CN212811870U - Visual interphone circuit and visual interphone - Google Patents
Visual interphone circuit and visual interphone Download PDFInfo
- Publication number
- CN212811870U CN212811870U CN202021760662.6U CN202021760662U CN212811870U CN 212811870 U CN212811870 U CN 212811870U CN 202021760662 U CN202021760662 U CN 202021760662U CN 212811870 U CN212811870 U CN 212811870U
- Authority
- CN
- China
- Prior art keywords
- circuit
- video
- capacitor
- interphone
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model provides a visual intercom circuit and visual intercom, through adopting sound collection circuit, video collection circuit, wireless transmitting circuit, wireless receiving circuit, sound playback circuit and video playback circuit, the collection of sound and image has been realized, transmission, storage and broadcast, two-way audio frequency and video's transmission, storage and real-time display between the intercom has been realized promptly for can observe the site conditions of the other side through audio frequency and video real-time between the both sides of intercom, the problem that exists in traditional intercom and cause both sides to communicate inconveniently because can't transmit the video has been solved.
Description
Technical Field
The application belongs to the technical field of talkback equipment, especially, relate to a visual intercom circuit and visual intercom.
Background
At present, the traditional interphone generally only has the transmission of sound, and can not transmit video, so that two parties can not observe the site condition of the other party in time, and the problem of inconvenient communication is caused
Therefore, the traditional interphone has the problem that the two parties cannot communicate conveniently due to the fact that videos cannot be transmitted.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a visual interphone circuit and a visual interphone, aiming at solving the problem that the traditional interphone cannot transmit video to cause inconvenience in communication between two parties.
The first aspect of this application embodiment provides a visual intercom circuit, sets up in first intercom, first intercom and second intercom phase-match, visual intercom circuit includes:
the sound acquisition circuit is used for acquiring sound and converting the sound into a first audio signal;
the video acquisition circuit is used for shooting images and converting the images into first video signals;
the wireless transmitting circuit is connected with the sound collecting circuit and the video collecting circuit and is used for outputting the first audio signal and the first video signal to the second interphone in a wireless mode;
the wireless receiving circuit is used for receiving and storing a second audio signal and a second video signal output by the second interphone;
the sound playback circuit is connected with the wireless receiving circuit and is used for amplifying and playing the second audio signal; and
and the video playing circuit is connected with the wireless receiving circuit and is used for decoding and playing the second video signal.
In one embodiment, the sound collection circuit includes: a microphone, a first transistor, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, the first end of the first capacitor, the first end of the first resistor and the first end of the second resistor are connected to a first power supply in common, the output end of the microphone is connected with the first end of the second capacitor, the first end of the third capacitor and the second end of the first resistor, the second end of the second resistor, the first end of the third resistor, the first end of the fourth capacitor and the high potential end of the first transistor are connected in common, a second terminal of the third capacitor is connected to a second terminal of the third resistor and a control terminal of the first transistor, the second end of the fourth capacitor is connected with the wireless transmitting circuit, and the second end of the first capacitor, the second end of the second capacitor and the low potential end of the first transistor are grounded.
In one embodiment, the video capture circuitry comprises:
a camera for capturing an image;
the image sensor is connected with the camera and used for converting the image into a first video signal;
the crystal oscillator circuit is connected with the image sensor and used for providing a target oscillation frequency to the image sensor;
the storage circuit is connected with the image sensor and is used for storing working data of the image sensor; and
and the voltage stabilizing circuit is connected with the second power supply, the image sensor and the storage circuit and is used for converting the voltage of the second power supply into a stable target voltage and outputting the stable target voltage to the image sensor and the storage circuit.
In one embodiment, the wireless transmit circuitry comprises: the first input end of the wireless transmitting chip is connected with the sound collecting circuit, the second input end of the wireless transmitting chip is connected with the video collecting circuit, and the transmitting end of the wireless transmitting chip is connected with the first antenna.
In one embodiment, the modulation frequency of the wireless transmitting chip is 2.4Ghz or 5.8 Ghz.
In one embodiment, the wireless receiving circuit comprises: the receiving end of the wireless receiving chip is connected with the second antenna, the first output end of the wireless receiving chip is connected with the sound playback circuit, and the second output end of the wireless receiving chip is connected with the video playing circuit.
In one embodiment, the sound playback circuit comprises: the audio power amplifier circuit comprises an audio power amplifier circuit and a loudspeaker, wherein the input end of the audio power amplifier circuit is connected with the wireless receiving circuit, and the output end of the audio power amplifier circuit is connected with the loudspeaker.
In one embodiment, the video playback circuit includes: the wireless receiving circuit comprises a video decoding circuit and a display screen, wherein the input end of the video decoding circuit is connected with the wireless receiving circuit, and the output end of the video decoding circuit is connected with the display screen.
In one embodiment, the video playback circuit further includes a power control circuit, the power control circuit is connected to a third power supply, the video decoding circuit and the display screen, and the power control circuit is configured to turn on or off the connection between the third power supply and the display screen under the control of the video decoding circuit.
A second aspect of the embodiments of the present application provides a visual interphone, including: the visual interphone circuit according to the first aspect of the embodiment of the application.
According to the visual interphone circuit, the sound acquisition circuit, the video acquisition circuit, the wireless transmitting circuit, the wireless receiving circuit, the sound playback circuit and the video playing circuit are adopted, so that the sound and the image are acquired, transmitted, stored and played, namely, the bidirectional audio and video transmission, storage and real-time display between the interphones are realized, the site condition of the other party can be observed between the two parties of the interphone in real time through audio and video, and the problem that the two parties are inconvenient to communicate due to the fact that the video cannot be transmitted in the traditional interphone is solved.
Drawings
Fig. 1 is a schematic circuit diagram of a video interphone circuit according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an exemplary circuit for a sound acquisition circuit in the video interphone circuit shown in FIG. 1;
FIG. 3 is a schematic circuit diagram of a video acquisition circuit in the video interphone circuit shown in FIG. 1;
FIG. 4 is an exemplary circuit schematic of a crystal oscillator circuit in the video capture circuit shown in FIG. 3;
fig. 5 is a schematic circuit diagram of a wireless transmitting circuit in the video interphone circuit shown in fig. 1;
FIG. 6 is a schematic circuit diagram of a wireless receiving circuit in the video interphone circuit shown in FIG. 1;
FIG. 7 is a schematic circuit diagram of an audio playback circuit in the video interphone circuit shown in FIG. 1;
fig. 8 is a schematic circuit diagram of a video playback circuit in the video interphone circuit shown in fig. 1;
fig. 9 is another circuit schematic diagram of a video playback circuit in the video interphone circuit shown in fig. 8;
fig. 10 is a schematic diagram of an exemplary circuit for a power control circuit in the video playback circuit shown in fig. 9.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 shows a circuit schematic diagram of a visual interphone circuit 10 provided by a first aspect of an embodiment of the present application, and for convenience of description, only parts related to the embodiment are shown, and detailed descriptions are as follows:
the video interphone circuit 10 in this embodiment is disposed in a first interphone, and the first interphone is matched with a second interphone 20, it should be understood that the matching between the first interphone and the second interphone 20 is the matching between the conventional interphones, for example, the matching is performed by setting the same frequency points, or the matching is performed by bluetooth, etc. The second interphone 20 is provided with the same visual interphone circuit 10 as the present embodiment.
The video interphone circuit 10 in this embodiment includes: sound collection circuit 100, video collection circuit 200, wireless transmission circuit 300, wireless receiving circuit 400, sound playback circuit 500, and video playback circuit 600. The output end of the sound collection circuit 100 is connected with the first input end of the wireless transmission circuit 300, the output end of the video collection circuit 200 is connected with the second input end of the wireless transmission circuit 300, the input end of the sound playback circuit 500 is connected with the first output end of the wireless receiving circuit 400, and the input end of the video playing circuit 600 is connected with the second output end of the wireless receiving circuit 400. The sound collection circuit 100 is used for collecting sound and converting the sound into a first audio signal; the video acquisition circuit 200 is used for shooting images and converting the images into first video signals; the wireless transmission circuit 300 is configured to wirelessly output the first audio signal and the first video signal to the second intercom 20; the wireless receiving circuit 400 is used for receiving and storing the second audio signal and the second video signal output by the second interphone 20; the sound playback circuit 500 is used for amplifying and playing the second audio signal; the video playback circuit 600 is used to decode and play back the second video signal.
It is understood that the sound collection circuit 100 may be formed of an energy converter that converts a sound signal into an electrical signal, such as a microphone M1, microphone, or the like. The video capture circuit 200 may be comprised of a camera, an image sensor 220, and the like. The wireless transmission circuit 300 may be constituted by a wireless transmission module and an antenna. The wireless receiving circuit 400 may be constituted by a wireless receiving module and an antenna. The sound playback circuit 500 may be composed of an audio amplification circuit and an audio player, and the audio player may be a speaker 520, a sound box, or the like. The video playback circuit 600 may be formed with a video decoding chip and a display screen 620.
It is to be understood that the first audio signal, the second audio signal, the first video signal and the second video signal are electrical signals.
The video interphone circuit 10 in this embodiment, by using the sound collection circuit 100, the video collection circuit 200, the wireless transmission circuit 300, the wireless receiving circuit 400, the sound playback circuit 500 and the video playing circuit 600, realizes the collection, transmission, storage and playing of sound and images, i.e., realizes the transmission, storage and real-time display of two-way audio and video between the interphones, so that the two parties of the interphones can observe the field situation of the other party in real time through audio and video, and the problem of inconvenient communication between the two parties due to the fact that video cannot be transmitted in the conventional interphones is solved.
Referring to fig. 2, in one embodiment, the sound collection circuit 100 includes: a microphone M1, a first transistor Q1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4, a first end of a first capacitor C1, a first end of a first resistor R1, and a first end of a second resistor R2 are commonly connected to a first power source V1, an output end of a microphone M1 is connected to a first end of a second capacitor C2, a first end of a third capacitor C3, and a second end of a first resistor R1, a second end of the second resistor R2, a first end of a third resistor R3, a first end of a fourth capacitor C4, and a high-potential end of a first transistor Q1 are commonly connected, a second end of the third capacitor C3 is connected to a second end of a third resistor R3, and a control end of the first transistor Q1, a second end of the fourth capacitor C4 is connected to the wireless transmission circuit 300, and a second end of the first capacitor C1, a second end of the second capacitor C2, and a low-potential end of the first transistor Q1 are grounded.
It should be understood that the first transistor Q1 may be a transistor with controllable amplification function, such as a triode or a MOS transistor. In this embodiment, the first transistor Q1 is an NPN transistor, a base of the NPN transistor is a control terminal of the first transistor Q1, a collector of the NPN transistor is a high potential terminal of the first transistor Q1, and an emitter of the NPN transistor is a low potential terminal of the first transistor Q1.
It should be understood that the microphone M1 in this embodiment converts the collected sound into a first audio signal, the first audio signal is amplified by the amplifying circuit composed of the first transistor Q1, the first resistor R1, the second resistor R2 and the third resistor R3, and the fourth capacitor C4 is used for filtering noise to losslessly output the amplified first audio signal to the wireless transmitting circuit 300. The first capacitor C1 is used for filtering the output noise of the first power supply V1. The second capacitor C2 and the third capacitor C3 are used for filtering out noise waves of the first audio signal before amplification. The first power source V1 may be a battery or other external power source.
The sound collection circuit 100 in this embodiment adopts the microphone M1, the first transistor Q1, the first resistor R1, the second resistor R2, the third resistor R3, the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4, so that sound collection, conversion, amplification, and lossless transmission are realized, and occurrence of situations that the sound is too small to be identified and the audio signal distortion is too large due to clutter interference in the transmission process is avoided.
Referring to fig. 3, in one embodiment, the video capture circuit 200 includes: a camera 210, an image sensor 220, a crystal oscillator circuit 230, a memory circuit 240, and a voltage stabilizing circuit 250. The camera 210, the crystal oscillator circuit 230 and the storage circuit 240 are respectively connected with the image sensor 220, the image sensor 220 is connected with the wireless transmitting circuit 300, and the voltage stabilizing circuit 250 is connected with the second power supply V2, the image sensor 220 and the storage circuit 240. The camera 210 is used for shooting images; the image sensor 220 is used for converting an image into a first video signal; the crystal oscillator circuit 230 is used for providing a target oscillation frequency to the image sensor 220; the storage circuit 240 is used for storing the working data of the image sensor 220; the voltage stabilizing circuit 250 serves to convert the voltage of the second power source V2 into a stabilized target voltage and output it to the image sensor 220 and the memory circuit 240.
It should be understood that the image sensor 220 in the present embodiment is a Complementary Metal-Oxide-Semiconductor (CMOS) sensor, and in other embodiments, other types of image sensors 220 may be used. The storage circuit 240 in this embodiment may be formed by a power-down storage chip, and is used for storing the working data of the image sensor 220 in time in case of sudden power failure. The crystal oscillator circuit 230 may be constituted by a crystal oscillator. The voltage stabilizing circuit 250 may be formed of a voltage stabilizing chip.
It should be understood that the operation data of the image sensor 220 includes video and sound, operation parameters, and the like. The target oscillation frequency is the operating frequency of the image sensor 220. The target voltage is an operating voltage of the image sensor 220. The second power source V2 may be a battery or other external power source.
The video capture circuit 200 in this embodiment implements image capture and conversion by using the camera 210 and the image sensor 220, and ensures normal operation of the image sensor 220 and timely storage of data by adding the crystal oscillator circuit 230, the storage circuit 240, and the voltage regulator circuit 250.
Referring to fig. 4, in an embodiment, the crystal oscillation circuit 230 includes a crystal oscillator J1, a fourth resistor R4, a fifth capacitor C5 and a sixth capacitor C6, a first end of the crystal oscillator J1, a first end of the fourth resistor R4 and a first end of the fifth capacitor C5 are commonly connected to the first input terminal of the image sensor 220, a second end of the crystal oscillator J1, a second end of the fourth resistor R4 and a first end of the sixth capacitor C6 are commonly connected to the second input terminal of the image sensor 220, a second end of the fifth capacitor C5 is grounded, and a second end of the sixth capacitor C6 is grounded.
Referring to fig. 5, in one embodiment, the wireless transmitting circuit 300 includes: the wireless transmission device comprises a wireless transmission chip 310 and a first antenna 320, wherein a first input end of the wireless transmission chip 310 is connected with the sound acquisition circuit 100, a second input end of the wireless transmission chip 310 is connected with the video acquisition circuit 200, and a transmission end of the wireless transmission chip 310 is connected with the first antenna 320.
It should be understood that the modulation frequency of the wireless transmitting chip 310 may be 2.4Ghz or 5.8 Ghz. The modulation type of the wireless transmitting chip 310 may be FM, that is, the first audio signal and the first video signal are wirelessly transmitted by FM frequency modulation carrier. The first antenna 320 is a transmit antenna. The wireless transmitting chip 310 in this embodiment is provided with the model number HY200T, and in other embodiments, other models of wireless transmitting chips 310 may be provided.
Referring to fig. 6, in one embodiment, the wireless receiving circuit 400 includes: the wireless receiving chip 410 is connected to the second antenna 420, the receiving end of the wireless receiving chip 410 is connected to the second antenna 420, the first output end of the wireless receiving chip 410 is connected to the audio playback circuit 500, and the second output end of the wireless receiving chip 410 is connected to the video playback circuit 600.
It should be understood that the modulation frequency of the wireless receiving chip 410 may be 2.4Ghz or 5.8 Ghz. The modulation type of the wireless receiving chip 410 may be FM, that is, the second audio signal and the second video signal are wirelessly transmitted by FM frequency modulation carrier. The second antenna 420 is a receiving antenna. The wireless receiving chip 410 in this embodiment is provided with the model HY206R, but in other embodiments, other models of wireless receiving chips 410 may be provided.
Referring to fig. 7, in one embodiment, the sound playback circuit 500 includes: the audio power amplifier circuit 510 is connected to the speaker 520, the input terminal of the audio power amplifier circuit 510 is connected to the wireless receiving circuit 400, and the output terminal of the audio power amplifier circuit 510 is connected to the speaker 520.
It should be understood that the audio power amplifying circuit 510 in this embodiment is used for amplifying the second audio signal and driving the speaker 520 to emit sound. The audio power amplifier circuit 510 in this embodiment adopts a mono audio power amplifier chip with a model number LN4890, and in other embodiments, other models of power amplifier chips may also be adopted.
The sound playback circuit 500 in this embodiment implements amplification and playing of an audio signal by using the audio power amplification circuit 510 and the speaker 520, and has a simple circuit structure and a small occupied space.
Referring to fig. 8, in one embodiment, the video playback circuit 600 includes: the video decoding circuit 610 is connected with the display screen 620, the input end of the video decoding circuit 610 is connected with the wireless receiving circuit 400, and the output end of the video decoding circuit 610 is connected with the display screen 620.
It should be understood that the video decoding circuit 610 in the present embodiment is used to decode the second video signal. The video decoding circuit 610 in this embodiment adopts a microprocessor with a model R7F0C00X, and in other embodiments, other models of video decoding chips may be adopted. The display 620 in this embodiment is a digital LCD display panel, and in other embodiments, other types of display 620 may be used.
Referring to fig. 9, in an embodiment, the video playback circuit 600 further includes a power control circuit 630, the power control circuit 630 is connected to the third power supply 30, the video decoding circuit 610 and the display screen 620, and the power control circuit 630 is configured to turn on or off the connection between the third power supply 30 and the display screen 620 under the control of the video decoding circuit 610.
It should be understood that the video decoding circuit 610 may output a control signal to control the power control circuit 630 to be turned off according to whether the decoded second video signal is output to the display screen 620, for example, when the video decoding circuit 610 outputs to the display screen 620, the video decoding circuit 610 outputs the control signal with high level to control the power control circuit 630 to be turned on, so that the third power supply 30 normally supplies power to the display screen 620; when the video decoding circuit 610 does not output to the display screen 620, the video decoding circuit 610 outputs a low-level control signal to control the power control circuit 630 to be turned off, so that the third power supply 30 stops supplying power to the display screen 620, and the display screen 620 is turned off.
In the video playback circuit 600 in this embodiment, the power control circuit 630 is added to control the power on of the display screen 620, so that when the video decoding circuit 610 does not output to the display screen 620, the display screen 620 is turned off, thereby saving energy consumption.
Referring to fig. 10, the power control circuit 630 includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a seventh capacitor C7, a first switch tube Q2 and a second switch tube Q3, a first end of the fifth resistor R5 is connected to the video decoding circuit 610, a second end of the fifth resistor R5, a first end of the sixth resistor R6 and a control end of the second switch tube Q3 are connected in common, a second end of the sixth resistor R6 is connected to ground, a low potential end of the second switch tube Q3 is connected to ground, a high potential end of the second switch tube Q3 and a control end of the first switch tube Q2 and a second end of the seventh resistor R7 are connected in common, a first end of the seventh resistor R7 and a high potential end of the first switch tube Q2 are connected to the third power supply 30, a low potential end of the first switch tube Q2 and a second end of the seventh capacitor C7 are connected to the positive potential end of the third switch tube Q7, a second end of the display screen R9634 and a second end of the display screen 8, a second terminal of the eighth resistor R8 is connected to the cathode of the display screen 620.
It should be understood that the first power source V1, the second power source V2, and the third power source 30 in this embodiment may be the same power source or different power sources.
A second aspect of the embodiments of the present application provides a visual interphone, including: the video interphone circuit 10 according to the first aspect of the embodiment of the present application.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. The utility model provides a visual intercom circuit sets up in first intercom, first intercom and second intercom phase-match, its characterized in that, visual intercom circuit includes:
the sound acquisition circuit is used for acquiring sound and converting the sound into a first audio signal;
the video acquisition circuit is used for shooting images and converting the images into first video signals;
the wireless transmitting circuit is connected with the sound collecting circuit and the video collecting circuit and is used for outputting the first audio signal and the first video signal to the second interphone in a wireless mode;
the wireless receiving circuit is used for receiving and storing a second audio signal and a second video signal output by the second interphone;
the sound playback circuit is connected with the wireless receiving circuit and is used for amplifying and playing the second audio signal; and
and the video playing circuit is connected with the wireless receiving circuit and is used for decoding and playing the second video signal.
2. The visual interphone circuit of claim 1, wherein the sound collecting circuit comprises: a microphone, a first transistor, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, the first end of the first capacitor, the first end of the first resistor and the first end of the second resistor are connected to a first power supply in common, the output end of the microphone is connected with the first end of the second capacitor, the first end of the third capacitor and the second end of the first resistor, the second end of the second resistor, the first end of the third resistor, the first end of the fourth capacitor and the high potential end of the first transistor are connected in common, a second terminal of the third capacitor is connected to a second terminal of the third resistor and a control terminal of the first transistor, the second end of the fourth capacitor is connected with the wireless transmitting circuit, and the second end of the first capacitor, the second end of the second capacitor and the low potential end of the first transistor are grounded.
3. The video interphone circuit of claim 1, wherein the video capture circuit comprises:
a camera for capturing an image;
the image sensor is connected with the camera and used for converting the image into a first video signal;
the crystal oscillator circuit is connected with the image sensor and used for providing a target oscillation frequency to the image sensor;
the storage circuit is connected with the image sensor and is used for storing working data of the image sensor; and
and the voltage stabilizing circuit is connected with the second power supply, the image sensor and the storage circuit and is used for converting the voltage of the second power supply into a stable target voltage and outputting the stable target voltage to the image sensor and the storage circuit.
4. The visual interphone circuit of claim 1, wherein the wireless transmitting circuit comprises: the first input end of the wireless transmitting chip is connected with the sound collecting circuit, the second input end of the wireless transmitting chip is connected with the video collecting circuit, and the transmitting end of the wireless transmitting chip is connected with the first antenna.
5. A visual interphone circuit according to claim 4 characterized in that the modulation frequency of the wireless transmitting chip is 2.4 or 5.8 Ghz.
6. A visual interphone circuit according to any of the claims 1 to 5 characterized in that the wireless receiving circuit comprises: the receiving end of the wireless receiving chip is connected with the second antenna, the first output end of the wireless receiving chip is connected with the sound playback circuit, and the second output end of the wireless receiving chip is connected with the video playing circuit.
7. A visual interphone circuit according to any of the claims 1 to 5 characterized in that the sound playback circuit comprises: the audio power amplifier circuit comprises an audio power amplifier circuit and a loudspeaker, wherein the input end of the audio power amplifier circuit is connected with the wireless receiving circuit, and the output end of the audio power amplifier circuit is connected with the loudspeaker.
8. A visual interphone circuit according to any of the claims 1 to 5 characterized in that the video player circuit comprises: the wireless receiving circuit comprises a video decoding circuit and a display screen, wherein the input end of the video decoding circuit is connected with the wireless receiving circuit, and the output end of the video decoding circuit is connected with the display screen.
9. A video interphone circuit as in claim 8 wherein the video player circuit further comprises a power control circuit connected to a third power source, the video decoder circuit and the display screen, the power control circuit is used to turn on or off the third power source to the display screen under the control of the video decoder circuit.
10. A visual interphone is characterized by comprising:
the video interphone circuit according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021760662.6U CN212811870U (en) | 2020-08-19 | 2020-08-19 | Visual interphone circuit and visual interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021760662.6U CN212811870U (en) | 2020-08-19 | 2020-08-19 | Visual interphone circuit and visual interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212811870U true CN212811870U (en) | 2021-03-26 |
Family
ID=75084605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021760662.6U Active CN212811870U (en) | 2020-08-19 | 2020-08-19 | Visual interphone circuit and visual interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212811870U (en) |
-
2020
- 2020-08-19 CN CN202021760662.6U patent/CN212811870U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2005276865B2 (en) | The nasal bone conduction wireless communication transmission equipment | |
| CN112118517B (en) | Audio chip and terminal | |
| CN212811870U (en) | Visual interphone circuit and visual interphone | |
| CN203537473U (en) | Video signal change-over box | |
| CN101056395B (en) | Radio visual doorbell of the mobile communication system | |
| CN105792016A (en) | Television system with access control function | |
| CN201763194U (en) | Wireless electronic cat eye intercom device | |
| CN201134803Y (en) | Bluetooth wireless microphone | |
| CN211183996U (en) | Remote control detection device and system | |
| CN210958669U (en) | Screen display and sound box integrated equipment with communication function | |
| CN111010643B (en) | Earphone charging box and infrared remote control device | |
| CN209861093U (en) | Active sound box and passive sound box with wired and wireless inner recording and live broadcasting | |
| CN103139536A (en) | Multi-functional wireless monitor | |
| CN207266178U (en) | Multimedia system based on intelligent meeting all-in-one machine | |
| CN108989866B (en) | Multimedia remote control device | |
| CN101193222A (en) | A device for getting and playing video and audio data | |
| CN211731282U (en) | Control circuit of vehicle-mounted microphone and vehicle-mounted system | |
| CN211930812U (en) | Sound pickup and playback apparatus and sound pickup and playback control circuit | |
| CN220493135U (en) | Microphone receiver, microphone transmitter and microphone assembly | |
| CN203632788U (en) | Network conference terminal whose audio signals are anti-electromagnetic interference | |
| CN212381301U (en) | Be suitable for in subway train video recorder | |
| CN209861030U (en) | Digital voice and video baby monitor | |
| CN202353548U (en) | Multifunctional conversation emitter for obtaining evidences by wireless detection and monitoring | |
| CN218830083U (en) | Recorded broadcast host computer circuit and recorded broadcast host computer | |
| CN219802530U (en) | Low-power consumption wireless microphone based on E-type radio frequency power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |