CN113347383A - Signal transmitting and receiving method, device, storage medium, and electronic device - Google Patents
Signal transmitting and receiving method, device, storage medium, and electronic device Download PDFInfo
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- CN113347383A CN113347383A CN202110627520.5A CN202110627520A CN113347383A CN 113347383 A CN113347383 A CN 113347383A CN 202110627520 A CN202110627520 A CN 202110627520A CN 113347383 A CN113347383 A CN 113347383A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
Abstract
The embodiment of the invention provides a signal sending method and a signal receiving method, a device, a storage medium and an electronic device, wherein the signal sending method comprises the following steps: performing signal processing on the control signal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment; synthesizing the video signal, the power signal and the target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment; the composite signal is transmitted to the image pickup apparatus through the coaxial cable to instruct the image pickup apparatus to demodulate the control signal, the video signal, and the power signal from the composite signal. The invention solves the problem that the signal transmission system in the related technology is complex, and achieves the effects of simplifying the signal transmission device and saving transmission resources.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a signal sending and receiving method, a signal sending and receiving device, a signal receiving device, a storage medium and an electronic device.
Background
At present, with the continuous development of the social video conference technology, people have continuously improved definition of video signal sources, the definition is gradually changed from analog signals to digital signals, the definition is gradually changed from the aspect of separately transmitting images and audios to the aspect of digital integration of the images and the audios, and the transmission of various control signals makes the whole video conference system become more and more complex. In a traditional video conference system, a video conference terminal transmits a Digital component Serial Interface (SDI) video signal to a camera terminal through a coaxial cable, the camera terminal needs an additional power supply system to supply power, and meanwhile, in order to realize control over the camera terminal, the video conference terminal needs to provide an additional hardware control channel, such as RS422/RS485/RS232 signals, and the like, so that the system connection cost and the maintenance difficulty of hardware are increased.
In view of the above technical problems, no effective solution has been proposed in the related art.
Disclosure of Invention
The embodiment of the invention provides a signal sending and receiving method, a signal sending and receiving device, a storage medium and an electronic device, and at least solves the problem that a signal transmission system in the related technology is complex.
According to an embodiment of the present invention, there is provided a signal transmission method including: performing signal processing on a control signal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment; synthesizing a video signal, a power signal and a target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment; and sending the composite signal to the image pickup equipment through a coaxial cable so as to instruct the image pickup equipment to demodulate the control signal, the video signal and the power supply signal from the composite signal.
According to another embodiment of the present invention, there is provided a signal receiving method including: receiving a composite signal sent by a video conference terminal through a coaxial cable; and demodulating a control signal, a video signal and a power signal from the composite signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment, the power signal is used for supplying power to the shooting equipment, and the video signal is displayed through the shooting equipment.
According to another embodiment of the present invention, there is provided a signal transmission apparatus including: the first processing module is used for carrying out signal processing on the control signal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment; the first synthesis module is used for synthesizing a video signal, a power supply signal and a target control signal to obtain a synthesized signal, wherein the power supply signal is used for supplying power to the camera equipment; and a first sending module, configured to send the composite signal to the image pickup apparatus through a coaxial cable, so as to instruct the image pickup apparatus to demodulate the control signal, the video signal, and the power signal from the composite signal.
In an exemplary embodiment, the first processing module includes: the first amplifying unit is used for amplifying the control signal to obtain an amplified control signal; and the first processing unit is used for processing the amplified control signal through a protection circuit and an isolation circuit to obtain the target control signal.
In an exemplary embodiment, the first synthesizing module includes: the first coding unit is used for carrying out digital component serial interface SDI coding on the video signal to obtain an SDI signal; and a first loading unit, configured to load the target control signal into the SDI signal and the power signal to obtain the composite signal.
In an exemplary embodiment, the apparatus further includes: the first adjusting module is used for synthesizing the video signal, the power supply signal and the target control signal, and adjusting the voltage of the electric signal generated by the power adapter to a preset voltage before the synthesized signal is obtained, so that the power supply signal is obtained.
According to another embodiment of the present invention, there is provided a signal receiving apparatus including: the first receiving module is used for receiving a composite signal sent by the video conference terminal through a coaxial cable; the first demodulation module is used for demodulating a control signal, a video signal and a power signal from the composite signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment, the power signal is used for supplying power to the shooting equipment, and the video signal is displayed through the shooting equipment.
In an exemplary embodiment, the first demodulation module includes: and a first demodulation unit for demodulating the control signal, the video signal and the power signal from the synthesized signal through a frequency-selective wave demodulation circuit.
In an exemplary embodiment, the apparatus further includes: a power supply module, configured to demodulate a control signal, a video signal, and a power signal from the synthesized signal, and supply power to the image pickup device using the power signal; the first determining module is used for determining the shooting parameters of the shooting equipment according to the control signal; and the second sending module is used for sending the video signal to a display so as to display the video signal in the display.
According to a further embodiment of the present invention, there is also provided a computer-readable storage medium having a computer program stored thereon, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
According to the invention, the control signal is processed through the video conference terminal to obtain the target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment; synthesizing a video signal, a power signal and a target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment; and sending the composite signal to the image pickup equipment through a coaxial cable so as to instruct the image pickup equipment to demodulate the control signal, the video signal and the power supply signal from the composite signal. Therefore, the purposes of synthesizing different signals into one signal for transmission and reducing the complexity of hardware are achieved. Therefore, the problem that a signal transmission system in the related technology is complex can be solved, and the effects of simplifying a signal transmission device and saving transmission resources are achieved.
Drawings
Fig. 1 is a block diagram of a hardware configuration of a mobile terminal of a signal transmission method according to an embodiment of the present invention;
fig. 2 is a flowchart of a signal transmission method according to an embodiment of the present invention;
fig. 3 is a flowchart of a signal receiving method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of signal interaction between a video conference terminal and a camera terminal according to an embodiment of the present invention;
fig. 5 is a system control block diagram of SDI video communication serial port transmission according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a coaxial cable transmitting a video signal according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a coaxial cable transmission power supply according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a coaxial cable transmitting three signals simultaneously according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a frequency selective filter demodulation circuit according to an embodiment of the present invention;
fig. 10 is a block diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 11 is a block diagram of a signal receiving apparatus according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in conjunction with the embodiments.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The method embodiments provided in the embodiments of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking an example of the present invention running on a mobile terminal, fig. 1 is a block diagram of a hardware structure of a mobile terminal of a signal transmission method according to an embodiment of the present invention. As shown in fig. 1, the mobile terminal may include one or more (only one shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), and a memory 104 for storing data, wherein the mobile terminal may further include a transmission device 106 for communication functions and an input-output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as computer programs corresponding to the signal transmission method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, that is, implements the above-mentioned method. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In the present embodiment, a signal transmission method is provided, and fig. 2 is a flowchart of the signal transmission method according to the embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202, performing signal processing on the control signal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment;
step S204, synthesizing the video signal, the power signal and the target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment;
and step S206, transmitting the composite signal to the image pickup equipment through the coaxial cable so as to instruct the image pickup equipment to demodulate a control signal, a video signal and a power supply signal from the composite signal.
The embodiment includes but is not limited to the application in the scenes of video conference terminals, power transmission on cameras, video transmission and control signal transmission.
The main body of the above steps may be a video conference terminal, etc., but is not limited thereto.
In the present embodiment, the control signal is a signal that the video conference terminal needs to send to the image pickup apparatus, and is used for controlling image pickup parameters of the image pickup apparatus, such as an adjustment parameter of a focal length of the image pickup apparatus, a rotation parameter of a lens, and the like.
In this embodiment, the video signal may be a signal acquired by the video conference terminal from the image pickup apparatus, or may be a signal generated by the video conference terminal.
Through the steps, the control signal is subjected to signal processing through the video conference terminal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment; synthesizing a video signal, a power signal and a target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment; and sending the composite signal to the image pickup equipment through a coaxial cable so as to instruct the image pickup equipment to demodulate the control signal, the video signal and the power supply signal from the composite signal. Therefore, the purposes of synthesizing different signals into one signal for transmission and reducing the complexity of hardware are achieved. Therefore, the problem that a signal transmission system in the related technology is complex can be solved, and the effects of simplifying a signal transmission device and saving transmission resources are achieved.
In an exemplary embodiment, signal processing the control signal to obtain the target control signal includes:
s1, amplifying the control signal to obtain an amplified control signal;
and S2, processing the amplified control signal through the protection circuit and the isolation circuit to obtain a target control signal.
In this embodiment, the control signal may be amplified by the signal amplifying circuit, and the amplified control signal is processed by the protection circuit and the isolation circuit, so that the accuracy of control signal transmission may be increased.
In one exemplary embodiment, synthesizing the video signal, the power signal, and the target control signal to obtain a synthesized signal includes:
s1, carrying out digital component serial interface SDI coding on the video signal to obtain an SDI signal;
and S2, loading the target control signal into the SDI signal and the power supply signal to obtain a composite signal.
In this embodiment, the video signal is programmed through the SID interface to obtain an SDI signal, and is output from the SDI output interface onto the coaxial cable, and the SDI signal on the coaxial cable is input to the image pickup apparatus through the SDI input interface, and then the video signal is sent to the display through the decoding circuit for display.
In an exemplary embodiment, before the video signal, the power signal and the target control signal are combined to obtain the combined signal, the method further includes:
and S1, adjusting the voltage of the electric signal generated by the power adapter to a preset voltage to obtain a power signal.
In this embodiment, the Power supply system may first supply Power to the video conference terminal through the Power adapter, then the video conference terminal raises the voltage to-48V through the DCDC boost circuit, and outputs an active Ethernet Over Ethernet (Power Over Ethernet) Power supply voltage to the outside through a Packet Switched Equipment (PSE) management controller chip. When the PD power receiving detection system of the camera shooting equipment detects that a load is inserted, a power supply control switch at the PSE end is turned on, the power supply control switch is externally converted into 48V power supply voltage again, and the power supply voltage is supplied to the camera shooting equipment through the DC voltage reduction conversion circuit.
In the present embodiment, a signal sending method is provided, and fig. 3 is a flowchart of a signal receiving method according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:
step S302, receiving a composite signal sent by a video conference terminal through a coaxial cable;
and step S304, demodulating a control signal, a video signal and a power signal from the composite signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment, the power signal is used for supplying power to the shooting equipment, and the video signal is displayed through the shooting equipment.
The embodiment includes but is not limited to the application in the scenes of video conference terminals, power transmission on cameras, video transmission and control signal transmission.
The executing subject of the above steps may be an image capturing apparatus or the like, but is not limited thereto.
In the present embodiment, the control signal is a signal that the video conference terminal needs to send to the image pickup apparatus, and is used for controlling image pickup parameters of the image pickup apparatus, such as an adjustment parameter of a focal length of the image pickup apparatus, a rotation parameter of a lens, and the like.
In this embodiment, the video signal may be a signal acquired by the video conference terminal from the image pickup apparatus, or may be a signal generated by the video conference terminal.
Through the steps, the composite signal sent by the video conference terminal is received through the coaxial cable; and demodulating a control signal, a video signal and a power signal from the synthesized signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment, the power signal is used for supplying power to the shooting equipment, and the video signal is displayed through the shooting equipment. Therefore, the purposes of synthesizing different signals into one signal for transmission and reducing the complexity of hardware are achieved. Therefore, the problem that a signal transmission system in the related technology is complex can be solved, and the effects of simplifying a signal transmission device and saving transmission resources are achieved.
In one exemplary embodiment, demodulating a control signal, a video signal, and a power signal from the composite signal includes:
and S1, demodulating the control signal, the video signal and the power supply signal from the synthesized signal through a frequency-selective wave demodulation circuit.
In an exemplary embodiment, after demodulating the control signal, the video signal and the power signal from the composite signal, the method further includes:
s1, supplying power to the image pickup apparatus using the power supply signal;
s2, determining the image pickup parameters of the image pickup device according to the control signal;
s3, sending the video signal to a display to display the video signal in the display.
The present invention will be described in detail with reference to the following specific examples:
the present embodiment is described by taking signal transmission between a video conference terminal and a camera terminal as an example, and as shown in fig. 4, the present embodiment is a schematic diagram of signal interaction between the video conference terminal and the camera terminal.
The embodiment can simultaneously realize the transmission of video signals, power signals and control signals by utilizing one coaxial cable, can improve the simplicity of the system, saves system hardware resources, and has higher transmission signal quality.
As shown in fig. 5, it is a block diagram of system control for serial port transmission of SDI video communication in this embodiment, and the method includes the following steps:
and S1, the camera terminal sends the collected video signal to the video conference terminal through the coaxial cable.
And S2, the video conference terminal sends the control signal, the control signal is sent to the camera terminal through the coaxial cable after modulation, and finally the camera terminal demodulates the control signal to achieve the effect of being controlled by the video conference terminal.
And S3, the video conference terminal transmits the power supply to the camera terminal through the coaxial cable.
And S4, transmitting the video, the power supply and the control signal through a coaxial cable, and realizing the function of one-wire three-transmission.
As shown in fig. 6, it is a schematic diagram of transmitting a video signal by a coaxial cable in this embodiment, and specifically includes: the image signal of outside collection input after chip coding becomes SDI signal, on exporting the coaxial cable from SDI out interface, the SDI signal on the coaxial cable passes through SDI in interface input again and gives the camera, later sends image video signal for the display through decoding circuit and shows.
As shown in fig. 7, the schematic diagram of the coaxial cable transmission power supply in this embodiment specifically includes: the power supply system supplies power to the video conference terminal through the power adapter, then the video conference terminal raises the voltage to-48V through the DCDC booster circuit, and outputs POE power supply voltage to the coaxial cable through the PSE management controller chip. When the power receiving detection system of the camera terminal PD detects that a load is inserted, the power supply control switch at the PSE end is turned on, the power supply control switch is externally converted into 48V power supply voltage again, and the power supply voltage is supplied to the camera terminal through the DC voltage reduction conversion circuit.
As shown in fig. 8, it is a schematic diagram of the coaxial cable in this embodiment that simultaneously transmits three signals, specifically including:
on the video conference terminal side: the control circuit initiates control over the camera, the control signal is amplified, then passes through the protective isolation circuit, and finally is modulated onto the video signal and the power signal through the frequency-selective filtering modulation circuit, so that the three signals are integrated together, and finally, the three mixed signals are transmitted out through a coaxial cable.
On the camera terminal side: the 48V power supply, the control signal and the SDI signal are demodulated by a frequency-selective filtering demodulation circuit (as shown in fig. 9) and sent to the video conference terminal, and then the control signal passes through an isolation protection circuit and is amplified and sent to the camera terminal.
In this embodiment, according to the characteristics of the control signal loaded on the SDI coaxial cable, the camera control end is designed with a frequency-selective filtering RLC network which is also matched with the SDI coaxial cable, so that the SDI video signal is frequency-selectively demodulated from the transmitted power signal and the video signal. The purpose of transmitting three mixed signals by using only one coaxial cable is realized, and the three mixed signals cannot interfere with each other.
In summary, in the video conference system of this embodiment, the control terminal can simultaneously implement video signals and control the transmission of signal power through one coaxial line, thereby implementing the function of one-line three-transmission, improving the simplicity and cleanliness of the system, saving system resources, and being more convenient and flexible to use. Through coaxial cable transmission, transmission signal quality is high, and the interference killing feature is strong, and transmission distance is farther.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
In this embodiment, a signal sending device is further provided, and the signal sending device is used to implement the foregoing embodiments and preferred embodiments, which have already been described and are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 10 is a block diagram of a signal transmission apparatus according to an embodiment of the present invention, as shown in fig. 10, the apparatus including:
the first processing module 1002 is configured to perform signal processing on a control signal to obtain a target control signal, where the control signal is used to control an imaging parameter of an imaging device;
a first synthesis module 1004, configured to synthesize the video signal, the power signal, and the target control signal to obtain a synthesized signal, where the power signal is used to supply power to the image capture apparatus;
a first sending module 1006, configured to send the composite signal to the image pickup apparatus through the coaxial cable, so as to instruct the image pickup apparatus to demodulate the control signal, the video signal, and the power signal from the composite signal.
In an exemplary embodiment, the first processing module includes:
the first amplifying unit is used for amplifying the control signal to obtain an amplified control signal;
and the first processing unit is used for processing the amplified control signal through a protection circuit and an isolation circuit to obtain the target control signal.
In an exemplary embodiment, the first synthesizing module includes:
the first coding unit is used for carrying out digital component serial interface SDI coding on the video signal to obtain an SDI signal;
and a first loading unit, configured to load the target control signal into the SDI signal and the power signal to obtain the composite signal.
In an exemplary embodiment, the apparatus further includes:
the first adjusting module is used for synthesizing the video signal, the power supply signal and the target control signal, and adjusting the voltage of the electric signal generated by the power adapter to a preset voltage before the synthesized signal is obtained, so that the power supply signal is obtained.
Fig. 11 is a block diagram of a signal receiving apparatus according to an embodiment of the present invention, as shown in fig. 11, the apparatus including:
a first receiving module 1102, configured to receive a composite signal sent by a video conference terminal through a coaxial cable;
and a first demodulation module 1104, configured to demodulate a control signal, a video signal, and a power signal from the composite signal, where the control signal is used to control an image capturing parameter of the image capturing apparatus, the power signal is used to supply power to the image capturing apparatus, and the video signal is displayed by the image capturing apparatus.
In an exemplary embodiment, the first demodulation module includes:
and a first demodulation unit for demodulating the control signal, the video signal and the power signal from the synthesized signal through a frequency-selective wave demodulation circuit.
In an exemplary embodiment, the apparatus further includes:
a power supply module, configured to demodulate a control signal, a video signal, and a power signal from the synthesized signal, and supply power to the image pickup device using the power signal;
the first determining module is used for determining the shooting parameters of the shooting equipment according to the control signal;
and the second sending module is used for sending the video signal to a display so as to display the video signal in the display.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program is arranged to perform the steps of any of the above-mentioned method embodiments when executed.
In the present embodiment, the above-mentioned computer-readable storage medium may be configured to store a computer program for executing the steps of:
s1, performing signal processing on the control signal to obtain a target control signal, wherein the control signal is used for controlling the image pickup parameters of the image pickup equipment;
s2, synthesizing the video signal, the power signal and the target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment;
and S3, sending the composite signal to the image pickup device through the coaxial cable to instruct the image pickup device to demodulate a control signal, a video signal and a power supply signal from the composite signal.
In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
In an exemplary embodiment, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
In an exemplary embodiment, the processor may be configured to execute the following steps by a computer program:
s1, performing signal processing on the control signal to obtain a target control signal, wherein the control signal is used for controlling the image pickup parameters of the image pickup equipment;
s2, synthesizing the video signal, the power signal and the target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment;
and S3, sending the composite signal to the image pickup device through the coaxial cable to instruct the image pickup device to demodulate a control signal, a video signal and a power supply signal from the composite signal.
For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary embodiments, and details of this embodiment are not repeated herein.
It will be apparent to those skilled in the art that the various modules or steps of the invention described above may be implemented using a general purpose computing device, they may be centralized on a single computing device or distributed across a network of computing devices, and they may be implemented using program code executable by the computing devices, such that they may be stored in a memory device and executed by the computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into various integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A signal transmission method, comprising:
performing signal processing on a control signal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment;
synthesizing a video signal, a power signal and the target control signal to obtain a synthesized signal, wherein the power signal is used for supplying power to the camera equipment;
and sending the composite signal to the camera equipment through a coaxial cable so as to instruct the camera equipment to demodulate the control signal, the video signal and the power supply signal from the composite signal.
2. The method of claim 1, wherein signal processing the control signal to obtain the target control signal comprises:
amplifying the control signal to obtain an amplified control signal;
and processing the amplified control signal through a protection circuit and an isolation circuit to obtain the target control signal.
3. The method of claim 1, wherein combining the video signal, the power signal, and the target control signal comprises:
carrying out digital component serial interface SDI coding on the video signal to obtain an SDI signal;
and loading the target control signal into the SDI signal and the power supply signal to obtain the synthetic signal.
4. The method of claim 1, wherein before synthesizing the video signal, the power signal, and the target control signal to obtain a synthesized signal, the method further comprises:
and adjusting the voltage of the electric signal generated by the power adapter to a preset voltage to obtain the power signal.
5. A signal receiving method, comprising:
receiving a composite signal sent by a video conference terminal through a coaxial cable;
and demodulating a control signal, a video signal and a power signal from the composite signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment, the power signal is used for supplying power to the shooting equipment, and the video signal is displayed through the shooting equipment.
6. The method of claim 1, wherein demodulating the control signal, the video signal, and the power signal from the composite signal comprises:
and demodulating the control signal, the video signal and the power supply signal from the synthesized signal through a frequency-selective wave demodulation circuit.
7. The method of claim 1, wherein after demodulating the control signal, the video signal, and the power signal from the composite signal, the method further comprises:
supplying power to the image pickup apparatus by using the power supply signal;
determining the image pickup parameters of the image pickup equipment according to the control signal;
sending the video signal to a display to display the video signal in the display.
8. A signal transmission device, comprising:
the first processing module is used for carrying out signal processing on the control signal to obtain a target control signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment;
the first synthesis module is used for synthesizing a video signal, a power supply signal and a target control signal to obtain a synthesized signal, wherein the power supply signal is used for supplying power to the camera equipment;
and the first sending module is used for sending the composite signal to the camera equipment through a coaxial cable so as to instruct the camera equipment to demodulate the control signal, the video signal and the power supply signal from the composite signal.
9. A signal receiving apparatus, comprising:
the first receiving module is used for receiving a composite signal sent by the video conference terminal through a coaxial cable;
the first demodulation module is used for demodulating a control signal, a video signal and a power signal from the composite signal, wherein the control signal is used for controlling the shooting parameters of the shooting equipment, the power signal is used for supplying power to the shooting equipment, and the video signal is displayed through the shooting equipment.
10. A computer-readable storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 4 when executed, or to perform the method of any of claims 5 to 7.
11. An electronic apparatus comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 4, or to perform the method of any of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
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| CN114422279A (en) * | 2021-12-07 | 2022-04-29 | 成都市联洲国际技术有限公司 | Expansion circuit, system, data processing method, and computer storage medium |
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Application publication date: 20210903 |