CN106791555A - A kind of single netting twine extender of data transmission method, HDMI signals - Google Patents
A kind of single netting twine extender of data transmission method, HDMI signals Download PDFInfo
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- CN106791555A CN106791555A CN201611250307.2A CN201611250307A CN106791555A CN 106791555 A CN106791555 A CN 106791555A CN 201611250307 A CN201611250307 A CN 201611250307A CN 106791555 A CN106791555 A CN 106791555A
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- edid information
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- outgoing interface
- master chip
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
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- 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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Abstract
The application provides a kind of data transmission method, single netting twine extender of HDMI signals, increase ring outgoing interface and memory on transmitter, ring outgoing interface is used to connect display, when controller detects trigger signal, and ring outgoing interface with display when being connected, controller or master chip read the EDID information of the display for being connected to ring outgoing interface, and store in memory, EDID information is written in master chip again, so that source equipment reads EDID information.Namely the present invention realizes source equipment and obtains the corresponding EDID information of rear end display in real time by ring outgoing interface, when more switching display every time, ring outgoing interface can be first passed through and read the corresponding EDID information of display, and store, it is written in master chip by controller, when subsequent source end equipment needs to read, the corresponding EDID information of display is directly obtained from master chip, so as to improve the compatibility of display and source equipment.
Description
Technical field
The present invention relates to signal transmission technology field, more particularly to a kind of data transmission method, HDMI signals single netting twine
Extender.
Background technology
HDMI (High Definition Multimedia Interface, HDMI) is used as new one
Algebraically word multimedia interface, can transmit DAB, video data of the two-forty without compression.Current high-definition image transmission is also big
Select this interface more.HDMI also has become the interface standard of consumer electronics, wide in digital camera and DTV
It is general to use.
As shown in figure 1, being HDMI Transmission systems, as can be seen from the figure HDMI Transmission systems mainly include HDMI transmitters
03rd, HDMI receiver 05 and HDMI Cable cables 04, HDMI Cable cables 04 include 3 TMDS (Transition
Minimized Differential Signaling, transmit the differential signal for minimizing) data channel, 1 TMDS clock lead to
Road and DDC (Display Data Channel, DDC) passage, four TMDS high-speed differential signal passages are main
For transmission video signal Video and audio signal Audio.DDC (Display Data Channel, DDC) leads to
Road is used for reading EDID (the Extended Display Identification Data, extension display of receiver display 02
Mark data) information, EDID information contains the information such as the resolution ratio of display, audio.HDCP(High-bandwidth
Digital Content Protection, HDCP) dohandshake action can also be completed on DDC passages,
For preventing HDMI signals to be replicated.DDC signals include SDA (SerialData, serial data) signals and SCL
(SerialClock, serial clock) signal.When source equipment 01 reads the EDID of display 02 by DDC passages, just utilize
TMDS passages send audio frequency and video to display 02.
It is cost-effective, currently on the market mostly by HDMI signals but HDMI wire material HDMI cable's is expensive
Long-distance transmissions are realized by netting twine.Because HDMI Cable are by 19 copper transmissions, and a netting twine has 8 copper cash, this
Sample is accomplished by two netting twines to transmit HDMI signals.But the method for two network cable transmissions is complex, uses inconvenience.In the market is gradually
Gradually there are the mono- netting twine extenders of HDMI, using single network cable transmission data.But during single network cable transmission, source equipment without
Method obtains the corresponding EDID information of display, causes display and the incompatible problem of source equipment.
The content of the invention
In view of this, the present invention provides a kind of data transmission method, single netting twine extender of HDMI signals, existing to solve
In technology during single network cable transmission, source equipment cannot obtain the corresponding EDID information of display, cause display and source to set
Standby incompatible problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of single netting twine extender of HDMI signals, including：Transmitter, single netting twine and receiver；
The transmitter includes input, output end, memory, ring outgoing interface, master chip and controller；
The receiver includes input and output end；
The input of the transmitter is used to connect source equipment, and the output end of the transmitter passes through the single netting twine
Input with the receiver is connected, and the output end of the receiver is connected with display；
The master chip includes first end, the second end and the 3rd end, wherein, the first end connects the ring outgoing interface,
Second end connects the input of the transmitter, the first end of controller described in the three-terminal link；
Wherein, the ring outgoing interface is used to connect the display；
When the controller detects trigger signal, and the ring outgoing interface with the display when being connected, the control
Device reads the EDID information of the display for being connected to the ring outgoing interface, or the controller is read by controlling the master chip
The EDID information of the display of the ring outgoing interface is connected to, and by the EDID information Stores in the memory, and will
EDID information in the memory is written in the master chip, so that the source equipment reads the EDID information.
Preferably, the transmitter also includes button, and the button is connected with the second end of the controller, for being institute
State controller and the trigger signal is provided.
Preferably, also including monitoring display device, the monitoring display device is connected with the ring outgoing interface；
When the ring outgoing interface is connected with the monitoring display device, the output end of the receiver and the display phase
Even, the ring outgoing interface exports identical TMDS signals with the output end of the transmitter, and the monitoring display device is aobvious with described
Show that device shows identical image.
Preferably, the memory is located inside the controller.
Preferably, the memory is band EEPROM.
Preferably, the ring outgoing interface is HDMI.
The present invention also provides a kind of data transmission method, single netting twine of the HDMI signals being applied to described in any of the above
The transmitter of extender, the data transmission method includes：
Whether detection ring outgoing interface is connected with display, while detecting whether to receive trigger signal；
If the ring outgoing interface is connected with display, and receives trigger signal, then reads and be connected to the ring outgoing interface
The EDID information of display, and by the EDID information Stores in the memory；
Or control master chip reads the EDID information of the display for being connected to the ring outgoing interface, and by the EDID information
Storage is in the memory；
EDID information in the memory is written in the first memory module of the master chip, for the source
Equipment reads the EDID information；And return to whether the detection ring outgoing interface is connected with display, while detecting whether to receive
Trigger signal step.
Preferably, also include：
Detect whether the ring outgoing interface is connected with monitoring display device, while detecting whether to receive trigger signal；
If detecting the ring outgoing interface is connected with monitoring display device, and is not detected by trigger signal, then the prison is controlled
Control display shows.
Preferably, the control master chip reads the EDID information of the display for being connected to the ring outgoing interface, and by institute
Stating EDID information Stores detailed process in the memory includes：
Control the master chip to read the EDID information, and store in the second memory cell of the master chip；
The EDID information is read from the second memory cell of the master chip, by the EDID information Stores described in
In memory.
Preferably, the EDID information is read in second memory cell from the master chip, by EDID letters
Breath is stored in the memory, wherein, will be specifically included in the EDID information Stores to the memory：
Judge whether the EDID information is effective；
If so, then by the EDID information Stores to the memory；
If it is not, then returning to the control master chip reads the EDID information, and store the of the master chip
In two memory cell, the EDID information Steps are read from the second memory cell of the master chip, until the EDID believes
Breath is effective or reaches default reading times, terminates.
Understood via above-mentioned technical scheme, single netting twine extender of the HDMI signals that the present invention is provided, on transmitter
Increase ring outgoing interface and memory, the ring outgoing interface is used to connect display, and when controller detects trigger signal, and ring goes out
When interface is connected with display, controller reads the EDID information of the display for being connected to ring outgoing interface, or controller by control
Master chip processed reads the EDID information of the display for being connected to ring outgoing interface, and by EDID information Stores in memory；Work as source
When end equipment reads EDID information, be written to the EDID information in memory in master chip by controller, so that source equipment is read
Take EDID information.Namely single netting twine extender of the HDMI signals of present invention offer realizes source equipment reality by ring outgoing interface
When obtain the corresponding EDID information of rear end display, when more switching display every time, can first pass through ring outgoing interface and read institute
The corresponding EDID information of display is stated, and is stored, be written in master chip by controller, need to read in subsequent source end equipment
When, the corresponding EDID information of display is directly obtained from master chip, so as to improve the compatibility of display and source equipment,
Solve in the prior art because source equipment cannot obtain the corresponding EDID information of display, cause display and source equipment
Incompatible problem.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is HDMI Transmission systems structural representation in the prior art；
Fig. 2 is a kind of single netting twine extender structural representation of HDMI signals provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of the transmitter of single netting twine extender of HDMI signals provided in an embodiment of the present invention
Figure；
Fig. 4 is a kind of HDMI Transmission systems structural representation provided in an embodiment of the present invention；
Fig. 5 is another HDMI Transmission systems structural representation provided in an embodiment of the present invention；
Fig. 6 is that a kind of data of single netting twine extender transmitter for being applied to HDMI signals provided in an embodiment of the present invention are passed
Defeated flow chart.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
When replacing HDMI wire material to transmit TMDS signals using single netting twine, due to that can only be transmitted on four pairs of twisted-pair feeders of netting twine
TMDS signals, are used to transmit the EDID information of display without DDC passages, of the prior art to realize single network cable transmission
Way is：EDID information based on most display has a general character, i.e., all support the resolution ratio of 480p to 1080p,
Two channel audios of simulation are all supported, common information is write into EEPROM (Electrically Erasable
Programmable Read-Only Memory, band EEPROM) it is inner, EEPROM is placed on transmitter
End, allows source equipment to go to read the EDID information inside EEPROM with program, and the EDID information of display is read without spending, when
After source equipment reads correct EDID information, it is possible to send audio/video information.
But, from above-mentioned prior art it is known that using the monitor information with general character in the prior art, and
It is not display EDID information in itself, and only when the EDID information in EEPROM is correct, i.e., the EDID with display believes
Manner of breathing could send audio/video information in the case of, and the problem for so existing is：If EDID information and display in EEPROM
The EDID Asymmetry informations of device are answered, and source equipment cannot obtain the corresponding EDID information of display, the then sound for being sent by source equipment
When frequency signal or vision signal reach display, display cannot normally show, cause display incompatible with source equipment
Problem.
Based on this, the present invention provides a kind of single netting twine extender of HDMI signals, as shown in Fig. 2 being the embodiment of the present invention
A kind of single netting twine extender structural representation of the HDMI signals for providing, including：Transmitter 3, single netting twine 4 and receiver 5；Hair
Sending device 3 includes input 31, output end 32, memory 351, ring outgoing interface 33, master chip 34 and controller 35；Receiver 5 is wrapped
Include input 51 and output end 52；The input 31 of transmitter 3 is used to connect source equipment (not shown), transmitter 3
Output end 32 is connected by single netting twine 4 with the input 51 of receiver 5, and the output end 52 of receiver 5 is with display (in figure not
Show) it is connected；Wherein, ring outgoing interface 33 is used to connect the display, and reads the EDID information of the display；Memory
351 are used to store the EDID information, and when controller 35 detects trigger signal, and ring outgoing interface 33 with display when being connected,
Controller 35 reads the EDID information of the display for being connected to ring outgoing interface 33, or controller 35 is read by controlling master chip 34
The EDID information of the display of ring outgoing interface 33 is connected to, and by EDID information Stores in memory 351；When source equipment is read
When taking EDID information, be written to the EDID information in memory 351 in master chip 34 by controller 35, so that source equipment reads
EDID information.
Single netting twine extender of HDMI signals provided in an embodiment of the present invention, increases on transmitter 3 there is provided ring goes out to connect
Mouth 33, ring outgoing interface 33 is HDMI, for connecting display, and works as controller 35 and detects the connection display of ring outgoing interface
Device, and when being detected simultaneously by trigger signal, read by controller 35 or the control master chip 34 of controller 35 reads display
In EDID information, and memory 351 of the storage inside transmitter 3, so that subsequent source end equipment needs to read display correspondence
EDID information when, can be read from memory 351, and every time more switching display when, display can be inserted
To in ring outgoing interface 33, device to be controlled 35 or master chip 34 read and after the corresponding EDID information of iatron, then will display
Device is connected with receiver, and for normal display, and the corresponding EDID information of the display of storage is written to main core by controller 35
In the memory module of piece 34, for the reading of subsequent source end equipment.Namely using the list of HDMI signals provided in an embodiment of the present invention
When netting twine extender carries out data transmission, the EDID information that source equipment is obtained is real-time, and corresponding with rear end display
EDID information such that it is able to ensure that the EDID information of display is corresponding with display, and then improve display and source equipment
Compatibility, solve in the prior art because source equipment cannot obtain the corresponding EDID information of display, cause display
The problem incompatible with source equipment.
It should be noted that in the present embodiment after controller completes to first power on operation, will be in memory it is aobvious
Show that the corresponding EDID information of device is written in the memory module of master chip 34, for the reading of subsequent source end equipment.Work as controller
35 detect ring outgoing interface 33 again is connected to display, and when detecting trigger signal, is read again by controller 35
The EDID information of display, or EDID information is read by controlling master chip 34, controller 35 reads described from master chip again
EDID information；By in the EDID information Stores to memory 351, the EDID information in more new memory 351, and after updating
EDID information be written in master chip 34, so that source equipment reads the EDID information.
In addition, it is necessary to explanation, when EDID information is read, it is straight by controller 35 not limited in the embodiment of the present invention
The EDID information that ring outgoing interface 33 reads display was connected, or display was read by ring outgoing interface 33 by master chip 34
EDID information after, controller 35 reads EDID information from master chip 34 again, and stores in memory, two in the present embodiment
The mode of kind is capable of achieving, and this is not limited in the present embodiment.
Fig. 3 is that a kind of internal structure of the transmitter of single netting twine extender of HDMI signals provided in an embodiment of the present invention is shown
It is intended to, as shown in figure 3, transmitter provided in an embodiment of the present invention 3 also includes button 36, the of the button 36 and controller 35
Two ends connect, and button 36 is used to provide trigger signal for controller 35, and the trigger signal is used to control whether that reading is connected to
The EDID information of the display of the ring outgoing interface.When display is connected with ring outgoing interface 33, button 36 is pressed, and sends
Go out trigger signal, and detected by controller 35, then perform the action of the EDID information for reading the display.
Please continue to refer to shown in Fig. 3, in the internal structure of transmitter provided in an embodiment of the present invention 3, master chip 34 includes
First end, the second end and the 3rd end, wherein first end connection ring outgoing interface 33, the input 31 of the second end linkup transmit device 3,
The first end of three-terminal link controller 35；Second end of controller 35 is connected with button 36, and memory 351 is located at controller 35
It is internal.Controller 35 can obtain the working condition of master chip 34 and control master chip 34 to act in the present embodiment, wherein, storage
Device 351 is located inside controller, and by the control function of controller 35, whether detection button 36 sends trigger signal, so as to control
The mode of operation of ring outgoing interface 33 processed.
Specifically, its workflow includes：
Whether the rear end of the detection HDMI OUT rings of controller 35 outgoing interface 33 first has display to connect；If HDMI
OUT rings outgoing interface 33 has display to connect, and controller 35 detects the trigger signal that button 36 sends, then controller 35
Master chip 34 will be controlled to go to obtain the EDID information of the display connected on ring outgoing interface 33, then controller 35 is from master chip
EDID information is read in 34 memory module；Or the EDID of the display connected on the direct access ring outgoing interface 33 of controller 35
Information, controller 35 obtains the EDID information of display and detects, detection is stored in inside controller 35 by by EDID information
Memory 351 in, the particular type of memory 351 is not limited in the present embodiment, for ease of after power down still have store function,
Optional in the present embodiment, memory 351 is band EEPROM (EEPROM).
It should be noted that in the case where display is changed without, namely corresponding EDID information is without the situation of replacing
Under, upper electricity is avoided the need for more than deduplication again operating every time, and the EDID information of display directly can be write main core by controller 35
The inside supply source end equipment of piece 34 is obtained.
Fig. 4 is referred to, Fig. 4 is a kind of HDMI Transmission systems structural representation provided in an embodiment of the present invention, transmitter 3
Input 31 is connected by HDMI wire material 61 with source equipment 1, for being input into HDMI signals；Output end 32 passes through netting twine 4 and connects
The input 51 for receiving device 5 is connected, and the output end 52 of receiver 5 is connected by HDMI wire material 62 with display 2.
When button 36 is pressed, the trigger signal for sending is detected by controller 35, and controller 35 detects display 2
When being connected to ring outgoing interface 33 by HDMI wire material 62, controller 35 is directly read on display 2 by ring outgoing interface 33
EDID information, or the control master chip 34 of controller 35 reads the EDID information on display 2 by ring outgoing interface 33, and by institute
EDID information Stores are stated in memory 351, the EDID information in memory 351 is written to the storage of master chip 34 for control 35
In module, so that source equipment 1 reads the EDID information, when subsequent source end equipment 1 needs to obtain the corresponding EDID of display 2
During information, the corresponding EDID information of display 2 is read from master chip 34 by input 31.
Single netting twine extender of HDMI signals provided in an embodiment of the present invention, on transmitter increase set ring outgoing interface and
Memory construction, so that when carrying out data transmission, the EDID information that source equipment is obtained is real-time, and is shown with rear end
The corresponding EDID information of device such that it is able to ensure that the EDID information of display is corresponding with display, so improve display and
The compatibility of source equipment, solves in the prior art because source equipment cannot obtain the corresponding EDID information of display, leads
Cause display and the incompatible problem of source equipment.
In addition, single netting twine extender of the HDMI signals that another embodiment of the present invention is provided, its ring outgoing interface is also with it
His miscellaneous function, shown in Figure 5, Fig. 5 is another HDMI Transmission systems structural representation provided in an embodiment of the present invention；
Wherein, trigger signal is not sent when controller 35 detects button 36, but detects ring outgoing interface 33 and be connected with monitoring display device,
Wherein, during the EDID information of display 2 has stored in memory 351, and the first of master chip 34 is written to by controller 35
In memory module.
Ring outgoing interface 33 can connect monitoring display device 2 ' by HDMI wire material 63, and source equipment 1 is by reading master chip
After the corresponding EDID information of display 2 in 34, TMDS signals are exported to transmitter output end 32, while being sent out to ring outgoing interface 33
HDMI signals are sent, the TMDS signals in the HDMI signals are identical with to the output TMDS signals of transmitter output end 32, so as to
It is enough to send identical audio-video signal to display 2 and monitoring display device 2 ' simultaneously, so as in display 2 and monitoring display device 2 '
Middle display identical image, in practical application, the distance sources end equipment 1 of monitoring display device 2 ' is relatively near, and display 2 is located at distal end,
It is convenient to check and monitor so as in the video display information of source equipment end monitor in real time remote display 2, if display
2 occur because of the display failure that TMDS signals are produced, then to be pinpointed the problems in real time by monitoring display device 2 ', so that soon in distal end
Speed is solved.
Specifically can be main with continued reference to Fig. 5, the HDMI signals transmitted between the input 31 and master chip 34 of transmitter 3
The HDMI signals of same transmission between chip 34 and ring outgoing interface 33, and between the output end 32 of master chip 34 and transmitter 3 only
TMDS signals are only transmitted, wherein, the TMDS letters in the TMDS signals and the HDMI signals between master chip 34 and ring outgoing interface 33
It is number identical such that it is able to so that the display being connected with receiver, and the monitoring display device being connected with ring outgoing interface 33 is received
Identical audio-video signal, and then identical image and picture are shown, realize the monitoring function of monitoring display device.
Now the workflow of transmitter 3 includes：
Whether the detection HDMI OUT rings of controller 35 outgoing interface 33 has monitoring display device to connect；If HDMI OUT rings go out
Interface 33 has monitoring display device to connect, and controller 35 is not detected by the trigger signal that button 36 sends, then controller 35
HDMI signaling paths between control master chip 34 conducting input 31 and ring outgoing interface 33, so that when source equipment from master
After chip 34 obtains the EDID information of display 2, HDMI signals are sent, ring outgoing interface 33 exports identical with RJ45 output ends 32
TMDS signals so that display and monitoring display device receive identical audio-video signal, and then show identical image or picture.
It should be noted that monitoring display device described in the present embodiment can be that identical shows with the display of rear end
Device, or different displays, the embodiment of the present invention are not limited this.When monitoring display device and rear end display are phase
With display when, both have identical EDID information.When monitoring display is different displays from rear end display, source
End equipment obtains both corresponding EDID information respectively, carries out HDMI signal transmissions.Wherein, source equipment obtains monitoring display device
EDID information processes in, without single netting twine, thus with the prior art by HDMI wire material obtain EDID information phases
Together, this is not repeated in the present embodiment.
Single netting twine extender of the HDMI signals provided in the present embodiment, also including monitoring display device, by ring outgoing interface
Connection monitoring display device so that monitoring display device is identical with display display content, so that in source equipment end in display
Appearance is monitored, and can solve the problem that transmitter only one of which network interface output end in the prior art, during long-distance transmissions, source equipment end
The problem of display actual video display information cannot be known, facilitate the failure monitoring of display.
The embodiment of the present invention also provides a kind of data transmission method, the list of the HDMI signals being applied to described in above example
Netting twine extender sends, as shown in fig. 6, being a kind of single netting twine extender for being applied to HDMI signals provided in an embodiment of the present invention
The data transfer flow figure of transmitter, the data transmission method is specifically included：
Step S101：Whether detection ring outgoing interface is connected with display, while detecting whether to receive trigger signal；
It should be noted that the transmitter in the embodiment of the present invention can also include button, button is connected with controller, uses
In providing the trigger signal for controller.
Step S102：If the ring outgoing interface is connected with display, and receives trigger signal, then reads and be connected to the ring
The EDID information of the display of outgoing interface, and by the EDID information Stores in the memory；Or control master chip reads
The EDID information of the display of the ring outgoing interface is connected to, and by the EDID information Stores in the memory；
Namely in the present embodiment, only when ring outgoing interface is connected with display, and trigger signal being received, controller passes through institute
State ring outgoing interface and read the EDID information of the display being connected on the ring outgoing interface, and the EDID information Stores are being deposited
In reservoir；Or controller control master chip reads the EDID information of the display for being connected to the ring outgoing interface.
Step S103：EDID information in the memory is written in the first memory module of the master chip, with
The EDID information is read for the source equipment；And return to whether the detection ring outgoing interface is connected with display, while inspection
Whether survey receives trigger signal step.
It should be noted that in the present embodiment after controller completes to first power on action, will be in memory
EDID information is written in the first memory module of the master chip, so that the source equipment reads the EDID information, only
Otherwise power-off, it is not necessary to be repeatedly written the action of EDID information.
Hereafter, return to whether the detection ring outgoing interface is connected with display, while detecting whether to receive trigger signal step
Suddenly, i.e., whether real-time detection has more switching display, and trigger signal, when detecting display again, and detects triggering letter
Number, then the EDID information of the display connected on ring outgoing interface is re-read, and store in memory, the EDID before replacing it
Information, and new EDID information is written in master chip, so that source equipment reads the EDID information.
In addition, in the embodiment of the present invention, also including detecting whether the ring outgoing interface is connected with monitoring display device, while inspection
Whether survey receives trigger signal；If detecting the ring outgoing interface is connected with monitoring display device, and is not detected by trigger signal, then
The monitoring display device is controlled to show.Monitoring display device is connected by ring outgoing interface so that monitoring display device and display are aobvious
Show that content is identical, so as to be monitored to display contents in source equipment end, can solve the problem that transmitter only has in the prior art
One network interface output end, during long-distance transmissions, source equipment end cannot know the problem of display actual video display information, side
Just the failure monitoring of display.
It should be noted that when controller control master chip reads the display for being connected to the ring outgoing interface in the present embodiment
The EDID information of device, and during by the EDID information Stores in the memory, its detailed process includes：Control the main core
Piece reads the EDID information, and stores in the second memory cell of the master chip；From the second storage of the master chip
The EDID information is read in unit, by the EDID information Stores to the memory.That is, master chip reads EDID letters
After breath, in first storing the second memory cell inside master chip, then there is controller that the EDID information is read from master chip,
In storing memory.
In addition, when controller is by EDID information Stores to memory in the present embodiment, also including：Judge the EDID letters
Whether breath is effective；If so, then by the EDID information Stores to the memory；If it is not, then returning to the control master
Chip reads the EDID information, and stores in the second memory cell of the master chip, is deposited from the second of the master chip
The EDID information Steps are read in storage unit, until the EDID information is effective or reaches default reading times, is terminated.
Namely also include detecting the step whether EDID information effective in the embodiment of the present invention, if effectively, will be described
EDID information Stores are in the memory.If invalid, continue to control master chip from the reading EDID information, and storage to exist
In second memory cell of the master chip, the EDID information is read from the second memory cell of the master chip, until
Effective EDID information is read, or pre-sets the time number limiting of reading, if reach the default reading times, terminated.
If it should be noted that judging for controller directly reads EDID information by ring outgoing interface in the present embodiment
To the EDID information for reading it is invalid when, then controller continues through ring outgoing interface and reads EDID information, until reading effective
EDID information, or the time number limiting of reading is pre-set, when reaching the default reading times, terminate.
Pass through the storage of the reading EDID information and memory of ring outgoing interface in the embodiment of the present invention, by display correspondence
EDID information Stores in memory, when source equipment needs to read EDID information, display can be read from memory
The corresponding EDID information of device, so that EDID information is all corresponding with display, solves EDID information in the prior art
Display and the poor problem of source equipment compatibility that fixation is caused, it is compatible with source equipment so as to improve display
Property.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (10)
1. single netting twine extender of a kind of HDMI signals, it is characterised in that including：Transmitter, single netting twine and receiver；
The transmitter includes input, output end, memory, ring outgoing interface, master chip and controller；
The receiver includes input and output end；
The input of the transmitter is used to connect source equipment, and the output end of the transmitter passes through the single netting twine and institute
The input for stating receiver is connected, and the output end of the receiver is connected with display；
The master chip includes first end, the second end and the 3rd end, wherein, the first end connects the ring outgoing interface, described
Second end connects the input of the transmitter, the first end of controller described in the three-terminal link；
Wherein, the ring outgoing interface is used to connect the display；
When the controller detects trigger signal, and the ring outgoing interface, when being connected with the display, the controller is read
The EDID information of the display for being connected to the ring outgoing interface is taken, or the controller reads connection by controlling the master chip
In the EDID information of the display of the ring outgoing interface, and by the EDID information Stores in the memory, and will be described
EDID information in memory is written in the master chip, so that the source equipment reads the EDID information.
2. single netting twine extender of HDMI signals according to claim 1, it is characterised in that the transmitter also includes pressing
Key, the button is connected with the second end of the controller, for providing the trigger signal for the controller.
3. single netting twine extender of HDMI signals according to claim 2, it is characterised in that also including monitoring display device,
The monitoring display device is connected with the ring outgoing interface；
When the ring outgoing interface is connected with the monitoring display device, the output end of the receiver is connected with the display,
The ring outgoing interface exports identical TMDS signals, the monitoring display device and the display with the output end of the transmitter
Display identical image.
4. single netting twine extender of HDMI signals according to claim 3, it is characterised in that the memory is located at described
Inside controller.
5. single netting twine extender of HDMI signals according to claim 4, it is characterised in that the memory for it is powered can
EPROM.
6. single netting twine extender of HDMI signals according to claim 5, it is characterised in that the ring outgoing interface is HDMI
Interface.
7. a kind of data transmission method, it is characterised in that the list of the HDMI signals being applied to described in claim 1-6 any one
The transmitter of netting twine extender, the data transmission method includes：
Whether detection ring outgoing interface is connected with display, while detecting whether to receive trigger signal；
If the ring outgoing interface is connected with display, and receives trigger signal, then the display for being connected to the ring outgoing interface is read
The EDID information of device, and by the EDID information Stores in the memory；
Or control master chip reads the EDID information of the display for being connected to the ring outgoing interface, and by the EDID information Stores
In the memory；
EDID information in the memory is written in the first memory module of the master chip, for the source equipment
Read the EDID information；And return to whether the detection ring outgoing interface is connected with display, while detecting whether to receive triggering
Signals step.
8. data transmission method according to claim 7, it is characterised in that also include：
Detect whether the ring outgoing interface is connected with monitoring display device, while detecting whether to receive trigger signal；
If detecting the ring outgoing interface is connected with monitoring display device, and is not detected by trigger signal, then control the monitoring aobvious
Show that device shows.
9. data transmission method according to claim 7, it is characterised in that the control master chip read be connected to it is described
The EDID information of the display of ring outgoing interface, and detailed process includes in the memory by the EDID information Stores：
Control the master chip to read the EDID information, and store in the second memory cell of the master chip；
The EDID information is read from the second memory cell of the master chip, by the EDID information Stores to the storage
In device.
10. data transmission method according to claim 9, it is characterised in that second storage from the master chip
The EDID information is read in unit, by the EDID information Stores to the memory, wherein, the EDID information is deposited
Store up and specifically include in the memory：
Judge whether the EDID information is effective；
If so, then by the EDID information Stores to the memory；
If it is not, then returning to the control master chip reads the EDID information, and storage is deposited the second of the master chip
In storage unit, the EDID information Steps are read from the second memory cell of the master chip, until the EDID information has
Default reading times are imitated or reached, is terminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611250307.2A CN106791555A (en) | 2016-12-29 | 2016-12-29 | A kind of single netting twine extender of data transmission method, HDMI signals |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611250307.2A CN106791555A (en) | 2016-12-29 | 2016-12-29 | A kind of single netting twine extender of data transmission method, HDMI signals |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089084A (en) * | 2018-09-20 | 2018-12-25 | 北京计算机技术及应用研究所 | Video line transmits online data and extracts and stealthy storage control device and its working method |
| CN110737419A (en) * | 2019-10-24 | 2020-01-31 | 深圳市杰和科技发展有限公司 | External display device identification data reading system and method |
| CN111787359A (en) * | 2020-07-30 | 2020-10-16 | 深圳市东明炬创电子有限公司 | 4K coder-decoder of IP stream media |
| CN113473055A (en) * | 2021-06-16 | 2021-10-01 | 深圳市龙境科技有限公司 | Signal transmission control method, microprocessor, and computer-readable storage medium |
| CN113612954A (en) * | 2021-07-14 | 2021-11-05 | 长芯盛（武汉）科技有限公司 | High-definition video signal line supporting remote transmission |
| CN113992988A (en) * | 2018-08-06 | 2022-01-28 | 海信视像科技股份有限公司 | EDID data rewriting method and display device |
| CN113473055B (en) * | 2021-06-16 | 2024-10-22 | 深圳市龙境科技有限公司 | Signal transmission control method, microprocessor and computer readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202423784U (en) * | 2012-01-20 | 2012-09-05 | 北京凯新创达科技发展有限公司 | High definition multimedia interface (HDMI) and super single-network-cable extender for control signals |
| CN103219625A (en) * | 2012-01-20 | 2013-07-24 | 北京凯新创达科技发展有限公司 | HDMI and control signal super single network cable extender |
| US20140211095A1 (en) * | 2013-01-28 | 2014-07-31 | Adder Technology Limited | Digital video and data transmission |
| CN203984559U (en) * | 2014-04-09 | 2014-12-03 | 深圳市汉科电子有限公司 | HDMI extender launch terminal, receiving terminal and extender transmission system |
| CN105045741A (en) * | 2015-06-22 | 2015-11-11 | 中航光电科技股份有限公司 | DVI optical transceiver and EDID information processing method for same |
| CN105657315A (en) * | 2015-12-29 | 2016-06-08 | 龙迅半导体（合肥）股份有限公司 | Data transmission method and device, and HDMI single cable extender |
-
2016
- 2016-12-29 CN CN201611250307.2A patent/CN106791555A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202423784U (en) * | 2012-01-20 | 2012-09-05 | 北京凯新创达科技发展有限公司 | High definition multimedia interface (HDMI) and super single-network-cable extender for control signals |
| CN103219625A (en) * | 2012-01-20 | 2013-07-24 | 北京凯新创达科技发展有限公司 | HDMI and control signal super single network cable extender |
| US20140211095A1 (en) * | 2013-01-28 | 2014-07-31 | Adder Technology Limited | Digital video and data transmission |
| CN203984559U (en) * | 2014-04-09 | 2014-12-03 | 深圳市汉科电子有限公司 | HDMI extender launch terminal, receiving terminal and extender transmission system |
| CN105045741A (en) * | 2015-06-22 | 2015-11-11 | 中航光电科技股份有限公司 | DVI optical transceiver and EDID information processing method for same |
| CN105657315A (en) * | 2015-12-29 | 2016-06-08 | 龙迅半导体（合肥）股份有限公司 | Data transmission method and device, and HDMI single cable extender |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113992988A (en) * | 2018-08-06 | 2022-01-28 | 海信视像科技股份有限公司 | EDID data rewriting method and display device |
| CN109089084A (en) * | 2018-09-20 | 2018-12-25 | 北京计算机技术及应用研究所 | Video line transmits online data and extracts and stealthy storage control device and its working method |
| CN109089084B (en) * | 2018-09-20 | 2020-06-02 | 北京计算机技术及应用研究所 | Video line transmission data online extraction and invisible storage control device and working method thereof |
| CN110737419A (en) * | 2019-10-24 | 2020-01-31 | 深圳市杰和科技发展有限公司 | External display device identification data reading system and method |
| CN111787359A (en) * | 2020-07-30 | 2020-10-16 | 深圳市东明炬创电子有限公司 | 4K coder-decoder of IP stream media |
| CN113473055A (en) * | 2021-06-16 | 2021-10-01 | 深圳市龙境科技有限公司 | Signal transmission control method, microprocessor, and computer-readable storage medium |
| CN113473055B (en) * | 2021-06-16 | 2024-10-22 | 深圳市龙境科技有限公司 | Signal transmission control method, microprocessor and computer readable storage medium |
| CN113612954A (en) * | 2021-07-14 | 2021-11-05 | 长芯盛（武汉）科技有限公司 | High-definition video signal line supporting remote transmission |
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