CN219087185U - Audio and video long-distance transmission control circuit - Google Patents
Audio and video long-distance transmission control circuit Download PDFInfo
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- CN219087185U CN219087185U CN202320060197.2U CN202320060197U CN219087185U CN 219087185 U CN219087185 U CN 219087185U CN 202320060197 U CN202320060197 U CN 202320060197U CN 219087185 U CN219087185 U CN 219087185U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model relates to an audio and video long-distance transmission control circuit which comprises an input and output interface circuit, a receiving circuit, a transmitting circuit, a main control circuit, an interaction circuit and a power supply circuit. The audio and video signals are read through the input/output interface circuit, bidirectional data transmission is carried out through the serial port and the receiving and transmitting circuit, and the control interaction is carried out through the main control circuit, so that the separation of the display and control part and the equipment main body part is realized, the device is suitable for being used in application scenes such as automobiles, multimedia teaching, meeting places and the like, the device is very convenient, the transmission distance can reach more than 10 meters, and the device is suitable for more personalized scenes.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to an audio and video long-distance transmission control circuit.
Background
With the continuous development of new media, audio and video playing devices are increasingly used. The display part and the control part of the traditional audio/video playing device are generally combined with the device body, in some special application scenes, such as automobiles, the display part is usually arranged on an instrument desk, the audio/video playing device is usually arranged on a trunk, if the traditional audio/video playing device is adopted, the audio/video playing device cannot be arranged in a cab of the automobile, for example, a multimedia classroom or a meeting place, because the audio/video playing device such as a sound box is large in size, the audio/video playing device is generally not suitable to be directly arranged on the meeting place platform, and is usually arranged in a machine room or a single room, and then the audio/video playing device is arranged on the platform to display and control the device. Therefore, in these scenes, the display portion and the control portion of the audio/video playing apparatus are generally required to be separately provided from the apparatus body, in which case long-distance transmission of the stored digital audio/video signals is required, and an audio/video long-distance transmission control circuit is required to be designed.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an audio and video long-distance transmission control circuit aiming at the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the utility model provides an audio and video long distance transmission control circuit, includes input output interface circuit, receiving circuit, transmitting circuit, main control circuit, interaction circuit and power supply circuit, input output interface circuit's signal output part with receiving circuit's signal input part electricity is connected, receiving circuit's signal output part with transmitting circuit's signal input part electricity is connected, transmitting circuit's signal output part with main control circuit's signal input part electricity is connected, interaction circuit's signal input part with receiving circuit's signal output part electricity is connected, interaction circuit's signal output part with main control circuit's signal input part electricity is connected, power supply circuit respectively with input output interface circuit, receiving circuit, transmitting circuit, main control circuit and interaction circuit's power input part electricity is connected.
The beneficial effects of the utility model are as follows: according to the audio and video long-distance transmission control circuit, the audio and video signals are read through the input and output interface circuit, the two-way data transmission is carried out through the serial port and the receiving and transmitting circuit, and the control interaction is carried out through the main control circuit, so that the separation of the display and control part and the equipment main body part is realized, the audio and video long-distance transmission control circuit is suitable for being used in application scenes such as automobiles, multimedia teaching and meeting places, the transmission distance can reach more than 10 meters, the problem of long-distance transmission interference of the audio and video signals is solved, and the audio and video long-distance transmission control circuit is suitable for more personalized scenes.
Based on the technical scheme, the utility model can also be improved as follows:
further: the input-output interface circuit comprises a digital interface K7, a capacitor C19, a capacitor C32, a resistor R4, a triode Q2, a resistor R7, a resistor R1 and a resistor R5, wherein two differential signal pins of the digital interface K7 are correspondingly and electrically connected with two differential signal input ends of the receiving circuit through the capacitor C19 and the capacitor C32 respectively, the grounding end of the digital interface K7 is grounded, a 5V power supply is connected to the power supply input end, the signal transmitting end of the digital interface K7 is electrically connected with the collector electrode of the triode Q2 and the signal receiving end of the receiving circuit respectively, the collector electrode of the triode Q2 is electrically connected with the signal transmitting end of the receiving circuit as the signal receiving end, the base electrode of the triode Q2 is grounded through the resistor R5, the resistor R1 and the resistor R7 are sequentially connected in series between the base electrode and the collector electrode of the triode, the public end of the resistor R1 and the resistor R7 are electrically connected with the power supply output end of the power supply circuit, and the signal transmitting end of the digital interface K7 is electrically connected with the resistor R4.
The beneficial effects of the above-mentioned further scheme are: the digital interface K7 can be used for connecting the receiving circuits through serial lines, so that audio and video signals stored in the memory can be conveniently read, and the power supply circuit is used for controlling the on-off of the triode Q2, so that bidirectional data receiving and transmitting between the receiving circuits and the main control circuit are realized.
Further: the receiving circuit adopts a deserializer chip with the model DS90UR 904Q.
Further: the transmitting circuit adopts a serializer chip with the model DS90UR 903Q.
Further: the main control circuit adopts a singlechip with the model of STC8H1K16-36I-LQFP 32.
Further: the power supply circuit comprises a capacitor C2, a capacitor C3, a voltage conversion chip U2, a capacitor C7, a capacitor C8, a capacitor C20, a capacitor C21, a capacitor C6, a capacitor C11, a capacitor C12, a voltage conversion chip U3, a capacitor C9 and a capacitor C10, wherein the power supply input ends of the voltage conversion chip U2 and the voltage conversion chip U3 are respectively connected with 5V voltage, the capacitor C2 and the capacitor C3 are connected in parallel between the power supply input end of the voltage conversion chip U2 and the ground, the ground of the voltage conversion chip U2 is grounded, the capacitor C7, the capacitor C8, the capacitor C20, the capacitor C21 and the capacitor C6 are connected in parallel between the power supply output end of the voltage conversion chip U2 and the ground, the power output end of the voltage conversion chip U2 is respectively and electrically connected with the power input end of the input/output interface circuit, the first power input end of the receiving circuit, the first power input end of the transmitting circuit and the power input end of the main control circuit, the capacitor C11 and the capacitor C12 are connected in parallel between the power input end of the voltage conversion chip U3 and the ground, the grounding end of the voltage conversion chip U3 is grounded, the capacitor C9 and the capacitor C10 are connected in parallel between the power output end of the voltage conversion chip U3 and the ground, and the power output end of the voltage conversion chip U3 is respectively and electrically connected with the second power input end of the receiving circuit and the second power input end of the transmitting circuit.
The beneficial effects of the above-mentioned further scheme are: the voltage conversion chip U2 and the voltage conversion chip U3 can respectively convert 5V voltage into 3.3V and 1.8V, and respectively provide 3.3V voltage for the power input end of the input/output interface circuit, the first power input end of the receiving circuit, the first power input end of the transmitting circuit and the power input end of the main control circuit, and respectively provide voltage for the second power input end of the receiving circuit and the second power input end of the transmitting circuit, and the capacitor C2, the capacitor C3, the capacitor C7, the capacitor C8, the capacitor C20, the capacitor C21, the capacitor C6, the capacitor C11, the capacitor C12, the capacitor C9 and the capacitor C10 respectively play a role of filtering.
Further: the interactive circuit comprises a key circuit and a display circuit, wherein a signal output end of the key circuit is electrically connected with a signal input end of the main control circuit, a data signal input end of the display circuit is electrically connected with a data signal output end of the receiving circuit, and a control signal input end of the display circuit is electrically connected with a control signal output end of the main control circuit.
The beneficial effects of the above-mentioned further scheme are: the key circuit can conveniently input control instructions and working modes, and the display circuit can display played audio and video contents, working modes and working states.
Drawings
Fig. 1 is a schematic diagram of a frame structure of an audio/video long-distance transmission control circuit according to an embodiment of the utility model;
FIG. 2 is a schematic circuit diagram of an I/O interface circuit according to an embodiment of the utility model;
FIG. 3 is a schematic diagram of a power supply circuit according to an embodiment of the utility model;
FIG. 4 is a schematic circuit diagram of a key circuit according to an embodiment of the present utility model;
fig. 5 is a circuit diagram of a display circuit according to an embodiment of the utility model.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
As shown in fig. 1, the audio/video long-distance transmission control circuit comprises an input/output interface circuit, a receiving circuit, a transmitting circuit, a main control circuit, an interaction circuit and a power supply circuit, wherein the signal output end of the input/output interface circuit is electrically connected with the signal input end of the receiving circuit, the signal output end of the receiving circuit is electrically connected with the signal input end of the transmitting circuit, the signal output end of the transmitting circuit is electrically connected with the signal input end of the main control circuit, the signal input end of the interaction circuit is electrically connected with the signal output end of the receiving circuit, the signal output end of the interaction circuit is electrically connected with the signal input end of the main control circuit, and the power supply circuit is respectively electrically connected with the power input ends of the input/output interface circuit, the receiving circuit, the transmitting circuit, the main control circuit and the interaction circuit.
According to the audio and video long-distance transmission control circuit, the audio and video signals are read through the input and output interface circuit, the two-way data transmission is carried out through the serial port and the receiving and transmitting circuit, and the control interaction is carried out through the main control circuit, so that the separation of the display and control part and the equipment main body part is realized, the audio and video long-distance transmission control circuit is suitable for being used in application scenes such as automobiles, multimedia teaching and meeting places, the transmission distance can reach more than 10 meters, the problem of long-distance transmission interference of the audio and video signals is solved, and the audio and video long-distance transmission control circuit is suitable for more personalized scenes.
In one or more embodiments of the present utility model, as shown in fig. 2, the input/output interface circuit includes a digital interface K7, a capacitor C19, a capacitor C32, a resistor R4, a triode Q2, a resistor R7, a resistor R1 and a resistor R5, two differential signal pins of the digital interface K7 are respectively and correspondingly electrically connected to two differential signal input ends of the receiving circuit through the capacitor C19 and the capacitor C32, a ground connection of the digital interface K7 is grounded, a power input end is connected to a 5V power supply, a signal transmitting end of the digital interface K7 is respectively and electrically connected to a collector of the triode Q2 and a signal receiving end of the receiving circuit, a collector of the triode Q2 is electrically connected to a signal transmitting end of the receiving circuit, a base of the triode Q2 is grounded through the resistor R5, a common end of the resistor R1 and the resistor R7 is serially connected in sequence between the base and the collector of the triode, and the power supply end is electrically connected to the digital interface K4. The digital interface K7 can be used for connecting the receiving circuits through serial lines, so that audio and video signals stored in the memory can be conveniently read, and the power supply circuit is used for controlling the on-off of the triode Q2, so that bidirectional data receiving and transmitting between the receiving circuits and the main control circuit are realized.
In one or more embodiments of the utility model, the receive circuit employs a deserializer chip model DS90UR 904Q.
In one or more embodiments of the utility model, the transmit circuit employs a serializer chip model DS90UR 903Q.
In one or more embodiments of the present utility model, the main control circuit employs a single-chip microcomputer having a model number STC8H1K16-36I-LQFP 32.
As shown in fig. 3, in one or more embodiments of the present utility model, the power supply circuit includes a capacitor C2, a capacitor C3, a voltage conversion chip U2, a capacitor C7, a capacitor C8, a capacitor C20, a capacitor C21, a capacitor C6, a capacitor C11, a capacitor C12, a voltage conversion chip U3, a capacitor C9, and a capacitor C10, wherein power supply input terminals of the voltage conversion chip U2 and the voltage conversion chip U3 are respectively connected to 5V voltage, the capacitor C2 and the capacitor C3 are connected in parallel between the power supply input terminal of the voltage conversion chip U2 and the ground, the capacitor C7, the capacitor C8, the capacitor C20, the capacitor C21, and the capacitor C6 are connected in parallel between the power supply output terminal of the voltage conversion chip U2 and the ground, the power supply output terminal of the voltage conversion chip U2 is respectively connected to the power supply input terminal of the input output interface circuit, the first power supply input terminal of the receiving circuit, the power supply input terminal of the transmitting circuit and the power supply input terminal of the transmitting circuit are respectively connected in parallel, the voltage conversion chip U3 and the power supply input terminal of the voltage conversion chip U3 is connected in parallel to the power supply input terminal of the second power supply input terminal of the transmitting circuit, and the voltage conversion chip U3 is connected in parallel between the power supply input terminal of the transmitting circuit and the power supply circuit and the capacitor C3. The voltage conversion chip U2 and the voltage conversion chip U3 can respectively convert 5V voltage into 3.3V and 1.8V, and respectively provide 3.3V voltage for the power input end of the input/output interface circuit, the first power input end of the receiving circuit, the first power input end of the transmitting circuit and the power input end of the main control circuit, and respectively provide voltage for the second power input end of the receiving circuit and the second power input end of the transmitting circuit, and the capacitor C2, the capacitor C3, the capacitor C7, the capacitor C8, the capacitor C20, the capacitor C21, the capacitor C6, the capacitor C11, the capacitor C12, the capacitor C9 and the capacitor C10 respectively play a role of filtering.
In one or more embodiments of the present utility model, the interaction circuit includes a key circuit and a display circuit, a signal output terminal of the key circuit is electrically connected to a signal input terminal of the main control circuit, a data signal input terminal of the display circuit is electrically connected to a data signal output terminal of the receiving circuit, and a control signal input terminal of the display circuit is electrically connected to a control signal output terminal of the main control circuit. The key circuit can conveniently input control instructions and working modes, and the display circuit can display played audio and video contents, working modes and working states.
As shown in fig. 4, in the embodiment of the present utility model, the key circuit includes four keys K1, K2, K3 and K4, and is connected to the power supply through corresponding resistors, and is connected to the key signal input terminal of the main control circuit through corresponding capacitors.
As shown in fig. 5, the display circuit is composed of a liquid crystal display screen of lcd_bmtf200_rgb, an XC6206P282MR voltage stabilizer, and peripheral circuits.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. The audio and video long-distance transmission control circuit is characterized by comprising an input and output interface circuit, a receiving circuit, a transmitting circuit, a main control circuit, an interaction circuit and a power supply circuit, wherein the signal output end of the input and output interface circuit is electrically connected with the signal input end of the receiving circuit, the signal output end of the receiving circuit is electrically connected with the signal input end of the transmitting circuit, the signal output end of the transmitting circuit is electrically connected with the signal input end of the main control circuit, the signal input end of the interaction circuit is electrically connected with the signal output end of the receiving circuit, the signal output end of the interaction circuit is electrically connected with the signal input end of the main control circuit, and the power supply circuit is respectively electrically connected with the power input ends of the input and output interface circuit, the receiving circuit, the transmitting circuit, the main control circuit and the interaction circuit.
2. The audio/video long-distance transmission control circuit according to claim 1, wherein the input/output interface circuit comprises a digital interface K7, a capacitor C19, a capacitor C32, a resistor R4, a triode Q2, a resistor R7, a resistor R1 and a resistor R5, two differential signal pins of the digital interface K7 are correspondingly and electrically connected with two differential signal input ends of the receiving circuit through the capacitor C19 and the capacitor C32 respectively, the grounding end of the digital interface K7 is grounded, the power input end is connected with a 5V power supply, the signal transmitting end of the digital interface K7 is electrically connected with the collector electrode of the triode Q2 and the signal receiving end of the receiving circuit respectively, the collector electrode of the triode Q2 is electrically connected with the signal transmitting end of the receiving circuit as the signal receiving end, the base electrode of the triode Q2 is grounded through the resistor R5, the resistor R1 and the resistor R7 are sequentially connected in series between the base electrode and the collector electrode of the triode, the public end of the resistor R1 and the resistor R7 is connected with the power supply end of the power supply end, and the digital interface is connected with the power supply end of the digital interface R4.
3. The audio/video long-distance transmission control circuit according to claim 1, wherein the receiving circuit adopts a deserializer chip with a model DS90UR 904Q.
4. The audio/video long-distance transmission control circuit according to claim 1, wherein the transmitting circuit is a serializer chip of a model DS90UR 903Q.
5. The audio/video long-distance transmission control circuit according to claim 1, wherein the main control circuit is a single chip microcomputer with a model of STC8H1K16-36I-LQFP 32.
6. The audio/video long-distance transmission control circuit according to claim 1, wherein: the power supply circuit comprises a capacitor C2, a capacitor C3, a voltage conversion chip U2, a capacitor C7, a capacitor C8, a capacitor C20, a capacitor C21, a capacitor C6, a capacitor C11, a capacitor C12, a voltage conversion chip U3, a capacitor C9 and a capacitor C10, wherein the power supply input ends of the voltage conversion chip U2 and the voltage conversion chip U3 are respectively connected with 5V voltage, the capacitor C2 and the capacitor C3 are connected in parallel between the power supply input end of the voltage conversion chip U2 and the ground, the ground of the voltage conversion chip U2 is grounded, the capacitor C7, the capacitor C8, the capacitor C20, the capacitor C21 and the capacitor C6 are connected in parallel between the power supply output end of the voltage conversion chip U2 and the ground, the power output end of the voltage conversion chip U2 is respectively and electrically connected with the power input end of the input/output interface circuit, the first power input end of the receiving circuit, the first power input end of the transmitting circuit, the power input end of the main control circuit and the power input end of the interaction circuit, the capacitor C11 and the capacitor C12 are connected in parallel between the power input end of the voltage conversion chip U3 and the ground, the grounding ground of the voltage conversion chip U3 is grounded, the capacitor C9 and the capacitor C10 are connected in parallel between the power output end of the voltage conversion chip U3 and the ground, and the power output end of the voltage conversion chip U3 is respectively and electrically connected with the second power input end of the receiving circuit and the second power input end of the transmitting circuit.
7. The audio/video long-distance transmission control circuit according to any one of claims 1 to 6, wherein the interactive circuit comprises a key circuit and a display circuit, a signal output end of the key circuit is electrically connected with a signal input end of the main control circuit, a data signal input end of the display circuit is electrically connected with a data signal output end of the receiving circuit, and a control signal input end of the display circuit is electrically connected with a control signal output end of the main control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320060197.2U CN219087185U (en) | 2023-01-10 | 2023-01-10 | Audio and video long-distance transmission control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320060197.2U CN219087185U (en) | 2023-01-10 | 2023-01-10 | Audio and video long-distance transmission control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN219087185U true CN219087185U (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320060197.2U Active CN219087185U (en) | 2023-01-10 | 2023-01-10 | Audio and video long-distance transmission control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN219087185U (en) |
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2023
- 2023-01-10 CN CN202320060197.2U patent/CN219087185U/en active Active
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