CN109547725A - HDMI signal delayer and application method - Google Patents
HDMI signal delayer and application method Download PDFInfo
- Publication number
- CN109547725A CN109547725A CN201910030802.XA CN201910030802A CN109547725A CN 109547725 A CN109547725 A CN 109547725A CN 201910030802 A CN201910030802 A CN 201910030802A CN 109547725 A CN109547725 A CN 109547725A
- Authority
- CN
- China
- Prior art keywords
- hdmi signal
- hdmi
- extender
- signal
- input terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
Abstract
The present invention relates to a kind of HDMI signal delayer and application methods, including HDMI signal input terminal, HDMI signal output terminal, HDMI signal distribution unit, LCD driving unit, first signal output end of HDMI signal distribution unit connects LCD driving unit, the second signal output termination HDMI signal output terminal of HDMI signal distribution unit；The signal input part of HDMI signal distribution unit connects HDMI signal input terminal；It is connected step by step between each HDMI signal extender, the HDMI signal input terminal of the same level HDMI signal extender connects the HDMI signal output terminal of level-one HDMI signal extender, and the HDMI signal output terminal of the same level HDMI signal extender connects the HDMI signal input terminal of next stage HDMI signal extender.The present invention can be achieved HDMI signal and transmit at a distance, drive more display equipment by single signal source.
Description
Technical field
The present invention relates to a kind of HDMI signal delayer and application methods.
Background technique
HDMI, high-definition multimedia interface (High Definition Multimedia Interface) are a kind of complete
Digitisation image and sound transmit interface, can transmit the audio signal and vision signal of no compression.Just because of this more matchmakers
The multiple superiority of body interface, more and more equipment all use this interface.At present HDMI interface application be mostly signal source with
The point-to-point connection for showing equipment just has certain limitation when needing the same video content of multiple devices simultaneous display
Property.There are many ways to realizing multiple devices simultaneous display at present can be used the one-to-one driving display of multiple signal sources and set
It is standby, but this method is difficult to being played simultaneously for video, and need using multiple signal sources, it is cumbersome and waste.It is another
Kind method is that HDMI video signal is converted to network signal to carry out streaming media playing, because HDMI signal is high-definition signal, institute
To be converted directly into network signal, then requirement with higher for network bandwidth, high expensive turn again if first being compressed
Being changed to network signal, then video effect can be deteriorated, and will cause to the encoding-decoding process of video in network transmission and be difficult to reality
The problem of existing simultaneous display.
Summary of the invention
Goal of the invention of the invention is to provide a kind of HDMI signal delayer and application method, it can be achieved that HDMI signal is remote
Distance Transmission drives more display equipment by single signal source.
Based on the same inventive concept, there are two independent technical solutions for present invention tool:
1, a kind of HDMI signal extender, including HDMI signal input terminal, it is characterised in that: further include that HDMI signal is defeated
Terminal, HDMI signal distribution unit, LCD driving unit out, the first signal output end of HDMI signal distribution unit connect LCD driving
Unit, the second signal output termination HDMI signal output terminal of HDMI signal distribution unit；The letter of HDMI signal distribution unit
Number input termination HDMI signal input terminal.
Further, balanced mend is equipped between the signal input part of HDMI signal distribution unit and HDMI signal input terminal
Repay unit.
Further, passive bypass unit, institute are equipped between HDMI signal input terminal and HDMI signal output terminal
It states passive bapass unit to be used for when the power supply of HDMI signal delayer device non-transformer, HDMI signal input terminal and HDMI signal
Output terminal is directly connected to.
2, a kind of application method of HDMI signal extender, it is characterised in that: extend including multiple above-mentioned HDMI signals
Device is connected step by step between each HDMI signal extender, and the HDMI signal input terminal of the same level HDMI signal extender connects level-one
The HDMI signal output terminal of the HDMI signal output terminal of HDMI signal extender, the same level HDMI signal extender connects next stage
The HDMI signal input terminal of HDMI signal extender.
Further, in each HDMI signal extender, HDMI signal, which is input to HDMI through HDMI signal input terminal, to be believed
The first via HDMI signal of number allocation unit, the output of HDMI signal distribution unit is converted into LVDS signal, institute through LCD driving unit
The LVDS signal stated is supplied to display unit and is shown；Second road HDMI signal of HDMI signal distribution unit output is through HDMI
Signal output terminal is exported to next stage HDMI signal extender.
Further, in each HDMI signal extender, between HDMI signal input terminal and HDMI signal output terminal
Equipped with passive bypass unit, when HDMI signal extender non-transformer is powered, the HDMI signal input part of HDMI signal extender
Son is directly connected to HDMI signal output terminal.
The invention has the benefit that
HDMI signal extender of the present invention includes HDMI signal input terminal, HDMI signal output terminal, HDMI signal point
With unit, LCD driving unit, the first signal output end of HDMI signal distribution unit connects LCD driving unit, the distribution of HDMI signal
The second signal output termination HDMI signal output terminal of unit；The signal input part of HDMI signal distribution unit connects HDMI signal
Input terminal.The present invention realizes that HDMI signal is remotely connected, by HDMI by multiple HDMI signal extenders connection (cascade)
Signal is increased to 50 meters to 60 meters without the transmission range of compression.Each HDMI signal extender can external connection display equipment, i.e., in fact
Existing single signal source drives more display equipment, effectively solves the problems, such as that more display device signals are asynchronous in the prior art, phase
Than in the cable extender of the prior art, HDMI signal extender of the present invention realizes passing without compression source signal for HDMI signal
Defeated, moreover, can be realized between signal extender of the present invention by universal shield twisted pair, alternative special HDMI interface is passed
Defeated line, effectively reduces cost.
Detailed description of the invention
Fig. 1 is the circuit diagram of HDMI signal delayer of the present invention；
Fig. 2 is HDMI signal delayer connection status diagram of the present invention.
Specific embodiment
The present invention is described in detail for each embodiment shown in reference to the accompanying drawing, but it should be stated that, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method,
Or equivalent transformation or substitution in structure, all belong to the scope of protection of the present invention within.
Embodiment one:
HDMI signal delayer
As shown in Figure 1, HDMI signal delayer includes HDMI signal input terminal DB9-1, HDMI signal output terminal
DB9-2, HDMI signal distribution unit, LCD driving unit, the first signal output end of HDMI signal distribution unit connect LCD driving
Unit, the second signal output termination HDMI signal output terminal DB9-2 of HDMI signal distribution unit；HDMI signal distribution unit
Signal input part meet HDMI signal input terminal DB9-1.The HDMI signal distribution unit solves the problems, such as the cascade of signal,
HDMI signal can not only be transmitted to display equipment, and this signal can be transferred to next stage.The LCD driving unit can incite somebody to action
HDMI signal is converted into LVDS signal, and connects display equipment by LVDS interface, and solving display screen does not have HDMI interface, and thinks
The problem of realizing high resolution audio and video simultaneous transmission.
Isostatic compensation unit, institute are equipped between the signal input part and HDMI signal input terminal of HDMI signal distribution unit
It is straightforward by the one of the balanced raising signal sequence of the HDMI signal progress signal of input to state isostatic compensation unit, and signal is subject to
Compensation solves attenuation problem of the signal in transmission process, and uses low-power chip, golf calorific value core different from the past
Piece increases the service life of device.
Passive bypass unit 101 is equipped between HDMI signal input terminal and HDMI signal output terminal, it is described passive
Bapass unit is used for when the power supply of HDMI signal delayer device non-transformer, HDMI signal input terminal DB9-1 and HDMI signal
Output terminal DB9-2 is directly connected to.
Embodiment two:
The manufacturing method of HDMI signal delayer
Including multiple above-mentioned HDMI signal extenders, connected step by step between each HDMI signal extender.As shown in Fig. 2,
The HDMI signal input terminal of the same level HDMI signal extender connects the HDMI signal output terminal of level-one HDMI signal extender,
The HDMI signal output terminal of the same level HDMI signal extender connects the HDMI signal input terminal of next stage HDMI signal extender.
In each HDMI signal extender, HDMI signal is input to HDMI signal distribution list through HDMI signal input terminal
The first via HDMI signal of member, the output of HDMI signal distribution unit is converted into LVDS signal, the LVDS through LCD driving unit
Signal is supplied to display unit and is shown；Second road HDMI signal of HDMI signal distribution unit output is exported through HDMI signal
Terminal is exported to next stage HDMI signal extender.In each HDMI signal extender, HDMI signal input terminal and HDMI letter
Passive bypass unit is equipped between number output terminal, when HDMI signal extender non-transformer is powered, HDMI signal extender
HDMI signal input terminal is directly connected to HDMI signal output terminal.When implementation, pass through between two HDMI signal extenders
Common Shielded Twisted Pair 102 connects, and wire length is in 50 meters.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
Claims (6)
1. a kind of HDMI signal extender, including HDMI signal input terminal, it is characterised in that: further include HDMI signal output end
Son, HDMI signal distribution unit, LCD driving unit, it is single that the first signal output end of HDMI signal distribution unit connects LCD driving
Member, the second signal output termination HDMI signal output terminal of HDMI signal distribution unit；The signal of HDMI signal distribution unit
Input termination HDMI signal input terminal.
2. HDMI signal extender according to claim 1, it is characterised in that: the signal of HDMI signal distribution unit inputs
Isostatic compensation unit is equipped between end and HDMI signal input terminal.
3. HDMI signal extender according to claim 2, it is characterised in that: HDMI signal input terminal and HDMI signal
Passive bypass unit is equipped between output terminal, the passive bapass unit is used to work as HDMI signal delayer device non-transformer
When power supply, HDMI signal input terminal is directly connected to HDMI signal output terminal.
4. a kind of application method of HDMI signal extender, it is characterised in that: including multiple HDMI of any of claims 1 or 2
Signal extender connects between each HDMI signal extender, the HDMI signal input terminal of the same level HDMI signal extender step by step
Connect the HDMI signal output terminal of level-one HDMI signal extender, the HDMI signal output terminal of the same level HDMI signal extender
Connect the HDMI signal input terminal of next stage HDMI signal extender.
5. according to the method described in claim 4, it is characterized by: HDMI signal is through HDMI in each HDMI signal extender
Signal input terminal is input to HDMI signal distribution unit, and the first via HDMI signal of HDMI signal distribution unit output is through LCD
Driving unit is converted into LVDS signal, and the LVDS signal is supplied to display unit and is shown；HDMI signal distribution unit
Second road HDMI signal of output is exported through HDMI signal output terminal to next stage HDMI signal extender.
6. according to the method described in claim 5, it is characterized by: in each HDMI signal extender, HDMI signal input part
Passive bypass unit is equipped between son and HDMI signal output terminal, when HDMI signal extender non-transformer is powered, HDMI letter
The HDMI signal input terminal of number extender is directly connected to HDMI signal output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910030802.XA CN109547725A (en) | 2019-01-14 | 2019-01-14 | HDMI signal delayer and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910030802.XA CN109547725A (en) | 2019-01-14 | 2019-01-14 | HDMI signal delayer and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109547725A true CN109547725A (en) | 2019-03-29 |
Family
ID=65835300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910030802.XA Pending CN109547725A (en) | 2019-01-14 | 2019-01-14 | HDMI signal delayer and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109547725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526431A (en) * | 2020-04-20 | 2020-08-11 | 北京甲骨今声科技有限公司 | Equipment for adding captions to video and audio programs in real time |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080007616A1 (en) * | 2004-12-06 | 2008-01-10 | Ftd Technology Pte. Ltd. | Universal multimedia display adapter |
| CN207869241U (en) * | 2017-09-20 | 2018-09-14 | 浙江大华技术股份有限公司 | A kind of mosaic screen and splicing screen system |
| CN212064205U (en) * | 2019-01-14 | 2020-12-01 | 北京中电慧视科技有限公司 | HDMI signal extender |
-
2019
- 2019-01-14 CN CN201910030802.XA patent/CN109547725A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080007616A1 (en) * | 2004-12-06 | 2008-01-10 | Ftd Technology Pte. Ltd. | Universal multimedia display adapter |
| CN207869241U (en) * | 2017-09-20 | 2018-09-14 | 浙江大华技术股份有限公司 | A kind of mosaic screen and splicing screen system |
| CN212064205U (en) * | 2019-01-14 | 2020-12-01 | 北京中电慧视科技有限公司 | HDMI signal extender |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526431A (en) * | 2020-04-20 | 2020-08-11 | 北京甲骨今声科技有限公司 | Equipment for adding captions to video and audio programs in real time |
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