CN216052679U - HDMI connecting wire - Google Patents
HDMI connecting wire Download PDFInfo
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- CN216052679U CN216052679U CN202122522227.0U CN202122522227U CN216052679U CN 216052679 U CN216052679 U CN 216052679U CN 202122522227 U CN202122522227 U CN 202122522227U CN 216052679 U CN216052679 U CN 216052679U
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Abstract
The application discloses HDMI connecting wire includes first HDMI connects, second HDMI connects, signal transmission control circuit and switch circuit. The HDMI connecting wire is used for outputting the electric signals received by the first HDMI connector through the second HDMI connector. The first HDMI connector and the second HDMI connector respectively comprise a first detection end and a second detection end which are connected with the signal transmission control circuit, and the signal transmission control circuit is used for responding to a signal sent by the switch circuit to disconnect an electric signal or connect an electric signal and disconnect or connect the first detection end and the second detection end. Because the signal transmission control circuit is additionally arranged on the HDMI connecting line, the connection or disconnection of the HPD signal line of the HDMI connecting line is controlled, so that the signal transmission or disconnection of the HDMI connecting line is controlled, the plugging times of the HDMI connecting line are reduced, the HDMI connecting line has an interruption function, and the physical examination of a user is improved.
Description
Technical Field
The application relates to the technical field of data lines, in particular to an HDMI connecting line.
Background
The HDMI connecting line is an abbreviation of a high-definition multimedia interface line, can transmit uncompressed high-definition video and multichannel audio data with high quality, has the characteristic of plug and play, can automatically perform negotiation between a signal source and display equipment, automatically selects the most appropriate video/audio format, does not need line/analog or analog/digital conversion before signal transmission, and can ensure the transmission of the video and audio signals with the highest quality. In the practical use of the HDMI connection line, interruption signals are often required to be transmitted, for example, the HDMI connection line is used for connecting a projection device, when a screen needs to be quickly stopped, the existing HDMI line on the market cannot realize quick interruption signal transmission operation, the interruption signal transmission method is that either a plug wire is plugged or is set through a projector remote controller or a computer, but the three modes cannot realize the signal transmission of the HDMI line.
Disclosure of Invention
The application provides an HDMI connecting wire to solve the technical problem that can't realize the signal transmission of the quick interrupt HDMI line among the prior art.
In a first aspect, an HDMI connection line for connecting a first electronic device and a second electronic device includes a first HDMI connector, a second HDMI connector, a signal transmission control circuit, and a switch circuit;
the HDMI connecting line is used for outputting the electric signal received by the first HDMI connector through the second HDMI connector;
the first HDMI connector comprises a first detection end, the first detection end is connected with the signal transmission control circuit, and the first detection end is used for detecting whether the first electronic equipment is connected with the second electronic equipment;
the second HDMI connector comprises a second detection end, the second detection end is connected with the signal transmission control circuit, and the second detection end is used for detecting whether the first electronic equipment is connected with the second electronic equipment;
the switch circuit is connected with the signal transmission control circuit and is used for sending a signal disconnection electric signal or a signal connection electric signal to the signal transmission control circuit;
the signal transmission control circuit is used for responding to the signal disconnection electric signal or the signal connection electric signal and disconnecting or connecting the first detection end and the second detection end.
In one embodiment, the first detection terminal is an HDMI _ HPD1 connection terminal, and the second detection terminal is an HDMI _ HPD2 connection terminal.
In one embodiment, the signal transmission control circuit comprises a first connection end, a second connection end, a power connection end, a control signal connection end, an electronic switch circuit and a control unit circuit;
the first connecting end is connected with the HDMI _ HPD1 connecting end; the second connection end is connected with the HDMI _ HPD2 connection end; the power supply connecting end is used for inputting an external power supply so as to provide power for the control unit circuit; the control signal connecting end is connected with the switch circuit and used for receiving the signal disconnection electric signal or the signal connection electric signal;
the control unit circuit comprises a third connecting end, a fourth connecting end and a fifth connecting end, the third connecting end is connected with the power supply connecting end, the fourth connecting end is connected with the control signal connecting end, and the fifth connecting end is connected with the electronic switch circuit; the control unit circuit is used for outputting a high level signal or a low level signal to the electronic switch circuit when the control signal connecting end inputs the signal disconnection electric signal or the signal connection electric signal.
In one embodiment, the control unit circuit includes an ENF202 chip.
In an embodiment, the first HDMI connector further includes a power input terminal, and the power connection terminal is connected to the power input terminal.
In one embodiment, the electronic switching circuit comprises a MOS switch transistor Q1, a MOS switch transistor Q2, and a resistor R11;
a first pole of the MOS switch Q1 is connected to the first connection terminal of the signal transmission control circuit, a first pole of the MOS switch Q2 is connected to the second connection terminal of the signal transmission control circuit, a second pole of the MOS switch Q1 is connected to the second pole of the MOS switch Q2, and a control pole of the MOS switch Q1 and a control pole of the MOS switch Q2 are connected to the third connection terminal of the control unit circuit;
one end of the resistor R11 is connected with the third connecting end of the control unit circuit, and the other end is grounded.
In an embodiment, the MOS switch transistor Q1 and the MOS switch transistor Q2 are both PMOS transistors.
In one embodiment, the switch circuit comprises a sixth connection terminal and a first switch;
the sixth connecting end is connected with the signal transmission control circuit;
one end of the first switch is connected with the sixth connecting end, and the other end of the first switch is grounded.
In one embodiment, the switching circuit further comprises a second switch;
one end of the second switch is connected with the sixth connecting end, and the other end of the second switch is grounded;
the first switch is arranged close to the first HDMI joint end, and the second switch is arranged close to the second HDMI joint end.
In one embodiment, the first switch and the second switch comprise a self-locking switch, a toggle switch, a tact switch and/or a touch switch.
In one embodiment, the first HDMI connector is a female connector; and/or the second HDMI connector is a female connector.
The HDMI connection line according to the above embodiment includes a first HDMI connector, a second HDMI connector, a signal transmission control circuit, and a switch circuit. The HDMI connecting wire is used for outputting the electric signals received by the first HDMI connector through the second HDMI connector. The first HDMI connector and the second HDMI connector respectively comprise a first detection end and a second detection end which are connected with the signal transmission control circuit, and the signal transmission control circuit is used for responding to a signal sent by the switch circuit to disconnect an electric signal or connect an electric signal and disconnect or connect the first detection end and the second detection end. Because the signal transmission control circuit is additionally arranged on the HDMI connecting line, the connection or disconnection of the HPD signal line of the HDMI connecting line is controlled, so that the signal transmission or disconnection of the HDMI connecting line is controlled, the plugging times of the HDMI connecting line are reduced, the HDMI connecting line has an interruption function, and the physical examination of a user is improved.
Drawings
FIG. 1 is a schematic diagram of an HDMI connection line structure;
FIG. 2 is a circuit diagram of a signal transmission control circuit in one implementation;
fig. 3 is a circuit diagram of a switching circuit in an 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).
In the life and work of people, for example, in the meeting or the speech process, people need to project the screen on a computer to a projector or an external LED or LCD large screen for display, and when people may need to temporarily interrupt the current screen projection (for example, data needs to be searched on the computer, but some pictures are not seen by people), the connection line of projection is pulled out and then plugged after the connection line is confirmed, so that the quality of the meeting and the speech is affected.
The embodiment of the application discloses an HDMI connecting wire is through having increased signal transmission control circuit on the HDMI connecting wire, realizes the control of intercommunication and disconnection to HDMI connecting wire HPD signal line, and then realizes the control to HDMI connecting wire signal transmission or disconnection, has reduced the number of times of inserting of pulling out of HDMI connecting wire for the HDMI connecting wire has the temporary interruption function, in order to improve user's physical examination.
Example one
Referring to fig. 1, a schematic diagram of a HDMI connection structure in an implementation is shown, the HDMI connection includes a first HDMI connector 20, a second HDMI connector 30, a signal transmission control circuit 10, and a switch circuit 40. The first HDMI connector 20 and the second HDMI connector 30 of the HDMI connection line are respectively used for connecting a first electronic device and a second electronic device, so as to output an electrical signal received by the first HDMI connector 20 through the second HDMI connector 30. The first HDMI connector 20 includes a first detection terminal, which is connected to the signal transmission control circuit 10 and is used to detect whether the first electronic device is connected to the second electronic device. The second HDMI connector 30 includes a second detection terminal, which is connected to the signal transmission control circuit 10 and is used to detect whether the first electronic device is connected to the second electronic device. The switch circuit 40 is connected to the signal transmission control circuit 10, and the switch circuit 40 is configured to send a signal disconnection electric signal or a signal connection electric signal to the signal transmission control circuit 10. The signal transmission control circuit 10 is used for responding to the signal disconnection electric signal or the signal connection electric signal, and disconnecting or connecting the first detection terminal and the second detection terminal. In one embodiment, the first detection terminal is the HDMI _ HPD1 connection terminal of the first HDMI connector, and the second detection terminal is the HDMI _ HPD2 connection terminal of the second HDMI connector. In one embodiment, the first HDMI connector 20 is a male connector, and the second HDMI connector 30 is a male connector. In one embodiment, the first HDMI connector 20 is a male connector, and the second HDMI connector 30 is a female connector.
In one embodiment, the first HDMI connector 20 and the second HDMI connector 30 further include a SHELL1 connection terminal, a SHELL2 connection terminal, a SHELL3 connection terminal, and a SHELL4 connection terminal, respectively, and the SHELL1 connection terminal, the SHELL2 connection terminal, the SHELL3 connection terminal, and the SHELL4 connection terminal of the first HDMI connector 20 and the second HDMI connector 30 are grounded.
Referring to fig. 2, which is a schematic circuit diagram of a signal transmission control circuit in an implementation, the signal transmission control circuit 10 includes a first connection end, a second connection end, a power connection end, a control signal connection end, an electronic switch circuit 12, and a control unit circuit 11. The first connection end of the signal transmission control circuit 10 is connected to the HDMI _ HPD1 connection end, and the second connection end of the signal transmission control circuit 10 is connected to the HDMI _ HPD2 connection end. The power connection terminal is used for inputting an external power supply to provide power for the control unit circuit 11. The control signal connection terminal is connected to the switching circuit 40 for receiving a signal disconnection electric signal or a signal connection electric signal. The control unit circuit 11 comprises a third connecting end, a fourth connecting end and a fifth connecting end, the third connecting end of the control unit circuit 11 is connected with the power supply connecting end, the fourth connecting end of the control unit circuit 11 is connected with the control signal connecting end, and the fifth connecting end of the control unit circuit 11 is connected with the electronic switch circuit 12. The control unit circuit 11 is configured to output a high level signal or a low level signal to the electronic switch circuit 12 when the control signal connection terminal inputs a signal disconnection electric signal or a signal connection electric signal. In one embodiment, the control unit circuit 11 includes an ENF202 chip. In an embodiment, the first HDMI connector further includes a power input terminal, and the power connection terminal is connected to the power input terminal. In one embodiment, the power input terminal is a +5V power connection terminal.
In one embodiment, the electronic switching circuit 12 includes a MOS switch Q1, a MOS switch Q2, and a resistor R11. A first electrode (drain electrode) of the MOS switch Q1 is connected to the first connection terminal of the signal transmission control circuit 10, a first electrode (drain electrode) of the MOS switch Q2 is connected to the second connection terminal of the signal transmission control circuit 10, a second electrode (source electrode) of the MOS switch Q1 is connected to the second electrode (source electrode) of the MOS switch Q2, and a control electrode (gate electrode) of the MOS switch Q1 and a control electrode (gate electrode) of the MOS switch Q2 are connected to the third connection terminal of the control unit circuit 11. One end of the resistor R11 is connected to the third connection terminal of the control unit circuit 11, and the other end is grounded. In one embodiment, the MOS switch Q1 and the MOS switch Q2 are both PMOS transistors. In one embodiment, MOS switch Q1 and MOS switch Q2 are model No. AO 3401.
Referring to fig. 3, which is a circuit diagram of an embodiment of the switch circuit, the switch circuit 40 includes a sixth connection terminal and a first switch SW 1. The sixth connection terminal of the switch circuit 40 is connected to the signal transmission control circuit 10, and one end of the first switch SW1 is connected to the sixth connection terminal of the switch circuit 40, and the other end is grounded. In one embodiment, the switch circuit 40 further includes a second switch SW2, one end of the second switch SW2 is connected to the sixth connection terminal of the switch circuit 40, and the other end is grounded. In one embodiment, the first switch SW1 is disposed proximate the first HDMI terminal 20 and the second switch SW2 is disposed proximate the second HDMI terminal 30. In one embodiment, the first switch SW1 and the second switch SW2 include a self-locking switch, a toggle switch, a tact switch, and/or a touch switch.
In this application embodiment, through the terminal position at the HDMI wire rod increase switch to connect and the disconnection processing is carried out to the HPD signal line in the wire rod, can throw screen interrupt and connect in real time. When the switch is switched on, the HPD signal line is connected, the picture is normally projected, when the switch is switched off, the HPD signal line is cut off, and the picture is interrupted and is not projected. The working principle that the HDMI connecting line realizes signal connection and disconnection in the embodiment of the application is described as follows:
the first switch SW1 and the second switch SW2 are respectively arranged on the male connectors at two ends of the HDMI connecting line, the first HDMI connector is connected to the computer end, and the second HDMI connector is connected to the projector end. A pin 1 of a chip U1 of the press unit circuit is powered on to output a low level by default, an MOS switching tube Q1 and an MOS switching tube Q2 are conducted, an HPD signal is communicated, and a computer recognizes that an external display is connected and outputs a picture signal normally. When the user wants to interrupt the external display signal temporarily, the user lightly presses the first switch SW1 or the second switch SW2, the level of pin 1 of the chip U1 of the pressing unit circuit is converted into high level, the MOS switch tube Q1 and the MOS switch tube Q2 are cut off, the HPD is cut off, the computer recognizes that the display is cut off, and the output of the picture signal to the external display is stopped. The two switches of the first switch SW1 and the second switch SW2 are arranged and respectively arranged at two ends of the HDMI connecting line, so that a user can conveniently control the two ends of the HDMI connecting line, and the user does not need to distinguish the connecting direction when using the HDMI connecting line.
The application discloses an HDMI connecting wire really, includes first HDMI connects, second HDMI connects, signal transmission control circuit and switch circuit. The HDMI connecting wire is used for outputting the electric signals received by the first HDMI connector through the second HDMI connector. The first HDMI connector and the second HDMI connector respectively comprise a first detection end and a second detection end which are connected with the signal transmission control circuit, and the signal transmission control circuit is used for responding to a signal sent by the switch circuit to disconnect an electric signal or connect an electric signal and disconnect or connect the first detection end and the second detection end. Because the signal transmission control circuit is additionally arranged on the HDMI connecting line, the connection or disconnection of the HPD signal line of the HDMI connecting line is controlled, so that the signal transmission or disconnection of the HDMI connecting line is controlled, the plugging times of the HDMI connecting line are reduced, the HDMI connecting line has an interruption function, and the physical examination of a user is improved.
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. An HDMI connecting line is used for connecting a first electronic device and a second electronic device, and is characterized in that the HDMI connecting line comprises a first HDMI connector, a second HDMI connector, a signal transmission control circuit and a switch circuit;
the HDMI connecting line is used for outputting the electric signal received by the first HDMI connector through the second HDMI connector;
the first HDMI connector comprises a first detection end, the first detection end is connected with the signal transmission control circuit, and the first detection end is used for detecting whether the first electronic equipment is connected with the second electronic equipment;
the second HDMI connector comprises a second detection end, the second detection end is connected with the signal transmission control circuit, and the second detection end is used for detecting whether the first electronic equipment is connected with the second electronic equipment;
the switch circuit is connected with the signal transmission control circuit and is used for sending a signal disconnection electric signal or a signal connection electric signal to the signal transmission control circuit;
the signal transmission control circuit is used for responding to the signal disconnection electric signal or the signal connection electric signal and disconnecting or connecting the first detection end and the second detection end.
2. The HDMI link of claim 1, wherein the first detection terminal is an HDMI _ HPD1 connection terminal, and the second detection terminal is an HDMI _ HPD2 connection terminal.
3. The HDMI connection line of claim 2, wherein said signal transmission control circuit comprises a first connection terminal, a second connection terminal, a power connection terminal, a control signal connection terminal, an electronic switch circuit and a control unit circuit;
the first connecting end is connected with the HDMI _ HPD1 connecting end; the second connection end is connected with the HDMI _ HPD2 connection end; the power supply connecting end is used for inputting an external power supply so as to provide power for the control unit circuit; the control signal connecting end is connected with the switch circuit and used for receiving the signal disconnection electric signal or the signal connection electric signal;
the control unit circuit comprises a third connecting end, a fourth connecting end and a fifth connecting end, the third connecting end is connected with the power supply connecting end, the fourth connecting end is connected with the control signal connecting end, and the fifth connecting end is connected with the electronic switch circuit; the control unit circuit is used for outputting a high level signal or a low level signal to the electronic switch circuit when the control signal connecting end inputs the signal disconnection electric signal or the signal connection electric signal.
4. The HDMI connection of claim 3, wherein said control unit circuit comprises an ENF202 chip.
5. The HDMI connection of claim 4, wherein said first HDMI contact further comprises a power input, said power connection terminal being connected to said power input.
6. The HDMI connection of claim 3, wherein said electronic switching circuit comprises MOS switch Q1, MOS switch Q2 and resistor R11;
a first pole of the MOS switch Q1 is connected to the first connection terminal of the signal transmission control circuit, a first pole of the MOS switch Q2 is connected to the second connection terminal of the signal transmission control circuit, a second pole of the MOS switch Q1 is connected to the second pole of the MOS switch Q2, and a control pole of the MOS switch Q1 and a control pole of the MOS switch Q2 are connected to the third connection terminal of the control unit circuit;
one end of the resistor R11 is connected with the third connecting end of the control unit circuit, and the other end is grounded.
7. The HDMI connection line of claim 6, wherein said MOS switch transistor Q1 and said MOS switch transistor Q2 are both PMOS transistors.
8. The HDMI connection of claim 1, wherein said switch circuit comprises a sixth connection terminal and a first switch;
the sixth connecting end is connected with the signal transmission control circuit;
one end of the first switch is connected with the sixth connecting end, and the other end of the first switch is grounded.
9. The HDMI connection of claim 8, wherein said switching circuit further comprises a second switch;
one end of the second switch is connected with the sixth connecting end, and the other end of the second switch is grounded;
the first switch is arranged close to the first HDMI joint end, and the second switch is arranged close to the second HDMI joint end.
10. The HDMI connection of claim 8, wherein said first and second switches comprise a self-locking switch, a toggle switch, a tact switch and/or a touch switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122522227.0U CN216052679U (en) | 2021-10-19 | 2021-10-19 | HDMI connecting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122522227.0U CN216052679U (en) | 2021-10-19 | 2021-10-19 | HDMI connecting wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216052679U true CN216052679U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122522227.0U Active CN216052679U (en) | 2021-10-19 | 2021-10-19 | HDMI connecting wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216052679U (en) |
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2021
- 2021-10-19 CN CN202122522227.0U patent/CN216052679U/en active Active
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