CN209748717U

CN209748717U - 4k ultra-high definition video optical transmitter and receiver

Info

Publication number: CN209748717U
Application number: CN201920982953.0U
Authority: CN
Inventors: 李心见; 陈丽彦
Original assignee: DOTECK DIGITAL TECHNOLOGIES
Current assignee: DOTECK DIGITAL TECHNOLOGIES
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2019-12-06
Anticipated expiration: 2029-06-27

Abstract

The utility model belongs to the technical field of the audio frequency transmission technique and specifically relates to a clear video optical transmitter and receiver of 4k superelevation is related to, include: a sending end and a receiving end; the transmitting end includes: the optical module comprises a first chip, an optical emitting module and a second chip; the first chip is used for carrying out cable equalization processing on an SDI signal input by a single cable and driving and outputting two paths of signals, wherein one path of signal is input to the second chip, the other path of signal is input to the light emitting module, the light emitting module is an SFP interface, and single fibers are adopted for transmitting signals; the receiving end includes: a light receiving module and a third chip; the optical receiving module is used for converting received optical signals into electric signals and outputting the electric signals to the third chip, and the optical receiving module is an SFP interface and adopts single fibers to transmit signals. The utility model discloses simple structure, the clear signal of remote transmission 4k superelevation is realized to single cable single fiber module. The reduced cables increase system stability and allow for easier system maintenance.

Description

4k ultra-high definition video optical transmitter and receiver

Technical Field

The utility model belongs to the technical field of the audio frequency transmission technique and specifically relates to a clear video optical transmitter and receiver of 4k superelevation is related to.

Background

Video optical transceivers are generally divided into two types, namely, analog video optical transceivers and digital video optical transceivers, and digital video optical transceivers are increasingly commonly used today in digitalization. The optical transceivers are all paired, one receiving and one transmitting, the transmitting end is responsible for converting the electrical signal into the optical signal, so that the transmission is farther, and the receiving end is responsible for converting the received optical signal into the electrical signal, recovering the signal of the transmitting end and completing the transmission. The system is divided into a standard definition optical transceiver, a high definition optical transceiver, a full high definition optical transceiver and a 4k ultra high definition optical transceiver according to the video rate of transmission, wherein the 4k ultra high definition optical transceiver can be divided into a 6G ultra high definition optical transceiver and a 12G ultra high definition optical transceiver. Correspondingly, the standard definition optical transceiver can only transmit the video with the resolution of 720 × 576 or 720 × 480, and the transmission rate is 270 Mbit/s; the high-definition optical transceiver can only transmit resolution below 1920 x 1080P/30Hz, and the transmission rate is 1.485Gbit/s at most; the full high-definition video optical transceiver supports the resolution below 1920 x 1080P/60Hz, and the transmission rate is 2.97Gbit/s at most; the 6G ultra-high-definition optical transceiver supports the resolution of 3840 × 2160P/30Hz or 4096 × 2160P/30Hz or less, and the transmission rate is up to 5.94 Gbit/s; the 12G ultra-high-definition optical transceiver supports the resolution of 3840 × 2160P/60Hz or 4096 × 2160P/60Hz or less, and the transmission rate is up to 11.88 Gbit/s. The 12G ultra-high-definition optical transceiver is a 4k ultra-high-definition optical transceiver, and in a few schemes capable of realizing 4k ultra-high definition, 12G is often synthesized by two 6G videos or 4 3G videos, optical fibers for transmission are correspondingly 2 or 4 optical fibers, and video cables are more than 2, so that the occupied area is very inconvenient. Furthermore, because of the ultra-high speed, the processing requirements for signals are very strict, and it is important to solve the input impedance matching problem, especially for the BNC interface of signal input, in the current application, the BNC interface with large package is mostly used, but for the high speed signal, especially in the strict application, the BNC with more precise impedance is required, so that the BNC with small package is very advantageous. When high-speed data is transmitted, more or less chips generate heat, if the heat dissipation is not good, the chips are unstable, and the traditional method generally only adds a heat dissipation plate, but also has a low heat dissipation speed.

In summary, the disadvantages of the prior art are as follows:

1) More than 2 optical fibers are used for transmission, and resources and space are occupied.

2) more than 2 video cables occupy space, and the system is unstable easily caused by more cables.

3) And poor compatibility to BNC heads.

4) The heat dissipation is not good enough, and the system is easy to be unstable.

the information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clear video optical transmitter and receiver of 4k superelevation to solve the technical problem who exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a clear video optical transmitter and receiver of 4k superelevation, it includes: a sending end and a receiving end; the transmitting end comprises: the optical module comprises a first chip, an optical emitting module and a second chip; the first chip is respectively connected with the optical transmitting module and the second chip, the first chip is used for carrying out cable equalization processing on an SDI signal input by a single cable and driving and outputting two paths of signals, one path of signal is input to the second chip, the other path of signal is input to the optical transmitting module, the optical transmitting module is used for converting a received electric signal into an optical signal, the optical transmitting module is an SFP interface and adopts a single fiber to transmit signals; the receiving end includes: a light receiving module and a third chip; the optical receiving module is connected with the optical receiving module, the third chip is connected with the optical receiving module, the optical receiving module is used for converting received optical signals into electric signals and outputting the electric signals to the third chip, the optical receiving module is an SFP interface and adopts single-fiber transmission signals, and the third chip is used for carrying out cable equalization processing on the received signals and driving and outputting two SDI signals.

As a further technical scheme, the model of the first chip is GS12141 chip.

As a further technical solution, the second chip and the third chip are GS12181 chips, respectively.

As a further technical scheme, each chip is superposed with a first radiating fin and a second radiating fin through heat-conducting silica gel.

As a further technical solution, the second heat sink abuts against an upper portion of the chassis.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

1) The utility model discloses simple structure, the clear signal of remote transmission 4k superelevation is realized to single cable single fiber module.

2) the utility model discloses because the cable reduces the reason to increased system stability, also let the system maintain more easily.

3) The utility model discloses compatible two kinds of BNC encapsulation commonly used improves the flexibility of product.

4) The utility model discloses improve cooling system for the conduction that the heat can be better is gone out.

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a 4k ultra-high definition video optical transceiver according to an embodiment of the present invention;

Fig. 2 is a schematic signal processing diagram of a 4k ultra-high definition video optical transceiver according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a 4k ultra-high definition video optical transceiver according to an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a BNC connector according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

in the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

referring to fig. 1, the present embodiment provides a 4k ultra high definition video optical transceiver, which includes: a sending end and a receiving end; the transmitting end comprises: the optical module comprises a first chip, an optical emitting module and a second chip; the first chip is respectively connected with the optical transmitting module and the second chip, the first chip is used for carrying out cable equalization processing on an SDI signal input by a single cable and driving and outputting two paths of signals, one path of signal is input to the second chip, the other path of signal is input to the optical transmitting module, the optical transmitting module is used for converting a received electric signal into an optical signal, the optical transmitting module is an SFP interface, and a single-fiber transmission signal is adopted (the optical transmitting module carries out electro-optical conversion on a differential high-speed signal to enable the signal transmission to be farther, and the optical module is an SFP interface and is used for single-fiber transmission); the receiving end includes: a light receiving module and a third chip; the optical transceiver module comprises an optical receiving module, a third chip, a light receiving module, a single-fiber transmission signal (which is responsible for converting received optical signals into electrical signals so as to facilitate rear-end chip processing, and an SFP interface, wherein the optical receiving module is used for converting the received optical signals into the electrical signals and outputting the electrical signals to the third chip, the third chip is connected with the optical receiving module, is used for converting the received optical signals into the electrical signals and outputting the electrical signals to the third chip, and is used for performing cable equalization processing on the received signals and driving and outputting two SDI signals.

In this embodiment, as a further technical solution, the model of the first chip is a GS12141 chip, and the chip has a cable equalization function, and first compensates for attenuation of a signal, and then the chip has a driving function to amplify and enhance the signal.

In this embodiment, as a further technical solution, the second chip and the third chip are respectively a GS12181 chip. Wherein, the second chip also has the functions of equalization and driving, and is used as a driving signal loop output.

As a further technical scheme, each chip is superposed with a first radiating fin and a second radiating fin through heat-conducting silica gel. Preferably, the second heat dissipation fins abut against the upper portion of the casing to increase the heat dissipation area, so that heat can be dissipated through the upper casing, and the heat dissipation is fast and obvious.

The working principle of the 4k ultra-high definition video optical transceiver provided by this embodiment is as follows:

As shown in fig. 1, at a transmitting end, a standard SDI signal in a single cable is input into a GS12141 chip, the chip performs cable equalization processing on the signal first, performs level compensation on the signal, reduces a level difference between high and low frequency signals, because when the electrical signal is transmitted in the cable, the cable attenuates low frequency signals and high frequency signals, which causes the level difference to increase and affects the quality of the signal, the low frequency signal needs to be suppressed down, the level difference is reduced, then CDR, i.e. clock recovery, is performed on the signal, and when the signal is output, the signal is driven and output, and two signals are output at the same time, one signal is input into a GS12181 chip, which mainly re-equalizes and drives the signal again, because the high speed signal is transmitted and the serial rate reaches 11.88Gbit/s, so that it is necessary to loop a stable SDI signal; the other path of signal from the GS12141 enters an optical module for electrical-optical conversion, and the optical module uses a module capable of transmitting 12G video, an SFP interface, and a single-fiber transmission signal. After optical fiber transmission, an optical signal enters an optical receiving module for photoelectric conversion, the optical signal is converted into an electric signal and enters a GS12181 chip, the chip firstly performs cable equalization on the signal, and then the signal rate is monitored. As shown in fig. 2, first, the RATE _ DETECT _ MODE register of the chip is read, CDRs (clock recovery) of different RATEs are selected according to the CFG _ MANUAL _ RATE value returned in the register, and a corresponding number is written into the register CTRL _ OUTPUT0_ MANUAL _ RATE _ MODE according to the different values, so that the correct resolution is OUTPUT. When the CFG _ MANUAL _ RATE returned is 2, the CDR selects to perform clock recovery on the signal at a RATE of 270Mbit/s, then writes 0 into the register CTRL _ OUTPUT0_ MANUAL _ RATE _ MODE, and then OUTPUTs a standard definition SDI signal; when the returned CFG _ MANUAL _ RATE is 3, 4 or 5, the CDR selects to perform clock recovery on the signal at the RATE of 1.485Gbit/s or 2.97Gbit/s, then writes 1 into the register CTRL _ OUTPUT0_ MANUAL _ RATE _ MODE, and then OUTPUTs a high-definition SDI signal or a full-high-definition SDI signal; when the CFG _ MANUAL _ RATE returned is 6, the CDR selects to perform clock recovery on the signal at the RATE of 11.88Gbit/s, and then writes 2 into the register CTRL _ OUTPUT0_ MANUAL _ RATE _ MODE, and then OUTPUTs a 4k ultra high definition SDI signal.

In addition, as shown in fig. 4, the BNC connector 4 is used for signal input in the 4k ultra-high-definition video optical transceiver of this embodiment, and for the needs of different application occasions, in the case that the video input rate is less than 12Gbit/s in the common application occasion, the BNC connector with the common large package is used, so that the cost is saved, and the BNC connector is consistent with the connection line of the surrounding environment and the equipment. If the video rate of 12Gbit/s is transmitted on a precise occasion, a small-packaged BNC connector is required to be adopted, the BNC rate can reach 12Gbit/s, each index is better than that of a common large-packaged BNC connector, and therefore the package of the BNC connector is changed, and the BNC connector can be compatible with two types of BNC connectors.

In order to increase the stability of the system, the heat dissipation is specially processed, as shown in fig. 3, two heat dissipation fins (a first heat dissipation fin 1 and a second heat dissipation fin 2) are stacked on the chip 3 through heat-conducting silica gel, so that the second heat dissipation fin just props against the upper shell, the heat dissipation area is increased, the heat can be dissipated through the upper shell, and the heat dissipation is fast and obvious in effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A 4k ultra high definition video optical transceiver, comprising: a sending end and a receiving end;

the transmitting end comprises: the optical module comprises a first chip, an optical emitting module and a second chip; the first chip is respectively connected with the optical transmitting module and the second chip, the first chip is used for carrying out cable equalization processing on an SDI signal input by a single cable and driving and outputting two paths of signals, one path of signal is input to the second chip, the other path of signal is input to the optical transmitting module, the optical transmitting module is used for converting a received electric signal into an optical signal, the optical transmitting module is an SFP interface and adopts a single fiber to transmit signals;

The receiving end includes: a light receiving module and a third chip; the optical receiving module is connected with the optical receiving module, the third chip is connected with the optical receiving module, the optical receiving module is used for converting received optical signals into electric signals and outputting the electric signals to the third chip, the optical receiving module is an SFP interface and adopts single-fiber transmission signals, and the third chip is used for carrying out cable equalization processing on the received signals and driving and outputting two SDI signals.

2. The 4k ultra high definition video optical transceiver of claim 1, wherein the first chip has a model number of GS 12141.

3. The 4k ultra high definition video optical transceiver of claim 1, wherein the second chip and the third chip are GS12181 chips, respectively.

4. The 4k ultra-high-definition video optical transceiver of claim 1, wherein each chip is superimposed with a first heat sink and a second heat sink by a thermally conductive silicone.

5. The 4k ultra high definition video optical transceiver of claim 4, wherein the second heat sink abuts against an upper portion of the cabinet.