CN109309820A - A kind of HDMI active optical cable connecting line with monitoring and configuration feature - Google Patents
A kind of HDMI active optical cable connecting line with monitoring and configuration feature Download PDFInfo
- Publication number
- CN109309820A CN109309820A CN201811309392.4A CN201811309392A CN109309820A CN 109309820 A CN109309820 A CN 109309820A CN 201811309392 A CN201811309392 A CN 201811309392A CN 109309820 A CN109309820 A CN 109309820A
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- CN
- China
- Prior art keywords
- optical cable
- active optical
- hdmi
- configuration module
- receiving end
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Optical Communication System (AREA)
Abstract
A kind of HDMI active optical cable connecting line with monitoring and configuration feature, monitoring modular and configuration module is respectively set in HDMI AOC, wherein monitoring modular real-time detection high speed signal TMDS level, and the information is fed back into configuration module by copper wire or optical fiber, configuration module passes through configuration high-speed Termination state, carry out the TMDS level of real-time synchronization transmitting terminal and receiving end, it allows Source to detect, and solves compatibility issue, while can be reduced the power consumption of active optical cable.The present invention not only solves compatibility issue intrinsic in the application of HDMI active optical cable connecting line, also improves the usage experience of HDMI AOC, mitigates user's doubt, facilitates routine use.
Description
Technical field
The present invention relates to a kind of HDMI connection cables, monitor with configuration feature specifically, being related to a kind of have to solve line
Cable-end connects the HDMI active optical cable connection cables of compatibility.
Background technique
With the development of high-definition video technology, more and more videos play such as 1080P using high definition broadcast source,
The HD videos such as 720P.And high definition television to be enabled to play HD video, it needs above-mentioned height through high capacity connecting line
Clear video is transmitted to high definition terminal from HD video source, and high definition connecting line becomes wherein the key link.The more matchmakers of fine definition
Body interface (High Definition Multimedia Interface, HDMI) is a kind of digitized video/audio interface skill
Art is the tailored version digital interface for being suitble to image transmission, can transmit audio and video signal, the maximum data transmission speed simultaneously
Degree is 48Gbps.
HDMI active optical cable (Active Optical Cable AOC), be it is a kind of using optical fiber fabrication at HDMI signal pass
Defeated line, and its photoelectric conversion route is integrated in a kind of HDMI wire of interface.AOC high speed signal is uniline transmission at present
(Source--Sink), and electricity turns light, light turns electricity through optical one-way transmission, then light, so the end Source (i.e. broadcasting end)
Can not judge whether suspend mode or RX and Sink are disconnected at the end Sink (i.e. display end) by high speed signal.And HDMI copper wire, just without
The problem, because being directly connected between the end Source and the end Sink for copper wire.So this is the intrinsic problem of AOC.Therefore, HDMI
The suspend mode of the end Sink or disconnection can occur in use in active type cable, and the end Source can not be detected,
It is possible that the situation of mistake, such as when normal connection, Sink suspend mode, and Source thinks Sink also in just
Normal working condition, obtains without EDID or HDCP is authenticated；Or when only TX connects Source, source just goes to obtain sink
Edid, but Sink EDID can not be got at this time, and when RX is really connected, Source repeatedly obtains EDID due to starting
Failure no longer goes to obtain EDID and put and do not work.
Therefore, for the application of HDMI active optical cable connecting line, how to play the state that display end is known at end,
And configured to end is played, to solve the problems, such as HDMI active optical cable termination (HDMI AOC Termination) compatibility,
The technical issues of as prior art urgent need to resolve.
Summary of the invention
It is an object of the invention to propose a kind of HDMI for solving cable termination compatibility with configuration feature with monitoring
Active optical cable connecting line passes through copper by the way that monitoring modular real-time detection high speed signal TMDS level is respectively set, and by information
Line or optical fiber feed back to configuration module and configure to transmitting terminal, realize the TMDS level synchronization trim of transmitting terminal and receiving end,
To solve compatibility issue.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of HDMI active optical cable connecting line with monitoring and configuration feature, it is characterised in that:
Control line and data line, the transmitting terminal are used to connect including transmitting terminal, receiving end and between transmitting terminal and receiving end
It connects and plays end, the receiving end is used for transmission audio-video control signal, the data line for connecting display end, the control line
For being used for transmission audio, video data signal for optical fiber, there is high speed electro-optical conversion module in the transmitting terminal of the data line,
The receiving end of data line has high speed optoelectronic conversion module, is respectively used to realize the electric light of audio, video data signal on the data line
Or photoelectric conversion；
It is characterized in that, any end or both ends in transmitting terminal and receiving end are also respectively provided with monitoring modular and configuration mould
Block, wherein the monitoring modular is obtained and analyzed for monitoring the TMDS electric signal that the high speed optoelectronic conversion module parses
Termination (Termination) status information of display end, and send the status information to configuration module, the configuration module
For being configured according to the state information to the high speed electro-optical conversion module so that the TMDS signal level of transmitting terminal with
Receiving end TMDS signal level is consistent.
Optionally, the monitoring modular and configuration module are all integrated on HDMI active optical cable.
Optionally, the monitoring modular is located at receiving end, and the configuration module is located at transmitting terminal, the monitoring modular and matches
It sets and is connected between module by optical fiber or copper wire.
Optionally, the monitoring modular acquires the voltage in any one channel in 4 channels TMDS in real time, when being adopted
The voltage of collection is higher than certain threshold value, and representing receiving end has termination (Termination) state, conversely, representing the end RX without termination
(Termination) state.
Optionally, the threshold value is 2.2V.
Optionally, the HDMI active optical cable also has power supply line, provides 5V power supply, the monitoring modular and configuration module
From work to take power on the power supply line.
Optionally, the configuration module is for according to the state information matching the high speed electro-optical conversion module
It sets, so that the TMDS signal level of transmitting terminal is consistent with receiving end TMDS signal level specifically:
The ERX(electricity that the configuration module opens or closes the high speed electro-optical conversion module according to the state information receives son
Module) or entire electric receiving module.
Monitoring modular and configuration module is respectively set in the present invention in HDMI AOC, wherein monitoring modular real-time detection high speed
Signal TMDS level, and the information is fed back into configuration module, configuration module passes through configuration high-speed by copper wire or optical fiber
Termination state carrys out the TMDS level of real-time synchronization transmitting terminal and receiving end, Source is allowed to detect, and solves compatibility
Problem, while can be reduced the power consumption of active optical cable.The present invention not only solves intrinsic in the application of HDMI active optical cable connecting line
Compatibility issue also improves the usage experience of HDMI AOC, mitigates user's doubt, facilitates routine use.
Detailed description of the invention
Fig. 1 is the HDMI active optical cable connecting line with monitoring and configuration feature of specific embodiment according to the present invention
Schematic diagram.
The technical characteristic in appended drawing reference the respectively referred to generation in figure are as follows:
1, transmitting terminal；2, receiving end；3, control line；4, data line；5, high speed electro-optical conversion module；6, high speed optoelectronic modulus of conversion
Block；7, monitoring modular；8, configuration module；9, end is played；10, display end；11, power supply line.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Usual HDMI connecting line includes four road TMDS(Transition Minimized Differential
Signaling minimizes differential signal transmission) high speed signal and four control signals, display end 10 receive from HDMI interface
Tetra- road TMDS high speed signal of Dao is TMDS_0, TMDS_1, TMDS_2, TMDS_CLK.The four tunnels control being connected with video end
Signal is SCL, SDA, CEC, HPD(Hot Plug Detect).
When HDMI connects Source and Sink, if Sink is in normal boot-strap state, TMDS high speed
The voltage level in each channel of signal is in high level；If receiving end and Sink are disconnected and receiving end is in standby or suspend mode
State, then the voltage level in each channel of TMDS high speed signal can all be in low level.
The invention reside in: in HDMI AOC monitoring modular and configuration module is respectively set, wherein monitoring modular is examined in real time
High speed signal TMDS level is surveyed, and the information is fed back into configuration module, configuration module is by configuring height by copper wire or optical fiber
Fast Termination state carrys out the TMDS level of real-time synchronization transmitting terminal and receiving end, Source is allowed to detect, and solves compatibility
Property problem, while can be reduced the power consumption of active optical cable.The present invention not only solves intrinsic in the application of HDMI active optical cable connecting line
Compatibility issue, also improve HDMI AOC usage experience, mitigate user's doubt, facilitate routine use.
Referring to Fig. 1, the schematic diagram of the HDMI active optical cable connecting line of specific embodiment according to the present invention, a kind of band are shown
There are a HDMI active optical cable connecting line of monitoring and configuration feature, including transmitting terminal 1, receiving end 2 and in transmitting terminal 1 and receiving end
Control line 3 and data line 4 between 2, the transmitting terminal 1 play end 9 for connecting, and the receiving end 2 is used to connect display end 10,
The control line 3 is used for transmission audio-video control signal, and the data line 4 is that optical fiber is used for transmission audio, video data signal,
The transmitting terminal 1 of the data line 4 has high speed electro-optical conversion module 5, has high speed optoelectronic modulus of conversion in the receiving end of data line 2
Block 6 is respectively used to the electric light realized audio, video data signal on the data line or photoelectric conversion；It is characterized in that, sending
End 1 and any end in receiving end 2 or both ends are also respectively provided with monitoring modular 7 and configuration module 8, wherein the monitoring modular
7 for monitoring the TMDS electric signal that the high speed optoelectronic conversion module 6 parses, obtaining and analysis shows that holding 10 termination
(Termination) status information, and send the status information to configuration module 8, the configuration module 8 is used for according to institute
It states status information to configure the high speed electro-optical conversion module 5, so that the TMDS signal level of transmitting terminal and receiving end
TMDS signal level is consistent.
Therefore, Source is synchronous with Sink, solves cable termination compatibility.
Wherein, the monitoring modular and configuration module are all integrated on HDMI active optical cable, can be respectively positioned on transmitting terminal,
It can be respectively positioned on receiving end, preferably, the monitoring modular is located at receiving end, and the configuration module is located at transmitting terminal, the prison
Surveying between module and configuration module can be connected by optical fiber or copper wire.
Monitoring modular can remove the monitoring end RX high speed signal in HDMI, and phase is obtained on the basis of not interfering original behavior
Termination status information is closed, after analysis processing, is transferred to configuration module, configuration module configures electric receiving module, closes TX
Hold Termination state.
The HDMI active optical cable also has power supply line 11, provides 5V power supply, the core of the monitoring modular and configuration module
The heart is the MCU of low-power consumption and small package, can be from work to take power on power supply line 11.
After HDMI connection plays end power supply, configuration module and monitoring modular are started to work.Pass through monitoring modular MCU ADC
TMDS voltage between the acquisition end RX and Sink in real time, it is preferred that the electricity in any one channel in 4 channels TMDS can be acquired
Pressure.It is then height, representing the end RX has termination (Termination) state, it is believed that RX if voltage is higher than certain threshold value, such as 2.2V
End is connect with Sink and Sink HDMI interface working condition.Conversely, representing the end RX without termination (Termination) state, it is believed that
The end RX and Sink are disconnected or HDMI mouthfuls of Sink are in standby.
Monitoring modular MCU is communicated by copper wire or optical fiber and configuration module MCU, and the end RX Termination state is real-time
Configuration module is fed back to, the communication protocol between monitoring modular and configuration module can be Uart, IIC etc..
Configuration module receives termination (Termination) status information, then passes through configuration module MCU and the end AOC TX
The communication of AOC high speed electro-optical conversion IC, configures IC electricity receiving module, can open or close the ERX(IC of high speed electro-optical conversion module
Electric receiving submodule) or entire electric receiving module, realize that just (RX has for the level of control 4, the end Source and TX TMDS
Termination is then height；Conversely, then to be low), inform the Termination state of Source Sink at this time, and make
Source takes corresponding behavior.
To sum up, monitoring modular and configuration module is respectively set in the present invention in HDMI AOC, and wherein monitoring modular is examined in real time
High speed signal TMDS level is surveyed, and the information is fed back into configuration module, configuration module is by configuring height by copper wire or optical fiber
Fast Termination state carrys out the TMDS level of real-time synchronization transmitting terminal and receiving end, Source is allowed to detect, and solves compatibility
Property problem, while can be reduced the power consumption of active optical cable.The present invention not only solves intrinsic in the application of HDMI active optical cable connecting line
Compatibility issue, also improve HDMI AOC usage experience, mitigate user's doubt, facilitate routine use.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
A specific embodiment of the invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by institute
Claims of submission determine protection scope.
Claims (7)
1. a kind of HDMI active optical cable connecting line with monitoring and configuration feature, it is characterised in that:
Control line and data line, the transmitting terminal are used to connect including transmitting terminal, receiving end and between transmitting terminal and receiving end
It connects and plays end, the receiving end is used for transmission audio-video control signal, the data line for connecting display end, the control line
For being used for transmission audio, video data signal for optical fiber, there is high speed electro-optical conversion module in the transmitting terminal of the data line,
The receiving end of data line has high speed optoelectronic conversion module, is respectively used to realize the electric light of audio, video data signal on the data line
Or photoelectric conversion；
It is characterized in that, any end or both ends in transmitting terminal and receiving end are also respectively provided with monitoring modular and configuration mould
Block, wherein the monitoring modular is obtained and analyzed for monitoring the TMDS electric signal that the high speed optoelectronic conversion module parses
Termination (Termination) status information of display end, and send the status information to configuration module, the configuration module
For being configured according to the state information to the high speed electro-optical conversion module so that the TMDS signal level of transmitting terminal with
Receiving end TMDS signal level is consistent.
2. HDMI active optical cable connecting line according to claim 1, it is characterised in that:
The monitoring modular and configuration module are all integrated on HDMI active optical cable.
3. HDMI active optical cable connecting line according to claim 2, it is characterised in that:
The monitoring modular is located at receiving end, and the configuration module is located at transmitting terminal, between the monitoring modular and configuration module
It is connected by optical fiber or copper wire.
4. HDMI active optical cable connecting line according to claim 1, it is characterised in that:
The monitoring modular acquires the voltage in any one channel in 4 channels TMDS in real time, when voltage collected is higher than
Certain threshold value, representing receiving end has termination (Termination) state, conversely, representing the end RX without termination (Termination) shape
State.
5. HDMI active optical cable connecting line according to claim 4, it is characterised in that:
The threshold value is 2.2V.
6. HDMI active optical cable connecting line according to claim 1, it is characterised in that:
The HDMI active optical cable also has power supply line, provides 5V power supply, the monitoring modular and configuration module from the power supply
Work to take power on line.
7. HDMI active optical cable connecting line according to claim 1, it is characterised in that:
The configuration module is for according to the state information configuring the high speed electro-optical conversion module, so that transmitting terminal
TMDS signal level it is consistent with receiving end TMDS signal level specifically:
The ERX(electricity that the configuration module opens or closes the high speed electro-optical conversion module according to the state information receives son
Module) or entire electric receiving module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309392.4A CN109309820B (en) | 2018-11-05 | 2018-11-05 | HDMI active optical cable connecting wire with monitoring and configuration functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811309392.4A CN109309820B (en) | 2018-11-05 | 2018-11-05 | HDMI active optical cable connecting wire with monitoring and configuration functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109309820A true CN109309820A (en) | 2019-02-05 |
| CN109309820B CN109309820B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811309392.4A Active CN109309820B (en) | 2018-11-05 | 2018-11-05 | HDMI active optical cable connecting wire with monitoring and configuration functions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719423A (en) * | 2019-08-01 | 2020-01-21 | 长芯盛（武汉）科技有限公司 | Self-adaptive HDMI cable |
| CN112911184A (en) * | 2021-02-05 | 2021-06-04 | 福清天祥电子配件有限公司 | Active optical fiber HDMI connecting wire with bidirectional connection function |
| CN113852448A (en) * | 2021-11-26 | 2021-12-28 | 长芯盛（武汉）科技有限公司 | Device compatible with multiple transmission rates of active cable and method thereof |
| CN114222178A (en) * | 2022-02-21 | 2022-03-22 | 长芯盛（武汉）科技有限公司 | HDMI active optical cable and method and medium for synchronizing termination state information thereof |
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| CN114222178A (en) * | 2022-02-21 | 2022-03-22 | 长芯盛（武汉）科技有限公司 | HDMI active optical cable and method and medium for synchronizing termination state information thereof |
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| CN109309820B (en) | 2020-12-22 |
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