CN209402630U - A kind of HDMI signal repeater - Google Patents
A kind of HDMI signal repeater Download PDFInfo
- Publication number
- CN209402630U CN209402630U CN201920356984.5U CN201920356984U CN209402630U CN 209402630 U CN209402630 U CN 209402630U CN 201920356984 U CN201920356984 U CN 201920356984U CN 209402630 U CN209402630 U CN 209402630U
- Authority
- CN
- China
- Prior art keywords
- power
- capacitor
- output end
- input
- hdmi signal
- 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.)
- Active
Links
Abstract
A kind of HDMI signal repeater, including input port, output port, main control chip, MCU and control button, the model MN86911X of the main control chip；Input port, output port and MCU are electrically connected with main control chip respectively, respectively constitute input channel and output channel between input port, output port and main control chip；The control button is electrically connected with MCU, the signaling that control button is used to that MCU to be made to generate adjustment resolution ratio；The main control chip is used to receive the HDMI signal of input port input and exports from output port, or modifies the resolution ratio of the HDMI signal inputted from input port and export from output port.Due to making MCU issue the signaling of adjustment resolution ratio by control button, so that master control chip is modified the resolution ratio of HDMI according to signaling, shown with matching display equipment, to enhance the compatibility performance of signal repeater.
Description
Technical field
This application involves HDMI signal handling equipments, and in particular to a kind of HDMI signal repeater.
Background technique
There are different resolution ratio, signals to be transported to display equipment by route after signal source output for HDMI signal, when
When the resolution ratio that signal source issues the resolution ratio of signal and display equipment is supported mismatches, then will lead to display equipment cannot be normal
Display.
Summary of the invention
The application provides a kind of HDMI signal repeater of adjustable signal resolution.
According in a first aspect, providing a kind of HDMI signal repeater in a kind of embodiment, which is characterized in that including input terminal
Mouth, output port, main control chip, MCU and control button, the model MN86911X of the main control chip；It is input port, defeated
Exit port and MCU are electrically connected with main control chip respectively, are respectively constituted between input port, output port and main control chip defeated
Enter channel and output channel；The control button is electrically connected with MCU, the letter that control button is used to that MCU to be made to generate adjustment resolution ratio
It enables；The main control chip is used to receive the HDMI signal of input port input and exports from output port, or modifies from input
The resolution ratio of the HDMI signal of port input is simultaneously exported from output port.
Preferably, the model STM32F03 of the MCU.
It preferably, further include second source conversion circuit, for 5V power supply to be converted to work of the 1.2V as main control chip
Make power supply.
Preferably, the second source conversion circuit includes the second DC-DC power source chip and peripheral circuit, second source
The input terminal of conversion circuit is connect with 5V power input, and the output end and 1.2V power output end of second source conversion circuit connect
It connects；The peripheral circuit includes a pair of magnetic bead being connected in parallel, the 6th capacitor and the 4th resistance that are connected in parallel, this is to magnetic bead
One end is connect with 5V power input, and the other end is connect with the input terminal of the second DC-DC power source chip, the second DC-DC power source core
First output end of piece is connect by an inductance with 1.2V power output end；The second output terminal of second DC-DC power source chip is logical
One the 7th capacitor is crossed to connect with the first output end of the second DC-DC power source chip；The third output end of second DC-DC power source chip
It is connect by the 6th capacitor being connected in parallel and the 4th resistance with 1.2V power output end；The 1.2V power output end also passes through
The 8th capacitor, the 9th capacitor, the tenth capacity earth being connected in parallel.
Preferably, one the 6th resistance, the second DC-DC power source core are also connected between 1.2V power output end and inductance
The third output end of piece also passes through one the 5th resistance eutral grounding.
It preferably, further include the first power-switching circuit, for 5V power supply to be converted to 3.3V as the work of MCU electricity
Source.
Preferably, first power-switching circuit includes the first DC-DC power source chip and peripheral circuit, the first power supply
The input terminal of conversion circuit is connect with 5V power input, and the output end and 3.3V power output end of the first power-switching circuit connect
It connects；The peripheral circuit includes the first capacitor being connected in parallel, the second capacitor and the third capacitor being connected in parallel, the 4th electricity
Hold, the first capacitor and second capacitor one end being connected in parallel are connect with 5V power input, other end ground connection；Be connected in parallel
Three capacitors, the 4th capacitor one end are connect with 3.3V power output end, other end ground connection；The 3.3V power output end also passes through one
11st magnetic bead and one the 7th resistance eutral grounding, the 11st magnetic bead and the 7th resistance are connected in series.
Preferably, the input terminal of first power-switching circuit also passes through zener diode ground connection；The periphery electricity
Road further includes a light emitting diode, and light emitting diode and the 11st magnetic bead, the 7th resistance are connected in series.
Preferably, the main control chip is also used to identify the resolution ratio of input HDMI signal, and it is aobvious to give corresponding indicator light
Show.
According to the HDMI signal repeater of above-described embodiment, due to making MCU issue adjustment resolution ratio by control button
Signaling makes master control chip modify the resolution ratio of HDMI according to signaling, is shown with matching display equipment, to enhance HDMI
The compatibility performance of signal repeater.Further, including power-switching circuit, 5V power supply is converted into 3.3V and 1.2V and is supplied respectively
MCU and main control chip work, and MCU and main control chip is made to obtain stable working power, so that HDMI signal relays
Device can be stable work, stability is good.
Detailed description of the invention
Fig. 1 is an embodiment input port circuit diagram；
Fig. 2 is an embodiment main control chip circuit diagram；
Fig. 3-Fig. 6 is the partial enlarged view of Fig. 2；
Fig. 7 is the circuit diagram of MCU；
Fig. 8-Fig. 9 is Fig. 7 partial enlarged view；
Figure 10 is output port circuit figure；
Figure 11 is the circuit diagram of the first power-switching circuit；
Figure 12 is the circuit diagram of second source conversion circuit.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can recognize without lifting an eyebrow, part of feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Please refer to Fig. 1-Figure 10, the application HDMI signal repeater, including input port CON2, output port CON1, master
Chip U11, MCU and control button are controlled, input port CON2 is used for for accessing HDMI signal source, main control chip U11 to defeated
The HDMI entered is handled, such as signal amplification, timing are reformed and the resolution ratio of modification HDMI signal；Output port CON1
For treated HDMI signal to be output to display equipment (such as high-definition television).The model of main control chip
MN86911X；Input port, output port and MCU are electrically connected with main control chip respectively, input port, output port and master
Input channel and output channel are respectively constituted between control chip；The control button is electrically connected with MCU, and control button is for making
MCU generates the signaling of adjustment resolution ratio；The main control chip is used to receive the HDMI signal of input port input and from output end
Mouth output, or modify the resolution ratio of the HDMI signal inputted from input port and exported from output port.
Control button can be resolution ratio switching key, and control button generates high level or low level after artificially being pressed,
After the 26th pin of MCU receives high level or low level, corresponding adjustment resolution ratio is sent to main control chip U11
Signaling, main control chip U11 modify according to resolution ratio of the signaling to HDMI signal, then export and believe from output port CON1
Number.
Certainly, there is also a kind of situation, i.e., the resolution ratio that the resolution ratio of signal source and display equipment are supported matches, then this
When, the switching of resolution ratio is carried out without pressing control button, main control chip directly exports the signal of input from output port.
In a preferred embodiment, the model STM32F03 of MCU.
It illustrates below and the working principle of the application is illustrated.
Assuming that there are two types of signal sources, a kind of resolution ratio of signal source is 1080P, and a kind of resolution ratio of signal source is 4K, is shown
Show that equipment supports 1080P resolution ratio.
When the resolution ratio of the signal source of access is 4K, if converted without the application, not with display equipment
Match, display equipment can not normally be shown.
After accessing the HDMI signal repeater of the application, main control chip judges the signal of access and passes through instruction
Lamp is shown (referring to FIG. 8, light emitting diode D4/D5/D6/D7/D8 is for showing corresponding resolution ratio), and user passes through
After indicator light knows the resolution ratio of input signal source, switching key, the high level or low electricity that MCU is fed back according to switching key are pressed
The signaling that corresponding adjustment resolution ratio is sent to main control chip U11 is equalled, main control chip is modified to the 4K signal of input, repaired
It is changed to the signal that resolution ratio is 1080P, then is exported by output port, shows that equipment can be shown from input port at this time and inputs
HDMI signal.
When the resolution ratio of the signal source of access is 1080P, modification resolution ratio is not needed, output port can be directly passed through
Display equipment is transported to be shown.Do not have to through control button come the resolution ratio of switched input signal.
Figure 11 is please referred to, the application further includes the first power-switching circuit, for 5V power supply to be converted to 3.3V as MCU
Working power.
First power-switching circuit includes the first DC-DC power source chip U1 and peripheral circuit, the first power-switching circuit
The input terminal of U1 is connect with 5V power input, and the output end of the first power-switching circuit is connect with 3.3V power output end；Institute
Stating peripheral circuit includes the first capacitor C1 being connected in parallel, the second capacitor C2 and the third capacitor C3 being connected in parallel, the 4th electricity
The one end for holding C4, the first capacitor C1 being connected in parallel and the second capacitor C2 is connect with 5V power input, other end ground connection；It is in parallel
The third capacitor C3 of connection, the 4th one end capacitor C4 are connect with 3.3V power output end, other end ground connection；3.3V power output end
It is also grounded by 1 the 11st magnetic bead FB11 and one the 7th resistance R7, the 11st magnetic bead FB11 and the 7th resistance R7 are connected in series.
The 5V power supply of access exports 3.3V voltage after the first DC-DC power source chip voltage.In the present embodiment, the first DC-DC power source core
The model AMS1117-3V3 of piece U1.
The input terminal of first power-switching circuit also passes through zener diode ZD1 ground connection；The peripheral circuit further includes
One light emitting diode D1, light emitting diode D1 and the 11st magnetic bead FB11, the 7th resistance R7 are connected in series.
Main control chip is also used to identify the resolution ratio of input HDMI signal, and gives corresponding indicator light and show.
Figure 12 is please referred to, the application further includes second source conversion circuit, for 5V power supply to be converted to 1.2V as master
Control the working power of chip.
Second source conversion circuit includes the second DC-DC power source chip U2 and peripheral circuit, second source conversion circuit
Input terminal connect with 5V power input, the output end of second source conversion circuit is connect with 1.2V power output end；It is described
The 6th capacitor C6 and the 4th resistance that peripheral circuit includes a pair of magnetic bead FB13 being connected in parallel and magnetic bead FB14, is connected in parallel
R4, the one end to magnetic bead are connect with 5V power input, and the other end is connect with the input terminal of the second DC-DC power source chip U2,
First output end of the second DC-DC power source chip is connect by inductance L1 with 1.2V power output end；Second DC-DC power source chip
Second output terminal connect with the first output end of the second DC-DC power source chip by the 7th capacitor C7；Second DC-DC power source core
The third output end of piece passes through the 6th capacitor C6 being connected in parallel and the 4th resistance R4 is connect with 1.2V power output end；It is described
1.2V power output end also passes through the 8th capacitor C8, the 9th capacitor C9, the tenth capacitor the C10 ground connection being connected in parallel.The 5V of access
Power supply exports 1.2V voltage after the second DC-DC power source chip voltage.In the present embodiment, the type of the second DC-DC power source chip U2
Number be MT3410.
One the 6th resistance R6 is also connected between 1.2V power output end and inductance, the second DC-DC power source chip
Third output end also passes through one the 5th resistance R5 ground connection.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (9)
1. a kind of HDMI signal repeater, which is characterized in that including input port, output port, main control chip, MCU and control
Key processed, the model MN86911X of the main control chip；Input port, output port and MCU are electric with main control chip respectively
Property connection, respectively constitute input channel and output channel between input port, output port and main control chip；The control button
It is electrically connected with MCU, the signaling that control button is used to that MCU to be made to generate adjustment resolution ratio；The main control chip is for receiving input terminal
The HDMI signal of mouthful input is simultaneously exported from output port, or the resolution ratio of HDMI signal that is inputted from input port of modification and from
Output port output.
2. HDMI signal repeater as described in claim 1, which is characterized in that the model STM32F03 of the MCU.
3. HDMI signal repeater as described in claim 1, which is characterized in that further include second source conversion circuit, be used for
5V power supply is converted into working power of the 1.2V as main control chip.
4. HDMI signal repeater as claimed in claim 3, which is characterized in that the second source conversion circuit includes second
The input terminal of DC-DC power source chip and peripheral circuit, second source conversion circuit is connect with 5V power input, second source
The output end of conversion circuit is connect with 1.2V power output end；The peripheral circuit includes a pair of magnetic bead being connected in parallel, parallel connection
The 6th capacitor and the 4th resistance of connection, the one end to magnetic bead are connect with 5V power input, and the other end and the 2nd DC-DC are electric
The input terminal of source chip connects, and the first output end of the second DC-DC power source chip is connected by an inductance and 1.2V power output end
It connects；The second output terminal of second DC-DC power source chip passes through the first output end of one the 7th capacitor and the second DC-DC power source chip
Connection；The third output end of second DC-DC power source chip passes through the 6th capacitor being connected in parallel and the 4th resistance and 1.2V power supply
Output end connection；The 1.2V power output end also passes through the 8th capacitor, the 9th capacitor, the tenth capacity earth being connected in parallel.
5. HDMI signal repeater as claimed in claim 4, which is characterized in that also connect between 1.2V power output end and inductance
It is connected to one the 6th resistance, the third output end of the second DC-DC power source chip also passes through one the 5th resistance eutral grounding.
6. HDMI signal repeater as described in claim 1, which is characterized in that further include the first power-switching circuit, be used for
5V power supply is converted into working power of the 3.3V as MCU.
7. HDMI signal repeater as claimed in claim 6, which is characterized in that first power-switching circuit includes first
The input terminal of DC-DC power source chip and peripheral circuit, the first power-switching circuit is connect with 5V power input, the first power supply
The output end of conversion circuit is connect with 3.3V power output end；The peripheral circuit includes the first capacitor being connected in parallel, second
Capacitor and the third capacitor being connected in parallel, the 4th capacitor, the first capacitor being connected in parallel and second capacitor one end and 5V power supply
Input terminal connection, other end ground connection；The third capacitor that is connected in parallel, the 4th capacitor one end are connect with 3.3V power output end, separately
One end ground connection；The 3.3V power output end also passes through 1 the 11st magnetic bead and one the 7th resistance eutral grounding, the 11st magnetic bead and
Seven resistance are connected in series.
8. HDMI signal repeater as claimed in claim 7, which is characterized in that the input terminal of first power-switching circuit
Also it is grounded by a zener diode；The peripheral circuit further includes a light emitting diode, light emitting diode and the 11st magnetic bead,
7th resistance is connected in series.
9. HDMI signal repeater as described in claim 1, which is characterized in that the main control chip is also used to identify input
The resolution ratio of HDMI signal, and give corresponding indicator light and show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356984.5U CN209402630U (en) | 2019-03-20 | 2019-03-20 | A kind of HDMI signal repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356984.5U CN209402630U (en) | 2019-03-20 | 2019-03-20 | A kind of HDMI signal repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209402630U true CN209402630U (en) | 2019-09-17 |
Family
ID=67900007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920356984.5U Active CN209402630U (en) | 2019-03-20 | 2019-03-20 | A kind of HDMI signal repeater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209402630U (en) |
-
2019
- 2019-03-20 CN CN201920356984.5U patent/CN209402630U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20170229051A1 (en) | High-power power supply for use with display devices and associated display device | |
| CN206077012U (en) | A kind of mobile phone charging system | |
| CN106253013A (en) | A kind of adapter | |
| CN209402630U (en) | A kind of HDMI signal repeater | |
| CN207820120U (en) | A kind of automatic test signal source and television board | |
| CN203801032U (en) | Intelligent projector | |
| CN105810146B (en) | Disappear shadow circuit and its control method, horizontal drive circuit and display screen | |
| CN209774653U (en) | Driving circuit of programming education robot | |
| CN104332779A (en) | Smart retractable data line | |
| CN209216080U (en) | A kind of recording display EDID device | |
| CN209433399U (en) | Usb circuit and electronic equipment | |
| CN103957439B (en) | A kind of high-definition multimedia controller and its mainboard assembly | |
| CN207075051U (en) | A kind of transmission equipment of network cable transmission audio-video signal and serial signal | |
| CN209805433U (en) | Charging circuit and device | |
| CN106463007B (en) | Coin processor | |
| CN209402580U (en) | A kind of HDMI relaying extender | |
| CN210804405U (en) | USB signal integration and switching circuit | |
| CN206442386U (en) | One kind decompression isolated form PoE separators | |
| CN206620208U (en) | A kind of built-in matrix splicing system and safety monitoring display device | |
| CN209402659U (en) | A kind of HDMI signal processor | |
| CN203933868U (en) | Multiplexed signals line is realized the module TV of system communication | |
| CN207518723U (en) | A kind of high definition display system | |
| CN209250924U (en) | The power supply circuit of backlight drive circuit | |
| CN205039716U (en) | Modularization D.C. regulated power supply | |
| CN104993717A (en) | Modular direct-current regulated power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |