CN102932620B - Television set and the method automatically identifying MHL signal thereof - Google Patents
Television set and the method automatically identifying MHL signal thereof Download PDFInfo
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- CN102932620B CN102932620B CN201210450507.8A CN201210450507A CN102932620B CN 102932620 B CN102932620 B CN 102932620B CN 201210450507 A CN201210450507 A CN 201210450507A CN 102932620 B CN102932620 B CN 102932620B
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- signal
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- mhl
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Abstract
The invention provides a kind of television set and the method automatically identifying MHL signal thereof, the method comprises the following steps: gather the level of the 18th pin of HDMI；Judge whether the level of described 18th pin changes in Preset Time, the most then current demand signal is identified as MHL signal.By gathering the level of the 18th pin of HDMI, and judge whether the level of described 18th pin changes in Preset Time, if, then current demand signal is identified as MHL signal, this MHL signal is identified by user and selects the technical scheme of switching by hinge structure, The present invention reduces the identification operation of user, it is achieved that automatization, improve the Experience Degree of user.
Description
Technical field
The present invention relates to blipology field, be related specifically to a kind of television set and automatically identify
The method of MHL signal.
Background technology
Universal along with smart mobile phone and some mobile devices, increasing mobile device possesses output
The function of MHL signal, MHL signal by standard HDMI input interface is after a bars cable
Can be presented on HDTV.It has used existing Micro USB interface, whether mobile phone
, digital camera, digital camera and portable media player, all can be by complete matchmaker
Internal appearance is transmitted directly on TV and does not damage the high-resolution effect of film.
When MHL signal is accessed TV by user, television set itself can not identify this MHL signal, user
After identifying this MHL signal type, manually MHL signal is switched to the HDMI signal of standard, this
Operate complex for certain customers, the problem bringing inconvenient operation.
Summary of the invention
The main object of the present invention there is provided the method that television set identifies MHL signal automatically, it is intended to realizes
Automatization, improves user experience.
The embodiment of the invention discloses a kind of method that television set identifies MHL signal automatically, including following step
Rapid:
Gather the level of the 18th pin of HDMI；
Judge whether the level of described 18th pin changes in Preset Time, the most then ought
Front signal is identified as MHL signal.
Preferably, the concrete steps of the level of the 18th pin of described collection HDMI include:
The analog level of the 18th pin of HDMI is converted into digital level；
The digital level of record preset group number.
Preferably, whether the described level judging described 18th pin changes in Preset Time,
If
It is that the concrete steps that current demand signal is then identified as MHL signal include:
Judge that each group digital level recorded is the most consistent, if it is not, then variable FLAG is put 1；
Judge whether the value of described variable FLAG changes in Preset Time, if it is not, then will be current
Signal is identified as MHL signal.
Preferably, described television set identifies that the method for MHL signal also includes the current M that will be identified automatically
HL signal type shows the step on screen.
Preferably, described television set identifies that the method for MHL signal is additionally included in current demand signal automatically is MHL
During signal, MHL signal is switched to the step of HDMI signal.
The invention also discloses the television set of a kind of automatic identification MHL signal, including:
Level acquisition module, for gathering the level of the 18th pin of HDMI；
Identification module, for judging whether the level of described 18th pin changes in Preset Time
, the most then current demand signal is identified as MHL signal.
Preferably, described level acquisition module includes:
AD conversion unit, for being converted into numeral electricity by the analog level of the 18th pin of HDMI
Flat；
Memory element, for recording the digital level of preset group number.
Preferably, described identification module includes:
First judge module, the most consistent, if not for judging each group digital level recorded
, then variable FLAG is put 1；
Second judge module, for judging whether the value of described variable FLAG becomes in Preset Time
Change, if it is not, then current demand signal to be identified as MHL signal.
Preferably, the television set of described automatic identification MHL signal also includes display module, for being known
Other current MHL signal type shows on screen.
Preferably, the television set of described automatic identification MHL signal also includes handover module, at current demand signal
During for MHL signal, for MHL signal is switched to HDMI signal.
Television set disclosed in this invention identifies the method for MHL signal automatically, by gathering HDMI
The level of the 18th pin, and judge whether the level of described 18th pin occurs in Preset Time
Change, the most then be identified as current demand signal MHL signal, pass through user in hinge structure
Right
This MHL signal is identified and selects the technical scheme of switching, The present invention reduces the identification of user
Operation, it is achieved that automatization, improves the Experience Degree of user.
Accompanying drawing explanation
Fig. 1 is the flow process signal that television set of the present invention identifies method first embodiment of MHL signal automatically
Figure；
Fig. 2 is the flow process signal that television set of the present invention identifies method second embodiment of MHL signal automatically
Figure；
Fig. 3 is the structured flowchart that the present invention identifies television set first embodiment of MHL signal automatically；
Fig. 4 is the structured flowchart that the present invention identifies television set second embodiment of MHL signal automatically；
Fig. 5 is the structured flowchart that the present invention identifies television set the 3rd embodiment of MHL signal automatically；
Fig. 6 is the structured flowchart that the present invention identifies television set the 4th embodiment of MHL signal automatically.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings into one
Step explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
The invention discloses a kind of method that television set identifies MHL signal automatically, be this with reference to Fig. 1, Fig. 1
Invention television set identifies the schematic flow sheet of method first embodiment of MHL signal automatically.At this
In embodiment, television set identifies that the method for MHL signal comprises the following steps automatically:
S01, gathers the level of the 18th pin of HDMI.
MHL interface according to standard and the specification of the HDMI of standard, MHL standard mouth makes
With 5 pins, HDMI standard mouth uses 19 pins, at MHL interface and the HD of standard of standard
When MI interface connects, wherein the 1st pin (VBUS) of MHL interface draws with the 18th of HDMI
Foot (+5V) connects, the 9th pin of the 2nd pin (MHL-) of MHL interface and HDMI (
TMDS D0-) connect, the 3rd pin (MHL+) of MHL interface and the 7th pin of HDMI
(TMDS D0+) connects, and the 4th pin (CBUS) of MHL interface draws with the 19th of HDMI
Foot (HPD) connects, the 5th pin (GND) of MHL interface and the 8th pin (G of HDMI
ND)
Connect.
S02, it is judged that whether the level of the 18th pin changes in Preset Time, the most then perform
Step S03, if it is not, then terminate.
S03, is identified as MHL signal by current demand signal.
If the HDMI of the MHL interface of standard and standard connects, then the of the HDMI collected
The level of 18 pins can ceaselessly change；If the HDMI of standard and the HDMI of standard
Connect, then the level of the 18th pin of the HDMI collected always is 5V；Without
Interface is connected to the HDMI of standard, then the level of the 18th pin of the HDMI collected
It is 0.The present invention utilizes above-mentioned level change to identify whether have interface (signal) to be connected to H
DMI interface, and be MHL interface (MHL signal) or HDMI (HDMI signal) connection
To HDMI, first pass through and judge whether the level of the 18th pin becomes in Preset Time
Change, the most then current demand signal is identified as MHL signal, if it is not, the level at the 18th pin is
During 0V, current demand signal is identified as no signal input, will be current when the level of the 18th pin is 5V
Signal is identified as HDMI signal.
Television set disclosed in this invention identifies the method for MHL signal automatically, by gathering HDMI
The level of the 18th pin, and judge whether the level of described 18th pin occurs in Preset Time
Change, the most then be identified as current demand signal MHL signal, pass through user in hinge structure
This MHL signal is identified and selects the technical scheme of switching, The present invention reduces the knowledge of user
Do not operate, it is achieved that automatization, improve the Experience Degree of user.
In a particular embodiment, the concrete steps of the level of the 18th pin of step S01 collection HDMI
Including:
The analog level of the 18th pin of HDMI is converted into digital level；
The digital level of record preset group number.
The analog level of the 18th pin of HDMI is being converted into digital electric by AD conversion unit
After Ping, in Preset Time unit, the digital level of the preset group number being converted to be recorded and deposit
In storage unit.Above-mentioned recording mode can be continuous record, it is also possible to be separated in time
It is further continued for record.
It is method the second embodiment that television set of the present invention identifies MHL signal automatically with reference to Fig. 2, Fig. 2
Schematic flow sheet.Automatically to identify that the method for MHL signal includes following for television set in this embodiment
Step:
S11, is converted into digital level by the analog level of the 18th pin of HDMI.
S12, the digital level of record preset group number.
The analog level of the 18th pin of HDMI is being converted into digital electric by AD conversion unit
After Ping, in Preset Time unit, the digital level of the preset group number being converted to be recorded and deposit
In storage unit.Above-mentioned recording mode can be continuous record, it is also possible to be separated in time
It is further continued for record.
S13, it is judged that each group digital level recorded is the most consistent, if it is not, then perform step S14,
The most then terminate.
S14, puts 1 by variable FLAG.
S15, it is judged that whether the value of variable FLAG changes in Preset Time, if it is not, then perform step
Rapid S16, the most then terminate.
S16, is identified as MHL signal by current demand signal.
Judge whether each group digital level of above-mentioned record changes, if its Changing Pattern and standard
MHL interface and standard HDMI connect time HDMI the 18th pin level change rule
Rule is consistent, then variable FLAG is put 1；It does not changes and during always 5V, then by variable F
LAG sets to 0；It does not changes and during always 0V, then variable FLAG is put 2.
For the impact on judged result that excludes the interference signal, the value of judgment variable FLAG exists further
Whether change in Preset Time, because the time of general MHL signal or HDMI signal stabilization is big
Being about 500ms, so software judges signal N continuous time in a program, (these n times can be transported according to program
The row time and change) stable (time is about 500ms), if variable FLAG more than n times
Value be all constant, just current demand signal is identified as MHL signal, the most just terminates.
In a specific embodiment, television set of the present invention identifies that the method for MHL signal also includes institute automatically
The current MHL signal type identified shows the step on screen, in order to allow user be apparent from
The signal format of oneself input, can realize the switching of signal the most accurately.Such as: if used
Family input is MHL signal, shows MHL Signal the most on the tv screen, if user is defeated
Enter is HDMI signal, shows HDMI Signal the most on the tv screen.
In a specific embodiment, television set of the present invention automatically identify the method for MHL signal be additionally included in work as
When front signal is MHL signal, MHL signal is switched to the step of HDMI signal, not only achieves
Identify the purpose of MHL signal, also achieve the purpose of MHL signal switching HDMI signal simultaneously,
Have great convenience for the user, improve the experience sense of user.
The invention also discloses the television set of a kind of automatic identification MHL signal, be this with reference to Fig. 3, Fig. 3
The structured flowchart of television set first embodiment of bright automatic identification MHL signal.Preferably
In automatically identify that the television set of MHL signal includes level acquisition module 1 and identification module 2, wherein,
Level acquisition module 1, for gathering the level of the 18th pin of HDMI；Identification module 2,
For judging whether the level of described 18th pin changes, the most then in Preset Time
Current demand signal is identified as MHL signal.
MHL interface according to standard and the specification of the HDMI of standard, MHL standard mouth makes
With 5 pins, HDMI standard mouth uses 19 pins, at MHL interface and the HD of standard of standard
When MI interface connects, wherein the 1st pin (VBUS) of MHL interface draws with the 18th of HDMI
Foot (+5V) connects, the 9th pin of the 2nd pin (MHL-) of MHL interface and HDMI (
TMDS D0-) connect, the 3rd pin (MHL+) of MHL interface and the 7th pin of HDMI
(TMDS D0+) connects, and the 4th pin (CBUS) of MHL interface draws with the 19th of HDMI
Foot (HPD) connects, the 5th pin (GND) of MHL interface and the 8th pin (G of HDMI
ND) connect.
If the HDMI of the MHL interface of standard and standard connects, then level acquisition module 1 collects
The level of the 18th pin of HDMI can ceaselessly change；If the HDMI of standard and
The HDMI of standard connects, then the 18th pin of the HDMI that level acquisition module 1 collects
Level always be 5V；Be connected to the HDMI of standard without interface, then level is adopted
The level of the 18th pin of the HDMI that collection module 1 collects is 0.The present invention utilizes above-mentioned
Level change identifies whether have interface (signal) to be connected to HDMI, and is MHL interface
(MHL signal) or HDMI (HDMI signal) are connected to HDMI, and by identifying
Module 2 judges whether the level of the 18th pin changes in Preset Time, the most then ought
Front signal is identified as MHL signal, if it is not, known by current demand signal when the level of the 18th pin is 0V
Do not input for no signal, when the level of the 18th pin is 5V, current demand signal is identified as HDMI letter
Number.
The television set of automatic identification MHL signal disclosed in this invention, is gathered by level acquisition module 1
The level of the 18th pin of HDMI, and the electricity of described 18th pin is judged by identification module 2
Put down and whether change in Preset Time, the most then current demand signal is identified as MHL signal,
This MHL signal is identified by user and selects the technical scheme of switching by hinge structure
, The present invention reduces the identification operation of user, it is achieved that automatization, improve the experience of user
Degree.
It is the structure that the present invention identifies television set second embodiment of MHL signal automatically with reference to Fig. 4, Fig. 4
Block diagram.
In a particular embodiment, level acquisition module 1 includes AD conversion unit 11 and memory element 12,
Wherein, AD conversion unit 11, for by the analog level conversion of the 18th pin of HDMI
Become digital level；Memory element 12, for recording the digital level of preset group number.
By AD conversion unit 11, the analog level of the 18th pin of HDMI is being converted into numeral
After level, in Preset Time unit, the digital level of the preset group number being converted to be recorded
In memory element 12.Above-mentioned recording mode can be continuous record, it is also possible to be that interval is certain
Time is further continued for record.
In a particular embodiment, identification module 2 includes the first judge module 21 and the second judge module 22,
Wherein, the first judge module 21, for judging each group digital level of being recorded the most whether
Cause, if it is not, then variable FLAG is put 1；Second judge module 22, is used for judging described variable F
Whether the value of LAG changes in Preset Time, if it is not, then current demand signal is identified as MHL
Signal.
First judge module 21 judges whether each group digital level of above-mentioned record changes, its change
If the 18th of HDMI the draws when rule is connected with the MHL interface of standard and the HDMI of standard
The level Changing Pattern of foot is consistent, then variable FLAG is put 1；It does not changes and always 5
During V, then variable FLAG is set to 0；It does not changes and during always 0V, then by variable FLAG
Put 2.
For the impact on judged result that excludes the interference signal, the second judge module 22 judges further
Whether the value of variable FLAG changes in Preset Time, because general MHL signal or HDMI letter
Number stable time is about 500ms, so software judges that signal N continuous time (should in a program
N times can change according to program runtime) stable (time is about 500ms), if n times
The value of above variable FLAG is all constant, current demand signal is just identified as MHL signal, otherwise
Just terminate.
It is the structure that the present invention identifies television set the 3rd embodiment of MHL signal automatically with reference to Fig. 5, Fig. 5
Block diagram.The present invention identifies that the television set of MHL signal also includes display module 3, display module automatically
3 for showing at screen by the current MHL signal type identified, in order to allows user clearly
Know the signal format oneself inputted, the switching of signal can be realized the most accurately.Such as: as
Really user's input is MHL signal, shows MHL Signal the most on the tv screen, if used
Family input is HDMI signal, shows HDMI Signal the most on the tv screen.
It is the structure that the present invention identifies television set the 4th embodiment of MHL signal automatically with reference to Fig. 6, Fig. 6
Block diagram.The present invention identifies that the television set of MHL signal also includes handover module 4 automatically, at current letter
When number being MHL signal, handover module 4 is for switching to HDMI signal by MHL signal.Switching is set
Module 4 not only achieves the purpose identifying MHL signal, also achieves simultaneously and MHL signal is switched H
The purpose of DMI signal, has great convenience for the user, and improves the experience sense of user.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention
, every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion
, or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the present invention's
In scope of patent protection.
Claims (6)
1. the method that a television set identifies MHL signal automatically, it is characterised in that comprise the following steps:
Gather the level of the 18th pin of HDMI: by the simulation of the 18th pin of HDMI
Level conversion becomes digital level, and the digital level of record preset group number, described preset group number is many groups；
Judge whether the level of described 18th pin changes in Preset Time, the most then will be current
Signal is identified as MHL signal: whether each group of level judging in described preset group digital level respectively
Unanimously, if it is not, then variable FLAG is put 1, it is judged that described corresponding to described preset group digital level
Whether the value of variable FLAG changes in Preset Time, if it is not, be then identified as by current demand signal
MHL signal.
Method the most according to claim 1, it is characterised in that also include current by identified
MHL signal type shows the step on screen.
Method the most according to claim 1, it is characterised in that being additionally included in current demand signal is MHL
During signal, MHL signal is switched to the step of HDMI signal.
4. the television set of an automatic identification MHL signal, it is characterised in that including:
Level acquisition module, for gathering the level of the 18th pin of HDMI；
Identification module, for judging whether the level of described 18th pin changes in Preset Time,
The most then current demand signal is identified as MHL signal；Wherein,
Described level acquisition module includes:
AD conversion unit, for being converted into numeral by the analog level of the 18th pin of HDMI
Level；
Memory element, for recording the digital level of preset group number, described preset group number is many groups；
Described identification module includes:
First judge module, for judging each group of level in described preset group digital level whether respectively
Unanimously, if it is not, then variable FLAG is put 1；
Second judge module, for judging described variable FLAG's corresponding to described preset group number level
Whether value changes in Preset Time, if it is not, current demand signal is then identified as MHL signal.
Television set the most according to claim 4, it is characterised in that also include display module, be used for
The current MHL signal type identified is shown on screen.
Television set the most according to claim 4, it is characterised in that also include handover module, is working as
When front signal is MHL signal, for MHL signal is switched to HDMI signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210450507.8A CN102932620B (en) | 2012-11-12 | 2012-11-12 | Television set and the method automatically identifying MHL signal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450507.8A CN102932620B (en) | 2012-11-12 | 2012-11-12 | Television set and the method automatically identifying MHL signal thereof |
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| Publication Number | Publication Date |
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| CN102932620A CN102932620A (en) | 2013-02-13 |
| CN102932620B true CN102932620B (en) | 2016-12-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533281B (en) * | 2013-09-27 | 2017-01-11 | 广州视源电子科技股份有限公司 | MHL (mobile high-definition link) recognition control circuit with enhanced compatibility |
| CN104301651B (en) * | 2014-09-26 | 2018-03-23 | 四川长虹电器股份有限公司 | Compatible MHL television system and method |
| CN105681781B (en) * | 2015-04-17 | 2018-01-12 | 深圳Tcl数字技术有限公司 | MH L mode detection method and device |
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| CN102256091A (en) * | 2010-05-21 | 2011-11-23 | 索尼公司 | Data transmission device, data reception device, data transmission method, and data reception method |
| CN102572352A (en) * | 2011-12-26 | 2012-07-11 | 中兴通讯股份有限公司 | HDMI multiplexing method, HDMI, and equipped provided with HDMI |
| CN102655580A (en) * | 2011-03-02 | 2012-09-05 | 三星电子株式会社 | Method and apparatus for image processing and power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI446176B (en) * | 2009-10-20 | 2014-07-21 | Wistron Corp | Detection method and detection device and multimedia device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256091A (en) * | 2010-05-21 | 2011-11-23 | 索尼公司 | Data transmission device, data reception device, data transmission method, and data reception method |
| CN102655580A (en) * | 2011-03-02 | 2012-09-05 | 三星电子株式会社 | Method and apparatus for image processing and power supply |
| CN102572352A (en) * | 2011-12-26 | 2012-07-11 | 中兴通讯股份有限公司 | HDMI multiplexing method, HDMI, and equipped provided with HDMI |
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Granted publication date: 20161221 Termination date: 20191112 |