CN217721314U

CN217721314U - AOC cable, CXP change light box and light change CXP box

Info

Publication number: CN217721314U
Application number: CN202221471220.9U
Authority: CN
Inventors: 张鸿东; 邓爽; 蒋志斌; 邱宇鑫; 吉杉林
Original assignee: Hangzhou Hikrobot Co Ltd
Current assignee: Hangzhou Hikrobot Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-11-01
Anticipated expiration: 2032-06-10

Abstract

The utility model provides a AOC cable, CXP change light box and light change CXP box, the AOC cable includes: a appointed connector for being connected with the camera, CXP change light circuit, optic fibre, light change CXP circuit, be used for with gather the appointed connector that the card is connected, CXP change light circuit pass through optic fibre with light changes CXP circuit connection. Through the technical scheme of the utility model, can transmit CXP signal of telecommunication conversion for light signal, and through optical fiber transmission light signal, optical fiber transmission has advantages such as the interference killing feature is strong, transmission distance is far away, transmission bandwidth height.

Description

AOC cable, CXP change light box and light change CXP box

Technical Field

The utility model relates to a machine vision technical field especially relates to an AOC cable, CXP change light box and light change CXP box.

Background

CXP (CoaXPress) is an asymmetric high-speed serial communication standard of a coaxial cable, is an asymmetric high-speed point-to-point serial communication digital interface standard, and is a digital interface specification developed for the machine vision industry. Among other things, CXP allows devices (such as cameras) to be connected to a host computer (such as an acquisition card in a personal computer) via a coaxial cable to transmit image data at speeds up to 6.25 gbits/sec.

For example, the camera may be a camera supporting CXP, the acquisition card may be an acquisition card supporting CXP, the camera and the acquisition card are connected by a coaxial cable, the camera may send a CXP signal to the acquisition card through the coaxial cable, and the acquisition card may send a CXP signal to the camera through the coaxial cable.

When CXP signals are transmitted through the coaxial cable, the transmission distance of the coaxial cable is limited, the signal attenuation of the coaxial cable is serious, the anti-interference capability is weak, the coaxial cable is heavy, and the coaxial cable is inconvenient to use and is easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model provides a AOC cable, the AOC cable includes: a appointed connector for being connected with the camera, CXP change light circuit, optic fibre, light change CXP circuit, be used for with gather the appointed connector that the card is connected, CXP change light circuit pass through optic fibre with light changes CXP circuit connection.

Illustratively, the designated connector is a DIN connector or a BNC connector.

Illustratively, the CXP optical converter circuit is configured to receive a first CXP electrical signal sent by the camera, convert the first CXP electrical signal into a first optical signal, and send the first optical signal to the optical CXP optical converter circuit; the optical-to-CXP circuit is used for receiving the first optical signal, converting the first optical signal into a second CXP electric signal and sending the second CXP electric signal to the acquisition card;

the optical-to-CXP circuit is used for receiving a third CXP electric signal sent by the acquisition card, converting the third CXP electric signal into a second optical signal and sending the second optical signal to the CXP optical-to-CXP circuit; the CXP light conversion circuit is used for receiving the second optical signal, converting the second optical signal into a fourth CXP electric signal and sending the fourth CXP electric signal to the camera.

Exemplarily, the CXP-to-CXP circuit includes a receiving module and a first photoelectric conversion module, and the optical-to-CXP circuit includes a second photoelectric conversion module and a transmitting module, wherein:

the receiving module is used for receiving a first CXP electrical signal sent by the camera, converting the first CXP electrical signal into a first differential signal, and sending the first differential signal to the first photoelectric conversion module;

the first photoelectric conversion module is configured to receive the first differential signal, convert the first differential signal into a first optical signal, and send the first optical signal to a second photoelectric conversion module;

the second photoelectric conversion module is configured to receive the first optical signal, convert the first optical signal into a second differential signal, and send the second differential signal to the sending module;

and the sending module is used for receiving the second differential signal, converting the second differential signal into a second CXP electric signal and sending the second CXP electric signal to the acquisition card.

Exemplarily, the CXP to optical circuit includes a receiving module, a first level shift module and a first photoelectric conversion module, the optical to CXP circuit includes a second photoelectric conversion module, a second level shift module and a transmitting module, wherein: the transmitting module is configured to receive a third CXP electrical signal sent by the acquisition card, and send the third CXP electrical signal to the second level conversion module;

the second level conversion module is configured to receive the third CXP electrical signal, convert the third CXP electrical signal into a third differential signal, and send the third differential signal to a second photoelectric conversion module;

the second photoelectric conversion module is configured to receive the third differential signal, convert the third differential signal into a second optical signal, and send the second optical signal to the first photoelectric conversion module;

the first photoelectric conversion module is configured to receive the second optical signal, convert the second optical signal into a fourth differential signal, and send the fourth differential signal to the first level conversion module;

the first level conversion module is configured to receive the fourth differential signal, convert the fourth differential signal into a fourth CXP electrical signal, and send the fourth CXP electrical signal to a reception module; the receiving module is configured to receive the fourth CXP electrical signal and send the fourth CXP electrical signal to the camera.

The utility model provides a CXP changes light box, CXP changes light box includes: the optical fiber connector comprises a designated connector, a CXP light conversion circuit and an optical fiber connection interface, wherein the designated connector is used for being connected with a camera; wherein:

the CXP optical conversion circuit is used for converting the CXP electric signal into an optical signal after receiving the CXP electric signal sent by the camera, and sending the optical signal through the optical fiber connection interface;

and/or after receiving an optical signal through the optical fiber connection interface, converting the optical signal into a CXP electrical signal, and sending the CXP electrical signal to the camera through the designated connector.

Illustratively, the designated connector comprises a DIN connector and/or a BNC connector; if the camera has a DIN connector, the DIN connector of the CXP light conversion box is connected with the DIN connector of the camera; if the camera has a BNC connector, the BNC connector of the CXP light box is connected with the BNC connector of the camera.

Exemplarily, the CXP light conversion circuit includes a receiving module, a level conversion module and a photoelectric conversion module, wherein: the receiving module is used for receiving the CXP electric signal sent by the camera, converting the CXP electric signal into a differential signal and sending the differential signal to the photoelectric conversion module;

the photoelectric conversion module is used for receiving the differential signal, converting the differential signal into an optical signal and sending the optical signal through the optical fiber connection interface;

and/or the photoelectric conversion module is configured to receive an optical signal through the optical fiber connection interface, convert the optical signal into a differential signal, and send the differential signal to the level conversion module;

the level conversion module is configured to receive the differential signal, convert the differential signal into a CXP electrical signal, and send the CXP electrical signal to the reception module;

the receiving module is used for receiving the CXP electric signals and sending the CXP electric signals to a camera.

The utility model provides a light changes CXP box, light changes CXP box includes: the optical fiber connector comprises a designated connector used for being connected with a collecting card, an optical fiber-to-CXP circuit and an optical fiber connection interface; wherein:

the optical-to-CXP circuit is used for converting an optical signal into a CXP electrical signal after receiving the optical signal through the optical fiber connection interface and sending the CXP electrical signal to the acquisition card;

and/or after receiving the CXP electric signal sent by the acquisition card, converting the CXP electric signal into an optical signal, and sending the optical signal through the optical fiber connection interface.

Illustratively, the designated connector comprises a DIN connector and/or a BNC connector; if the acquisition card is provided with a DIN connector, connecting the DIN connector of the optical-to-CXP box with the DIN connector of the acquisition card; if the acquisition card has a BNC connector, the BNC connector of the optical-to-CXP box is connected with the BNC connector of the acquisition card.

Illustratively, the optical-to-CXP circuit includes a photoelectric conversion module, a level conversion module, and a transmission module, wherein: the photoelectric conversion module is used for receiving an optical signal through the optical fiber connection interface, converting the optical signal into a differential signal, and sending the differential signal to the sending module;

the sending module is used for receiving the differential signal, converting the differential signal into a CXP electric signal and sending the CXP electric signal to the acquisition card;

and/or the sending module is used for receiving the CXP electric signal sent by the acquisition card and sending the CXP electric signal to the level conversion module;

the level conversion module is configured to receive the CXP electrical signal, convert the CXP electrical signal into a differential signal, and send the differential signal to the photoelectric conversion module;

the photoelectric conversion module is configured to receive the differential signal, convert the differential signal into an optical signal, and send the optical signal through the optical fiber connection interface.

According to the above technical scheme, the utility model discloses in, can transmit the CXP signal of telecommunication conversion for light signal, and through optical fiber transmission light signal, and need not transmit the CXP signal of telecommunication through coaxial cable. When optical signals are transmitted through the optical fibers, the optical fiber transmission has the advantages of strong anti-interference capability, long transmission distance, high transmission bandwidth, small and light cable, low cost, high cost performance, convenience in use, difficulty in damage and the like, and is very suitable for application scenes of long distance and high bandwidth.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required to be used in the description of the present invention or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings of the present invention.

Fig. 1 is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 3A is a schematic connection diagram of an AOC cable according to an embodiment of the present invention;

fig. 3B is a schematic connection diagram of an AOC cable according to an embodiment of the present invention;

fig. 3C is a schematic connection diagram of an adapter box according to an embodiment of the present invention;

fig. 4A is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 4B is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 4C is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 4D is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 5A is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 5B is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 6 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention.

Detailed Description

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and in the claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items. It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention. Depending on the context, moreover, the use of the word "if" can be interpreted as "at … …" or "at … …" or "in response to a determination.

Referring to fig. 1, the data acquisition system includes a camera 10 and an acquisition card 20, where the camera 10 may be a camera supporting CXP, which may be referred to as a CXP camera, and the acquisition card 20 may be an acquisition card supporting CXP, which may be referred to as a CXP acquisition card, and the camera 10 and the acquisition card 20 are connected by a coaxial cable. The camera 10 sends CXP signals to the acquisition card 20 through the coaxial cable, that is, image data is transmitted through the CXP signals, and the acquisition card 20 sends CXP signals to the camera 10 through the coaxial cable, that is, control data is transmitted through the CXP signals.

When CXP signals are transmitted through the coaxial cable, the transmission distance of the coaxial cable is limited, the signal attenuation of the coaxial cable is serious, the anti-interference capability is weak, the coaxial cable is heavy, and the CXP signal transmission device is inconvenient to use and easy to damage. In some application scenarios, there is a long-distance transmission requirement, for example, the distance between the camera 10 and the acquisition card 20 reaches 40KM, and the 40KM transmission requirement cannot be realized through the coaxial cable, that is, the user requirement cannot be met.

In view of the above discovery, the utility model discloses in, can deploy first conversion equipment and second conversion equipment between camera 10 and acquisition card 20, through fiber connection between first conversion equipment and the second conversion equipment, based on first conversion equipment and second conversion equipment, can transmit CXP signal of telecommunication conversion for light signal, and transmit light signal through optic fibre, and need not transmit the CXP signal of telecommunication through coaxial cable. When optical signals are transmitted through the optical fibers, the optical fiber transmission has the advantages of strong anti-interference capability, long transmission distance, high transmission bandwidth, small and light cable, low cost, high cost performance, convenience in use, difficulty in damage and the like, and is very suitable for application scenes of long distance and high bandwidth. For example, when the distance between the camera 10 and the acquisition card 20 reaches 40KM, the transmission requirement of 40KM can be realized through the optical fiber, that is, the user requirement can be met.

Referring to fig. 2, the data acquisition system may include a camera 10, an acquisition card 20, a first conversion device 30 connected to the camera 10, and a second conversion device 40 connected to the acquisition card 20, and the first conversion device 30 and the second conversion device 40 are connected by an optical fiber. Obviously, the first conversion device 30 and the second conversion device 40 are connected by optical fiber, not by coaxial cable, and there is no direct connection between the camera 10 and the acquisition card 20, i.e. there is no need to connect the camera 10 and the acquisition card 20 by coaxial cable.

Illustratively, the camera 10 is a CXP-enabled camera, which may be referred to as a CXP camera, as the camera 10 may be a CXP 6-enabled camera, which may be referred to as a CXP6 camera, or the camera 10 may be a CXP 12-enabled camera, which may be referred to as a CXP12 camera. The acquisition card 20 is an acquisition card supporting CXP, which may be referred to as a CXP acquisition card, e.g. the acquisition card 20 may be an acquisition card supporting CXP6, which may be referred to as a CXP6 acquisition card, or the acquisition card 20 may be an acquisition card supporting CXP12, which may be referred to as a CXP12 acquisition card.

In one possible embodiment, the first conversion device 30 and the second conversion device 40 may be implemented by AOC (Active Optical Cables) Cables. One end of the AOC cable is used to connect with the camera 10, which may be referred to as a camera end device, and the other end of the AOC cable is used to connect with the acquisition card 20, which may be referred to as an acquisition card end device, i.e., the AOC cable is connected with the camera 10 through the camera end device and is connected with the acquisition card 20 through the acquisition card end device. Obviously, the optical fiber of the AOC cable is located between the camera end device and the acquisition card end device, that is, the camera end device and the acquisition card end device are connected through the optical fiber.

Illustratively, for the camera side device, the camera side device has a designated connector, and the camera side device is connected to the camera 10 through the designated connector. For the acquisition card end device, the acquisition card end device has a designated connector, and the acquisition card end device is connected with the acquisition card 20 through the designated connector.

In this case, the first conversion device 30 may be a camera end device of the AOC cable, and the camera 10 has a designated connector of the camera end device connected with the designated connector of the camera 10. The second conversion device 40 may be an acquisition card end device of the AOC cable, and the acquisition card 20 has a designated connector, the designated connector of the acquisition card end device being connected with the designated connector of the acquisition card 20.

The designated Connector may be a DIN (Deutsches institute fur Normung) Connector or a BNC (Bayonet Nut Connector) Connector, among others. Of course, the DIN connector and the BNC connector are only two examples, and the type of the designated connector is not limited thereto.

For example, referring to fig. 3A, the camera end device (i.e., the first conversion device 30) of the AOC cable 30 has a DIN connector, the camera 10 has a DIN connector, and the DIN connector of the AOC cable 30 is connected to the DIN connector of the camera 10, for example, the DIN connector of the AOC cable 30 is inserted into the DIN connector of the camera 10. Wherein the camera end device of the AOC cable 30 may include M DIN connectors, the camera 10 may include M DIN connectors, and M may be a positive integer, in fig. 3A, the camera end device of the AOC cable 30 includes 4 DIN connectors, and the camera 10 includes 4 DIN connectors, and obviously, 4 pairs of DIN connectors may be respectively plug-connected.

With continued reference to fig. 3A, the acquisition card end device (i.e. the second conversion device 40) of the AOC cable 30 has a DIN connector, the acquisition card 20 has a DIN connector, and the DIN connector of the AOC cable 30 is connected with the DIN connector of the acquisition card 20, for example, the DIN connector of the AOC cable 30 is connected with the DIN connector of the acquisition card 20 by plug-in connection. In fig. 3A, the acquisition card end device of the AOC cable 30 includes 4 DIN connectors, and the acquisition card 20 includes 4 DIN connectors, and obviously, 4 pairs of DIN connectors may be respectively connected in an inserted manner.

In summary, it can be seen that the first conversion device 30 and the second conversion device 40 can be implemented by using AOC cables, one end of which is inserted into the DIN connector of the camera 10 by using a DIN connector, and the other end of which is inserted into the DIN connector of the acquisition card 20 by using a DIN connector. In addition, an optical fiber is arranged between the two ends of the AOC cable, and in the mode, the optical fiber can be in the form of a single-mode single fiber.

For example, referring to fig. 3B, the camera end device (i.e., the first conversion device 30) of the AOC cable 30 has a BNC connector, the camera 10 has a BNC connector, and the BNC connector of the AOC cable 30 is connected to the BNC connector of the camera 10, such that the BNC connector of the AOC cable 30 is plugged into the BNC connector of the camera 10. Wherein the camera end device of AOC cable 30 may include N BNC connectors, and camera 10 may include N BNC connectors, N may be a positive integer, in fig. 3B, the camera end device of AOC cable 30 includes 4 BNC connectors, and camera 10 includes 4 BNC connectors, and obviously, 4 pairs of BNC connectors may be respectively connected in a plug-in manner.

With continued reference to fig. 3B, the acquisition card end device (i.e., the second conversion device 40) of AOC cable 30 has a BNC connector, the acquisition card 20 has a BNC connector, and the BNC connector of AOC cable 30 is connected to the BNC connector of acquisition card 20, e.g., the BNC connector of AOC cable 30 is connected to the BNC connector of acquisition card 20 by plugging. In fig. 3B, the acquisition card end device of the AOC cable 30 includes 4 BNC connectors, the acquisition card 20 includes 4 BNC connectors, and the 4 pairs of BNC connectors may be connected in opposite insertion manner respectively.

In summary, it can be seen that the first conversion device 30 and the second conversion device 40 can be implemented by AOC cables, one end of which is plugged to the BNC connector of the camera 10 by using a BNC connector, and the other end of which is plugged to the BNC connector of the acquisition card 20 by using a BNC connector. In addition, an optical fiber is arranged between the two ends of the AOC cable, and in the mode, the optical fiber can be in the form of a single-mode single fiber.

In another possible embodiment, the first conversion device 30 is a CXP light box with a DIN connector and/or a BNC connector, if the camera 10 has a DIN connector, the DIN connector of the CXP light box is connected with the DIN connector of the camera 10; if the camera 10 has a BNC connector, the BNC connector of the CXP pod is connected to the BNC connector of the camera 10. The second conversion means 40 is an optical-to-CXP box with a DIN connector and/or a BNC connector, the DIN connector of the optical-to-CXP box being connected to the DIN connector of the acquisition card 20 if the acquisition card 20 has a DIN connector; if the acquisition card 20 has a BNC connector, the BNC connector of the opto-CXP box is connected to the BNC connector of the acquisition card 20.

For example, the first conversion device 30 is a CXP light conversion box having a DIN connector, and the camera 10 has a DIN connector, and the DIN connector of the CXP light conversion box is connected to the DIN connector of the camera 10, for example, the DIN connector of the CXP light conversion box is inserted into the DIN connector of the camera 10.

The second conversion means 40 is an optical-to-CXP box with a DIN connector, and the acquisition card 20 has a DIN connector, the DIN connector of the optical-to-CXP box being connected to the DIN connector of the acquisition card 20, e.g. the DIN connector of the optical-to-CXP box is plug-connected to the DIN connector of the acquisition card 20.

For another example, the first conversion device 30 is a CXP pod having a BNC connector, and the camera 10 has a BNC connector, the BNC connector of the CXP pod being connected with the BNC connector of the camera 10, such as the BNC connector of the CXP pod being connected with the BNC connector of the camera 10 in a plug-and-socket manner.

The second conversion device 40 is an optical-to-CXP box having a BNC connector, and the acquisition card 20 has a BNC connector, and the BNC connector of the optical-to-CXP box is connected to the BNC connector of the acquisition card 20, for example, the BNC connector of the optical-to-CXP box is connected to the BNC connector of the acquisition card 20 by plugging.

For another example, referring to fig. 3C, the first conversion device 30 is a CXP light conversion box having a DIN connector and a BNC connector, and if the camera 10 has the DIN connector, the DIN connector of the CXP light conversion box is connected to the DIN connector of the camera 10, such as a plug-and-socket connection. If the camera 10 has a BNC connector, the BNC connector of the CXP pod is connected to the BNC connector of the camera 10, e.g., a docking connection. The second conversion means 40 is an optical-to-CXP box having a DIN connector and a BNC connector, and if the acquisition card 20 has a DIN connector, the DIN connector of the optical-to-CXP box is connected to the DIN connector of the acquisition card 20, such as by mating. If the acquisition card 20 has a BNC connector, the BNC connector of the opto-CXP box is connected to the BNC connector of the acquisition card 20, e.g., by mating.

Wherein the CXP relay box may include M DIN connectors and N BNC connectors, the camera 10 may include M DIN connectors or N BNC connectors, M and N may be positive integers, and in fig. 3C, the CXP relay box includes 4 DIN connectors and 4 BNC connectors. On this basis, if the camera 10 includes 4 DIN connectors, the 4 DIN connectors of the CXP relay box are mated and connected with the 4 DIN connectors of the camera 10. If the camera 10 includes 4 BNC connectors, the 4 BNC connectors of the CXP pod are mated with the 4 BNC connectors of the camera 10.

Wherein the optical-to-CXP box may comprise M DIN connectors and N BNC connectors, the acquisition card 20 may comprise M DIN connectors or N BNC connectors, and in fig. 3C, the optical-to-CXP box comprises 4 DIN connectors and 4 BNC connectors. On this basis, if the acquisition card 20 comprises 4 DIN connectors, the 4 DIN connectors of the optical-to-CXP box are connected to the 4 DIN connectors of the acquisition card 20 by means of plug-in connections. If the acquisition card 20 includes 4 BNC connectors, the 4 BNC connectors of the optical-to-CXP box are connected to the 4 BNC connectors of the acquisition card 20 by plugging.

In summary, it can be seen that the CXP light box can be a junction box that provides 4 DIN connectors and 4 BNC connectors externally, the 4 DIN connectors for connecting the cameras 10,4 BNC connectors with DIN connectors for connecting the cameras 10 with BNC connectors.

The opto-relay CXP box may be a switch box providing 4 DIN connectors and 4 BNC connectors externally, the 4 DIN connectors for connecting the acquisition card 20,4 with DIN connectors for connecting the acquisition card 20 with BNC connectors.

The CXP changes light box and light changes the CXP box and can pass through fiber connection, for example, can connect through ordinary optic fibre jumper, when connecting through optic fibre, can select for use the LC interface to connect.

In summary, the utility model provides an AOC cable, AOC cable can include: a appointed connector, CXP change light circuit, optic fibre, light that are used for being connected with the camera change the CXP circuit, be used for with gather the appointed connector that the card is connected, and CXP changes light circuit and changes the CXP circuit connection through optic fibre and light.

Illustratively, the designated connector is a DIN connector; alternatively, the designated connector is a BNC connector.

Illustratively, the CXP optical conversion circuit is configured to receive a first CXP electrical signal sent by the camera, convert the first CXP electrical signal into a first optical signal, and send the first optical signal to the optical conversion CXP circuit. And the optical-to-CXP circuit is used for receiving the first optical signal, converting the first optical signal into a second CXP electrical signal and sending the second CXP electrical signal to the acquisition card. And/or the optical-to-CXP circuit is used for receiving the third CXP electric signal sent by the acquisition card, converting the third CXP electric signal into a second optical signal and sending the second optical signal to the CXP optical-to-CXP circuit. The CXP light conversion circuit is used for receiving the second optical signal, converting the second optical signal into a fourth CXP electric signal and sending the fourth CXP electric signal to the camera.

Exemplarily, the CXP-to-CXP circuit includes a receiving module and a first photoelectric conversion module, and the optical-to-CXP circuit includes a second photoelectric conversion module and a transmitting module, wherein: the receiving module is used for receiving a first CXP electric signal sent by the camera, converting the first CXP electric signal into a first differential signal and sending the first differential signal to the first photoelectric conversion module; the first photoelectric conversion module is used for receiving the first differential signal, converting the first differential signal into a first optical signal and sending the first optical signal to the second photoelectric conversion module; the second photoelectric conversion module is used for receiving the first optical signal, converting the first optical signal into a second differential signal and sending the second differential signal to the sending module; and the sending module is used for receiving the second differential signal, converting the second differential signal into a second CXP electric signal and sending the second CXP electric signal to the acquisition card.

Exemplarily, the CXP-to-CXP circuit includes a receiving module, a first level shift module and a first photoelectric conversion module, and the optical-to-CXP circuit includes a second photoelectric conversion module, a second level shift module and a transmitting module, wherein: the transmitting module is used for receiving the third CXP electric signal transmitted by the acquisition card and transmitting the third CXP electric signal to the second level conversion module; the second level conversion module is used for receiving the third CXP electrical signal, converting the third CXP electrical signal into a third differential signal and sending the third differential signal to the second photoelectric conversion module; the second photoelectric conversion module is used for receiving the third differential signal, converting the third differential signal into a second optical signal and sending the second optical signal to the first photoelectric conversion module; the first photoelectric conversion module is used for receiving the second optical signal, converting the second optical signal into a fourth differential signal and sending the fourth differential signal to the first level conversion module; the first level conversion module is used for receiving the fourth differential signal, converting the fourth differential signal into a fourth CXP electrical signal and sending the fourth CXP electrical signal to the receiving module; and the receiving module is used for receiving the fourth CXP electric signal and sending the fourth CXP electric signal to the camera.

For this solution, in the following embodiments, the designated connector and the CXP optical conversion circuit for connecting with the camera are referred to as a first conversion device (i.e., a camera end device of the AOC cable), and the designated connector and the optical conversion CXP circuit for connecting with the acquisition card are referred to as a second conversion device (i.e., an acquisition card end device of the AOC cable), and obviously, the first conversion device and the second conversion device are connected by an optical fiber of the AOC cable.

The function and structure of the first conversion means are both the function and structure of the CXP-to-optical circuit, and the function and structure of the second conversion means are both the function and structure of the optical-to-CXP circuit.

The utility model discloses in still provide a CXP commentaries on classics light box, CXP changes light box can include: the optical fiber connector comprises a designated connector, a CXP light conversion circuit and an optical fiber connection interface, wherein the designated connector is used for being connected with a camera; wherein: the CXP optical conversion circuit is used for converting the CXP electric signal into an optical signal after receiving the CXP electric signal sent by the camera and sending the optical signal through the optical fiber connection interface; and/or after receiving the optical signal through the optical fiber connection interface, converting the optical signal into a CXP electrical signal, and sending the CXP electrical signal to the camera through the designated connector.

Illustratively, the designated connector includes a DIN connector and/or a BNC connector; if the camera has a DIN connector, the DIN connector of the CXP light conversion box is connected with the DIN connector of the camera; if the camera has a BNC connector, the BNC connector of the CXP pod is connected with the BNC connector of the camera.

Illustratively, the CXP light conversion circuit may include a receiving module, a level conversion module, and a photoelectric conversion module, wherein: the receiving module is used for receiving the CXP electric signals sent by the camera, converting the CXP electric signals into differential signals and sending the differential signals to the photoelectric conversion module; the photoelectric conversion module is used for receiving the differential signal, converting the differential signal into an optical signal and sending the optical signal through the optical fiber connection interface; and/or the photoelectric conversion module is used for receiving the optical signal through the optical fiber connection interface, converting the optical signal into a differential signal and sending the differential signal to the level conversion module; the level conversion module is used for receiving the differential signal, converting the differential signal into a CXP electric signal and sending the CXP electric signal to the receiving module; and the receiving module is used for receiving the CXP electric signals and sending the CXP electric signals to the camera.

For this scheme, in the following embodiments, the CXP light conversion box is referred to as a first conversion device, and the function and structure of the first conversion device both refer to the function and structure of the CXP light conversion box.

The utility model discloses in still provide a light and change CXP box, light changes the CXP box and can include: the optical fiber connector comprises a designated connector used for being connected with a collecting card, an optical fiber-to-CXP circuit and an optical fiber connection interface; wherein: the optical-to-CXP circuit is used for converting the optical signal into a CXP electric signal after receiving the optical signal through the optical fiber connection interface and sending the CXP electric signal to the acquisition card; and/or after receiving the CXP electric signal sent by the acquisition card, converting the CXP electric signal into an optical signal and sending the optical signal through the optical fiber connection interface.

The designated connector comprises a DIN connector and/or a BNC connector; if the acquisition card is provided with a DIN connector, connecting the DIN connector of the optical-to-CXP box with the DIN connector of the acquisition card; if the acquisition card has a BNC connector, the BNC connector of the optical-to-CXP box is connected with the BNC connector of the acquisition card.

Illustratively, the optical-to-CXP circuit may include a photoelectric conversion module, a level conversion module, and a transmission module, wherein: the photoelectric conversion module is used for receiving the optical signals through the optical fiber connection interface, converting the optical signals into differential signals and sending the differential signals to the sending module; the transmitting module is used for receiving the differential signal, converting the differential signal into a CXP electric signal and transmitting the CXP electric signal to the acquisition card; and/or the sending module is used for receiving the CXP electric signals sent by the acquisition card and sending the CXP electric signals to the level conversion module; the level conversion module is used for receiving the CXP electric signal, converting the CXP electric signal into a differential signal and sending the differential signal to the photoelectric conversion module; and the photoelectric conversion module is used for receiving the differential signal, converting the differential signal into an optical signal and transmitting the optical signal through the optical fiber connection interface.

For this solution, in the following embodiments, the light-to-CXP box is referred to as a second conversion device, and the function and structure of the second conversion device are referred to as the function and structure.

In a possible implementation manner, the camera 10 may send image data, that is, image data acquired by the camera 10, to the acquisition card 20, and the acquisition card 20 may send control data, that is, data for controlling the camera 10 by the acquisition card 20, to the camera 10.

The following describes a transmission process of image data and a transmission process of control data.

In the first case, when the camera 10 sends image data to the acquisition card 20, the following method may be adopted:

referring to fig. 4A, the camera 10 transmits a first CXP electrical signal (i.e., an electrical port signal) to the first conversion device 30, and the first conversion device 30 receives the first CXP electrical signal transmitted by the camera 10.

For example, since the camera 10 is a CXP-enabled camera, the camera 10 may carry image data via the first CXP electrical signal when the camera 10 sends image data to the acquisition card 20. The transmission speed of the first CXP electrical signal is relatively high, and is a high-speed signal, for example, the signal frequency of the first CXP electrical signal supports 12.5Gbps at most, and the signal frequency of the first CXP electrical signal is compatible with 6.25Gbps downward, and of course, the above is only an example of the signal frequency of the first CXP electrical signal, and is a high-speed signal.

Referring to fig. 4A, the first conversion device 30, after receiving the first CXP electrical signal, may convert the first CXP electrical signal into a first optical signal and send the first optical signal to the second conversion device 40.

For example, the first conversion device 30 is a device capable of converting CXP electrical signals into optical signals, such as the AOC cable or the CXP optical conversion box of the above embodiment, and the type of the first conversion device 30 is not limited, and the CXP electrical signals can be converted into optical signals, so that the first conversion device 30 can convert the first CXP electrical signals into the first optical signals after receiving the first CXP electrical signals.

After obtaining the first optical signal, the first conversion device 30 can transmit the first optical signal to the second conversion device 40 based on the optical fiber between the first conversion device 30 and the second conversion device 40. The transmission speed of the first optical signal is relatively high, and the first optical signal is a high-speed signal, for example, the signal frequency of the first optical signal supports 12.5Gbps at most, and the signal frequency of the first optical signal is compatible with 6.25Gbps downward.

Referring to fig. 4A, after receiving the first optical signal (e.g., receiving the first optical signal through an optical fiber), the second conversion device 40 may convert the first optical signal into a second CXP electrical signal, send the second CXP electrical signal to the acquisition card 20, and receive the second CXP electrical signal by the acquisition card 20.

For example, the second conversion device 40 is a device capable of converting an optical signal into a CXP electrical signal, such as the AOC cable or the optical-to-CXP box of the above embodiment, and the type of the second conversion device 40 is not limited, and an optical signal can be converted into a CXP electrical signal, so that the second conversion device 40 can convert the first optical signal into the second CXP electrical signal after receiving the first optical signal.

The second conversion means 40, after obtaining the second CXP electrical signal, may send the second CXP electrical signal to the acquisition card 20. The transmission speed of the second CXP electrical signal (the same as or similar to the first CXP electrical signal) is relatively high, and the second CXP electrical signal is a high-speed signal, for example, the signal frequency of the second CXP electrical signal supports 12.5Gbps at most, and the signal frequency of the second CXP electrical signal is compatible with 6.25Gbps downward.

Since the acquisition card 20 is an acquisition card supporting CXP, the acquisition card 20 can correctly receive the second CXP electrical signal and perform processing based on the second CXP electrical signal, and the processing process is not limited.

In summary, CXP electrical signals are successfully transmitted between the camera 10 and the acquisition card 20.

In one possible implementation, referring to fig. 4B, the first conversion device 30 may include a receiving module 31 (also referred to as a receiving chip, such as an EQCO receiving chip) and a first photoelectric conversion module 32, and the first photoelectric conversion module 32 is connected with the receiving module 31 through a receiving interface (TD _ I). The second conversion device 40 may include a second photoelectric conversion module 41 and a transmission module 42 (also referred to as a transmission chip, such as an EQCO transmission chip), and the second photoelectric conversion module 41 is connected to the transmission module 42 through a transmission interface (RX _ O). The first photoelectric conversion module 32 and the second photoelectric conversion module 41 are connected by an optical fiber, that is, LC interfaces exist in both the first photoelectric conversion module 32 and the second photoelectric conversion module 41, and the two are connected by the LC interfaces.

In the above application scenario, the process of sending the image data to the acquisition card 20 by the camera 10 includes:

referring to fig. 4B, the camera 10 transmits a first CXP electrical signal (i.e., an electrical port signal) to the receiving module 31 of the first conversion device 30, and the receiving module 31 receives the first CXP electrical signal transmitted by the camera 10.

Referring to fig. 4B, after receiving the first CXP electrical signal, the receiving module 31 may convert the first CXP electrical signal into a first differential signal, and send the first differential signal to the first photoelectric conversion module 32.

For example, the receiving module 31 is a receiving chip having a conversion function, and is capable of converting the CXP electrical signal into a Differential signal, such as an LVDS (Low Voltage Differential Signaling) signal, and the type of the receiving module 31 is not limited, and the CXP electrical signal may be converted into the Differential signal, so that the receiving module 31 may convert the first CXP electrical signal into the first Differential signal.

Referring to fig. 4B, after receiving the first differential signal, the first photoelectric conversion module 32 may convert the first differential signal into a first optical signal, and send the first optical signal to the second photoelectric conversion module 41.

For example, the first photoelectric conversion module 32 is a device capable of converting a differential signal into an optical signal, and the type of the first photoelectric conversion module 32 is not limited, and the differential signal may be converted into the optical signal, so that the first photoelectric conversion module 32 may convert the first differential signal into the first optical signal.

After the first optical signal is obtained by the first optical-to-electrical conversion module 32, based on the optical fiber between the first optical-to-electrical conversion module 32 and the second optical-to-electrical conversion module 41, the first optical signal can be sent to the second optical-to-electrical conversion module 41, the transmission speed of the first optical signal is relatively high, the first optical signal is a high-speed signal, for example, the signal frequency of the first optical signal supports 12.5Gbps at the highest, and the signal frequency of the first optical signal is compatible with 6.25Gbps downward.

Referring to fig. 4B, after receiving the first optical signal, the second photoelectric conversion module 41 may convert the first optical signal into a second differential signal, and transmit the second differential signal to the transmission module 42.

For example, the second photoelectric conversion module 41 is a device capable of converting an optical signal into a differential signal, and the type of the second photoelectric conversion module 41 is not limited, and the optical signal may be converted into the differential signal, so that the second photoelectric conversion module 41 may convert the first optical signal into the second differential signal.

Referring to fig. 4B, after receiving the second differential signal, the sending module 42 may convert the second differential signal into a second CXP electrical signal, and send the second CXP electrical signal to the acquisition card 20.

For example, the transmission module 42 is a transmission chip having a conversion function, and can convert the differential signal into a CXP electrical signal, and the type of the transmission module 42 is not limited, and the differential signal can be converted into a CXP electrical signal, so that the transmission module 42 can convert the second differential signal into a second CXP electrical signal.

The sending module 42 may also send the second CXP electrical signal to the acquisition card 20 after obtaining the second CXP electrical signal. The second CXP electrical signal is a high-speed signal, for example, the signal frequency of the second CXP electrical signal supports up to 12.5Gbps, and the signal frequency of the second CXP electrical signal is downward compatible with 6.25Gbps. Since the acquisition card 20 is a CXP-capable acquisition card, the acquisition card 20 can correctly receive the second CXP electrical signal and perform processing based on the second CXP electrical signal.

In case two, when the acquisition card 20 sends the control data to the camera 10, the following method may be adopted:

referring to fig. 4C, the acquisition card 20 sends a third CXP electrical signal (i.e., an electrical port signal) to the second conversion device 40, and the second conversion device 40 receives the third CXP electrical signal sent by the acquisition card 20.

For example, since the acquisition card 20 is a CXP-capable acquisition card, when the acquisition card 20 sends control data to the camera 10, the acquisition card 20 may carry the control data through the third CXP electrical signal. The transmission speed of the third CXP electrical signal is relatively low, and is a low-speed signal, for example, the signal frequency of the third CXP electrical signal supports up to 41.6Mbps, and the signal frequency of the third CXP electrical signal is downward compatible with 20.83Mbps, but the above is only an example of the signal frequency of the third CXP electrical signal, and is a low-speed signal.

Referring to fig. 4C, the second conversion device 40, after receiving the third CXP electrical signal, may convert the third CXP electrical signal into a second optical signal and send the second optical signal to the first conversion device 30.

For example, the second conversion device 40 is a device capable of converting CXP electrical signals into optical signals, such as the AOC cable or the optical-to-CXP box of the above embodiment, the type of the second conversion device 40 is not limited, and the CXP electrical signals can be converted into optical signals, so that the second conversion device 40 can convert the third CXP electrical signals into the second optical signals after receiving the third CXP electrical signals.

After obtaining the second optical signal, the second conversion device 40 can transmit the second optical signal to the first conversion device 30 based on the optical fiber between the first conversion device 30 and the second conversion device 40. The transmission speed of the second optical signal is relatively low, and the second optical signal is a low-speed signal, for example, the signal frequency of the second optical signal supports up to 41.6Mbps, and the signal frequency of the second optical signal is downward compatible with 20.83Mbps.

Referring to fig. 4C, the first conversion device 30 may convert the second optical signal into a fourth CXP electrical signal after receiving the second optical signal (e.g., receiving the second optical signal through an optical fiber), and transmit the fourth CXP electrical signal to the camera 10, where the fourth CXP electrical signal is received by the camera 10.

For example, the first conversion device 30 is a device capable of converting an optical signal into a CXP electrical signal, such as the AOC cable or the CXP optical conversion box of the above embodiment, and the type of the first conversion device 30 is not limited, and an optical signal can be converted into a CXP electrical signal, so that the first conversion device 30 can convert the second optical signal into a fourth CXP electrical signal after receiving the second optical signal.

The first conversion device 30, after obtaining the fourth CXP electrical signal, may send the fourth CXP electrical signal to the camera 10. The transmission speed of the fourth CXP electrical signal (the same as or similar to the third CXP electrical signal) is relatively low, and the fourth CXP electrical signal is a low-speed signal, for example, the signal frequency of the fourth CXP electrical signal supports up to 41.6Mbps, and the signal frequency of the fourth CXP electrical signal is downward compatible with 20.83Mbps.

Since the camera 10 is a CXP-enabled camera, the camera 10 can correctly receive the fourth CXP electrical signal and perform processing based on the fourth CXP electrical signal, and this processing procedure is not limited.

In summary, CXP electrical signals are successfully transmitted between the acquisition card 20 and the camera 10.

Referring to the above embodiment, the first CXP electrical signal is a high speed signal and the third CXP electrical signal is a low speed signal, and therefore the transmission speed of the first CXP electrical signal is greater than the transmission speed of the third CXP electrical signal. Further, the transmission speed of the first CXP electrical signal and the transmission speed of the second CXP electrical signal can be the same or similar, the transmission speed of the first CXP electrical signal and the transmission speed of the first optical signal can be the same or similar, the transmission speed of the third CXP electrical signal and the transmission speed of the fourth CXP electrical signal can be the same or similar, and the transmission speed of the third CXP electrical signal and the transmission speed of the second optical signal can be the same or similar.

In one possible implementation, referring to fig. 4D, the first conversion device 30 may include a receiving module 31 (also referred to as a receiving chip, such as an EQCO receiving chip), a first photoelectric conversion module 32, and a first level conversion module 33. The first photoelectric conversion module 32 is connected to the receiving module 31 through a receiving interface (TD _ I), the first photoelectric conversion module 32 is connected to the first level conversion module 33 through a transmitting interface (RD _ O), and the first level conversion module 33 is connected to the receiving module 31. The second conversion apparatus 40 may include a second photoelectric conversion module 41, a transmitting module 42 (also referred to as a transmitting chip, such as an EQCO transmitting chip), and a second level conversion module 43. The second photoelectric conversion module 41 is connected to the transmission module 42 through a transmission interface (RX _ O), the second photoelectric conversion module 41 is connected to the second level conversion module 43 through a reception interface (TX _ I), and the second level conversion module 43 is connected to the transmission module 42. The first photoelectric conversion module 32 and the second photoelectric conversion module 41 are connected by an optical fiber, that is, LC interfaces exist in both the first photoelectric conversion module 32 and the second photoelectric conversion module 41, and the two are connected by the LC interfaces.

In the above application scenario, the process of sending the control data to the camera 10 by the acquisition card 20 includes:

referring to fig. 4D, the acquisition card 20 may send a third CXP electrical signal (i.e., an electrical port signal) to the sending module 42 of the second conversion device 40, and the sending module 42 receives the third CXP electrical signal sent by the acquisition card 20 and sends the third CXP electrical signal to the second level conversion module 43.

Referring to fig. 4D, after receiving the third CXP electrical signal, the second level conversion module 43 converts the third CXP electrical signal into a third differential signal, and sends the third differential signal to the second photoelectric conversion module 41.

For example, the second level shift module 43 is a device having a shift function, and can shift the CXP electrical signal into a differential signal, such as an LVDS signal, and the type of the second level shift module 43 is not limited, and the CXP electrical signal can be shifted into the differential signal, so that the second level shift module 43 can shift the third CXP electrical signal into the third differential signal after receiving the third CXP electrical signal.

For example, when the second level conversion module 43 converts the third CXP electrical signal into the third differential signal, the third CXP electrical signal may correspond to a Low Voltage Transistor Logic (LVTTL) level (e.g., a LVTTL of 3.3V or a LVTTL of 2.5V), and the third differential signal corresponds to a CML (Current Mode Logic) level, that is, the second level conversion module 43 converts the third CXP electrical signal of the LVTTL level into the third differential signal of the CML level, and therefore, the second level conversion module 43 may also be called a LVTTL-to-CML differential output unit.

In order to convert the third CXP electric signal of the LVTTL level into the third differential signal of the CML level, the second level conversion module 43 may convert the third CXP electric signal of the LVTTL level into the differential signal of the LVDS level and convert the differential signal of the LVDS level into the third differential signal of the CML level.

Referring to fig. 4D, after receiving the third differential signal, the second photoelectric conversion module 41 converts the third differential signal into a second optical signal and sends the second optical signal to the first photoelectric conversion module 32.

For example, the second photoelectric conversion module 41 is a device capable of converting a differential signal into an optical signal, and the type of the second photoelectric conversion module 41 is not limited, and the differential signal may be converted into the optical signal, so that the second photoelectric conversion module 41 may convert the third differential signal into the second optical signal.

After the second optical signal is obtained by the second photoelectric conversion module 41, based on the optical fiber between the first photoelectric conversion module 32 and the second photoelectric conversion module 41, the second optical signal can be sent to the first photoelectric conversion module 32, the transmission speed of the second optical signal is relatively low, and the second optical signal is a low-speed signal, for example, the frequency of the second optical signal is up to 41.6Mbps, and the frequency of the second optical signal is downward compatible with 20.83Mbps.

Referring to fig. 4D, after receiving the second optical signal, the first photoelectric conversion module 32 converts the second optical signal into a fourth differential signal, and sends the fourth differential signal to the first level conversion module 33.

For example, the first photoelectric conversion module 32 is a device capable of converting an optical signal into a differential signal, and the type of the first photoelectric conversion module 32 is not limited, and the optical signal may be converted into the differential signal, so that the first photoelectric conversion module 32 may convert the second optical signal into the fourth differential signal.

Referring to fig. 4D, after receiving the fourth differential signal, the first level shift module 33 converts the fourth differential signal into a fourth CXP electrical signal, and sends the fourth CXP electrical signal to the receiving module 31.

For example, the first level shift module 33 is a device having a conversion function, and can convert a differential signal into a CXP electrical signal, and the type of the first level shift module 33 is not limited, and the differential signal can be converted into the CXP electrical signal, so that the first level shift module 33 can convert a fourth differential signal (such as an LVDS signal) into the fourth CXP electrical signal after receiving the fourth differential signal.

For example, when the first level conversion module 33 converts the fourth differential signal into the fourth CXP electrical signal, the fourth differential signal may correspond to a CML level, and the fourth CXP electrical signal may correspond to a LVTTL level (e.g., a LVTTL of 3.3V or a LVTTL of 2.5V), that is, the first level conversion module 33 converts the fourth differential signal of the CML level into the fourth CXP electrical signal of the LVTTL level, and therefore, the first level conversion module 33 may also be referred to as a CML differential to LVTTL output unit.

To convert the CML-level fourth differential signal into the LVTTL-level fourth CXP electrical signal, the first level conversion module 33 may convert the CML-level fourth differential signal into an LVDS-level differential signal and convert the LVDS-level differential signal into the LVTTL-level fourth CXP electrical signal.

Referring to fig. 4D, after receiving the fourth CXP electrical signal, the receiving module 31 may transmit the fourth CXP electrical signal to the camera 10, and receive the fourth CXP electrical signal by the camera 10.

Referring to the above embodiment, the first CXP electrical signal is a high speed signal, the second CXP electrical signal is a high speed signal, the first optical signal is a high speed signal, the third CXP electrical signal is a low speed signal, the fourth CXP electrical signal is a low speed signal, and the second optical signal is a low speed signal.

According to the technical scheme provided by the utility model, in the embodiment, can transmit the CXP signal of telecommunication conversion for light signal, and transmit light signal through optic fibre, and need not transmit the CXP signal of telecommunication through coaxial cable. When optical signals are transmitted through the optical fibers, the optical fiber transmission has the advantages of strong anti-interference capability, long transmission distance, high transmission bandwidth, small and light cable, low cost, high cost performance, convenience in use, difficulty in damage and the like, and is very suitable for application scenes with long distance and high bandwidth, such as the transmission requirement of 40KM can be met.

In a possible implementation, referring to fig. 5A, which is a schematic structural diagram of the first conversion device 30, fig. 5A shows a receiving module 31, a first photoelectric conversion module 32, and a first level conversion module 33.

For the receiving module 31, BNC denotes a BNC connector for connecting the camera 10, R261, R260, and R262 denote resistors, C486, and C488 denote capacitors, U84 denotes a diode, U83 denotes a CXP receiving chip, R263, R264, R265, R908, and R909 denote resistors, and C483 and C484 are capacitors.

For the first photoelectric conversion module 32, J5 denotes an SFP (Small form factor Pluggable) optical module, which is an interface device for converting an electrical signal into an optical signal, C533, C501, C502, and C535 denote capacitors, L10 and L11 denote inductors, and C536 and C686 denote capacitors.

For the first level shift module 33, C474 and C475 denote capacitors, R86 denotes a resistor, R77 and R78 denote resistors, C944, C141 and C140 denote capacitors, U74 denotes a differential transceiver (also referred to as an LVDS transceiver) for converting a differential signal, and R83 denotes a resistor.

In one possible implementation, referring to fig. 5B, which is a schematic structural diagram of the second conversion device 40, fig. 5B shows a second photoelectric conversion module 41, a transmission module 42 and a second level conversion module 43.

For the transmission module 42, BNC denotes a BNC connector for connecting the acquisition card 20, R912 denotes a resistor, U80 denotes a diode, C962, C966 and C967 denote capacitors, C968 denotes a capacitor, U79 denotes a CXP transmission chip, C957 denotes a capacitor, and R910 and R911 denote resistors.

For the second photoelectric conversion module 41, J9 represents an SFP optical module, which is an interface device for converting an electrical signal into an optical signal, the optical module J9 has an AC coupling capacitor therein, C959, C960, C963, and C964 represent capacitors, L18 and L19 represent inductors, and C961 and C965 represent capacitors.

For the second level shift module 43, R913, R914, and R920 represent resistors, C969, C970, and C971 represent capacitors, U81 represents a differential transceiver (also referred to as an LVDS transceiver) for converting a differential signal, and R915 and R917 represent resistors.

In the above embodiment, fig. 5A is only an example of the first conversion device 30, and the first conversion device 30 is not limited thereto, and fig. 5B is only an example of the second conversion device 40, and the second conversion device 40 is not limited thereto.

Based on the same conception with the above embodiment, the embodiment of the present invention provides a signal transmission method, which is applied to a data acquisition system, the data acquisition system includes a camera, an acquisition card, a first conversion device connected with the camera, and a second conversion device connected with the acquisition card, the first conversion device and the second conversion device are connected by an optical fiber, as shown in fig. 6, the method is a schematic flow diagram of the signal transmission method, and the method includes:

step 601, the first conversion device receives a first CXP electrical signal sent by a camera, converts the first CXP electrical signal into a first optical signal, and sends the first optical signal to the second conversion device.

Step 602, the second conversion device converts the first optical signal into a second CXP electrical signal, sends the second CXP electrical signal to the acquisition card, and receives the second CXP electrical signal by the acquisition card.

And 603, receiving the third CXP electric signal sent by the acquisition card by the second conversion device, converting the third CXP electric signal into a second optical signal, and sending the second optical signal to the first conversion device.

Step 604, the first conversion device converts the second optical signal into a fourth CXP electrical signal, sends the fourth CXP electrical signal to the camera, and the camera receives the fourth CXP electrical signal.

Wherein a transmission speed of the first CXP electrical signal is greater than a transmission speed of the third CXP electrical signal.

In a possible implementation, the first conversion device may include a receiving module and a first photoelectric conversion module, and the second conversion device may include a second photoelectric conversion module and a transmitting module, and on this basis, for step 601 and step 602, the receiving module may receive the first CXP electrical signal transmitted by the camera, convert the first CXP electrical signal into a first differential signal, and transmit the first differential signal to the first photoelectric conversion module; the first photoelectric conversion module may receive the first differential signal, convert the first differential signal into a first optical signal, and send the first optical signal to the second photoelectric conversion module; the second photoelectric conversion module can receive the first optical signal, convert the first optical signal into a second differential signal, and send the second differential signal to the sending module; the sending module may receive the second differential signal, convert the second differential signal into a second CXP electrical signal, send the second CXP electrical signal to the acquisition card, and receive the second CXP electrical signal by the acquisition card.

In a possible implementation, the first conversion device may include a receiving module, a first level conversion module and a first photoelectric conversion module, and the second conversion device may include a second photoelectric conversion module, a second level conversion module and a transmitting module, on this basis, for step 603 and step 604, the transmitting module may transmit the third CXP electrical signal from the acquisition card to the second level conversion module; the second level conversion module may receive the third CXP electrical signal, convert the third CXP electrical signal into a third differential signal, and send the third differential signal to the second photoelectric conversion module; the second photoelectric conversion module may receive the third differential signal, convert the third differential signal into a second optical signal, and send the second optical signal to the first photoelectric conversion module; the first photoelectric conversion module can receive the second optical signal, convert the second optical signal into a fourth differential signal, and send the fourth differential signal to the first level conversion module; the first level conversion module receives the fourth differential signal, converts the fourth differential signal into a fourth CXP electrical signal, and sends the fourth CXP electrical signal to the receiving module; the receiving module receives the fourth CXP electrical signal and sends the fourth CXP electrical signal to the camera.

For example, when the second level shift module shifts the third CXP electrical signal into a third differential signal, the third CXP electrical signal may correspond to a LVTTL level, and the third differential signal may correspond to a CML level; and when the first level conversion module converts the fourth differential signal into the fourth CXP electrical signal, the fourth differential signal may correspond to a CML level, and the fourth CXP electrical signal may correspond to a LVTTL level.

Illustratively, the second level shift module converts the third CXP electrical signal into a third differential signal, which may include, but is not limited to, the following: converting the third CXP electric signal with LVTTL level into a differential signal with LVDS level; the differential signal of the LVDS level is converted into a third differential signal of the CML level.

For example, the first level shift module shifts the fourth differential signal to the fourth CXP electrical signal, which may include, but is not limited to, the following: converting the fourth differential signal of the CML level into a differential signal of the LVDS level; and converting the differential signal of the LVDS level into a fourth CXP electric signal of the LVTTL level.

In one possible embodiment, one end of the AOC cable is a camera end device with a designated connector, the other end of the AOC cable is an acquisition card end device with a designated connector; the first conversion device may be a camera end device of the AOC cable, the camera may have a designated connector, the designated connector of the camera end device being connected with the designated connector of the camera; the second conversion device may be an acquisition card end device of the AOC cable, and the acquisition card may have a designated connector, the designated connector of the acquisition card end device being connected with the designated connector of the acquisition card. Wherein the designated connector may be a DIN connector; alternatively, the designated connector may be a BNC connector.

In a possible embodiment, the first conversion means is a CXP light conversion box having a DIN connector and/or a BNC connector, the DIN connector of the CXP light conversion box being connected with the DIN connector of the camera if the camera has a DIN connector; or if the camera has a BNC connector, the BNC connector of the CXP pod is connected with the BNC connector of the camera; the second conversion device is an optical-to-CXP box with a DIN connector and/or a BNC connector, and if the acquisition card is provided with the DIN connector, the DIN connector of the optical-to-CXP box is connected with the DIN connector of the acquisition card; alternatively, if the acquisition card has a BNC connector, the BNC connector of the opto-CXP box is connected to the BNC connector of the acquisition card.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An AOC cable, comprising: a appointed connector for being connected with the camera, CXP change light circuit, optic fibre, light change CXP circuit, be used for the appointed connector of being connected with the collection card, CXP change light circuit through optic fibre with light changes CXP circuit connection.

2. The AOC cable of claim 1,

the designated connector is a DIN connector; alternatively, the designated connector is a BNC connector.

3. The AOC cable of claim 1,

the CXP light conversion circuit is used for receiving a first CXP electric signal sent by the camera, converting the first CXP electric signal into a first optical signal and sending the first optical signal to the light conversion CXP circuit;

the optical-to-CXP circuit is used for receiving the first optical signal, converting the first optical signal into a second CXP electrical signal and sending the second CXP electrical signal to the acquisition card;

the optical-to-CXP circuit is used for receiving a third CXP electric signal sent by the acquisition card, converting the third CXP electric signal into a second optical signal and sending the second optical signal to the CXP optical-to-CXP circuit;

the CXP light conversion circuit is used for receiving the second optical signal, converting the second optical signal into a fourth CXP electric signal and sending the fourth CXP electric signal to the camera.

4. The AOC cable of claim 3,

the CXP changes light circuit includes receiving module and first photoelectric conversion module, the light changes CXP circuit and includes second photoelectric conversion module and sending module, wherein:

5. The AOC cable of claim 3, wherein the CXP-to-optical circuit comprises a receive module, a first level-shifting module, and a first optical-to-electrical conversion module, the optical-to-CXP circuit comprises a second optical-to-electrical conversion module, a second level-shifting module, and a transmit module, wherein:

the transmitting module is configured to receive a third CXP electrical signal sent by the acquisition card, and send the third CXP electrical signal to the second level conversion module;

the first level conversion module is configured to receive the fourth differential signal, convert the fourth differential signal into a fourth CXP electrical signal, and send the fourth CXP electrical signal to a reception module;

the receiving module is configured to receive the fourth CXP electrical signal and send the fourth CXP electrical signal to the camera.

6. A CXP light box, comprising: the optical fiber connector comprises a designated connector, a CXP light conversion circuit and an optical fiber connection interface, wherein the designated connector is used for being connected with a camera; wherein:

7. The CXP light box of claim 6, wherein the designated connectors comprise DIN connectors and/or BNC connectors; if the camera has a DIN connector, connecting the DIN connector of the CXP light conversion box with the DIN connector of the camera; if the camera has a BNC connector, the BNC connector of the CXP light box is connected with the BNC connector of the camera.

8. The CXP light conversion box of claim 6, wherein the CXP light conversion circuit comprises a receiving module, a level conversion module and a photoelectric conversion module, wherein:

the receiving module is used for receiving the CXP electric signal sent by the camera, converting the CXP electric signal into a differential signal and sending the differential signal to the photoelectric conversion module;

and/or the presence of a gas in the gas,

the photoelectric conversion module is used for receiving an optical signal through the optical fiber connection interface, converting the optical signal into a differential signal, and sending the differential signal to the level conversion module;

9. An optical-to-CXP cassette, comprising: the optical fiber connector comprises a designated connector used for being connected with a collecting card, an optical fiber-to-CXP circuit and an optical fiber connection interface; wherein:

10. The optical-to-CXP cassette of claim 9, wherein the designated connector comprises a DIN connector and/or a BNC connector; if the acquisition card is provided with a DIN connector, connecting the DIN connector of the optical-to-CXP box with the DIN connector of the acquisition card; if the acquisition card has a BNC connector, the BNC connector of the optical-to-CXP box is connected with the BNC connector of the acquisition card.

11. The light-turning CXP box of claim 9,

the optical-to-CXP circuit comprises a photoelectric conversion module, a level conversion module and a sending module, wherein:

the photoelectric conversion module is used for receiving an optical signal through the optical fiber connection interface, converting the optical signal into a differential signal, and sending the differential signal to the sending module;

and/or the presence of a gas in the gas,

the transmitting module is used for receiving the CXP electric signals transmitted by the acquisition card and transmitting the CXP electric signals to the level conversion module;

the level conversion module is used for receiving the CXP electrical signal, converting the CXP electrical signal into a differential signal and sending the differential signal to the photoelectric conversion module;