-19 | 1975-06-10 | Itt | Bi-directional amplification apparatus |
| US6275066B1 (en) * | 1999-04-14 | 2001-08-14 | Pohang University Of Science And Technology Foundation | Current-mode bidirectional input/output buffer for impedance matching |
| EP2091252A1 (en) * | 2006-11-07 | 2009-08-19 | Sony Corporation | Communication system, transmitting device, receiving device, communication method, program and communication cable |
| TW201351900A (en) * | 2012-06-12 | 2013-12-16 | Silicon Image Inc | Simultaneous transmission of clock and bidirectional data over a communication channel |
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