CN107147863A - It is a kind of to reduce the method that high-definition interface is disturbed wireless signal - Google Patents
It is a kind of to reduce the method that high-definition interface is disturbed wireless signal Download PDFInfo
- Publication number
- CN107147863A CN107147863A CN201710428657.1A CN201710428657A CN107147863A CN 107147863 A CN107147863 A CN 107147863A CN 201710428657 A CN201710428657 A CN 201710428657A CN 107147863 A CN107147863 A CN 107147863A
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- China
- Prior art keywords
- definition interface
- signal
- frequency
- interface
- display device
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Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to technical field of semiconductors, more particularly to a kind of method that reduction high-definition interface is disturbed wireless signal, applied to the display device with high-definition interface and wireless module, high-definition interface is exported using differential signal transmission is minimized, wherein, the amplitude for minimizing transmission single-ended signal is 180~380mV；And a kind of display device includes display screen and decoding deck, decoding deck is connected by a high-definition interface with display screen, the method that high-definition interface is disturbed wireless signal using reduction high-definition interface as above；Interference of the high-definition interface to wireless signal can be reduced, while not interfering with the compatibility of high-definition interface on the premise of electric property is met.
Description
Technical field
The present invention relates to display mechanics of communication, more particularly to a kind of method that reduction high-definition interface is disturbed wireless signal.
Background technology
HDMI (High Definition Multimedia Interface HDMIs, abbreviation HDMI)
It is a kind of digitized video/COBBAIF technology, is the tailored version digital interface for being adapted to image transmission, it can transmit sound simultaneously
Frequency and signal of video signal, the maximum data transmission speed are 18Gbps.
(Transition-minimized differential signaling minimize differential signal transmission, letter to TMDS
Claim TMDS) it is a kind of to transmit the technology of signal using voltage difference between 2 pins.Transmit data numerical value (" 0 " or " 1 ") by
Voltage positive-negative polarity and size are determined between bipod, i.e., original signal is transmitted on signal, single line to transmit using 2 lines, separately
The signal opposite with original signal is transmitted on single line.So receiving terminal just can be another by allowing the signal on single line to subtract
The mode of signal on root line shields electromagnetic interference, so as to obtain correct signal.
, easily there is system bottom and makes an uproar affected feelings in the higher HDMI of existing transmission rate
In condition, and the equipment with high-definition interface fan-out capability and unlimited function, because times of the working frequency of high-definition interface signal
Frequency can be overlapping with WIFI transmission channels, therefore can have certain interference when high-definition interface signal output to wireless signal.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of method that reduction high-definition interface is disturbed wireless signal, it is applied to
Display device with high-definition interface and wireless module, the high-definition interface is exported using transmission single-ended signal is minimized,
Wherein, the amplitude for minimizing transmission single-ended signal is 180~380mV.
Above-mentioned method, wherein, the refreshing frequency of the high-definition interface is 60 frames/second.
Above-mentioned method, wherein there is provided a signal source of clock, to provide clock signal for the digital display interface.
Above-mentioned method, wherein, the frequency of the clock signal is 27~297MHz.
Above-mentioned method, wherein the signal source of clock is connected there is provided one 40 frequency multiplier circuits, to produce 40 frequency-doubled signals
Frequency.
Above-mentioned method, wherein, the transmission frequency of the wireless module is 2447~2467MHz.
A kind of display device, including display screen and decoding deck, the decoding deck pass through a high-definition interface and the display screen
Connection, wherein, the high-definition interface is using the method that as above any described reduction high-definition interface is disturbed wireless signal.
Above-mentioned display device, wherein, the display device is television set.
Above-mentioned display device, wherein, the display screen of the television set is 4K resolution ratio display screens.
Beneficial effect：Method and display device energy that a kind of reduction high-definition interface proposed by the present invention is disturbed wireless signal
Enough on the premise of electric property is met, interference of the reduction high-definition interface to wireless signal, while not interfering with high-definition interface
Compatibility.
Brief description of the drawings
Oscillogram before the amplitude reduction that Fig. 1 is TMDS in one embodiment of the invention；
Oscillogram after the amplitude reduction that Fig. 2 is TMDS in one embodiment of the invention；
The radiation waveform figure of wireless signal before the amplitude reduction that Fig. 3 is TMDS in one embodiment of the invention；
The radiation waveform figure of wireless signal after the amplitude reduction that Fig. 4 is TMDS in one embodiment of the invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
In a preferred embodiment, it is proposed that a kind of to reduce the method that high-definition interface is disturbed wireless signal, application
In the display device with high-definition interface and wireless module, high-definition interface is exported using transmission single-ended signal is minimized, its
In, the amplitude for minimizing transmission single-ended signal is 180~380mV.
Can will minimize differential signal transmission reduction to reduce high-definition interface to wireless signal in above-mentioned technical proposal
Interference, as shown in Fig. 1 TMDS amplitude reduction before oscillogram, as shown in Fig. 2 TMDS amplitude reduction after
Oscillogram, 380~580mV can be reached before TMDS amplitude reduction, after reduction again between 180~380mV；Such as Fig. 3
Shown be TMDS amplitude reduction before wireless signal radiation waveform figure, as shown in Fig. 4 TMDS amplitude reduction
The radiation waveform figure of wireless signal afterwards, it is seen that between the wireless signal and reduction after TMDS amplitudes are reduced in this case
4db is improved compared to antijamming capability；The output speed of high-definition interface can reach 5.94Gbps.
In a preferred embodiment, the refreshing frequency of high-definition interface can be 60 frames/second.
In a preferred embodiment, a signal source of clock can be provided, to provide clock for digital display interface
Signal.
In above-described embodiment, it is preferable that the frequency of clock signal is 27~297MHz.
In above-described embodiment, it is preferable that one 40 frequency multiplier circuits connection signal source of clock is provided, to produce 40 frequency-doubled signals
Frequency.
In a preferred embodiment, the transmission frequency of wireless module is 2447~2467MHz.
In a preferred embodiment, it is also proposed that a kind of display device, display screen and decoding deck, decoding can be included
Plate is connected by a high-definition interface with display screen, wherein, high-definition interface is using as above any reduction high-definition interface to wireless communication
Number interference method.
In a preferred embodiment, display device can be television set.
In a preferred embodiment, the display screen of television set can be 4K resolution ratio display screens, but this is one kind
It is preferred that situation, be not construed as limitation of the present invention.
By explanation and accompanying drawing, the exemplary embodiments of the specific structure of embodiment are given, based on essence of the invention
God, can also make other conversions.Although foregoing invention proposes existing preferred embodiment, however, these contents are not intended as
Limitation.
For a person skilled in the art, read after described above, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard whole variations and modifications of the true intention and scope that cover the present invention as.In power
Any and all scope and content of equal value, are all considered as still belonging to the intent and scope of the invention in the range of sharp claim.
Claims (9)
1. a kind of reduce the method that high-definition interface is disturbed wireless signal, applied to the display with high-definition interface and wireless module
Device, the high-definition interface is exported using transmission single-ended signal is minimized, it is characterised in that the minimum transmission is single-ended
The amplitude of signal is 180~380mV.
2. according to the method described in claim 1, it is characterised in that the refreshing frequency of the high-definition interface is 60 frames/second.
3. according to the method described in claim 1, it is characterised in that provide a signal source of clock, to for the numerical monitor
Interface provides clock signal.
4. method according to claim 3, it is characterised in that the frequency of the clock signal is 27~297MHz.
5. method according to claim 3, it is characterised in that one 40 frequency multiplier circuits are provided and connect the signal source of clock,
To produce 40 frequency-doubled signal frequencies.
6. according to the method described in claim 1, it is characterised in that the transmission frequency of the wireless module is 2447~
2467MHz。
7. a kind of display device, including display screen and decoding deck, the decoding deck are connected by a high-definition interface and the display screen
Connect, it is characterised in that the high-definition interface is using the reduction high-definition interface as described in any in claim 1-6 to wireless signal
The method of interference.
8. display device according to claim 7, it is characterised in that the display device is television set.
9. display device according to claim 7, it is characterised in that the display screen of the television set is that 4K resolution ratio is shown
Screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428657.1A CN107147863A (en) | 2017-06-08 | 2017-06-08 | It is a kind of to reduce the method that high-definition interface is disturbed wireless signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428657.1A CN107147863A (en) | 2017-06-08 | 2017-06-08 | It is a kind of to reduce the method that high-definition interface is disturbed wireless signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107147863A true CN107147863A (en) | 2017-09-08 |
Family
ID=59781114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710428657.1A Pending CN107147863A (en) | 2017-06-08 | 2017-06-08 | It is a kind of to reduce the method that high-definition interface is disturbed wireless signal |
Country Status (1)
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| CN (1) | CN107147863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804479A (en) * | 2021-04-13 | 2021-05-14 | 浙江华创视讯科技有限公司 | Data transmission method, device and storage medium |
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|---|---|---|---|---|
| CN1581057A (en) * | 2004-05-21 | 2005-02-16 | 中国科学院计算技术研究所 | Long-distance video pattern array signal transmission device |
| CN101207766A (en) * | 2006-12-22 | 2008-06-25 | 普诚科技股份有限公司 | Method and apparatus for judging audio-visual data time sequence of high-density multimedia interface |
| CN101365130A (en) * | 2007-08-08 | 2009-02-11 | 联咏科技股份有限公司 | Clock and data codependent high transmission rate interface |
| CN101364960A (en) * | 2008-07-08 | 2009-02-11 | 华亚微电子（上海）有限公司 | High-speed differential interface |
| CN102301831A (en) * | 2009-01-29 | 2011-12-28 | 松下电器产业株式会社 | Differential transmission circuit and electronic device provided with the same |
| CN202872963U (en) * | 2012-10-22 | 2013-04-10 | 深圳市航盛电子股份有限公司 | Differential motion transmission system for vehicle-mounted composite video signal |
-
2017
- 2017-06-08 CN CN201710428657.1A patent/CN107147863A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581057A (en) * | 2004-05-21 | 2005-02-16 | 中国科学院计算技术研究所 | Long-distance video pattern array signal transmission device |
| CN101207766A (en) * | 2006-12-22 | 2008-06-25 | 普诚科技股份有限公司 | Method and apparatus for judging audio-visual data time sequence of high-density multimedia interface |
| CN101365130A (en) * | 2007-08-08 | 2009-02-11 | 联咏科技股份有限公司 | Clock and data codependent high transmission rate interface |
| CN101364960A (en) * | 2008-07-08 | 2009-02-11 | 华亚微电子（上海）有限公司 | High-speed differential interface |
| CN102301831A (en) * | 2009-01-29 | 2011-12-28 | 松下电器产业株式会社 | Differential transmission circuit and electronic device provided with the same |
| CN202872963U (en) * | 2012-10-22 | 2013-04-10 | 深圳市航盛电子股份有限公司 | Differential motion transmission system for vehicle-mounted composite video signal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804479A (en) * | 2021-04-13 | 2021-05-14 | 浙江华创视讯科技有限公司 | Data transmission method, device and storage medium |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170908 |