CN104218414B - A kind of electronic installation - Google Patents
A kind of electronic installation Download PDFInfo
- Publication number
- CN104218414B CN104218414B CN201410414709.6A CN201410414709A CN104218414B CN 104218414 B CN104218414 B CN 104218414B CN 201410414709 A CN201410414709 A CN 201410414709A CN 104218414 B CN104218414 B CN 104218414B
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- China
- Prior art keywords
- adapter
- signal
- electronic installation
- resistance
- signal source
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Abstract
The present invention provides a kind of electronic installation, including the first adapter, has the first end and the second end, and under normality, this first end and the second end are connected；Second adapter, has the 3rd end and the 4th end, and under normality, the 3rd end and the 4th end are electrically connected；First resistance, has the 5th end and the 6th end, wherein the 5th end ground connection, and the 6th end is coupled to this second end and the 4th end；Outfan, couples this first end and the 3rd end, for output signal；Wherein, when signal source couples this first adapter, this first end and this second end are transferred to disconnection by connection, and this first adapter is successively via ground connection after this second adapter, this first resistance；When signal source couples this second adapter, the 3rd end and the 4th end are transferred to disconnection by connection, and this second adapter is successively via ground connection after this first adapter, this first resistance.
Description
Technical field
The present invention is about a kind of electronic installation, in particular for the electronic installation of signal input.
Background technology
Due to occur in the market for signal input electronic installation in, be typically provided multiple input
With an outfan, the plurality of input shares an outfan, but because the surface structure of input is identical,
The situation of user wrong plug input usually occurs.It is known that when input and external equipment connection error,
Impedance matching can be caused the most right, cause the too high situation bringing element to burn of signal reference position.Such as, can refer to
Shown in Fig. 1, for the electrical block diagram of existing a kind of electronic installation.As it is shown in figure 1, electronic installation
100 include first socket the 6, second socket 7, resistance 8 and outfan 9.Wherein, the first socket 6 has
There is the first end 61, transmit for signal；Second socket 7 has the 3rd end the 71, the 4th end 72, the 3rd end
71 transmit for signal, and under normality, the 3rd end 71 and the 4th end 72 are electrically connected, and when outward element is inserted
When head is connected with this second socket 7, the 3rd end 71 and the 4th end 72 disconnect；Resistance 8 has
Five end 81 and the 6th ends 82, the 5th end 81 ground connection, the 6th end 82 couples with the 4th end 72 phase；
Outfan 9 processes for output signal to back-end circuit or chip, and outfan 9 respectively with this first end 61,
3rd end 71 phase couples.When outward element plug (such as signal source) inserts this first socket 6, through being somebody's turn to do
First 61, end signal is sent into, then through the 3rd end the 71, the 4th end 72 and this resistance of this second socket 7
After 8, ground connection is to carry out impedance matching, then signal is delivered to outfan 9 processes to carry out back-end circuit or chip,
Now the signal reference position of outfan 9 is the first level；And when user should insert this first socket 6 by mistake
Outward element plug when inserting this second socket 7, because the 3rd end 71 and the 4th end 72 are by electrically connecting
Transfer disconnection to, so that this resistance 8 is in open-circuit condition, it is impossible to carry out impedance matching, now this output
The signal reference position of end 9 is the second level.As known from the above, the second level more than the first level and is the first standard
2 times of position, so, can make signal reference position too high damage element.
Therefore, it is necessary to design a kind of novel electronic installation, to avoid the occurrence of above-mentioned situation, it is to avoid element
Damage.
Summary of the invention
It is an object of the invention to provide a kind of electronic installation, it has preferable element protection function.
For reaching above-mentioned purpose, the present invention provides a kind of electronic installation, including
First adapter, has the first end and the second end, and under normality, this first end and the second end are electrically connected；
Second adapter, has the 3rd end and the 4th end, and under normality, the 3rd end and the 4th end are electrically connected；
First resistance, has the 5th end and the 6th end, wherein the 5th end ground connection, and the 6th end is coupled to
This second end and the 4th end, for impedance matching；
Outfan, couples this first end and the 3rd end, for output signal；
Wherein, when signal source couples this first adapter, this first end and this second end are switched through by being electrically connected
For disconnecting, this first adapter is successively via ground connection, this outfan after this second adapter, this first resistance
Signal reference position be the first signal reference position；
When signal source couples this second adapter, the 3rd end and the 4th end are transferred to disconnection by connection, should
Second adapter is successively via ground connection, the signal reference position of this outfan after this first adapter, this first resistance
It it is the second signal reference position.
It is also preferred that the left the resistance of this first resistance is 75 ohm.
It is also preferred that the left this first adapter is identical with the structure of this second adapter.
It is also preferred that the left this first adapter or this second adapter are videl signal adapter.
It is also preferred that the left this electronic installation is used for coupling this signal source and termination, with by the signal of this signal source
Transmission is to this termination.
It is also preferred that the left this termination is any one of display, television set or Set Top Box.
It is also preferred that the left this first signal reference position is identical with this second signal reference position.
It is also preferred that the left this electronic installation is integrated in display, television set or Set Top Box.
It is also preferred that the left this first adapter or this second adapter have socket, the plug for this signal source connects
Connect.
Compared with prior art, in the present invention, no matter the plug of signal source is to insert the first adapter or second even
Connecing device, the adapter of the connecting signal source of the present invention all can be via passing through the first resistance eutral grounding after another adapter
Carry out impedance matching, so can avoid the output caused because of this first adapter of wrong plug or this second adapter
The signal reference position problems of too of end, it is to avoid element is burned out, and plays a protective role.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing electronic installation.
Fig. 2 is the schematic diagram that electronic installation of the present invention couples signal source and termination.
Fig. 3 is the circuit diagram of electronic installation of the present invention.
Detailed description of the invention
For making the purpose of the present invention, structure, feature and function thereof are had further understanding, hereby coordinate reality
Execute example and describe in detail as follows.
With reference to shown in Fig. 2, Fig. 3, disclose the circuit diagram of a kind of electronic installation of the present invention.Present invention electricity
Sub-device 200, transmits for signal, such as, can be used for connecting signal source 5A and termination 5B, it is achieved
Videl signal or the access of audio signal.Electronic installation 200 of the present invention includes that the first adapter 1, second connects
Device the 2, first resistance 3 and outfan 4, wherein this first adapter 1 or this second adapter 2 are used for coupling
Signal source 5A, this outfan 4 is used for coupling this termination 5B, passes with signal signal source 5A exported
Deliver to this termination 5B.At this it should be noted that signal source 5A typically only accesses this first adapter 1
Or one of them of this second adapter 2.
This first resistance 3 has the 5th end 31 and the 6th end 32, the 5th end 31 ground connection, the 6th end 32
Couple this first adapter 1 and this second adapter 2, and this first resistance 3 plays impedance matching in circuit
Effect.In the present embodiment, the resistance value of this first resistance 3 is about 75 ohm.
First adapter 1, has the first end 11 and the second end 12, (does not access signal source 5A under normality
During plug) this first end 11 and this second end 12 be electrically connected.This first end 11 couples this outfan 4,
This second end 12 couples the 6th end 32 of this first resistance 3.This first adapter 1 can possess socket, for
The joint of signal source inserts and connects, and when the joint of signal source inserts this first adapter 1, this first end
11 separated with this second end 12, this second end 12 is in open-circuit condition.
Second adapter 1, has the 3rd end 21 and the 4th end 22, (does not access signal source 5A under normality
During plug) the 3rd end 21 and the 4th end 22 be electrically connected.3rd end 21 couples this outfan 4,
4th end 22 couples the 6th end 32 of this first resistance 3.This second adapter 2 can possess socket, for
The joint of signal source 5A inserts and connects, and when the joint of signal source 5A inserts this second adapter 2, this is the years old
Three ends 21 electrically connect with the 4th the separated of end 22, and the 4th end 22 is in open-circuit condition.Wherein, should
The structure form of the second adapter 2 can be identical with this first adapter 1, also can be different, according to reality application
Fixed.It is also preferred that the left both may be designed to identical, in order to the coupling of circuit and manufacture.
Wherein, when the joint of this signal source 5A inserts this first adapter 1, this first end 11 and this
Being transferred to disconnection by electrical connection between two ends 12, the signal of this signal source 5A output can be via this first adapter 1
11 signals of this first end send into, be followed by via this second adapter 2, this first resistance 3 the most successively
Ground is to carry out impedance matching, then signal is delivered to outfan 4 and by this outfan 4 to this termination 5B
To carry out back-end circuit or chip process.That is, when the joint of this signal source 5A inserts this first adapter 1
Time, because this second adapter 2 is not connected to signal source 5A, therefore the 3rd end 21 He of this second adapter 2
4th end 22 still keeps electrical connection, is equivalent to a normally closed switch, flows through the first of this first adapter 1
End (heart yearn) signal can successively through the 3rd end the 21, the 4th end 22 of this second adapter 2 and this first
After resistance 3, ground connection carries out impedance matching, is then resent to this outfan 4, the now signal of this outfan 4
Level is the first signal reference position.
And when the plug of signal source inserts this second adapter 2, the signal of this signal source output can be via this
3rd end 21 to the first resistance 3 ground connection of the second adapter 2 is transmitted to this outfan after carrying out impedance matching
4, and by this outfan 4 to this termination 5B, now the signal reference position of this outfan 4 is the second level.
That is, because this first adapter 1 is not connected to signal source, therefore this first end 11 He of this first adapter 1
This second end 12 keeps electrical connection, is equivalent to a normally closed switch so that flow through the news of this second adapter 2
Number can ground connection after first end 11, second end 12 and the first resistance 3 of the first adapter 1 successively, this is first years old
Resistance 3 plays the effect of impedance matching, and now the signal reference position of this outfan 4 is the second signal reference position.
Wherein, as known from the above, no matter this signal source is via this first adapter or via this second company
Connect device and carry out signal transmission, all by the first resistance 3 ground connection, the therefore signal reference position of this outfan 4 all bases
This is identical, i.e. this second signal reference position is equal to this first signal reference position.
To sum up, no matter the plug of signal source is to insert this first adapter 1 or this second adapter 2, the present invention
The adapter of connecting signal source all can carry out impedance via after another adapter by the first resistance 3 ground connection
Join, the signal causing outfan because of this first adapter 1 of wrong plug or this second adapter so can be avoided accurate
Position problems of too, it is to avoid element is burned out, and plays a protective role.
Above-mentioned, electronic installation can individually designed manufacture, and also can be directly embedded into and be designed in termination, its
Realize convenient and cost is the lowest, the needs such as display, television set, Set Top Box, instrument can be widely used in
The place that signal (such as videl signal) inputs.
The present invention is been described by by above-mentioned related embodiment, but above-described embodiment is only and implements the present invention's
Example.It must be noted that, the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, not
The change made in departing from the spirit and scope of the present invention and retouching, all belong to the scope of patent protection of the present invention.
Claims (10)
1. an electronic installation, it is characterised in that include
First adapter, has the first end and the second end, and under normality, this first end and the second end are electrically connected；
Second adapter, has the 3rd end and the 4th end, and under this normality, the 3rd end and the 4th end are electrically connected mutually
Connect；
Outfan, couples this first end and the 3rd end, for output signal；
First resistance, has the 5th end and the 6th end, wherein the 5th end ground connection, and the 6th end is coupled to
This second end and the 4th end, for impedance matching；
Wherein, when signal source couples this first adapter, this first end and this second end are switched through by being electrically connected
For disconnecting, this first adapter is successively via ground connection, this outfan after this second adapter, this first resistance
Signal reference position be the first signal reference position；
When signal source couples this second adapter, the 3rd end and the 4th end are transferred to disconnection by connection, should
Second adapter is successively via ground connection, the signal reference position of this outfan after this first adapter, this first resistance
It it is the second signal reference position.
2. electronic installation as claimed in claim 1, it is characterised in that the resistance of this first resistance is 75
Ohm.
3. electronic installation as claimed in claim 1, it is characterised in that this first adapter with this second
The structure of adapter is identical.
4. electronic installation as claimed in claim 1, it is characterised in that this first adapter or this second
Adapter is videl signal adapter.
5. electronic installation as claimed in claim 1, it is characterised in that this electronic installation is used for coupling this
Signal source and termination, to transmit the signal of this signal source to this termination.
6. electronic installation as claimed in claim 5, it is characterised in that this termination be display,
Any one of television set or Set Top Box.
7. electronic installation as claimed in claim 1, it is characterised in that this first signal reference position with this
Two signal reference positions are identical.
8. electronic installation as claimed in claim 1, it is characterised in that this electronic installation is integrated in display
In device, television set or Set Top Box.
9. electronic installation as claimed in claim 1, it is characterised in that this first adapter or this second
Adapter has socket, and the plug for this signal source connects.
10. electronic installation as claimed in claim 1, it is characterised in that refer under this normality this first
Adapter or this second adapter are not connected with signal source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414709.6A CN104218414B (en) | 2014-08-21 | A kind of electronic installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414709.6A CN104218414B (en) | 2014-08-21 | A kind of electronic installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104218414A CN104218414A (en) | 2014-12-17 |
| CN104218414B true CN104218414B (en) | 2017-01-04 |
Family
ID=
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320057A (en) * | 2007-06-08 | 2008-12-10 | 鸿富锦精密工业（深圳）有限公司 | Electric voltage allowance test device |
| EP1742140B1 (en) * | 2005-07-05 | 2011-01-05 | HTC Corporation | Cradle for connecting to portable electronic apparatus |
| CN202421999U (en) * | 2012-02-22 | 2012-09-05 | 昆盈企业股份有限公司 | Peripheral device |
| CN203466911U (en) * | 2013-09-06 | 2014-03-05 | 深圳市海拓达电子技术有限公司 | Radio frequency assembly and intensive radio frequency device |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1742140B1 (en) * | 2005-07-05 | 2011-01-05 | HTC Corporation | Cradle for connecting to portable electronic apparatus |
| CN101320057A (en) * | 2007-06-08 | 2008-12-10 | 鸿富锦精密工业（深圳）有限公司 | Electric voltage allowance test device |
| CN202421999U (en) * | 2012-02-22 | 2012-09-05 | 昆盈企业股份有限公司 | Peripheral device |
| CN203466911U (en) * | 2013-09-06 | 2014-03-05 | 深圳市海拓达电子技术有限公司 | Radio frequency assembly and intensive radio frequency device |
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|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 |