CN215186962U

CN215186962U - Transmission apparatus and image pickup system

Info

Publication number: CN215186962U
Application number: CN202120790105.7U
Authority: CN
Inventors: 常树磊; 李伟; 王月; 赵东玮; 满春刚; 向宇; 浑何明; 王炜楠; 张昊森; 刘孟
Original assignee: Tencent Technology Beijing Co Ltd
Current assignee: Tencent Technology Beijing Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-12-14
Anticipated expiration: 2031-04-16

Abstract

The application provides a transmission device and a camera system, and belongs to the technical field of camera devices. The transmission equipment comprises a power transmission component, a holder signal transmission component, a video signal transmission component, a wavelength division multiplexer and a composite interface integrated with a power interface and an optical fiber interface. The power transmission component is connected with the power interface, the cradle head signal transmission component and the video signal transmission component are connected with branch ports of the wavelength division multiplexer, and a public port of the wavelength division multiplexer is connected with the optical fiber interface. The power transmission part, cloud platform signal transmission part, video signal transmission part among the transmission equipment that this application provided can be connected with the power cord, cloud platform signal line and the video signal line at the backstage of making a video recording respectively to be connected with the distal end through compound interface and the compound cable of photoelectricity, thereby can carry out electric energy, cloud platform signal and video signal transmission through a cable, the wiring is very convenient. And the power supply in the camera background is used for supplying power, so that the power supply does not need to be temporarily determined near the remote control holder.

Description

Transmission apparatus and image pickup system

Technical Field

The application relates to the technical field of camera equipment, in particular to transmission equipment and a camera system.

Background

The remote control holder is used for bearing the camera and can drive the camera to move (such as up-down pitching and left-right rotating) under the control of a camera shooting background (such as a broadcasting vehicle/broadcasting system) so as to adjust the camera shooting position, angle and the like of the camera. When the remote control pan/tilt/camera is installed, power supply, video signal transmission and pan/tilt signal (such as a pan control signal and a pan/tilt state signal) transmission of the remote control pan/tilt/camera need to be solved.

In the related art, video signal transmission and pan-tilt signal transmission are generally realized by erecting independent video signal lines and pan-tilt signal lines in front of a camera background and a remote control pan-tilt. Meanwhile, a power supply is generally solved near the remote control pan/tilt, and a power line is used between the power supply and the remote control pan/tilt to realize power supply of the remote control pan/tilt and the camera.

However, at least 3 cables of the power line, the video signal line and the cradle head signal line are adopted to realize power supply, video signal transmission and cradle head signal transmission, and wiring is troublesome. Moreover, since the installation position of the remote control holder is confirmed according to the program requirement and has the possibility of temporary change, the determination of the power supply is very difficult.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a transmission device and a camera system, which can solve the technical problems existing in the related technology, and the technical scheme of the transmission device and the camera system is as follows:

in a first aspect, a transmission device is provided, where the transmission device includes a power transmission component, a pan-tilt signal transmission component, a video signal transmission component, a wavelength division multiplexer, and a composite interface, where the composite interface is used for connecting with an optical-electrical composite cable, and a power interface and an optical fiber interface are integrated in the composite interface;

the first end of the power transmission part is used for being connected with a power supply line, and the second end of the power transmission part is connected with the power interface;

the first end of the cradle head signal transmission component is used for being connected with a cradle head signal line, and the second end of the cradle head signal transmission component is connected with a branch port of the wavelength division multiplexer;

the first end of the video signal transmission part is used for being connected with a video signal line, and the second end of the video signal transmission part is connected with a branch port of the wavelength division multiplexer;

and the public port of the wavelength division multiplexer is connected with the optical fiber interface.

In one possible implementation manner, the power transmission component includes an ac power input interface, an ac-to-dc component, a first power protection component, and a first voltage reduction component;

the input end of the alternating current power supply input interface is used for being connected with a power supply line, the output end of the alternating current power supply input interface is connected with the input end of the alternating current-to-direct current component, the output end of the alternating current-to-direct current component is connected with the input end of the first power supply protection component, and the output end of the first power supply protection component is connected with the power supply interface;

the output end of the AC-to-DC conversion component is also connected with the input end of the first voltage reduction component, and the output end of the first voltage reduction component is connected with the power consumption component in the transmission equipment.

In a possible implementation manner, the transmission device further includes a micro control unit, and an electrical signal interface is further integrated in the composite interface;

the micro control unit is connected with the electric signal interface and the first power supply protection component.

In a possible implementation, the transmission device further comprises a display component, which is connected to the micro control unit.

In one possible implementation manner, the power transmission component includes a second power supply protection component, a second voltage reduction component, and a dc power output interface;

the input of second power supply protection part with power interface connects, the output of second power supply protection part with the input of second step-down part is connected, the output of second step-down part with DC power supply output interface's input is connected, DC power supply output interface's output is used for being connected with the power supply line.

In a possible implementation manner, the transmission device further includes a micro control unit and a display component, and an electrical signal interface is further integrated in the composite interface;

the micro control unit is connected with the electric signal interface and the display component.

In a possible implementation manner, the pan/tilt head signal transmission component includes an RJ45 interface, a Physical Layer (PHY) chip, an XLR interface, an RS-422/RS-485 input interface chip, an RS-422/RS-485 output interface chip, a Field Programmable Gate Array (Field Programmable Gate Array, FPGA), and a first photoelectric conversion component;

the first end of the RJ45 interface is used for being connected with a cradle head signal line, the second end of the RJ45 interface is connected with the first end of the Ethernet PHY chip, and the second end of the Ethernet PHY chip is connected with the first end of the FPGA;

the first end of the XLR interface is used for being connected with a cradle head signal line, the second end of the XLR interface is connected with the first end of the RS-422/RS-485 input interface chip and the first end of the RS-422/RS-485 output interface chip, and the second end of the RS-422/RS-485 input interface chip and the second end of the RS-422/RS-485 output interface chip are both connected with the first end of the FPGA;

the second end of the FPGA is connected with the electric port end of the first photoelectric conversion component, and the optical port end of the first photoelectric conversion component is connected with the branch port of the wavelength division multiplexer.

In one possible implementation, the video signal transmission section includes a video signal output interface, a video signal input interface, and a second photoelectric conversion section;

the output end of the video signal output interface and the input end of the video signal input interface are both used for being connected with a video signal line;

the input end of the video signal output interface and the output end of the video signal input interface are both connected with the electrical port end of the second photoelectric conversion component, and the optical port end of the second photoelectric conversion component is connected with the branch port of the wavelength division multiplexer.

In one possible implementation, the composite interface is a LEMO (ramo) interface.

In a second aspect, a camera system is provided, the camera system comprises a camera background, a near-end transmission device, a photoelectric composite cable, a far-end transmission device, a remote control holder and a camera, and the camera is fixed on the remote control holder;

the camera shooting background is respectively connected with the first end of the power transmission component of the near-end transmission equipment, the first end of the cradle head signal transmission component and the first end of the video signal transmission component through a power supply line, a cradle head signal line and a video signal line;

the composite interface of the near-end transmission equipment is connected with the first end of the photoelectric composite cable, and the second end of the photoelectric composite cable is connected with the composite interface of the far-end transmission equipment;

the first end of power transmission part of far-end transmission equipment with the first end of cloud platform signal transmission part respectively through power supply line and cloud platform signal line with the remote control cloud platform is connected, the first end of the video signal transmission part of far-end transmission equipment pass through the video signal line with the camera is connected.

The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:

the power transmission part, the cloud platform signal transmission part and the video signal transmission part in the transmission equipment provided by the embodiment of the application can be respectively connected with the camera shooting background through the power supply line, the cloud platform signal line and the video signal line and are connected to the remote control cloud platform side through the composite interface and the photoelectric composite cable. Therefore, the transmission of electric energy, cradle head signals and video signals is realized through one cable, and the wiring is very convenient. And moreover, the power supply in the camera background is used for supplying power, and the power supply does not need to be determined temporarily near the remote control holder.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In the drawings:

fig. 1 is a schematic diagram of an image capturing system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a transmission device according to an embodiment of the present application;

fig. 3 is a schematic diagram of an LEMO interface according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a near-end transmission device according to an embodiment of the present application;

fig. 5 is a schematic diagram of a near-end transmission device according to an embodiment of the present application;

fig. 6 is a schematic diagram of a remote transmission device according to an embodiment of the present application;

fig. 7 is a schematic diagram of a remote transmission device according to an embodiment of the present application.

Description of the figures

a. The system comprises a camera background, b, a near-end transmission device, c, a photoelectric composite cable, d, a far-end transmission device, e, a remote control holder, f and a camera;

1. a power transmission component;

11. the device comprises an alternating current power supply input interface, 12, an alternating current-to-direct current component, 13, a first power supply protection component, 14, a first voltage reduction component, 141, a first voltage reduction module, 142, a second voltage reduction module, 143 and a third voltage reduction module;

15. the power supply protection device comprises a second power supply protection component 16, a second voltage reduction component 161, a fourth voltage reduction module 162, a fifth voltage reduction module 163, a sixth voltage reduction module 17 and a direct-current power supply output interface;

2. a cradle head signal transmission component;

21. RJ45 interface, 22 Ethernet PHY chip, 23 XLR interface, 24 RS-422/RS-485 input interface chip, 25 RS-422/RS-485 output interface chip, 26 FPGA, 27 first photoelectric conversion part;

3. a video signal transmission section;

31. a video signal output interface 32, a video signal input interface 33, a second photoelectric conversion part 34, and a video signal loop-out interface;

4. a wavelength division multiplexer;

5. a composite interface 51, a power interface 52, an optical fiber interface 53, an electric signal interface 511, an interface internal power line 521, an interface internal optical fiber 531 and an interface internal signal line;

6. a micro control unit;

7. display part, 71, LED display circuit, 72, digital tube display circuit, 73 storage/control circuit;

8. and (4) an optical flange.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

With the more and more excellent production of the comprehensive art programs, the more and more special machines are used, and the remote control holder is an important representative. The remote control holder is used for bearing the camera and can drive the camera to move (such as up-down pitching and left-right rotation) under the control of the camera shooting background. In addition, the camera shooting background can also control the lens focusing, zooming and the like of the camera. The camera background can also be called a camera far end, and can be a broadcasting van or a broadcasting system.

The mounting position of the remote control holder changes according to program requirements, and the remote control holder can be generally mounted at a position with a special visual angle, such as the top of a stage, and a narrow space where camera shooting personnel can not enter and the like which meet the production intention. Since these positions are all provisionally confirmed to be installed, video signal transmission, pan-tilt signal transmission, and power supply are not easily solved.

In the related art, video signal transmission and pan-tilt signal transmission are generally realized by erecting independent video signal lines and pan-tilt signal lines in front of a camera background and a remote control pan-tilt. Meanwhile, a power supply can be searched near the remote control holder, and a power line is erected between the power supply and the remote control holder to realize power supply of the remote control holder and the camera.

However, at least 3 cables of the power line, the video signal line and the cradle head signal line are adopted to realize power supply, video signal transmission and cradle head signal transmission, and wiring is troublesome.

Meanwhile, the installation position of the remote control holder is confirmed temporarily according to program requirements, and the possibility of temporary change exists, so that the power supply is difficult to determine, and sometimes the power supply needs to be shared with other equipment, so that the safety risk is high.

In view of the above technical problems, an embodiment of the present application provides a novel camera system, and as shown in fig. 1, the camera system includes a camera background a, a near-end transmission device b, a photoelectric composite cable c, a far-end transmission device d, a remote control pan/tilt head e, and a camera f. The camera f is installed on the remote control cloud platform e, and the camera f can with remote control cloud platform e electric connection to the camera f can obtain the electric energy from remote control cloud platform e.

The camera shooting background a is connected with the power transmission part 1, the tripod head signal transmission part 2 and the video signal transmission part 3 of the near-end transmission device b through a power supply line, a tripod head signal line and a video signal line respectively.

The composite interface 5 of the near-end transmission device b is connected with the first end of the photoelectric composite cable c, and the second end of the photoelectric composite cable c is connected with the composite interface 5 of the far-end transmission device d.

The power transmission part 1 and the pan-tilt signal transmission part 2 of the far-end transmission device d are respectively connected with a remote control pan-tilt e through a power supply line and a pan-tilt signal line, and the video signal transmission part 3 of the far-end transmission device d is connected with a camera f through a video signal line.

Therefore, in the camera system provided by the embodiment of the application, at the near end, the electric energy or the signal transmitted by the power supply line, the cradle head signal line and the video signal line is combined on the photoelectric composite cable c by the near end transmission device b for transmission, so that the video signal, the cradle head signal and the electric energy are simultaneously transmitted by one photoelectric composite cable c, and the wiring is very convenient. Moreover, the shooting background a supplies electric energy to the remote control holder e, so that a power supply source of the remote control holder e does not need to be determined temporarily, and the electric energy transmission is convenient and safe.

Meanwhile, at the far end, the far-end transmission device d is connected with the photoelectric composite cable c, and the electric energy, the video signal and the pan-tilt signal transmitted by the photoelectric composite cable c are split to the power transmission part 1, the pan-tilt signal transmission part 2 and the video signal transmission part 3 for transmission. The power transmission part 1, the pan-tilt signal transmission part 2 and the video signal transmission part 3 are respectively connected with a remote control pan-tilt e or a camera f through a power supply line, a video signal line and a pan-tilt signal line, so that the transmission of electric energy, video signals and pan-tilt signals between the far end and the near end is realized. Wherein, the near end refers to the background a side of the camera, and the far end refers to the remote control holder e and the f side of the camera. The pan/tilt signal line may also be referred to as a pan/tilt control signal line.

Next, a near-end transmission device b and a far-end transmission device d provided in the embodiment of the present application are explained:

as shown in fig. 2, the transmission apparatus includes a power transmission section 1, a pan/tilt signal transmission section 2, a video signal transmission section 3, a wavelength division multiplexer 4, and a composite interface 5. The composite interface 5 is used for connecting with the photoelectric composite cable c, and a power interface 51 and an optical fiber interface 52 are integrated in the composite interface 5. A first end of the power transmission part 1 is used for connecting to a power supply line, and a second end of the power transmission part 1 is connected to the power interface 51. The first end of the cradle head signal transmission part 2 is used for being connected with a cradle head signal line, and the second end of the cradle head signal transmission part 2 is connected with a branch port of the wavelength division multiplexer 4. A first end of the video signal transmission section 3 is for connection with a video signal line, and a second end of the video signal transmission section 3 is connected with a branch port of the wavelength division multiplexer 4. The common port of the wavelength division multiplexer 4 is connected to the optical fiber interface 52.

The transmission device may be a near-end transmission device b or a far-end transmission device d, which is not limited in this embodiment of the present application.

The power transmission element 1 is used to transmit electrical energy between a power supply line and the power interface 51. Illustratively, when the transmission device is the near-end transmission device b, the input end of the power transmission part 1 is connected to the power supply line, and the power transmission part 1 is used for transmitting the power input by the power supply line to the power interface 51. When the transmission device is the remote transmission device d, the output end of the power transmission unit 1 is connected to the power supply line, and the power transmission unit 1 is configured to transmit the electric energy received by the power interface 51 to the power supply line and transmit the electric energy to the remote control holder e through the power supply line.

The pan/tilt signal transmission component 2 is configured to transmit a pan/tilt signal between the pan/tilt signal line and the optical fiber interface 52, and the pan/tilt signal transmission component 2 may further have a photoelectric conversion function, may convert an electrical signal transmitted by the pan/tilt signal line into an optical signal, and transmit the optical signal to the wavelength division multiplexer 4, and may convert an optical signal transmitted by the wavelength division multiplexer 4 into an electrical signal, and transmit the electrical signal to the pan/tilt signal line. Of course, the cradle head signal transmission component 2 may also not have the photoelectric conversion function, and at this time, both ends of the cradle head signal transmission component 2 transmit optical signals, and the cradle head signal line is an optical fiber. Through the cloud platform signal of form transmission with light signal, be favorable to promoting transmission distance.

The video signal transmission section 3 is for transmitting a video signal between the video signal line and the optical fiber interface 52, and the video signal transmission section 3 may further have a photoelectric conversion function capable of converting an electric signal transmitted by the video signal line into an optical signal and outputting the optical signal to the wavelength division multiplexer 4, and capable of converting an optical signal transmitted by the wavelength division multiplexer 4 into an electric signal and transmitting the electric signal to the video signal line. Of course, the video signal transmission part 3 may not have a photoelectric conversion function, and at this time, both ends of the video signal transmission part 3 transmit optical signals, and the video signal line is an optical fiber. By transmitting the video signal in the form of an optical signal, it is advantageous to increase the transmission distance.

The wavelength division multiplexer 4 is used to transmit light of different wavelengths in the same optical fiber. Illustratively, the Wavelength Division Multiplexer 4 is a Coarse Wavelength Division Multiplexer (CWDM), and may be, for example, a 4-wave Multiplexer. The wavelength of the light wave used by the wavelength division multiplexer 4 may be any of 1490nm, 1510nm, 1530nm, and 1550nm 4. The holder signal transmission component 2 can occupy 1490nm and 1510nm light waves, and the video signal transmission component 3 can occupy 1530nm and 1550nm light waves. Illustratively, on the transmission optical path from the near end to the far end, the pan/tilt signal transmission section 2 occupies a 1490nm light wave, and the video signal transmission section 3 occupies a 1530nm light wave. On the transmission optical path from the far end to the near end, the pan-tilt signal transmission component 2 occupies 1510nm optical wave, and the video signal transmission component 3 occupies 1550nm optical wave.

The composite interface 5 is an optical-electrical composite interface, and the embodiment of the present application is not limited with respect to the specific type of the composite interface 5. Illustratively, as shown in fig. 3, the composite interface 5 is a LEMO (ramo) interface. The LEMO interface is an interface that conforms to The international standard for Television broadcasting, and conforms to The Society of Motion Picture and Television Engineers (SMPTE) 304/SMPTE311 standard in The united states, The association Radio industries and Businesses in japan (ARIB) standard, and The European Broadcasting Union (EBU) standard in europe, and has high versatility. The LEMO interface includes a2 × power pin (i.e., power interface 51) for supplying power, a2 × optical fiber (i.e., optical fiber interface 52) for transmitting optical signals, and a2 × signal pin (i.e., electrical signal interface 53) for transmitting electrical signals.

In the following, the specific structure and the operation principle of the transmission device are exemplarily described in more detail by taking the transmission device as a near-end transmission device b and a far-end transmission device d, respectively:

(1) the transmission device is a near-end transmission device b:

as shown in fig. 4, the power transmission unit 1 includes an ac power input interface 11, an ac-to-dc unit 12, a first power protection unit 13, and a first voltage reduction unit 14.

The input end of the ac power input interface 11 is used for being connected to a power supply line, the output end of the ac power input interface 11 is connected to the input end of the ac-to-dc component 12, the output end of the ac-to-dc component 12 is connected to the input end of the first power supply protection component 13, and the output end of the first power supply protection component 13 is connected to the power supply interface 51 (as shown in fig. 5, the output end of the first power supply protection component 13 is connected to the interface internal power line 511 of the composite interface 5).

The working principle of the power transmission part 1 is as follows:

the ac power input interface 11 introduces external ac power (for example, 220V ac power) and transmits the ac power to the ac-dc component 12. The ac-dc converting part 12 converts ac power into dc power and outputs the dc power to the first power supply protecting part 13. In one possible implementation, the ac-dc component 12 also has a voltage reduction function, for example, the ac-dc component 12 can convert 220V ac into 75V dc. The first power supply protection component 13 outputs the direct current to the power supply interface 51. The first power supply protection unit 13 is used to prevent the near-end equipment from malfunctioning due to short-circuit of the load, and cuts off the dc power input to the power interface 51 when the overload or short-circuit of the far-end is detected.

In addition, as shown in fig. 4, the output terminal of the ac-dc converting component 12 is further connected to the input terminal of the first voltage dropping component 14, and the output terminal of the first voltage dropping component 14 is connected to the power consuming component in the transmission device to supply power to the power consuming component.

Illustratively, as shown in fig. 5, the first voltage-reducing part 14 includes a first voltage-reducing module 141, a second voltage-reducing module 142, and a third voltage-reducing module 143.

The ac-dc converting part 12 outputs 75V dc power to the first voltage decreasing module 141, the first voltage decreasing module 141 converts the 75V dc power into 12V dc power, and outputs 12V dc power to the second voltage decreasing module 142 and the third voltage decreasing module 143. The first voltage-reducing module 141 serves as a first-stage voltage-reducing power supply and provides a low-voltage-difference power supply for the rest voltage-reducing modules, so that power supply ripples and the area of a Printed Circuit Board (PCB) are greatly reduced.

The second voltage-reducing module 142 converts the 12V dc to 5V dc, and outputs the dc to the display module 7 to supply power to the display module 7, such as the nixie tube display circuit 72 in the display module 7.

The third voltage-reducing module 143 converts the 12V dc power into 3.3V, 2.5V, and 1.2V dc power, where the 3.3V dc power is used to supply power to chips such as the Field Programmable Gate Array (FPGA) 26 and the Micro Control Unit (MCU) 6, the 2.5V dc power is used to supply power to the video interface chip, and the 1.2V dc power is used to supply power to the FPGA26 core.

In order to improve the safety of the transmission device and prevent the photoelectric composite cable c from being electrified when the photoelectric composite cable c is not connected in place, in a possible implementation manner, as shown in fig. 4, the transmission device further includes a micro control unit 6, and an electrical signal interface 53 is further integrated in the composite interface 5. The micro-control unit 6 is connected to the electrical signal interface 53 and to the first power supply protection component 13. As shown in fig. 5, the micro control unit 6 is connected to two interface internal signal lines 531 of the composite interface 5.

The micro control unit 6 can detect whether the photoelectric composite cable c is connected in place through the electric signal interface 53, and when the photoelectric composite cable c is connected in place, the micro control unit controls the first power supply protection component 13 to output electric energy through the power interface 51; and when detecting that the photoelectric composite cable c is not connected in place, controlling the first power supply protection component 13 not to output electric energy.

In addition, the transmission device may further comprise a display unit 7, the display unit 7 being connected to the micro control unit 6. The micro control unit 6 is able to detect the voltage of the first power protection means 13, and/or of the alternating current to direct current means 12, and to send the detected voltage value to the display means 7, which voltage value is displayed by the display means 7.

Illustratively, the micro control unit 6 is further capable of sending the detected voltage value to the remote transmission device d through the electrical signal interface 53 and the optical/electrical composite cable c, and causing the remote transmission device d to display the detected voltage value.

Illustratively, as shown in fig. 5, the display part 7 includes a Light Emitting Diode (LED) display circuit 71, a nixie tube display circuit 72, and a storage/control circuit 73.

As shown in fig. 4, the pan/tilt head signal transmission section 2 includes an RJ45(Registered Jack 45) interface 21, an ethernet Physical Layer (PHY) chip 22, an XLR (cannon) interface 23, an RS-422/RS-485 input interface chip 24, an RS-422/RS-485 output interface chip 25, an FPGA26, and a first photoelectric conversion section 27. Among them, the first photoelectric conversion part 27 includes an optical module including a laser.

The first end of the RJ45 interface 21 is used for connecting with the pan tilt signal line, the second end of the RJ45 interface 21 is connected with the first end of the ethernet PHY chip 22, and the second end of the ethernet PHY chip 22 is connected with the first end of the FPGA 26.

The first end of the XLR interface 23 is used for being connected with a cradle head signal line, the second end of the XLR interface 23 is connected with the first end of the RS-422/RS-485 input interface chip 24 and the first end of the RS-422/RS-485 output interface chip 25, and the second end of the RS-422/RS-485 input interface chip 24 and the second end of the RS-422/RS-485 output interface chip 25 are both connected with the first end of the FPGA 26.

A second end of the FPGA26 is connected to an electrical port of the first photoelectric conversion unit 27, and an optical port of the first photoelectric conversion unit 27 is connected to a branch port of the wavelength division multiplexer 4.

The pan-tilt signal transmission part 2 adopts the FPGA26 to collect signals, adopts a Time Division Multiple Access (TDMA) multiplexing technology to asynchronously collect gigabit ethernet, RS422/485 data and local control signals, converts the data into high-speed parallel data of 20bit 156.25MHz of a local synchronous clock domain, converts the data into a high-speed serial data stream of 3.125Gbps through a SERializer/DESerializer (SERDES), and adopts an 8b/10b coding technology to eliminate direct current components in the serial data.

The data path between the FPGA26 and the first photoelectric conversion part 27 is a 3.125Gbps high-speed data path for transmitting 10/100/1000M ethernet data and RS422/485 data.

The operating principle of the cradle head signal transmission part 2 is as follows:

transmission of pan-tilt control signals:

and receiving a pan-tilt control signal sent by a pan-tilt signal line through the RJ45 interface 21, and transmitting the pan-tilt control signal to the ethernet PHY chip 22. The ethernet PHY chip 22 transmits the pan/tilt control signal to the FPGA26, the FPGA26 transmits the pan/tilt control signal to the electrical port of the first photoelectric conversion unit 27, and the first photoelectric conversion unit 27 converts the pan/tilt control signal in the form of an electrical signal into the pan/tilt control signal in the form of an optical signal and transmits the pan/tilt control signal to the wavelength division multiplexer 4. The signal is transmitted to the optical fiber interface 52 by the wavelength division multiplexer 4, and is transmitted to the photoelectric composite cable c by the optical fiber interface 52, and is further transmitted to the far end, so as to control the remote control holder e at the far end.

Or;

the XLR interface 23 receives the pan-tilt control signal sent by the pan-tilt signal line and transmits the pan-tilt control signal to the RS-422/RS-485 input interface chip 24, the RS-422/RS-485 input interface chip 24 transmits the pan-tilt control signal to the FPGA26, the FPGA26 transmits the pan-tilt control signal to the electrical port end of the first photoelectric conversion part 27, and the first photoelectric conversion part 27 converts the pan-tilt control signal in the form of an electrical signal into the pan-tilt control signal in the form of an optical signal and transmits the pan-tilt control signal to the wavelength division multiplexer 4. The signal is transmitted to the optical fiber interface 52 by the wavelength division multiplexer 4, and is transmitted to the photoelectric composite cable c by the optical fiber interface 52, and is further transmitted to the far end, so as to control the remote control holder e at the far end.

The pan/tilt control signal may include a control signal for controlling the movement (such as up/down tilting and left/right rotation) of the remote control pan/tilt, and may further include a control signal for controlling the focusing or zooming of the camera.

Transmission of the tripod head state signal:

the remote control pan-tilt e can also send own state signals (such as moving speed, angle, position and the like) to the camera background a so as to be convenient for the staff to check.

The transmission device receives the pan/tilt status signal transmitted by the optical/electrical composite cable c through the optical fiber interface 52, and transmits the pan/tilt status signal to the wavelength division multiplexer 4, the wavelength division multiplexer 4 transmits the pan/tilt status signal to the optical port end of the first photoelectric conversion component 27, and the first photoelectric conversion component 27 converts the pan/tilt status signal in the form of an optical signal into a pan/tilt status signal in the form of an electrical signal, and transmits the pan/tilt status signal to the FPGA 26.

The FPGA26 transmits the pan-tilt status signal to the Ethernet PHY chip 22, and the Ethernet PHY chip 22 transmits the pan-tilt status signal to the camera background a through the RJ45 interface 21 and the pan-tilt signal line. Or the FPGA26 transmits the pan-tilt status signal to the RS-422/RS-485 output interface chip 25, and the RS-422/RS-485 output interface chip 25 transmits the pan-tilt status signal to the camera background a through the XLR interface 23 and the pan-tilt signal line.

The cradle head state signal may include a state signal of a remote control cradle head, and may also include a state signal of a camera, and the like.

The cradle head signal Transmission part 2 provided by the embodiment of the application can be compatible with a Transmission Control Protocol/Internet Protocol (TCP/IP) Control Protocol and an RS422/RS485 Control Protocol by simultaneously arranging the ethernet PHY chip 22, the RS-422/RS-485 input interface chip 24 and the RS-422/RS-485 output interface chip 25, can be matched with Control protocols of different remote Control cradle head manufacturers, and has stronger universality.

As shown in fig. 4, the video signal transmission section 3 includes a video signal output interface 31, a video signal input interface 32, and a second photoelectric conversion section 33.

An output terminal of the video signal output interface 31 and an input terminal of the video signal input interface 32 are both used for connection with a video signal line. An input end of the video signal output interface 31 and an output end of the video signal input interface 32 are both connected to an electrical port end of the second photoelectric conversion section 33, and an optical port end of the second photoelectric conversion section 33 is connected to a branch port of the wavelength division multiplexer 4.

The video signal output Interface 31 and the video signal input Interface 32 may be both Digital component Serial interfaces (SDI interfaces).

The operating principle of the video signal transmission section 3 is:

reception of video signals at the far end:

the optical fiber interface 52 in the composite interface 5 receives the video signal transmitted by the optical-electrical composite cable c and transmits the video signal to the common port of the wavelength division multiplexer 4. The wavelength division multiplexer 4 transmits the video signal to the optical port end of the second photoelectric conversion section 33 through the branch port. The second photoelectric conversion section 33 converts the video signal in the form of an optical signal into a video signal in the form of an electrical signal, and transmits it to the video signal output interface 31 through the electrical port. The video signal output interface 31 transmits the video signal to the camera background a through the video signal line, and the camera background a acquires the video signal obtained by the camera f.

Transmission of video signal at near end:

the camera background a processes the received video signal and transmits the processed video signal to the video signal input interface 32 through a video signal line. The video signal input interface 32 transmits a video signal to the electrical port terminal of the second photoelectric conversion section 33. The second photoelectric conversion section 33 converts the video signal in the form of an electrical signal into a video signal in the form of an optical signal, and transmits to the branch port of the wavelength division multiplexer 4. The wavelength division multiplexer 4 transmits the video signal to the optical fiber interface 52 through the common port, and the optical fiber interface 52 transmits the video signal to the optical electrical composite cable c and transmits the video signal to the remote transmission device d through the optical electrical composite cable c.

Since the processed video signal is transmitted to the remote transmission device d, the worker can acquire the processed video signal at the remote transmission device d without acquiring the processed video signal from the camera background a, and the processed video signal can be used for additional applications.

For example, when the worker wants to view the shot video at the shooting site, a video signal line may be connected at the video signal output interface 31 of the remote transmitting apparatus d and connected with a display to view the shot video.

Illustratively, as shown in fig. 5, the video signal output interfaces 31 may be two. The transmission device may further include a video signal loop-out interface 34, and the video signal loop-out interface 34 is used for outputting the video signal input by the video input interface 32. That is, after receiving the video signal output interface 31, the second photoelectric conversion unit 33 sends one path to the wavelength division multiplexer 4, and sends the other path to the video signal loop output interface 34.

As shown in fig. 5, the wavelength division multiplexer 4 is connected to one interface internal optical fiber 521 in the composite interface 5. The composite interface 5 also has one interface internal fiber 521 left, and the one interface internal fiber 521 can be connected to the optical flange 8. That is, the transmission apparatus reserves an optical fiber path.

(2) The transmission device is a far-end transmission device d:

as shown in fig. 6, the power transmission section 1 includes a second power supply protection section 15, a second voltage step-down section 16, and a dc power output interface 17.

The input end of the second power supply protection component 15 is connected to the power interface 51 (as shown in fig. 7, the input end of the second power supply protection component 15 is connected to the interface internal power line 511 of the composite interface 5), the output end of the second power supply protection component 15 is connected to the input end of the second voltage reduction component 16, the output end of the second voltage reduction component 16 is connected to the input end of the dc power supply output interface 17, and the output end of the dc power supply output interface 17 is used for being connected to a power supply line.

The dc power output interface 17 may be a 5PIN XLR interface.

The working principle of the power transmission part 1 is as follows:

the second power supply protection component 15 receives the dc power (for example, 75V dc power) transmitted by the optical composite cable c through the power interface 51, and transmits the dc power to the second voltage reduction component 16. The second voltage reduction part 16 reduces the direct current (for example, reduces the direct current to 12V) and outputs the direct current to the power output interface 17, and the power output interface 17 transmits the direct current to the remote control holder e through the power supply line so as to supply power to the remote control holder e. And the camera can also obtain the required electric energy from the remote control pan-tilt e. The second power supply protection unit 15 is used to prevent the remote device from malfunctioning, and when the voltage is detected to be too high, the power supply to the remote control pan/tilt head e is stopped.

For example, as shown in fig. 7, the second voltage-reducing part 16 includes a fourth voltage-reducing module 161, a fifth voltage-reducing module 162, and a sixth voltage-reducing module 163, which are connected in sequence. An input terminal of the dc power output interface 17 may be connected to an output terminal of the fourth voltage-decreasing module 161.

The second power supply protection component 15 outputs the received 75V dc power to the fourth voltage-reducing module 161, and the fourth voltage-reducing module 161 converts the 75V dc power into 12V dc power and outputs the 12V dc power to the dc power output interface 17, the fifth voltage-reducing module 162, and the sixth voltage-reducing module 163. The fourth voltage reduction module 161 is used as a first-stage voltage reduction power supply to provide a low-voltage-difference power supply for the rest voltage reduction modules, so that power supply ripples and the PCB area are greatly reduced.

The fifth voltage-reducing module 162 converts the 12V dc power into 5V dc power, and outputs the 5V dc power to the display module 7 to supply power to the display module 7, for example, to supply power to the nixie tube display circuit 72 in the display module 7.

The sixth voltage reduction module 163 converts the 12V dc to 3.3V, 2.5V and 1.2V dc, where the 3.3V dc is used to supply power to the FPGA26 and the micro control unit 6, the 2.5V dc is used to supply power to the video interface chip, and the 1.2V dc is used to supply power to the FPGA26 core.

In a possible implementation, as shown in fig. 6, the transmission device further comprises a micro control unit 6 and a display unit 7, and the composite interface 5 further has an electrical signal interface 53 integrated therein. The micro-control unit 6 is connected to the electrical signal interface 53 and to the display unit 7. As shown in fig. 7, the micro control unit 6 is connected to two interface internal signal lines 531 of the composite interface 5.

The micro control unit 6 can receive the voltage value sent by the near-end transmission device b through the electric signal interface 53, and send the voltage value to the display part 7, and the voltage value is displayed by the display part 7.

Illustratively, as shown in fig. 7, the display section 7 includes an LED display circuit 71, a nixie tube display circuit 72, and a storage/control circuit 73.

As shown in fig. 6, the pan/tilt/zoom signal transmission unit 2 includes an RJ45 interface 21, an ethernet PHY chip 22, an XLR interface 23, an RS-422/RS-485 input interface chip 24, an RS-422/RS-485 output interface chip 25, an FPGA26, and a first photoelectric conversion unit 27.

transmission of pan-tilt control signals:

the far-end transmission device d can receive the pan-tilt control signal through the photoelectric composite cable c. Specifically, the transmission device receives the pan/tilt control signal transmitted by the optical/electrical composite cable c through the optical fiber interface 52, and transmits the pan/tilt control signal to the wavelength division multiplexer 4, the wavelength division multiplexer 4 transmits the pan/tilt control signal to the optical port end of the first photoelectric conversion component 27, and the first photoelectric conversion component 27 converts the pan/tilt control signal in the form of an optical signal into the pan/tilt control signal in the form of an electrical signal, and transmits the pan/tilt control signal to the FPGA 26.

The FPGA26 transmits the pan-tilt control signal to the Ethernet PHY chip 22, and the Ethernet PHY chip 22 transmits the pan-tilt control signal to the remote control pan-tilt e through the RJ45 interface 21 and the pan-tilt signal line. Or the FPGA26 transmits the pan-tilt control signal to the RS-422/RS-485 output interface chip 25, and the RS-422/RS-485 output interface chip 25 transmits the pan-tilt control signal to the remote control pan-tilt e through the XLR interface 23 and the pan-tilt signal line.

Transmission of the tripod head state signal:

the remote control pan-tilt e can send the state signal (such as moving speed, angle and position) of the remote control pan-tilt e to the camera background a, so that the staff can check the state signal.

The transmission device receives the pan-tilt status signal sent by the remote pan-tilt e through the pan-tilt signal line through the RJ45 interface 21, and transmits the pan-tilt status signal to the ethernet PHY chip 22. The ethernet PHY chip 22 transmits the pan head state signal to the FPGA26, the FPGA26 transmits the pan head state signal to the electrical port of the first photoelectric conversion part 27, and the first photoelectric conversion part 27 converts the pan head state signal in the form of an electrical signal into the pan head state signal in the form of an optical signal and transmits the pan head state signal to the wavelength division multiplexer 4. Transmitted to the optical fiber interface 52 by the wavelength division multiplexer 4, and transmitted to the optical/electrical composite cable c by the optical fiber interface 52, and further transmitted to the near end.

Or;

the XLR interface 23 receives the pan-tilt status signal sent by the pan-tilt signal line and transmits the pan-tilt status signal to the RS-422/RS-485 input interface chip 24, the RS-422/RS-485 input interface chip 24 transmits the pan-tilt status signal to the FPGA26, the FPGA26 transmits the pan-tilt status signal to the electrical port end of the first photoelectric conversion component 27, and the first photoelectric conversion component 27 converts the pan-tilt status signal in the form of an electrical signal into the pan-tilt status signal in the form of an optical signal and transmits the pan-tilt status signal to the wavelength division multiplexer 4. Transmitted to the optical fiber interface 52 by the wavelength division multiplexer 4, and transmitted to the optical/electrical composite cable c by the optical fiber interface 52, and further transmitted to the near end.

The cradle head signal transmission part 2 provided by the embodiment of the application can be compatible with a TCP/IP control protocol and an RS422/RS485 control protocol by simultaneously arranging the Ethernet PHY chip 22, the RS-422/RS-485 input interface chip 24 and the RS-422/RS-485 output interface chip 25, can be matched with control protocols of different remote control cradle head manufacturers, and has stronger universality.

As shown in fig. 6, the video signal transmission section 3 includes a video signal output interface 31, a video signal input interface 32, and a second photoelectric conversion section 33.

Here, the video signal output interface 31 and the video signal input interface 32 may both be SDI interfaces.

The operating principle of the video signal transmission section 3 is:

transmission of video signals at the far end:

the video signal captured by the camera f is transmitted to the video signal input interface 32 via a video signal line. The video signal input interface 32 transmits a video signal to the electrical port terminal of the second photoelectric conversion section 33. The second photoelectric conversion section 33 converts the video signal in the form of an electrical signal into a video signal in the form of an optical signal, and transmits to the branch port of the wavelength division multiplexer 4. The wavelength division multiplexer 4 transmits the video signal to the optical fiber interface 52 through the common port, and the optical fiber interface 52 transmits the video signal to the optical electrical composite cable c and transmits the video signal to the near-end transmission device b through the optical electrical composite cable c.

Reception of video signal at near end:

the camera shooting background a can process the received video signal and transmit the processed video signal to the far-end transmission equipment d through the video signal line and the near-end transmission equipment b.

The optical fiber interface 52 in the composite interface 5 of the remote transmission device d receives the video signal transmitted by the optical-electrical composite cable c and transmits the video signal to the common port of the wavelength division multiplexer 4. The wavelength division multiplexer 4 transmits the video signal to the optical port end of the second photoelectric conversion section 33 through the branch port. The second photoelectric conversion section 33 converts the video signal in the form of an optical signal into a video signal in the form of an electrical signal, and transmits it to the video signal output interface 31 through the electrical port.

Illustratively, as shown in fig. 7, the video signal output interfaces 31 may be two. The transmission device may further include a video signal loop-out interface 34, and the video signal loop-out interface 34 is used for outputting the video signal input by the video input interface 32. That is, after receiving the video signal output interface 31, the second photoelectric conversion unit 33 sends one path to the wavelength division multiplexer 4, and sends the other path to the video signal loop output interface 34.

As shown in fig. 7, the wavelength division multiplexer 4 may be connected to one interface internal fiber 521 in the composite interface 5. The composite interface 5 also has one interface internal fiber 521 left, and the one interface internal fiber 521 can be connected to the optical flange 8. That is, the transmission apparatus reserves a path for transmitting the optical signal.

The above description is only an example of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the principles of the present application should be included in the scope of the present application.

Claims

1. A transmission device, characterized in that the transmission device comprises a power transmission component (1), a pan-tilt signal transmission component (2), a video signal transmission component (3), a wavelength division multiplexer (4) and a composite interface (5), wherein the composite interface (5) is used for connecting with an optical-electrical composite cable, and a power interface (51) and an optical fiber interface (52) are integrated in the composite interface (5);

the first end of the power transmission component (1) is used for being connected with a power supply line, and the second end of the power transmission component (1) is connected with the power interface (51);

the first end of the cradle head signal transmission component (2) is used for being connected with a cradle head signal line, and the second end of the cradle head signal transmission component (2) is connected with a branch port of the wavelength division multiplexer (4);

the first end of the video signal transmission part (3) is used for being connected with a video signal line, and the second end of the video signal transmission part (3) is connected with a branch port of the wavelength division multiplexer (4);

the common port of the wavelength division multiplexer (4) is connected with the optical fiber interface (52).

2. The transmission apparatus according to claim 1, wherein the power transmission means (1) comprises an ac power input interface (11), an ac-to-dc means (12), a first power protection means (13) and a first voltage reduction means (14);

the input end of the alternating current power supply input interface (11) is used for being connected with a power supply line, the output end of the alternating current power supply input interface (11) is connected with the input end of the alternating current-to-direct current component (12), the output end of the alternating current-to-direct current component (12) is connected with the input end of the first power supply protection component (13), and the output end of the first power supply protection component (13) is connected with the power supply interface (51);

the output end of the AC-to-DC conversion component (12) is also connected with the input end of the first voltage reduction component (14), and the output end of the first voltage reduction component (14) is connected with power consumption components in the transmission equipment.

3. Transmission device according to claim 2, characterized in that it further comprises a micro-control unit (6), said composite interface (5) also having integrated therein an electrical signal interface (53);

the micro control unit (6) is connected with the electric signal interface (53) and is connected with the first power supply protection component (13).

4. Transmission device according to claim 3, characterized in that it further comprises a display means (7), said display means (7) being connected to said micro-control unit (6).

5. The transmission apparatus according to claim 1, wherein the power transmission section (1) includes a second power supply protection section (15), a second voltage step-down section (16), and a direct current power supply output interface (17);

the input of second power supply protection part (15) with power source (51) are connected, the output of second power supply protection part (15) with the input of second voltage reduction part (16) is connected, the output of second voltage reduction part (16) with the input of DC power supply output interface (17) is connected, the output of DC power supply output interface (17) is used for being connected with the power supply line.

6. Transmission device according to claim 5, characterized in that it further comprises a micro-control unit (6) and a display means (7), said composite interface (5) further having integrated therein an electrical signal interface (53);

the micro-control unit (6) is connected with the electric signal interface (53) and is connected with the display part (7).

7. Transmission device according to any of claims 1 to 6, characterized in that said pan-tilt signal transmission means (2) comprise an RJ45 interface (21), an Ethernet PHY chip (22), an XLR interface (23), an RS-422/RS-485 input interface chip (24), an RS-422/RS-485 output interface chip (25), a field programmable gate array FPGA (26) and a first opto-electronic conversion means (27);

a first end of the RJ45 interface (21) is used for being connected with a cradle head signal line, a second end of the RJ45 interface (21) is connected with a first end of the Ethernet PHY chip (22), and a second end of the Ethernet PHY chip (22) is connected with a first end of the FPGA (26);

the first end of the XLR interface (23) is used for being connected with a cradle head signal line, the second end of the XLR interface (23) is connected with the first end of the RS-422/RS-485 input interface chip (24) and the first end of the RS-422/RS-485 output interface chip (25), and the second end of the RS-422/RS-485 input interface chip (24) and the second end of the RS-422/RS-485 output interface chip (25) are both connected with the first end of the FPGA (26);

the second end of the FPGA (26) is connected with the electrical port end of the first photoelectric conversion component (27), and the optical port end of the first photoelectric conversion component (27) is connected with the branch port of the wavelength division multiplexer (4).

8. The transmission apparatus according to any one of claims 1 to 6, wherein the video signal transmission section (3) includes a video signal output interface (31), a video signal input interface (32), and a second photoelectric conversion section (33);

the output end of the video signal output interface (31) and the input end of the video signal input interface (32) are both used for being connected with a video signal line;

the input end of the video signal output interface (31) and the output end of the video signal input interface (32) are both connected with the electrical port end of the second photoelectric conversion part (33), and the optical port end of the second photoelectric conversion part (33) is connected with the branch port of the wavelength division multiplexer (4).

9. Transmission device according to any of claims 1 to 6, characterized in that said composite interface (5) is a LEMO interface.

10. A camera system, comprising a camera background (a), a near-end transmission device (b), a photoelectric composite cable (c), a far-end transmission device (d), a remote control pan-tilt (e), and a camera (f), wherein the camera (f) is fixed on the remote control pan-tilt (e), and the near-end transmission device (b) and the far-end transmission device (d) are both the transmission devices as claimed in claim 1;

the camera shooting background (a) is respectively connected with the power transmission part (1) of the near-end transmission device (b), the holder signal transmission part (2) and the video signal transmission part (3) through a power supply line, a holder signal line and a video signal line;

the composite interface (5) of the near-end transmission device (b) is connected with the first end of the photoelectric composite cable (c), and the second end of the photoelectric composite cable (c) is connected with the composite interface (5) of the far-end transmission device (d);

the power transmission part (1) of the far-end transmission device (d) and the tripod head signal transmission part (2) are respectively connected with the remote control tripod head (e) through a power supply line and a tripod head signal line, and the video signal transmission part (3) of the far-end transmission device (d) is connected with the camera (f) through a video signal line.