CN208754432U - A kind of receiving converter for 3G-SDI and fiber-optic signal - Google Patents
A kind of receiving converter for 3G-SDI and fiber-optic signal Download PDFInfo
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- CN208754432U CN208754432U CN201821398955.7U CN201821398955U CN208754432U CN 208754432 U CN208754432 U CN 208754432U CN 201821398955 U CN201821398955 U CN 201821398955U CN 208754432 U CN208754432 U CN 208754432U
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- receiving converter
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Abstract
The utility model relates to a kind of receiving converters for 3G-SDI and fiber-optic signal, including 3G-SDI signal receiver, HDMI signal receiver, 3G-SDI signal cable driver and MCU master controller；HDMI signal receiver and 3G-SDI signal cable driver are connected with 3G-SDI signal receiver respectively, and MCU master controller is connected with 3G-SDI signal receiver, HDMI signal receiver and 3G-SDI signal cable driver respectively；Receiving converter further includes SFP fiber optic receiver, and SFP fiber optic receiver is connected with 3G-SDI signal receiver.The receiving converter strong real-time for 3G-SDI and fiber-optic signal of the utility model, vision signal are non-delay；Clarity is high, is capable of providing no compression high definition image, image is undistorted；Highly-safe, video is transmitted without IP network, so that video data safety is higher.
Description
Technical field
The utility model relates to technical field of electronic devices, believe more specifically to one kind for 3G-SDI and optical fiber
Number receiving converter.
Background technique
Along with the development of multimedia display and transmission technology, people obtain higher and higher seeing and hearing enjoyment.From tradition
Mark definition video to high definition, full HD, with display technology development go in group be display interface technology development, from simulation
AV, CVBS, USB interface to number SDI, HDMI interface, technically also experienced one from analog to digital, from low speed to high speed
Development process.Wherein SDI interface is one of most widely used interface of current radio, TV and film industries, but high-definition interface converts popularization degree
Shang Bugao, SDI interface can simultaneous transmission audios with its small and exquisite shape, the transmission rate of high speed and on a transmission yarn
With the advantage of vision signal and by pursuing.Same HDMI high-definition interface is as can be also extensive with the interface of simultaneous transmission audio-video
It uses.But the same disadvantage that SDI interface and HDMI face is exactly that transmission range is limited；Another problem is that the conversion of each interface makes
It is still difficult preferable compatible to obtain many video equipment.
Common video reception and sending device interface redundancy degree are insufficient in the prior art, and transmission of video clarity is still
Not high, such as most of equipment can only transmit SD-SDI, HD-SDI signal, not have transmission 3G-SDI signal capabilities still；It is existing
About ten meters of HDMI signal transmission distance or so, requirement, such as track transportation industry is much not achieved in certain specific occasions；
Existing video signal conversion receiver board input and output video signals format is single, diversification is insufficient, flexibility is inadequate；Relative to
For the high definitions such as SDI without compression high definition image transmitting, the real-time that IP network transmits video is not good enough, and image is easily distorted, clarity not
It is enough；And the compression package process of IP transmission, so that video data safety is impaired, operability difficulty is big.
Utility model content
The purpose of this utility model is to provide a kind of receiving converter for 3G-SDI and fiber-optic signal, solve existing
Have in technology and not to have transmission 3G-SDI signal capabilities and the limited problem of SDI and HDMI transmission range still.
The utility model technical scheme applied to solve the technical problem is: a kind of connecing for 3G-SDI and fiber-optic signal
Receive converter, comprising: for receiving 3G-SDI signal and 3G-SDI signal being converted to yuv video signal and IIS audio signal
And to 3G-SDI signal carry out relaying reinforce the 3G-SDI signal receiver of processing, for by received yuv video signal and
IIS audio signal is handled to be converted into the HDMI signal receiver of HDMI signal, for that will relay the 3G-SDI reinforced letter
It the 3G-SDI signal cable driver of number driving output multi-channel 3G-SDI signal and is received for controlling the 3G-SDI signal
The MCU master controller of device, HDMI signal receiver and 3G-SDI signal cable driver；The HDMI signal receiver and described
3G-SDI signal cable driver is connected with the 3G-SDI signal receiver respectively, the MCU master controller respectively with institute
State 3G-SDI signal receiver, HDMI signal receiver is connected with 3G-SDI signal cable driver；The receiving converter
Further include for reception optical fiber signal and be converted into electric signal be sent to the 3G-SDI signal receiver SFP optical fiber receive
Device, the SFP fiber optic receiver are connected with the 3G-SDI signal receiver.
In the receiving converter of the utility model, the receiving converter further includes the SDI for preventing electrostatic interference
Signal protection circuit, the sdi signal protection circuit are connected with the 3G-SDI signal receiver.
In the receiving converter of the utility model, the receiving converter further includes Power Management Unit, the power supply
Administrative unit respectively with the 3G-SDI signal receiver, HDMI signal receiver, 3G-SDI signal cable driver, MCU master
Controller is connected with SFP fiber optic receiver.
In the receiving converter of the utility model, the 3G-SDI signal receiver selects GV7704 chip.
In the receiving converter of the utility model, the HDMI signal receiver selects ADV7611 chip.
In the receiving converter of the utility model, the 3G-SDI signal cable driver selects GS2989 chip.
In the receiving converter of the utility model, the MCU master controller selects STC90C51 single-chip microcontroller.
In the receiving converter of the utility model, the SFP fiber optic receiver selects SMC-R-297SDI-L2x to receive
Module.
In the receiving converter of the utility model, the Power Management Unit selects AMS1117 voltage stabilizing chip.
The receiving converter for 3G-SDI and fiber-optic signal for implementing the utility model has the advantages that this
Utility model can receive high definition 3G-SDI signal for the receiving converter of 3G-SDI and fiber-optic signal, and be converted into high definition
HDMI digital signal；It can receive high definition 3G-SDI signal, and extend multichannel 3G-SDI signal；Compatible design can be used and receive light letter
Number and be converted into electric signal, and then be converted into the HDMI signal of standard；Strong real-time, vision signal are non-delay；Clarity is high, energy
Enough to provide without compression high definition image, image is undistorted；Highly-safe, video is transmitted without IP network, so that video data is safe
Property is higher.
Detailed description of the invention
Fig. 1 is the structural block diagram for 3G-SDI and the receiving converter of fiber-optic signal of the utility model；
Fig. 2 is being converted to for 3G-SDI signal in the receiving converter of 3G-SDI and fiber-optic signal for the utility model
The block diagram of HDMI signal；
Fig. 3 is that fiber-optic signal is converted to telecommunications in the receiving converter for being used for 3G-SDI and fiber-optic signal of the utility model
Number block diagram.
Specific embodiment
With reference to the accompanying drawings and examples, to the receiving converter for being used for 3G-SDI and fiber-optic signal of the utility model
Structurally and functionally principle is described further:
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The instruction such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise "
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore should not be understood as limiting the present invention.
With the continuous development of vision signal, vision signal has welcome the digital signal epoch via analog signal, because of mould
The low definition and short-distance transmission of quasi- signal, existing use scope are also more and more limited.The occasion of video playing is more and more at present
Extensively, small to come into being to family greatly to public place, such as subway platform, subway, vehicle, building mansion, school, square
Be the use of each vision signal conversion and receiver, and make without compression high definition transmission of video and overlength distance video transmission technologies
With even more important, the utility model can effectively solve the above technical problem, realize uncompressed video transmission and conversion, and realize
The overlength distance of high-definition video signal transmits, and fiber-optic signal is converted into electric signal to playback terminal by optical fiber transmission technique,
The transmission of 20KM distance can be achieved.Specific advantage is strong real-time, and vision signal is non-delay；Clarity is high, is capable of providing no pressure
Contracting high-definition image, image are undistorted；Highly-safe, video is transmitted without IP network, so that video data safety is higher；It can grasp
The property made is strong, and installation and debugging operation and traditional analog monitoring system are essentially the same, without re-starting training.
As shown in Figure 1-3, the preferred embodiment of the utility model provides a kind of connecing for 3G-SDI and fiber-optic signal
Receive converter comprising: 3G-SDI signal receiver 1, HDMI signal receiver 2,3G-SDI signal cable driver 3, MCU master
Controller 4, SFP fiber optic receiver 5, Power Management Unit 6 and sdi signal protect circuit 7.
Wherein, HDMI signal receiver 2 and 3G-SDI signal cable driver 3 respectively with 1 phase of 3G-SDI signal receiver
Connection, MCU master controller 4 drive with 3G-SDI signal receiver 1, HDMI signal receiver 2 and 3G-SDI signal cable respectively
Device 3 is connected, and SFP fiber optic receiver 5 is connected with 3G-SDI signal receiver 1, and Power Management Unit 6 is believed with 3G-SDI respectively
Number receiver 1, HDMI signal receiver 2,3G-SDI signal cable driver 3, MCU master controller 4 and SFP fiber optic receiver 5
It is connected, sdi signal protection circuit 7 is connected with 3G-SDI signal receiver 1.
It should be noted that 3G-SDI signal receiver 1, HDMI signal receiver 2,3G-SDI signal cable driver 3,
MCU master controller 4, SFP fiber optic receiver 5, Power Management Unit 6 and sdi signal protection circuit 7 etc. are to deposit in the prior art
Hardware, be not rely on the improvement to algorithm, algorithm is the algorithm being disclosed.
1 major function of 3G-SDI signal receiver is to receive 3G-SDI signal, and 3G-SDI signal is converted to yuv video
Signal and IIS audio signal, while relaying reinforcement processing is carried out to 3G-SDI signal.3G-SDI signal receiver 1 is selected
GENNUM company 3G-SDI signal receives special chip GV7704, and GV7704 is a support SD, the serial digital view of high definition
Frequency transmitter embeds cable driver, can transmit the digital signal of 270MB/s, 1.485Gb/S and 3Gb/S, for line by line and interlacing
Digital video provides complete transmission plan, the video input of BT.656, BT.1120 standard is supported, when with CEA-861 standard
Sequence is compatible, and GV7704 is high definition component video four-way serial digital video receiver, integrated high performance cable balanced device skill
Art.The GV77704 chip functions are very powerful, support considerable format, including Full HD:1080p50/59.94/60fps,
The high definitions video format such as HD:1080p25/29.97/30fps, HD:720p25/29.97/30/50/59.94/60fps.GV7704
Integrated high definition virtually lossless codec technology can effectively reduce loss requirement of the sdi signal to transmission coaxial-cable, to letter
Number transmission has larger benefit.It should be noted that 3G-SDI signal receiver 1 also can receive the signals such as SD-SDI, HD-SDI.
2 major function of HDMI signal receiver is handled received yuv video signal and IIS audio signal to turn
The TMDS differential signal of standard, i.e. HDMI signal are changed into, because HDMI signal is embedded in video, audio signal simultaneously, so transmission can
It leans on.The signal that HDMI signal receiver 2 exports is the HDMI signal of standard.HDMI signal receiver 2 selects the dedicated HDMI letter of ADI
Number receiver ADV7611, ADV7611 support high-definition media interface (HDMI) 1.4a function, support all mandatory and additional
3D video format, extension coloration includes sYCC601, Adobe RGB, and TMDS clock frequency reaches 165MHz, has 24 outputs
Pixel bus supports SPDIF (compatible to IEC 60958) digital audio, supports HDMI audio extraction, it is possible to provide two interrupt outputs
Interrupt control unit, support high-bandwidth digital content protection (HDCP) -1.4.ADV7611 is a high quality, single input HDMI
Receiver, built-in HDMI compatible type receiver support all mandatory 3D TV formats as defined in HDMI 1.4a, it integrated one
A CEC controller, tenability discovery and control (CDC) characteristic.ADV7611 has an audio output port, for exporting
The audio data extracted from HDMI stream.HDMI receiver has advanced mute control, can eliminate the external sound in audio output
Frequency noise, accessible following audio format: audio stream (two voice-grade channels) from I2S serializer is gone here and there from S/PDIF
Audio stream (two uncompressed channels or N number of pressure channel, such as AC3), the DST audio stream of row device.The HDMI receiver also collects
Signal transmission distance can be extended for ensuring that there is robustness with the interface of long cable at a balanced device.Built in ADV7611
One principal component processor (CP), for handling the vision signal from HDMI receiver, the function that it is provided includes: comparison
Degree, brightness and saturation degree adjustment, STDI detection module, free-running operation and synchronous alignment control etc..ADV7611 is using advanced
CMOS technology manufacture, provides 64 pins, 10mm × 10mm LQFP_EP surface mount packages, meets RoHS standard；Rated temperature range
It is -40 DEG C to+85 DEG C.
3 major function of 3G-SDI signal cable driver is to receive both-end difference sdi signal, also can receive single-ended SDI letter
Number, received sdi signal is subjected to relaying reinforcement and driving may be output as two-pass DINSAR sdi signal or the single-ended SDI in four tunnels believes
Number, have the function that sdi signal all the way extends four road sdi signals.3G-SDI signal cable driver 3 selects GENNUM dedicated
SDI cable drive GS2989, the GS2989 are broadcasting and TV grade sdi signal processing chips, and performance high reliability is strong.GS2989 is compatible
SMPTE424M, SMPTE 292M and SMPTE 259M video format, message transmission rate is from 270Mb/s to 2.97Gb/s.Transmission
Line has single-ended 75 ohm, and 100 Ohm characteristic of difference supports the input of two-way SDI differential signal, and two-way SDI differential signal exports,
It is extended to the output of four road 3G-SDI signals, the chip price is cheap, and performance is stablized, and has high cost performance.
4 major function of MCU master controller is to be controlled by iic bus agreement HDMI signal receiver 2ADV7611
Make it that received yuv video signal and IIS audio signal are converted to HDMI signal and GSPI and level control to 3G-SDI
Signal receiver 1GV7704, which carries out control, makes it that received 3G-SDI signal is converted into yuv format video and IIS audio letter
Number.MCU master controller 4 selects STC90C51, and highly reliable STC90C516RD+ series monolithic is new one that macrocrystalline science and technology is released
For ultrahigh speed, the single-chip microcontroller of low-power consumption, completely compatible traditional 8051 single-chip microcontroller of instruction code, 12 clocks/machine cycle and when 6
Clock/machine cycle can arbitrarily select, and be internally integrated MAX810 Special reset circuit, clock frequency is in 12MHz or less, resetting pin
Can be directly grounded it is superpower anti-interference, superpower antistatic, anti-interference ability than 89 series it is stronger, reset effect more preferably directly replace 89
Series, software and hardware is without change.Operating voltage: 5.5V-3.8V (5V single-chip microcontroller)/3.8V-2.4V (3V single-chip microcontroller)；Working frequency
Range: 0-40MHz is equivalent to common 8,051 0~80MHz；User application space 4K/6K/7K/8K/10K/12K/
13K/16K/32K/40K/48K/56K/61K/ byte；On piece integrates 1280 bytes/512/256 byte RAM；Universaling I/O port
(35/39), after reset are as follows: P1/P2/P3/P4 is quasi-bidirectional interface/weak pull-up (common 8051 I/O mouthfuls of tradition)；P0 mouthfuls are open-drains
Output as the bus extension used time does not have to that pull-up resistor need to be added as I/O mouthfuls of used times plus pull-up resistor；ISP (system can
Programming)/IAP (programmable in application), it is not necessarily to Special programming/emulator；Use can be directly downloaded by serial ports (P3.0/P3.1)
Family program can be completed a piece of for 8K program 3-5 seconds；Has EEPROM function；Built-in house dog；Totally 3 16 bit timing devices/countings
Device, wherein timer 0 can also be used as 28 bit timing devices；In 4 tunnel of external interrupt, failing edge interruption or low level triggering
Disconnected, Power Down mode can trigger interrupt mode by external interrupt low level and wake up；Generic asynchronous serial mouth (UART), in view of
The powerful function of STC90C516RD+ single-chip microcontroller is just suitble to the MCU master control of the receiving converter of 3G-SDI and fiber-optic signal.
5 major function of SFP fiber optic receiver is that received optical signal is converted into electric signal, and electric signal is through 3G-SDI signal
Receiver 1GV7704 receives the yuv format vision signal and IIS audio signal for the standard that is converted to.SFP fiber optic receiver 5 is selected
Kechuang optical receiver module SMC-R-297SDI-L2x, SMC-R-297SDI-L2x support SD-SDI, HD-SDI and 3G-SDI view
Frequency format, compatible SFP MSA and SFF-8472, the SFP fiber optic receiver 5 can branch rate 50Mbps to 2.97Gbps, sampling frequency
Rate SMPTE259M, SMPTE 344M, SMPTE 292M and SMPTE 424M, completely compatible SMPTE 297M-2006 are used
SMC-R-297SDI-L2x peripheral circuit is simple, at low cost.
It is 3G-SDI signal receiver 1 that 6 major function of Power Management Unit, which is by the chip of different voltages output level,
HDMI signal receiver 2,3G-SDI signal cable driver 3, MCU master controller 4, SFP fiber optic receiver 5 provide DC1.2V,
DC1.8V, DC3.3V voltage work normally each chip circuit.The selection of Power Management Unit 6 LDO AMS1117, AMS1117 are
The linear voltage regulator circuit of low pressure drop three of a positive voltage output, exporting the pressure drop under electric current in 1A is 1.2V, is divided into two
Version, fixed voltage exports version and adjustable voltage exports version.Fixed output voltage 1.5V, 1.8V, 2.5V, 3.3V, 5.0V
Voltage accuracy with tunable versions is 1%；The output of products voltage accuracy that fixed voltage is 1.2V be 2% be internally integrated overheat protect
Shield and current-limiting circuit are suitable for each electronic product.The receiving converter of 3G-SDI and fiber-optic signal of the invention uses
The chips such as GV7704 and ADV7611, GS2989, it is higher to power requirement such as ripple etc., and LDO can meet this requirement, therefore select
Use AMS1117.
It is to prevent electrostatic interference that sdi signal, which protects 7 major function of circuit, and RTC and air discharge tube major function are lightning protection
Surge is hit to circuit and signaling interface damage etc..Sdi signal protects circuit 7 to use the protectors such as TVS, RTC, air discharge tube
Part, wherein TVS selects the dedicated SDI electrostatic protection device rclamp0531t of GENNUM, rclamp0531t to support IEC 61000-
4-2 (ESD) ± 20kV (air), ± 12kV (contact), IEC 61000-4-4 (EFT) 40A (tp=5/50ns), have
The low capacitive reactance of 0.8pF is suitble to the protection of SDI interface electrostatic.
The 3G-SDI of the utility model and compatible reception 3G-SDI, HD-SDI, the SD- of the receiving converter of fiber-optic signal
Sdi signal simultaneously is allowed to be converted to HDMI signal, and is extended to four road 3G-SDI, HD-SDI, SD-SDI signals, mainly passes through 3G-
Sdi signal receiver 1, HDMI signal receiver 2,3G-SDI signal cable driver 3 and MCU master controller 4, SFP optical fiber connect
Device 5 etc. is received to realize.Wherein, the single-chip microcontroller of MCU master controller 4 is using IIC and GSPI communication interface to 3G-SDI signal receiver
1, HDMI signal receiver 2,3G-SDI signal cable driver 3 etc. are controlled, and wherein HDMI signal receiver 2 uses standard
IIC Interface Controller, this interface can pass through the hardware SMbuS function realization that single-chip microcontroller carries, the core of 3G-SDI signal receiver 1
Piece GV7704 communication interface uses 4 bit-serial communication interface GSPI and level control interface, GSPI need SCM program
Simulated implementation is carried out by GPIO, level control is also directly to realize using the GPI0 of single-chip microcontroller.In addition, 3G-SDI and optical fiber
The receiving converter of signal can also be converted into the HDMI signal of standard, HDMI signal by compatible design reception optical fiber signal
The playback terminals such as LCD display can be connected to, specific implementation process is that fiber-optic signal is converted into after the reception of SFP fiber optic receiver 5
SDI differential signal, SDI differential signal are converted into 10 yuv format videos and IIS sound by the reception of 3G-SDI signal receiver 1
Frequency signal, yuv format video and IIS audio signal handle the HDMI signal for the standard that is converted into, HDMI through HDMI signal receiver 2
Signal can be connected to rear class and show equipment, and the overlength distance of high definition uncompressed video signal is on the one hand realized using the conversion of this signal
Transmission, on the other hand realizes the reception and broadcasting of high-definition video signal, substantially increases visual effect.
It should be understood that it will be understood by those skilled in the art that it can be modified or changed according to the above description, but this
It is a little to improve or convert within the protection scope that all should belong to the appended claims for the utility model.
Claims (9)
1. a kind of receiving converter for 3G-SDI and fiber-optic signal characterized by comprising for receiving 3G-SDI signal
And 3G-SDI signal is converted into yuv video signal and IIS audio signal and relaying reinforcement processing is carried out to 3G-SDI signal
3G-SDI signal receiver (1), for handling received yuv video signal and IIS audio signal to be converted into
The HDMI signal receiver (2) of HDMI signal drives output multi-channel 3G-SDI signal for that will relay the 3G-SDI signal reinforced
3G-SDI signal cable driver (3) and for controlling the 3G-SDI signal receiver (1), HDMI signal receiver
(2) and the MCU master controller (4) of 3G-SDI signal cable driver (3)；The HDMI signal receiver (2) and the 3G-
Sdi signal cable drive (3) is connected with the 3G-SDI signal receiver (1) respectively, the MCU master controller (4) point
It is not connected with the 3G-SDI signal receiver (1), HDMI signal receiver (2) and 3G-SDI signal cable driver (3)；
The receiving converter further includes for reception optical fiber signal and being converted into electric signal and being sent to the 3G-SDI signal connecing
The SFP fiber optic receiver (5) of device (1) is received, the SFP fiber optic receiver (5) is connected with the 3G-SDI signal receiver (1)
It connects.
2. receiving converter according to claim 1, which is characterized in that the receiving converter further includes quiet for preventing
The sdi signal of electrical interference protects circuit (7), sdi signal protection circuit (7) and 3G-SDI signal receiver (1) phase
Connection.
3. receiving converter according to claim 1, which is characterized in that the receiving converter further includes power management list
First (6), the Power Management Unit (6) respectively with the 3G-SDI signal receiver (1), HDMI signal receiver (2), 3G-
Sdi signal cable drive (3), MCU master controller (4) are connected with SFP fiber optic receiver (5).
4. receiving converter according to claim 3, which is characterized in that the 3G-SDI signal receiver (1) is selected
GV7704 chip.
5. receiving converter according to claim 3, which is characterized in that the HDMI signal receiver (2) is selected
ADV7611 chip.
6. receiving converter according to claim 3, which is characterized in that 3G-SDI signal cable driver (3) choosing
With GS2989 chip.
7. receiving converter according to claim 3, which is characterized in that the MCU master controller (4) selects STC90C51
Single-chip microcontroller.
8. receiving converter according to claim 3, which is characterized in that the SFP fiber optic receiver (5) selects SMC-R-
297SDI-L2x receiving module.
9. receiving converter according to claim 3, which is characterized in that the Power Management Unit (6) selects AMS1117
Voltage stabilizing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821398955.7U CN208754432U (en) | 2018-08-27 | 2018-08-27 | A kind of receiving converter for 3G-SDI and fiber-optic signal |
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| CN201821398955.7U CN208754432U (en) | 2018-08-27 | 2018-08-27 | A kind of receiving converter for 3G-SDI and fiber-optic signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085267A (en) * | 2019-04-23 | 2019-08-02 | 晶晨半导体(上海)股份有限公司 | A kind of adjusting circuit making up component variations |
| CN111479096A (en) * | 2020-03-12 | 2020-07-31 | 合肥赛为智能有限公司 | Optical fiber signal encoder and method thereof |
| CN113596373A (en) * | 2021-07-28 | 2021-11-02 | 成都卓元科技有限公司 | 8K video processing architecture for converting 12G-SDI into HDMI2.1 |
-
2018
- 2018-08-27 CN CN201821398955.7U patent/CN208754432U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085267A (en) * | 2019-04-23 | 2019-08-02 | 晶晨半导体(上海)股份有限公司 | A kind of adjusting circuit making up component variations |
| CN110085267B (en) * | 2019-04-23 | 2022-02-08 | 晶晨半导体(上海)股份有限公司 | Make up regulating circuit of device difference |
| CN111479096A (en) * | 2020-03-12 | 2020-07-31 | 合肥赛为智能有限公司 | Optical fiber signal encoder and method thereof |
| CN113596373A (en) * | 2021-07-28 | 2021-11-02 | 成都卓元科技有限公司 | 8K video processing architecture for converting 12G-SDI into HDMI2.1 |
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