CN216057238U - Video interface converter - Google Patents
Video interface converter Download PDFInfo
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- CN216057238U CN216057238U CN202122507160.3U CN202122507160U CN216057238U CN 216057238 U CN216057238 U CN 216057238U CN 202122507160 U CN202122507160 U CN 202122507160U CN 216057238 U CN216057238 U CN 216057238U
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Abstract
The application discloses video interface converter, including change over switch circuit, conversion switching circuit, first video connection interface, second video connection interface, first video switching interface converting circuit and second video interface converting circuit. The conversion switching circuit is used for responding to the first switching electric signal or the second switching electric signal sent by the switching circuit and outputting the video signal input by the first video connection interface or the second video connection interface through the second video connection interface or the first video connection interface. Wherein the types of the first video connection interface and the second video connection interface are different. Because the video interface converter can realize the interconversion of the video connection interfaces of two different types through the change-over switch circuit, make the video interface converter support the bidirectional transmission, reduce the number of times of inserting and pulling out of the video interface converter, in order to lengthen the life-span of the video interface converter, and then improve the physical examination of users.
Description
Technical Field
The application relates to the technical field of computer peripherals, in particular to a video interface converter.
Background
Devices such as televisions, set-top boxes, video conference terminals, and computer peripherals are generally equipped with various video interfaces, and the video interfaces mainly function to transmit video signals between two electronic devices, specifically, to output video signals to external devices or collect externally acquired video signals. With the continuous development of video technology, people adopt various types of video interfaces such as miniHDMI interface, standard HDMI interface, DP interface, VGA interface, DVI interface and the like in order to present high-definition and high-quality video. At the same time, the role of video interfaces is constantly being enriched. Due to the increase of the types of the video interfaces, the electronic device can be configured with different video interfaces according to different actual requirements, and when video signals of two electronic devices configured with different video interfaces need to be transmitted, the video interface converter is required to be adapted, and the video converters in the prior art are all unidirectional, such as an HDMI-to-DP video interface, a DP-to-HDMI video interface, and the like. When the video signals of two electronic devices with different video interfaces need to be transmitted mutually, two video interface converters are needed, and because each video interface is unidirectional, when the transmission direction of the video signals changes, the video interface converters need to be replaced, and the types and directions of the video interfaces need to be considered when the video signals are plugged. That is, the existing video interface can only transmit in one direction, and thus, the existing technology still needs to be improved and developed.
Disclosure of Invention
The application provides a video interface converter to solve the technical problem that the video interface converter only supports one-way transmission in the prior art.
In a first aspect, a video interface converter includes a switch circuit, a conversion switching circuit, a first video connection interface, a second video connection interface, a first video adapter interface conversion circuit, and a second video interface conversion circuit; the video interface converter is used for outputting the video signal input by the first video connection interface through the second video connection interface or outputting the video signal input by the second video connection interface through the first video connection interface; wherein the first video connection interface and the second video connection interface are of different types;
the switching switch circuit is connected with the conversion switching circuit; the switching circuit is used for sending a first switching electric signal or a second switching electric signal to the switching circuit;
the conversion switching circuit is respectively connected with the first video switching interface conversion circuit, the second video interface conversion circuit, the first video connection interface and the second video connection interface; the switching circuit is used for responding to the first switching electric signal to connect the first video switching interface switching circuit between the first video connection interface and the second video connection interface; the switching circuit is also used for responding to the second switching electric signal to connect the second video switching interface switching circuit between the first video connecting interface and the second video connecting interface;
the first video adapter conversion circuit is connected between the first video connection interface and the second video connection interface, and is used for converting the video signal input by the first video connection interface into a video signal conforming to the second video connection interface and then outputting the video signal through the second video connection interface;
the second video adapter switching circuit is connected between the first video connection interface and the second video connection interface, and is used for converting the video signal input by the second video connection interface into the video signal conforming to the first video connection interface and then outputting the video signal through the first video connection interface.
In one embodiment, the switching circuit includes a first interface connection circuit and a second interface connection circuit;
the first interface connecting circuit is respectively connected with the switching switch circuit, the first video connecting interface and the first video interface conversion circuit; the first interface connection circuit is used for receiving the first switching power signal sent by the switching circuit and responding to the first switching power signal to connect the first video connection interface and the first video interface conversion circuit;
the second interface connecting circuit is respectively connected with the switching switch circuit, the second video connecting interface and the first video interface conversion circuit; the first interface connection circuit is used for receiving the first switching power signal sent by the switching circuit and responding to the first switching power signal to connect the second video connection interface and the first video interface conversion circuit.
In one embodiment, the first interface connection circuit is further connected to the second video interface conversion circuit; the first interface connection circuit is used for receiving the second switching electric signal sent by the switching circuit and responding to the second switching electric signal to connect the first video connection interface and the second video interface conversion circuit;
the second interface connection circuit is also connected with the second video interface conversion circuit; the second interface connection circuit is used for receiving the second switching electric signal sent by the switch circuit and responding to the second switching electric signal to connect the second video connection interface and the second video interface conversion circuit.
In one embodiment, the first interface circuit includes a resistor R11, a resistor R12, and a chip U1;
the chip U1 comprises a first group of data line connection terminals, a second group of data line connection terminals, a third group of data line connection terminals, a first enable control terminal SEL1 and a second enable control terminal SEL 2; a first group of data line connecting ends of the chip U1 are connected with the first video interface, a second group of data line connecting ends of the chip U1 are connected with the first video interface conversion circuit, and a third group of data connecting ends of the chip U1 are connected with the second video interface conversion circuit;
one end of the resistor R11 is connected to the first enable control terminal SEL1, and the other end is used for receiving an input of a preset voltage source DP 10;
one end of the resistor R12 is connected with the second enable control terminal SEL2, and the other end of the resistor R12 is grounded;
the second enable control terminal SEL2 is also used for being connected with the switch circuit to receive the input of the first switching electric signal or the second switching electric signal;
when the second enable control terminal SEL2 receives the first switching signal, connecting a first group of data line connection terminals and a second group of data line connection terminals of the chip U1; when the second enable control terminal SEL2 receives the second switching electrical signal, the first and third sets of data line connection terminals of the chip U1 are connected.
In one embodiment, the second interface circuit includes a resistor R21, a resistor R22, and a chip U2;
the chip U2 comprises a first group of data line connection terminals, a second group of data line connection terminals, a third enable control terminal SEL3 and a fourth enable control terminal SEL 4; the first group of data line connecting ends of the chip U2 are connected with the second video interface, the second group of data line connecting ends of the chip U2 are connected with the first video interface conversion circuit, and the third group of data connecting ends of the chip U2 are connected with the second video interface conversion circuit;
one end of the resistor R21 is connected with the third enable control terminal SEL3, and the other end of the resistor R21 is used for inputting a preset voltage source DP 20;
one end of the resistor R22 is connected with the fourth enable control terminal SEL4, and the other end of the resistor R22 is grounded;
the fourth enable control terminal SEL4 is also used for being connected with the switch circuit for the input of the first switching electric signal or the second switching electric signal;
when the fourth enable control terminal SEL4 receives the first switching signal, connecting a first group of data line connection terminals and a second group of data line connection terminals of the chip U2; when the fourth enable control terminal SEL4 receives the second switching electrical signal, the first and third sets of data line connection terminals of the chip U2 are connected.
In one embodiment, the chip U1 has a model number TS3DV 642; the chip U2 has a model number TS3DV 642.
In one embodiment, the first video connection interface comprises a DP interface; the second video connection interface comprises an HDMI interface;
the first video interface conversion circuit comprises a DP-to-HDMI chip;
the second video interface conversion circuit comprises an HDMI to DP chip.
In one embodiment, the switch circuit comprises a resistor R31, a resistor R32, a resistor R33, a dual-row toggle switch K1, a connection terminal SW1 and a connection terminal SW 2;
a connection terminal SW1 of the changeover switch circuit is connected to the second enable control terminal SEL2, and a connection terminal SW2 of the changeover switch circuit is connected to the fourth enable control terminal SEL 4;
the double-row toggle switch K1 comprises a first input end, a second input end, a first output end, a second output end, a third output end and a fourth output end; the first input end and the second input end of the double-row toggle switch K1 are electrically connected; the first input end and the second input end of the double-row toggle switch K1 are synchronously connected with the first output end and the third output end or synchronously connected with the second output end and the fourth output end;
one end of the resistor R31 is used for receiving the input of a preset voltage source DP30, and the other end of the resistor R31 is connected with the first input end of the double-row toggle switch K1;
the first output end of the double-row toggle switch K1 is connected with the connecting end SW1 of the change-over switch circuit;
one end of the resistor R32 is connected with the second output end of the double-row toggle switch K1, and the other end of the resistor R32 is grounded;
one end of the resistor R33 is connected with the third output end of the double-row toggle switch K1, and the other end of the resistor R33 is grounded;
and the fourth output end of the double-row toggle switch K1 is connected with the connecting end SW2 of the change-over switch circuit.
In one embodiment, the video display device further comprises an external power circuit, wherein the external power circuit is connected with the first video interface conversion circuit, the second video interface conversion circuit and the conversion switching circuit; the external power supply circuit is used for supplying power to the first video interface conversion circuit, the second video interface conversion circuit and the conversion switching circuit.
In one embodiment, the external power circuit comprises a USB-C interface and a DC/DC conversion circuit;
the USB-C interface is used for receiving the input of an external voltage source of a USB interface;
the DC/DC conversion circuit is connected with the USB-C interface and is used for converting the direct current power supply signal input by the USB-C interface into a voltage source DP10, a voltage source DP20 and a voltage source DP 30.
The video interface converter according to the above embodiment includes a switch circuit, a conversion switching circuit, a first video connection interface, a second video connection interface, a first video adapter interface conversion circuit, and a second video interface conversion circuit. Because the video interface converter can realize the interconversion of the video connection interfaces of two different types through the change-over switch circuit, make the video interface converter support the bidirectional transmission, reduce the number of times of inserting and pulling out of the video interface converter, in order to lengthen the life-span of the video interface converter, and then improve the physical examination of users.
Drawings
FIG. 1 is a schematic diagram of the structure of a video interface converter in an embodiment;
FIG. 2 is a schematic diagram of a switch circuit in an embodiment;
FIG. 3 is a schematic diagram of a structure of a switching circuit in an embodiment;
FIG. 4 is a schematic circuit diagram of a switching circuit for implementing the present invention;
FIG. 5 is a schematic circuit diagram of a switch circuit in an embodiment;
FIG. 6 is a schematic circuit diagram of a switch circuit in one embodiment;
FIG. 7 is a schematic diagram of the circuit connections of an external power circuit in one implementation.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The embodiment of the application discloses a video interface converter, first switching electric signal or second switching electric signal that the video connection interface to two different grade types sent through the change over switch circuit, first video switching interface converting circuit or second video interface converting circuit is switched and connected, make the transmission of two-way video signal source be supported to the video interface converter, use the directionality that this video interface converter need not pay attention to the interface, and whatever kind of situation only needs same converter to realize, reduce the number of times of inserting and pulling out of video interface converter, with the life-span of extension video interface converter, and then improve the physical examination user.
Example one
Referring to fig. 1, a schematic diagram of a structural connection of a video interface converter in an implementation is shown, where the video interface converter includes a switch circuit 1, a conversion switching circuit 2, a first video connection interface 3, a second video connection interface 4, a first video adapter conversion circuit 5, and a second video interface conversion circuit 6. The video interface converter is used for outputting the video signal input by the first video connection interface 3 through the second video connection interface 4, or outputting the video signal input by the second video connection interface 4 through the first video connection interface 3. Wherein the first video connection interface 3 and the second video connection interface 4 are of different types. The switch circuit 1 is connected to the switching circuit 2, and the switch circuit 1 is configured to send a first switching electrical signal or a second switching electrical signal to the switching circuit 2. The conversion switching circuit 2 is respectively connected with the first video conversion interface conversion circuit 5, the second video interface conversion circuit 6, the first video connection interface 3 and the second video connection interface 4. The switching circuit 2 is used for responding to a first switching electric signal to connect the first video switching interface switching circuit 5 between the first video connecting interface 3 and the second video connecting interface 4; the switching circuit 2 is further adapted to connect the second video interface switching circuit 6 between the first video connection interface 3 and the second video connection interface 4 in response to a second switching electrical signal. The first video adapter switching circuit 5 is connected between the first video connection interface 3 and the second video connection interface 4, and is configured to convert a video signal input by the first video connection interface 3 into a video signal conforming to the second video connection interface 4, and output the video signal through the second video connection interface 4. The second video adapter switching circuit 6 is connected between the first video connection interface 3 and the second video connection interface 4, and is configured to convert a video signal input by the second video connection interface 4 into a video signal conforming to the first video connection interface 3, and output the video signal through the first video connection interface 3.
Referring to fig. 2, a schematic diagram of a structural connection of a switching circuit in an implementation is shown, where the switching circuit 2 includes a first interface connection circuit 21 and a second interface connection circuit 22. The first interface connection circuit 21 is connected to the changeover switch circuit 1, the first video connection interface 3, and the first video interface conversion circuit 5, respectively. The first interface connection circuit 21 is configured to receive a first switching power signal sent by the switch circuit 1, and is configured to respond to the first switching power signal to connect the first video connection interface 3 and the first video interface conversion circuit 5. The second interface connection circuit 22 is connected to the changeover switch circuit 1, the second video connection interface 4, and the first video interface conversion circuit 5, respectively. The second interface connection circuit 22 is configured to receive the first switching power signal sent by the switch circuit 1, and is configured to respond to the first switching power signal to connect the second video connection interface 4 and the second video interface conversion circuit 5.
Referring to fig. 3, a schematic diagram of a structural connection of the switching circuit in an implementation is shown, in which the first interface connection circuit 21 is further connected to the second video interface conversion circuit 6. The first interface connection circuit 21 is further configured to receive a second switching electrical signal sent by the switch circuit 1, and is configured to respond to the second switching electrical signal to connect the first video connection interface 3 and the second video interface conversion circuit 6. The second interface connection circuit 22 is also connected to the second video interface conversion circuit 6. The second interface connection circuit 22 is further configured to receive a second switching electrical signal sent by the switch circuit 1, and is configured to respond to the second switching electrical signal to connect the second video connection interface 4 and the second video interface conversion circuit 6.
In one embodiment, the first video connection interface includes a DP interface. In one embodiment, the second video connection interface comprises an HDMI interface. In one embodiment, the first video interface conversion circuit includes a DP to HDMI chip. In an embodiment, the second video interface conversion circuit includes an HDMI to DP chip. In one embodiment, the model number of the DP-HDMI chip is IT 6563. In one embodiment, the HDMI to DP chip is model LT 6711A.
Referring to fig. 4, a circuit connection diagram of an implementation of the switching circuit is shown, in which the first interface circuit includes a resistor R11, a resistor R12, and a chip U1. The chip U1 includes a first group of data line connection terminals, a second group of data line connection terminals, a third group of data line connection terminals, a first enable control terminal SEL1, and a second enable control terminal SEL 2. The first group of data line connection terminals of the chip U1 are connected with the first video interface 3, the second group of data line connection terminals of the chip U1 are connected with the first video interface conversion circuit 5, and the third group of data connection terminals of the chip U1 are connected with the second video interface conversion circuit 6. One end of the resistor R11 is connected to the first enable control terminal SEL1, and the other end is used as an input of a predetermined voltage source DP 10. One end of the resistor R12 is connected to the second enable control terminal SEL2, and the other end is grounded. The second enable control terminal SEL2 is also used for connection with the change-over switch circuit 1 for input of the first or second switching electrical signal. When the second enable control terminal SEL2 receives the first switching signal, the first and second groups of data line connection terminals of the chip U1 are connected. When the second enable control terminal SEL2 receives the second switching electrical signal, the first and third sets of data line connection terminals of the chip U1 are connected. In one embodiment, the chip U1 has a model number TS3DV 642.
Referring to fig. 5, a circuit connection diagram of the switching circuit in an implementation is shown, in which the second interface circuit includes a resistor R21, a resistor R22, and a chip U2. The chip U2 includes a first group of data line connection terminals, a second group of data line connection terminals, a third enable control terminal SEL3, and a fourth enable control terminal SEL 4. The first group of data line connecting ends of the chip U2 is connected with the second video interface 4, the second group of data line connecting ends of the chip U2 is connected with the first video interface conversion circuit 5, and the third group of data connecting ends of the chip U2 is connected with the second video interface conversion circuit 6. One end of the resistor R21 is connected to the third enable control terminal SEL3, and the other end is used for inputting a predetermined voltage source DP 20. One end of the resistor R22 is connected to the fourth enable control terminal SEL4, and the other end is grounded. The fourth enable control terminal SEL4 is also used for connection with the change-over switch circuit 1 for input of the first or second switching electrical signal. When the fourth enable control terminal SEL4 receives the first switching signal, the first and second groups of data line connection terminals of the chip U2 are connected. When the fourth enable control terminal SEL4 receives the second switching electrical signal, the first and third sets of data line connection terminals of the chip U2 are connected. In one embodiment, the chip U2 has a model number TS3DV 642.
Referring to fig. 6, a circuit connection diagram of a switch circuit in an implementation is shown, the switch circuit includes a resistor R31, a resistor R32, a resistor R33, a dual-row toggle switch K1, a connection terminal SW1 and a connection terminal SW 2. The connection terminal SW1 of the changeover switch circuit is connected to the second enable control terminal SEL2, and the connection terminal SW2 of the changeover switch circuit is connected to the fourth enable control terminal SEL 4. The dual row toggle switch K1 includes a first input, a second input, a first output, a second output, a third output, and a fourth output. The first input terminal and the second input terminal of the double-row toggle switch K1 are electrically connected. The first input end and the second input end of the double-row toggle switch K1 are synchronously connected with the first output end and the third output end or synchronously connected with the second output end and the fourth output end. One end of the resistor R31 is used for receiving the input of a preset voltage source DP30, and the other end is connected to the first input end of the dual-row toggle switch K1. The first output terminal of the double row toggle switch K1 is connected to the connection terminal SW1 of the diverter switch circuit. One end of the resistor R32 is connected with the second output end of the double-row toggle switch K1, and the other end is grounded. One end of the resistor R33 is connected with the third output end of the double-row toggle switch K1, and the other end is grounded. The fourth output terminal of the double-row toggle switch K1 is connected with the connection terminal SW2 of the change-over switch circuit. In one embodiment, the switch circuit further includes a capacitor C1, one end of the capacitor C1 is connected to the first input terminal of the dual-row toggle switch K1, and the other end is grounded.
In an embodiment, as shown in fig. 1, the video interface converter further includes an external power circuit 7, which is respectively connected to the first video interface converting circuit 5, the second video interface converting circuit 6 and the conversion switching circuit 2. The external power circuit 7 is used for providing power for the first video interface conversion circuit 5, the second video interface conversion circuit 6 and the conversion switching circuit 2.
Referring to fig. 7, a schematic diagram of a circuit connection of an external power circuit in an implementation is shown, in an embodiment, the external power circuit includes a USB-C interface 71 and a DC/DC conversion circuit 72. The USB-C interface 71 is used for receiving an input of an external voltage source of a USB interface. The DC/DC conversion circuit 72 is connected to the USB-C interface 71, and is configured to convert a DC power signal input from the USB-C interface 71 into a voltage source DP10, a voltage source DP20, and a voltage source DP 30.
In an embodiment disclosed in the present application, the video interface converter is connected to a signal source of the DP interface and a display device of the HDMI interface, when the video interface converter is used for the DP signal source and the HDMI display device (i.e., the first video connection interface is connected to the DP signal source, and the second video connection interface is connected to the HDMI display device), the double-row toggle switch K1 of the switch circuit is toggled down, at this time, the DP signal is switched to the HDMI signal mode, then the USB-C interface of the external power supply circuit is accessed to the 5V power supply, and finally the corresponding interfaces are respectively accessed to the signal source and the display device. After the video interface converter is connected, because the HDMI display device connected to the second video connection interface detects a 5V voltage input, it will feed back a HOT _ PLUG _ HDMI signal to the chip U2, and then output HDMI _ HPD _ a via the chip U2, the DP-to-HDMI chip of the first video interface conversion circuit will output RXA _ HPD signal after receiving the HDMI _ HPD _ a signal, and finally output HOT _ PLUG _ DP via the chip U1 to the DP signal source connected to the first video connection interface, at this time, the DP host AUX signal will go through AUX _ CHP/AUX _ CHN signal, then through AUX _ CHP _ a/AUX _ CHN _ a signal, then through HDMI _ SCL _ a/HDMI _ SDA _ a signal, and finally go through HDMI _ SCL/HDMI _ SDA signal to the HDMI display device connected to the second video connection interface, after the HDMI signal source and the display device handshake succeeds, the related EDID information is obtained and then the proper resolution is outputted, so the video signal DP0 DP3 is inputted via the chip U1, then the DPA0 DPA3 video signal is outputted, then the TMDS _ A signal (including HDMI0_ A HDMI2_ A, HDMI _ SCL _ A/HDMI _ SDA _ A) is outputted after the video signal passes through the DP-to-HDMI chip of the first video interface conversion circuit, the TMDS _ A signal is finally outputted via the chip U2 (including HDMI0 HDMI2, HDMI _ SCL/HDMI _ SDA), and the HDMI display device connected with the second video connection interface receives the TMDS signal and then displays the image normally. When used for DP signal source and HDMI display device (i.e. the first video interface is connected to the DP signal source and the second video interface is connected to the HDMI display device)
In one embodiment, the video interface converter is connected with a signal source of the HDMI interface and a display device of the DP interface, when the video interface converter is used for the HDMI signal source and the DP display device (i.e., the second video connection interface is connected with the HDMI signal source, and the first video connection interface is connected with the DP display device), the double-row toggle switch K1 of the switch circuit is toggled up, at this time, the HDMI signal to DP signal mode is entered, then the USB-C interface of the external power supply circuit is accessed with the 5V power supply, and finally the corresponding interfaces are respectively accessed with the signal source and the display device. After the video interface converter is connected, the DP display device outputs HOT _ PLUG _ DP signal, then outputs RXB _ HPD signal via the chip U1, then outputs HDMI _ HPD _ B signal via the HDMI-to-DP chip of the second video interface conversion circuit, and outputs HOT _ PLUG _ HDMI via the chip U2 to the HDMI signal source connected to the second video interface, at this time, the DDC signal of the HDMI host will be output via HDMI _ SCL/HDMI _ SDA, HDMI _ SCL _ B/HDMI SDA _ B via the chip U2, then outputs AUX _ CHP _ B/AUX _ CHN _ B via the HDMI-to-DP chip of the second video interface conversion circuit, and finally output via the HDMI-to-DP chip of the second video interface conversion circuit
AUX _ CHP/AUX _ CHN signals are sent to the DP display device, after handshaking between the HDMI signal source and the DP display device is successful, the related EDID information is obtained, and then the appropriate resolution is output, so the TMDS signals (including HDMI0_ HDMI2, HDMI _ SCL/HDMI _ SDA) pass through the chip U2, then the TMDS _ B signals (including HDMI0_ B _ HDMI2_ B, HDMI _ SCL _ B/HDMI _ SDA _ B) pass through the HDMI to DP chip of the second video interface conversion circuit, then the DPB0 DPB3 signals are output, the DPB0 DPB3 signals pass through the chip U1, finally the DP0 DP3 signals are output, and then the DP display device connected with the first video interface receives the DP signals, and then normal image display is realized.
In an embodiment of the present application, a video interface converter indicating a DP male connector and an HDMI male connector for bidirectional signal transmission is disclosed. For the DP signal source matched with the HDMI display device or the HDMI signal source matched with the DP display device, only the corresponding DP interface and the corresponding HDMI interface are required to be accessed into the device with the corresponding interface, and DP conversion to HDMI or DP conversion to HDMI is selectively realized through the double-row toggle switch.
In the embodiment of the present application, a video interface converter is disclosed, which includes a switch circuit, a conversion switching circuit, a first video connection interface, a second video connection interface, a first video switching interface conversion circuit, and a second video interface conversion circuit. The conversion switching circuit is used for responding to the first switching electric signal or the second switching electric signal sent by the switching circuit and outputting the video signal input by the first video connection interface or the second video connection interface through the second video connection interface or the first video connection interface. Wherein the types of the first video connection interface and the second video connection interface are different. Because the video interface converter can realize the video connection interface interconversion of two different grade types through the change over switch circuit for the transmission of two-way video signal source is supported to the video interface converter, use this video interface converter need not pay attention to the directionality of interface, and whatever kind of circumstances only need same converter to realize, reduce the number of times of inserting of pulling out of video interface converter, in order to prolong the life-span of video interface converter, and then improve user's physical examination.
The present application has been described with reference to specific examples, which are provided only to aid understanding of the present application and are not intended to limit the present application. For a person skilled in the art to which the application pertains, several simple deductions, modifications or substitutions may be made according to the idea of the application.
Claims (10)
1. A video interface converter is characterized by comprising a change-over switch circuit, a change-over switching circuit, a first video connection interface, a second video connection interface, a first video switching interface switching circuit and a second video interface switching circuit; the video interface converter is used for outputting the video signal input by the first video connection interface through the second video connection interface or outputting the video signal input by the second video connection interface through the first video connection interface; wherein the first video connection interface and the second video connection interface are of different types;
the switching switch circuit is connected with the conversion switching circuit; the switching circuit is used for sending a first switching electric signal or a second switching electric signal to the switching circuit;
the conversion switching circuit is respectively connected with the first video switching interface conversion circuit, the second video interface conversion circuit, the first video connection interface and the second video connection interface; the switching circuit is used for responding to the first switching electric signal to connect the first video switching interface switching circuit between the first video connection interface and the second video connection interface; the switching circuit is also used for responding to the second switching electric signal to connect the second video switching interface switching circuit between the first video connecting interface and the second video connecting interface;
the first video adapter conversion circuit is connected between the first video connection interface and the second video connection interface, and is used for converting the video signal input by the first video connection interface into a video signal conforming to the second video connection interface and then outputting the video signal through the second video connection interface;
the second video adapter switching circuit is connected between the first video connection interface and the second video connection interface, and is used for converting the video signal input by the second video connection interface into the video signal conforming to the first video connection interface and then outputting the video signal through the first video connection interface.
2. The video interface converter of claim 1, wherein said conversion switching circuit comprises a first interface connection circuit and a second interface connection circuit;
the first interface connecting circuit is respectively connected with the switching switch circuit, the first video connecting interface and the first video interface conversion circuit; the first interface connection circuit is used for receiving the first switching power signal sent by the switching circuit and responding to the first switching power signal to connect the first video connection interface and the first video interface conversion circuit;
the second interface connecting circuit is respectively connected with the switching switch circuit, the second video connecting interface and the first video interface conversion circuit; the first interface connection circuit is used for receiving the first switching power signal sent by the switching circuit and responding to the first switching power signal to connect the second video connection interface and the first video interface conversion circuit.
3. The video interface converter of claim 2, wherein said first interface connection circuit is further connected to said second video interface conversion circuit; the first interface connection circuit is used for receiving the second switching electric signal sent by the switching circuit and responding to the second switching electric signal to connect the first video connection interface and the second video interface conversion circuit;
the second interface connection circuit is also connected with the second video interface conversion circuit; the second interface connection circuit is used for receiving the second switching electric signal sent by the switch circuit and responding to the second switching electric signal to connect the second video connection interface and the second video interface conversion circuit.
4. The video interface converter according to claim 2 or 3, wherein the first interface connection circuit comprises a resistor R11, a resistor R12, and a chip U1;
the chip U1 comprises a first group of data line connection terminals, a second group of data line connection terminals, a third group of data line connection terminals, a first enable control terminal SEL1 and a second enable control terminal SEL 2; a first group of data line connecting ends of the chip U1 are connected with the first video interface, a second group of data line connecting ends of the chip U1 are connected with the first video interface conversion circuit, and a third group of data connecting ends of the chip U1 are connected with the second video interface conversion circuit;
one end of the resistor R11 is connected to the first enable control terminal SEL1, and the other end is used for receiving an input of a preset voltage source DP 10;
one end of the resistor R12 is connected with the second enable control terminal SEL2, and the other end of the resistor R12 is grounded;
the second enable control terminal SEL2 is also used for being connected with the switch circuit to receive the input of the first switching electric signal or the second switching electric signal;
when the second enable control terminal SEL2 receives the first switching signal, connecting a first group of data line connection terminals and a second group of data line connection terminals of the chip U1; when the second enable control terminal SEL2 receives the second switching electrical signal, the first and third sets of data line connection terminals of the chip U1 are connected.
5. The video interface converter of claim 4, wherein the second interface connection circuit comprises a resistor R21, a resistor R22, and a chip U2;
the chip U2 comprises a first group of data line connection terminals, a second group of data line connection terminals, a third enable control terminal SEL3 and a fourth enable control terminal SEL 4; the first group of data line connecting ends of the chip U2 are connected with the second video interface, the second group of data line connecting ends of the chip U2 are connected with the first video interface conversion circuit, and the third group of data connecting ends of the chip U2 are connected with the second video interface conversion circuit;
one end of the resistor R21 is connected with the third enable control terminal SEL3, and the other end of the resistor R21 is used for inputting a preset voltage source DP 20;
one end of the resistor R22 is connected with the fourth enable control terminal SEL4, and the other end of the resistor R22 is grounded;
the fourth enable control terminal SEL4 is also used for being connected with the switch circuit for the input of the first switching electric signal or the second switching electric signal;
when the fourth enable control terminal SEL4 receives the first switching signal, connecting a first group of data line connection terminals and a second group of data line connection terminals of the chip U2; when the fourth enable control terminal SEL4 receives the second switching electrical signal, the first and third sets of data line connection terminals of the chip U2 are connected.
6. The video interface converter of claim 5, wherein the chip U1 has a model number TS3DV 642; the chip U2 has a model number TS3DV 642.
7. The video interface converter of claim 5, wherein the first video connection interface comprises a DP interface; the second video connection interface comprises an HDMI interface;
the first video interface conversion circuit comprises a DP-to-HDMI chip;
the second video interface conversion circuit comprises an HDMI to DP chip.
8. The video interface converter of claim 6, wherein said toggle switch circuit comprises a resistor R31, a resistor R32, a resistor R33, a dual row toggle switch K1, a connection terminal SW1 and a connection terminal SW 2;
a connection terminal SW1 of the changeover switch circuit is connected to the second enable control terminal SEL2, and a connection terminal SW2 of the changeover switch circuit is connected to the fourth enable control terminal SEL 4;
the double-row toggle switch K1 comprises a first input end, a second input end, a first output end, a second output end, a third output end and a fourth output end; the first input end and the second input end of the double-row toggle switch K1 are electrically connected; the first input end and the second input end of the double-row toggle switch K1 are synchronously connected with the first output end and the third output end or synchronously connected with the second output end and the fourth output end;
one end of the resistor R31 is used for receiving the input of a preset voltage source DP30, and the other end of the resistor R31 is connected with the first input end of the double-row toggle switch K1;
the first output end of the double-row toggle switch K1 is connected with the connecting end SW1 of the change-over switch circuit;
one end of the resistor R32 is connected with the second output end of the double-row toggle switch K1, and the other end of the resistor R32 is grounded;
one end of the resistor R33 is connected with the third output end of the double-row toggle switch K1, and the other end of the resistor R33 is grounded;
and the fourth output end of the double-row toggle switch K1 is connected with the connecting end SW2 of the change-over switch circuit.
9. The video interface converter according to claim 1, further comprising an external power circuit, said external power circuit being connected to said first video interface conversion circuit, said second video interface conversion circuit and said conversion switching circuit; the external power supply circuit is used for supplying power to the first video interface conversion circuit, the second video interface conversion circuit and the conversion switching circuit.
10. The video interface converter of claim 9, wherein the external power circuit comprises a USB-C interface and a DC/DC conversion circuit;
the USB-C interface is used for receiving the input of an external voltage source of a USB interface;
the DC/DC conversion circuit is connected with the USB-C interface and is used for converting the direct current power supply signal input by the USB-C interface into a voltage source DP10, a voltage source DP20 and a voltage source DP 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122507160.3U CN216057238U (en) | 2021-10-18 | 2021-10-18 | Video interface converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122507160.3U CN216057238U (en) | 2021-10-18 | 2021-10-18 | Video interface converter |
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| Publication Number | Publication Date |
|---|---|
| CN216057238U true CN216057238U (en) | 2022-03-15 |
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| CN202122507160.3U Active CN216057238U (en) | 2021-10-18 | 2021-10-18 | Video interface converter |
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| CN (1) | CN216057238U (en) |
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