CN219678553U - HDMI bidirectional switcher - Google Patents
HDMI bidirectional switcher Download PDFInfo
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- CN219678553U CN219678553U CN202321370907.8U CN202321370907U CN219678553U CN 219678553 U CN219678553 U CN 219678553U CN 202321370907 U CN202321370907 U CN 202321370907U CN 219678553 U CN219678553 U CN 219678553U
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- 230000002457 bidirectional effect Effects 0.000 title abstract description 7
- 230000003993 interaction Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Abstract
The utility model relates to the technical field of switchers, in particular to an HDMI bidirectional switcher, which comprises a machine body, wherein the machine body is provided with a first interface and two second interfaces, a first analog switch U1, a second analog switch U14 and a control chip U5 are arranged in the machine body, the first analog switch U1 is arranged between the first interface and the two second interfaces, and the first analog switch U4 is arranged between the first interface and the two second interfaces; the first analog switch U1 and the second analog switch U14 are used for controlling data interaction between the first interface and the two second interfaces; the model of the control chip U5 is ACP-MCU-A428, and the control chip U5 is electrically connected with the first analog switch U1 and the second analog switch U14 respectively. According to the utility model, the control chip U5 and the control switch are matched to realize the state switching, so that the automatic switching under the two modes of 1 in and 2 out and 2 in and 1 out is realized, and the flexibility is improved.
Description
Technical Field
The utility model relates to the technical field of switches, in particular to an HDMI bidirectional switch.
Background
The switcher is a device for realizing connection between the display devices and the host, and is generally used for realizing switching and data interaction between one or more display devices and one or more hosts, so that the final display effect is better.
The conventional switch is generally used for unidirectional data transmission, i.e. the switch defines a switch with one end connected to the host and the other end connected to the display device, for example, a one-to-two switch is used for data transmission between one host and two display devices, and when two hosts and one display device are required for data transmission, another switch is required to be implemented, resulting in insufficient flexibility.
Disclosure of Invention
The utility model provides an HDMI bidirectional switcher aiming at the problems in the prior art, which can change input and output interfaces according to actual needs, so as to switch transmission directions, thereby improving the flexibility of use.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides an HDMI bidirectional switcher, which comprises a machine body, wherein the machine body is provided with a first interface and two second interfaces, a first analog switch U1, a second analog switch U14 and a control chip U5 are arranged in the machine body, the first analog switch U1 is arranged between the first interface and the two second interfaces, and the first analog switch U4 is arranged between the first interface and the two second interfaces;
the first analog switch U1 and the second analog switch U14 are used for controlling data interaction between the first interface and the two second interfaces;
the model of the control chip U5 is ACP-MCU-A428, the control chip U5 is electrically connected with the first analog switch U1 and the second analog switch U14 respectively, the control chip U5 is connected with a control switch, the control switch is used for inputting a switching signal to the control chip U5, and the control chip U5 is used for controlling the signal transmission direction between the first interface and the second interface.
Further, a feedback circuit is arranged between the second pin and the third pin of the control chip U5, the fourth pin of the control chip U5 is connected to the first interface, the sixth pin of the control chip U5 is connected to the control switch, the seventh pin of the control chip U5 is connected to the first control chip U1 and the second control chip U4, and the eighth pin of the control chip U5 is grounded;
the first pin of the control chip U5 is also connected with a capacitor C6, and the capacitor C6 is grounded.
Further, the feedback circuit comprises a display lamp LED1, a display lamp LED2, a resistor R1 and a resistor R2, wherein the display lamp LED1 is connected with the display lamp LED2 in parallel, the resistor R1 is connected with the display lamp LED1 in series, the resistor R2 is connected with the display lamp LED2 in series, the anode of the display lamp LED1 and the anode of the display lamp LED2 are connected with each other, the cathode of the display lamp LED1 is connected with the second pin of the control chip U5, and the cathode of the display lamp LED2 is connected with the third pin of the control chip U5.
Further, the control switch includes a switch chip J1, a resistor R3 and a capacitor C5, the type of the switch chip J1 is k2_1102dp_14sw, the first pin and the second pin of the switch chip J1 are grounded, the third pin and the fourth pin of the switch chip J1 are connected to the control chip U5, the third pin and the fourth pin of the switch chip J1 are connected to the power via the resistor R3, and the third pin and the fourth pin of the switch chip J1 are grounded via the capacitor C5.
Further, the model number of the first analog switch U1 is AW3410S, the first pin, the second pin, the fourth pin and the fifth pin of the first analog switch U1 are all connected to the first interface, the sixth pin of the first analog switch U1 is connected to the control chip U5, the eighth pin, the ninth pin, the thirteenth pin and the fourteenth pin of the first analog switch U1 are all connected to one second interface, and the tenth pin, the eleventh pin, the fifteenth pin and the sixteenth pin of the first analog switch U1 are all connected to the other second interface; the seventh pin and the eighteenth pin of the first analog switch U1 are grounded, the seventeenth pin of the first analog switch U1 is powered on, and a capacitor C1 is arranged between the seventeenth pin and the eighteenth pin of the first analog switch.
Further, the model number of the second analog switch U14 is AW3410S, the first pin, the second pin, the fourth pin and the fifth pin of the second analog switch U14 are all connected to the first interface, the sixth pin of the second analog switch U14 is connected to the control chip U5, the eighth pin, the ninth pin, the thirteenth pin and the fourteenth pin of the second analog switch U14 are all connected to one second interface, and the tenth pin, the eleventh pin, the fifteenth pin and the sixteenth pin of the second analog switch U14 are all connected to the other second interface; the seventh pin and the eighteenth pin of the second analog switch U14 are grounded, the seventeenth pin of the second analog switch U14 is powered, and a capacitor C3 is arranged between the seventeenth pin and the eighteenth pin of the first analog switch.
The utility model has the beneficial effects that: the utility model realizes the switching of states through the cooperation of the control chip U5 and the control switch, specifically, the control chip U5 senses the type of the equipment connected with the first interface and the second interface, and then the utility model can automatically switch in two modes of 1 in 2 out and 2 in 1 out according to the switching mode of the equipment type, thereby improving the flexibility.
Drawings
FIG. 1 is a schematic diagram of the present utility model.
Fig. 2 is a schematic view of another view of the present utility model.
Fig. 3 is a circuit diagram of an analog switch, a first analog switch, a second analog switch, an audio transmission module, and a second interface according to the present utility model.
Fig. 4 is a circuit diagram of a first interface of the present utility model.
Fig. 5 is a circuit diagram of a control switch of the present utility model.
Fig. 6 is a circuit diagram of a feedback circuit of the present utility model.
Reference numerals: 1-organism, 2-first interface, 3-second interface, 4-control switch, 5-feedback circuit.
Detailed Description
The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model. The present utility model will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the HDMI bidirectional switch provided by the present utility model includes a body 1, wherein the body 1 is provided with a first interface 2 and two second interfaces 3, a first analog switch U1, a second analog switch U4 and a control chip U5 are disposed in the body 1, the first analog switch U1 is disposed between the first interface 2 and the two second interfaces 3, and the first analog switch U4 is disposed between the first interface 2 and the two second interfaces 3;
the first analog switch U1 and the second analog switch U4 are used for controlling the first interface 2 and the two second interfaces 3 to perform data interaction;
the model of the control chip U5 is ACP-MCU-A428, the control chip U5 is electrically connected with the first analog switch U1 and the second analog switch U4 respectively, the control chip U5 is connected with the control switch 4, the control switch 4 is used for inputting a switching signal to the control chip U5, and the control chip U5 is used for controlling the signal transmission direction between the first interface 2 and the second interface 3.
It should be noted that fig. 3 and 4 are actually an entire diagram for the sake of clear reference, i.e. the first interface 2 of fig. 4 is actually connected to the left side of fig. 3.
In actual use, the first pin of the control chip U5 is used for power connection, a feedback circuit 5 is arranged between the second pin and the third pin of the control chip U5, the fourth pin of the control chip U5 is connected with the first interface 2, the sixth pin of the control chip U5 is connected with the control switch 4, the seventh pin of the control chip U5 is connected with the first control chip U1 and the second control chip U4, and the eighth pin of the control chip U5 is grounded; the first pin of the control chip U5 is also connected with a capacitor C6, and the capacitor C6 is grounded.
Namely, the control chip U5 is mainly used for receiving signals of the control switch 4, for example, when the utility model is in a 1-in 2-out distribution mode, the first interface 2 is used for being externally connected with a host, and the two second interfaces 3 are respectively externally connected with two display devices; when the mode needs to be switched, only the first interface 2 is externally connected with display equipment, and the two second interfaces 3 are respectively externally connected with two hosts, at the moment, the control chip U5 recognizes that the signal protocols of the first analog switch U1 and the second analog switch U14 change, so that the data transmission directions of the first analog switch U1 and the second analog switch U14 are controlled to change, and the mode is switched to a 2-in-1 switching mode. In the 2-in-1 switching mode, the control switch 4 is configured to input a signal to the control chip U5, so that the control chip U5 switches the host that is currently in data transmission with the display device.
The utility model can realize the switching of two modes, thereby realizing the functional compatibility of the distributor and the switcher and improving the flexibility.
In this embodiment, the feedback circuit 5 includes a display lamp LED1, a display lamp LED2, a resistor R1, and a resistor R2, where the display lamp LED1 is connected in parallel with the display lamp LED2, the resistor R1 is connected in series with the display lamp LED1, the resistor R2 is connected in series with the display lamp LED2, the positive electrode of the display lamp LED1 and the positive electrode of the display lamp LED2 are both connected with electricity, the negative electrode of the display lamp LED1 is connected to the second pin of the control chip U5, and the negative electrode of the display lamp LED2 is connected to the third pin of the control chip U5.
The feedback circuit 5 is used for feeding back the current second interface 3 in the working state, specifically the lighting states of the display lamp LED1 and the display lamp LED2, so as to determine the state of the second interface 3 connected with the first analog switch U1 or the second analog switch U14: for example, when in the 1 in 2 out dispensing mode, both the display lamp LED1 and the display lamp LED2 are in a light emitting state; when the display device is in the 2-in 1-out switching mode, the display lamp corresponding to the second interface 3 inserted by the host connected with the display device emits light, so that a user can intuitively know the current working state of the display device.
In this embodiment, the control switch 4 includes a switch chip J1, a resistor R3 and a capacitor C5, the type of the switch chip J1 is k2_1102dp_14sw, the first pin and the second pin of the switch chip J1 are grounded, the third pin and the fourth pin of the switch chip J1 are connected to the control chip U5, the third pin and the fourth pin of the switch chip J1 are connected to the power via the resistor R3, and the third pin and the fourth pin of the switch chip J1 are grounded via the capacitor C5.
Namely, the control switch 4 is a touch switch, so that a worker can realize the switching of the host computer by touching.
In this embodiment, the model number of the first analog switch U1 is AW3410S, the first pin, the second pin, the fourth pin and the fifth pin of the first analog switch U1 are all connected to the first interface 2, the sixth pin of the first analog switch U1 is connected to the control chip U5, the eighth pin, the ninth pin, the thirteenth pin and the fourteenth pin of the first analog switch U1 are all connected to one second interface 3, and the tenth pin, the eleventh pin, the fifteenth pin and the sixteenth pin of the first analog switch U1 are all connected to the other second interface 3; the seventh pin and the eighteenth pin of the first analog switch U1 are grounded, the seventeenth pin of the first analog switch U1 is powered on, and a capacitor C1 is arranged between the seventeenth pin and the eighteenth pin of the first analog switch.
In this embodiment, the model number of the second analog switch U14 is AW3410S, the first pin, the second pin, the fourth pin and the fifth pin of the second analog switch U14 are all connected to the first interface 2, the sixth pin of the second analog switch U14 is connected to the control chip U5, the eighth pin, the ninth pin, the thirteenth pin and the fourteenth pin of the second analog switch U14 are all connected to one second interface 3, and the tenth pin, the eleventh pin, the fifteenth pin and the sixteenth pin of the second analog switch U14 are all connected to the other second interface 3; the seventh pin and the eighteenth pin of the second analog switch U14 are grounded, the seventeenth pin of the second analog switch U14 is powered, and a capacitor C3 is arranged between the seventeenth pin and the eighteenth pin of the first analog switch.
The connection modes of the first analog switch U1 and the second analog switch U14 are basically consistent, and the first analog switch U1 and the second analog switch U14 are mainly used for realizing data interaction between one first interface 2 and two second interfaces 3, so that the data transmission efficiency is higher.
In this embodiment, the machine body 1 is further provided with an audio transmission module, and the audio transmission module is disposed between the main control chip U5, the first analog switch U1 and the second analog switch U14.
The audio transmission module mainly comprises a chip U15 with the model of AW7227S, and is used for realizing the interactive transmission of audio signals between the first interface 2 and the two second interfaces 3.
The present utility model is not limited to the preferred embodiments, but is intended to be limited to the following description, and any modifications, equivalent changes and variations in light of the above-described embodiments will be apparent to those skilled in the art without departing from the scope of the present utility model.
Claims (7)
1. The utility model provides a two-way switch of HDMI, includes the organism, the organism is provided with first interface and two second interfaces, its characterized in that: the machine body is internally provided with a first analog switch U1, a second analog switch U14 and a control chip U5, the first analog switch U1 is arranged between a first interface and two second interfaces, and the first analog switch U4 is arranged between the first interface and two second interfaces;
the first analog switch U1 and the second analog switch U14 are used for controlling data interaction between the first interface and the two second interfaces;
the model of the control chip U5 is ACP-MCU-A428, the control chip U5 is electrically connected with the first analog switch U1 and the second analog switch U14 respectively, the control chip U5 is connected with a control switch, the control switch is used for inputting a switching signal to the control chip U5, and the control chip U5 is used for controlling the signal transmission direction between the first interface and the second interface.
2. The HDMI bi-directional switch of claim 1, wherein: the first pin of the control chip U5 is used for power connection, a feedback circuit is arranged between the second pin and the third pin of the control chip U5, the fourth pin of the control chip U5 is connected to the first interface, the sixth pin of the control chip U5 is connected to the control switch, the seventh pin of the control chip U5 is connected to the first control chip U1 and the second control chip U4, and the eighth pin of the control chip U5 is grounded;
the first pin of the control chip U5 is also connected with a capacitor C6, and the capacitor C6 is grounded.
3. The HDMI bi-directional switch of claim 2, wherein: the feedback circuit comprises a display lamp LED1, a display lamp LED2, a resistor R1 and a resistor R2, wherein the display lamp LED1 is connected with the display lamp LED2 in parallel, the resistor R1 is connected with the display lamp LED1 in series, the resistor R2 is connected with the display lamp LED2 in series, the anode of the display lamp LED1 and the anode of the display lamp LED2 are both connected with electricity, the cathode of the display lamp LED1 is connected with the second pin of the control chip U5, and the cathode of the display lamp LED2 is connected with the third pin of the control chip U5.
4. The HDMI bi-directional switch of claim 1, wherein: the control switch comprises a switch chip J1, a resistor R3 and a capacitor C5, the type of the switch chip J1 is K2_1102DP_14SW, a first pin and a second pin of the switch chip J1 are grounded, a third pin and a fourth pin of the switch chip J1 are connected to the control chip U5, the third pin and the fourth pin of the switch chip J1 are connected to the electricity through the resistor R3, and the third pin and the fourth pin of the switch chip J1 are grounded through the capacitor C5.
5. The HDMI bi-directional switch of claim 1, wherein: the model of the first analog switch U1 is AW3410S, the first pin, the second pin, the fourth pin and the fifth pin of the first analog switch U1 are all connected to the first interface, the sixth pin of the first analog switch U1 is connected to the control chip U5, the eighth pin, the ninth pin, the thirteenth pin and the fourteenth pin of the first analog switch U1 are all connected to one second interface, and the tenth pin, the eleventh pin, the fifteenth pin and the sixteenth pin of the first analog switch U1 are all connected to the other second interface; the seventh pin and the eighteenth pin of the first analog switch U1 are grounded, the seventeenth pin of the first analog switch U1 is powered on, and a capacitor C1 is arranged between the seventeenth pin and the eighteenth pin of the first analog switch.
6. The HDMI bi-directional switch of claim 1, wherein: the model of the second analog switch U14 is AW3410S, the first pin, the second pin, the fourth pin and the fifth pin of the second analog switch U14 are all connected to the first interface, the sixth pin of the second analog switch U14 is connected to the control chip U5, the eighth pin, the ninth pin, the thirteenth pin and the fourteenth pin of the second analog switch U14 are all connected to one second interface, and the tenth pin, the eleventh pin, the fifteenth pin and the sixteenth pin of the second analog switch U14 are all connected to the other second interface; the seventh pin and the eighteenth pin of the second analog switch U14 are grounded, the seventeenth pin of the second analog switch U14 is powered, and a capacitor C3 is arranged between the seventeenth pin and the eighteenth pin of the first analog switch.
7. The HDMI bi-directional switch of claim 1, wherein: the machine body is also provided with an audio transmission module, and the audio transmission module is arranged among the main control chip U5, the first analog switch U1 and the second analog switch U14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321370907.8U CN219678553U (en) | 2023-05-31 | 2023-05-31 | HDMI bidirectional switcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321370907.8U CN219678553U (en) | 2023-05-31 | 2023-05-31 | HDMI bidirectional switcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219678553U true CN219678553U (en) | 2023-09-12 |
Family
ID=87923496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321370907.8U Active CN219678553U (en) | 2023-05-31 | 2023-05-31 | HDMI bidirectional switcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219678553U (en) |
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2023
- 2023-05-31 CN CN202321370907.8U patent/CN219678553U/en active Active
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