CN106454185A - High-definition multimedia interface multiplexing apparatus and method - Google Patents
High-definition multimedia interface multiplexing apparatus and method Download PDFInfo
- Publication number
- CN106454185A CN106454185A CN201611216615.3A CN201611216615A CN106454185A CN 106454185 A CN106454185 A CN 106454185A CN 201611216615 A CN201611216615 A CN 201611216615A CN 106454185 A CN106454185 A CN 106454185A
- Authority
- CN
- China
- Prior art keywords
- hdmi
- circuit
- audion
- control chip
- resistance
- 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
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Information Transfer Systems (AREA)
Abstract
The invention discloses a high-definition multimedia interface multiplexing method. The method comprises the following steps: a control chip detects whether a high-definition multimedia interface HDMI output module is connected with an HDMI channel transmission device and generates a corresponding control signal according to a detection result; and a switch circuiting selects to connect the HDMI output module with the control chip by using a USB data transceiver circuit or an HDMI data transceiver circuit according to the control signal. The invention further provides a high-definition multimedia interface multiplexing apparatus. Therefore, the function multiplexing of USB and HDMI output interfaces is realized, and thus saving the space of a circuit board and reducing the manufacturing cost.
Description
Technical field
The present invention relates to communication interface field, more particularly, to HDMI multiplexer and method.
Background technology
With the continuous development of multimedia equipment, the multimedia interface of various consumer electronics also gets more and more.At present, often
Multimedia interface includes HDMI HDMI, USB USB, VGA (Video
Graphics Array, Video Graphics Array) interface etc..But the increase of the type and quantity with multimedia interface, in setting
Can there is following defect during multimedia interface：Lead to circuit board real estate big because each interface is separately provided, be unfavorable for many matchmakers
Body integration of equipments, manufacturing cost is high.
Content of the invention
Present invention is primarily targeted at providing a kind of HDMI multiplexer and method, it is desirable to provide
A kind of output interface of HDMI and USB multiplexing functions, thus reduce circuit board space taking, reduces manufacturing cost.
For achieving the above object, a kind of HDMI multiplexer that the present invention provides includes being arranged on institute
State the HDMI HDMI output module on device, described device also includes control chip, on-off circuit, general
Serial bus interface usb data transmission circuit and HDMI data transmit-receive circuit；Described HDMI output module includes being multiplexed end, described
Multiplexing end is connected with the input of described usb data transmission circuit and the input of described HDMI data transmit-receive circuit；
Described control chip detects whether described HDMI output module is connected with HDMI channel transfer equipment, and according to detection
Result produces corresponding detection signal；
Described on-off circuit respectively with the control end of described usb data transmission circuit and described HDMI data transmit-receive circuit
Control end connects, for selecting to pass through described usb data transmission circuit or described HDMI data transmit-receive according to described control signal
Circuit makes described multiplexing end be connected with described control chip.
Preferably, described HDMI output module also includes test side, and described control chip is according to the state of described test side
Produce corresponding detection signal；Wherein, when the state of described test side is low level, described HDMI output module is led to HDMI
Road transmission equipment connects；When described test side state be high level when, described HDMI output module not with HDMI channel transfer
Equipment connects.
Preferably, when described HDMI output module is connected with HDMI channel transfer equipment, described control chip output is high
Level controling signal extremely described on-off circuit, so that described on-off circuit makes described multiplexing by described HDMI data transmit-receive circuit
End is connected with described control chip；When described HDMI output module is not connected with HDMI channel transfer equipment, described control core
Piece output low level control signal extremely described on-off circuit, so that described on-off circuit is made by described usb data transmission circuit
Described multiplexing end is connected with described control chip.
Preferably, described on-off circuit includes the first audion, the first power supply, second source, first resistor, second resistance
And 3rd resistor；The outfan of the first end of described first resistor and described control chip and described HDMI data transmit-receive circuit
Control end connects, and described first end is also connected with the first power supply through second resistance, the second end of described first resistor and described the
The base stage of one audion connects；The colelctor electrode of described first audion is connected with the control end of described usb data transmission circuit, institute
The colelctor electrode stating the first audion is also connected with described second source through described 3rd resistor, the emitter stage of described first audion
Ground connection.
Preferably, described usb data transmission circuit includes the second audion, the 3rd audion, the 4th resistance and the 5th electricity
Resistance；The colelctor electrode of the emitter stage of described second audion and the 3rd audion is connected with the multiplexing end of described HDMI output module,
The emitter stage of the colelctor electrode of described second audion and described 3rd audion is connected with described control chip, described two or three pole
The base stage of pipe is connected with the base stage of described 3rd audion through the 4th resistance and the 5th resistance, described 4th resistance and the described 5th
The common port of resistance is the control end of described usb data transmission circuit.
Preferably, described HDMI data transmit-receive circuit includes the 4th audion, the 5th audion, the 6th resistance, the 7th electricity
Resistance and the 8th resistance；The colelctor electrode of the emitter stage of described 4th audion and described 5th audion pass through described 6th resistance with
The multiplexing end of described HDMI output module connects, the colelctor electrode of described 4th audion and the emitter stage of described 5th audion with
Described control chip connects, the base stage of the described 4th audion base through the 7th resistance and the 8th resistance and described 5th audion
Pole connects；The common port of described 7th resistance and described 8th resistance is the control end of described HDMI data transmit-receive circuit.
Additionally, for achieving the above object, the present invention also provides a kind of HDMI multiplexing method, including with
Lower step：
Whether control chip detection HDMI HDMI output module is connected with HDMI channel transfer equipment,
And corresponding control signal is produced according to testing result；
On-off circuit is according to control signal selects to make by usb data transmission circuit or HDMI data transmit-receive circuit
HDMI output module is connected with described control chip.
Preferably, described HDMI output module includes test side；Described according to testing result produce corresponding control signal
Step include：
Control chip produces corresponding detection signal according to the state of described test side；Wherein, when the shape of described test side
When state is low level, described HDMI output module is connected with HDMI channel transfer equipment；When the state of described test side is high electricity
At ordinary times, described HDMI output module is not connected with HDMI channel transfer equipment.
Preferably, described HDMI output module includes being multiplexed end, and described multiplex section is defeated with described usb data transmission circuit
Enter end and the input of described HDMI data transmit-receive circuit connects；Described on-off circuit selects to pass through USB number according to control signal
The step that transmission circuit is connected with described control chip is made to include according to transmission circuit or HDMI data：
On-off circuit selects to make institute by described usb data transmission circuit or HDMI data transmit-receive circuit according to control signal
State multiplexing end to be connected with described control chip.
Preferably, described on-off circuit selects to pass through usb data transmission circuit or HDMI data transmit-receive according to control signal
Circuit makes the step that described multiplexing end is connected with described control chip include：
When described control chip output high-level control signal is to described on-off circuit, described on-off circuit passes through described
HDMI data transmit-receive circuit makes described multiplexing end be connected with described control chip；
When described control chip output low level control signal is to described on-off circuit, described on-off circuit passes through described
Usb data transmission circuit makes described multiplexing end be connected with described control chip.
Embodiment of the present invention setting HDMI output module, control chip, on-off circuit, usb data transmission circuit and HDMI
Data transmit-receive circuit；Wherein, HDMI output module includes being multiplexed end, the input of described multiplexing end and usb data transmission circuit
Connect with the input of HDMI data transmit-receive circuit；Control chip detection HDMI output module whether with HDMI channel transfer equipment
Connect, and corresponding detection signal is produced according to testing result；On-off circuit respectively with the control end of usb data transmission circuit and
The control end of HDMI data transmit-receive circuit connects, for selecting to pass through described usb data transmission circuit according to described control signal
Or described HDMI data transmit-receive circuit makes described multiplexing end be connected with described control chip.Thus by detecting HDMI output module
Whether it is connected with HDMI channel transfer equipment, controlling switch circuit selects different data transmit-receive circuit realiration USB and HDMI defeated
The multiplexing functions of outgoing interface, therefore save circuit board space, reduce manufacturing cost.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the electrical block diagram of HDMI multiplexer of the present invention；
Fig. 2 is the external structure schematic diagram of HDMI multiplexer of the present invention；
Fig. 3 is the schematic flow sheet of HDMI multiplexing method of the present invention.
Drawing reference numeral explanation：
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of HDMI multiplexer.
With reference to Fig. 1, the fine definition that this HDMI multiplexer includes arranging on such devices is many
Media interface HDMI output module 10, described device also includes control chip 20, on-off circuit 30, USB
Usb data transmission circuit 40 and HDMI data transmit-receive circuit 50；Described HDMI output module 10 includes being multiplexed end (sign), institute
State multiplexing end to be connected with the input of described usb data transmission circuit 40 and the input of described HDMI data transmit-receive circuit 50；
Described control chip 20 detects whether described HDMI output module 10 is connected with HDMI channel transfer equipment (not shown), and according to
Testing result produces corresponding detection signal；Described on-off circuit 30 control end with described usb data transmission circuit 40 respectively
Connect with the control end of described HDMI data transmit-receive circuit 50, for selecting to pass through described usb data according to described control signal
Transmission circuit 40 or described HDMI data transmit-receive circuit 50 make described multiplexing end be connected with described control chip 20.
It should be noted that the HDMI involved by the present embodiment is the A type HDMI output interface of standard, draw including 19
Foot, wherein, pin 13 is CEC, and pin 14 is to retain pin NC, and pin 17 is grounded for DDC/CEC, and pin 19 is monitored for hot plug
Hot Plug Detect；And the USB2.0 interface pin of standard includes VCC end, Data- end, Data+ end and GND ground terminal.This
Invention, by pin 13 compatibility of HDMI output interface is done the Data+ end of USB2.0 interface, will retain pin NC compatibility and be used as
The Data- end of USB2.0, pin 17 compatibility does USB2.0 interface as the GND ground terminal of USB2.0 interface and pin 18 compatibility
VCC realizes at end multiplexing functions, and then provides a kind of HDMI port with USB2.0 function.
In the present embodiment, when there being peripheral hardware to access HDMI output module 10, by detecting described peripheral hardware can be whether
HDMI channel transfer equipment is producing corresponding control signal and select different data converting circuits for on-off circuit 30 so that institute
State device and realize HDMI output or USB output.Specifically, described HDMI output module 10 includes being multiplexed end and test side (is not marked
Show), wherein multiplexing end is pin 13, and test side is pin 19.Control chip 20 can draw according in detection HDMI output module 10
The state of foot 19 produces corresponding control signal, makes on-off circuit 30 selecting using function to pin 13.Work as test side
State when being low level, described HDMI output module 10 is connected with HDMI channel transfer equipment, and it is electric that control chip 20 exports height
Flat control signal makes described multiplexing to described on-off circuit 30, described on-off circuit 30 by described HDMI data transmit-receive circuit 50
End is connected i.e. selection pin 13 and uses CEC functional realiey HDMI to export with described control chip 20；When the state of test side is height
During level, described HDMI output module 10 is not connected with HDMI channel transfer equipment, and described control chip 20 exports low level control
Signal processed to described on-off circuit 30, described on-off circuit 30 pass through described usb data transmission circuit 40 make described multiplexing end and
Described control chip 20 connects the Data+ end that i.e. selection pin 13 does USB2.0 interface, realizes USB output.By detecting HDMI
Whether output module 10 is connected selecting using function to pin 13 with HDMI channel transfer equipment, then coordinates and be originally used for NC
Pin 14 be data wire and VCC end and the earth terminal GND of USB, thus realizing HDMI or USB to select output, therefore decrease
Space hold during board design, reduces manufacturing cost.Further, since USB2.0 can be realized by HDMI output port
Function, decreases the use of hardware terminal indirectly, improves the overall stability of the system of multimedia equipment.
It should be noted that above-mentioned control chip is SOC (System on Chip, system level chip), by arranging institute
State SOC and can reduce power consumption, increase systemic-function, cost-effective.
Further, said switching circuit 30 include the first audion Q1, the first power supply VCC1, second source VCC2,
One resistance R1, second resistance R2 and 3rd resistor R3；The first end of described first resistor R1 and the output of described control chip 20
The control end of end and described HDMI data transmit-receive circuit 50 connects, and described first end is also through second resistance R2 and the first power supply VCC1
Connect, the second end of described first resistor R1 is connected with the base stage of described first audion Q1；The collection of described first audion Q1
Electrode is connected with the control end of described usb data transmission circuit 40, and the colelctor electrode of described first audion Q1 is also through the described 3rd
Resistance R3 is connected with described second source VCC2, the grounded emitter of described first audion Q1.When control chip 20 exports height
The base stage of the detection signal HDMI_DETECT of level, the first audion Q1 is high level, and described first audion Q1 saturation is led
Logical.Relatively, the control end of usb data transmission circuit 40 is low level, and the control end of HDMI data transmit-receive circuit 50 is high electricity
Flat, multiplexing end is connected with control chip by HDMI data transmit-receive circuit 50, CEC end when now multiplexing end achieves HDMI output
Using it is achieved that HDMI output.When control chip 20 exports low level detection signal HDMI_DETECT, the first audion
The base stage of Q1 is ended for low level, and the control end of usb data transmission circuit 40 act as high level due to pulling up, relatively,
The control end of HDMI data transmit-receive circuit 50 is low level, and usb data transmission circuit 40 and control chip are passed through in described multiplexing end
20 connections, when now multiplexing end achieves USB output, the use of DATA+ end function is it is achieved that USB exports.By on-off circuit
In 30, the saturation conduction of the first audion is it is achieved that the selection of different pieces of information transmission circuit.It should be noted that above-mentioned first electricity
Source VCC1 and second source VCC2 can be same power supply.
Further, above-mentioned usb data transmission circuit 40 includes the second audion Q2, the 3rd audion Q3, the 4th resistance
R4 and the 5th resistance R5；The colelctor electrode of the emitter stage of described second audion Q2 and the 3rd audion Q3 exports mould with described HDMI
The multiplexing end connection of block 10, the colelctor electrode of described second audion Q2 and the emitter stage of described 3rd audion Q3 and described control
Chip 20 connects, and the base stage of described second audion Q2 is through the 4th resistance R4 and the 5th resistance R5 and described 3rd audion Q3's
Base stage connects, and the common port of described 4th resistance R4 and described 5th resistance R5 is the control of described usb data transmission circuit 40
End.When control chip 20 is output as low level, the first audion Q1 cut-off, because the first power supply VCC1 pull-up effect makes USB
The control end of data transmit-receive circuit 40 be the 4th resistance R4 and the 5th resistance R5 common port be high level, the second audion Q2 and
3rd audion Q3 saturation conduction, described multiplexing end is that the pin 13 of HDMI output module 10 is selected as the DATA+ that USB exports
USB output is realized at end.By such scheme, realize the function of USB2.0.
Further, above-mentioned HDMI data transmit-receive circuit 50 includes the 4th audion Q4, the 5th audion Q5, the 6th resistance
R6, the 7th resistance R7 and the 8th resistance R8；The emitter stage of described 4th audion Q4 and the colelctor electrode of described 5th audion Q5
Be connected with the multiplexing end of described HDMI output module 10 by described 6th resistance R6, the colelctor electrode of described 4th audion Q4 and
The emitter stage of described 5th audion Q3 is connected with described control chip 20, and the base stage of described 4th audion Q4 is through the 7th resistance
R7 and the 8th resistance R8 is connected with the base stage of described 5th audion Q5；The public affairs of described 7th resistance R7 and described 8th resistance R8
End is the control end of described HDMI data transmit-receive circuit 50 altogether.When control chip 20 output high level, the first audion Q1's
Base stage is high level, the first audion Q1 saturation conduction, and now the control end of usb data transmission circuit 40 is low level, HDMI
The control end of data transmit-receive circuit 50 be the 7th resistance R7 and the 8th resistance R8 common port be high level, the 4th audion Q4 and
5th audion Q5 saturation conduction, described multiplexing end is that the pin 13 of HDMI output module 50 is selected as the CEC that HDMI exports
HDMI output is realized at end, thus ensure that original HDMI signal output.
It should be noted that alternatively, above-mentioned audion all can adopt the similar electronic component such as field effect transistor to substitute, this
Skilled person can be configured according to actual needs, and here does not repeat one by one.
Please with reference to Fig. 2, alternatively, when when using USB and HDMI multiplexing function, specific wire rod can be coordinated,
Wherein HDMI1 end is the HDMI output module of equipment of itself, and HDMI2 end connects the HDMI input module of peripheral hardware, and USB end is mother
Seat, the pin 18 of VCC, Data+, Data- and the GND in USB end and HDMI1 terminal, pin 13, pin 14 and PIN11 are corresponding
Connect, for connecing the equipment of USB2.0 interface, communicated with equipment of itself, realize the function of USB2.0.
The present invention also proposes a kind of HDMI multiplexing method.
Referring to Fig. 3, Fig. 3 is the schematic flow sheet of HDMI multiplexing method preferred embodiment of the present invention.
In present pre-ferred embodiments, described HDMI multiplexing method comprises the following steps：
Step S10, control chip detection HDMI HDMI output module whether with HDMI channel transfer
Equipment connects, and produces corresponding control signal according to testing result；
Step S20, on-off circuit selects to pass through usb data transmission circuit or HDMI data transmit-receive circuit according to control signal
Described HDMI output module is made to be connected with described control chip.
The HDMI multiplexing method of the present embodiment is to connect with the high-definition multimedia of the invention described above
Mouth multiplexer corresponding multimedia interface multiplexing method.In the present embodiment, control chip is connected with HDMI output module, leads to
Cross whether detection HDMI output module is connected with HDMI channel transfer equipment, produce control signal controlling switch circuit and select to pass through
Different data transmit-receive circuit realizes USB output or HDMI output function so that HDMI output module is connected with control chip, from
And realize realizing the multiplexing functions of USB and HDMI in the case that different channel transfer equipment access, therefore save circuit board
The space hold of layout, reduces manufacturing cost.
Specifically, described HDMI output module includes test side and multiplexing end, wherein, described multiplexing end and described USB number
Connect according to the input of transmission circuit and the input of described HDMI data transmit-receive circuit；Described control chip is according to described detection
Whether the state-detection HDMI output module at end is connected with HDMI channel transfer equipment, and produces corresponding inspection according to testing result
Survey signal；Wherein, when the state of described test side is low level, described HDMI output module is with HDMI channel transfer equipment even
Connect, control chip produces high-level control signal, described on-off circuit makes described multiplexing by described HDMI data transmit-receive circuit
End is connected with described control chip, to realize HDMI output；When the state of described test side is low level, described HDMI output
Module is not connected with HDMI channel transfer equipment, and described control chip output high-level control signal is to described on-off circuit, institute
Stating on-off circuit makes described multiplexing end be connected with described control chip by described usb data transmission circuit, to realize USB work(
Energy.
Therefore, by detecting the state of test side in HDMI output module, cooperation on-off circuit carries out data transmit-receive circuit
Select, it is achieved that HDMI output module is multiplexed the selection of end function, thus completing the multiplexing functions of USB and HDMI, to enter
One step has saved the space hold of circuit-board laying-out, reduces manufacturing cost.
These are only the preferred embodiments of the present invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of HDMI multiplexer, including setting HDMI on such devices
HDMI output module is it is characterised in that described device also includes control chip, on-off circuit, USB USB number
According to transmission circuit and HDMI data transmit-receive circuit；Described HDMI output module includes being multiplexed end, described multiplexing end and described USB number
Connect according to the input of transmission circuit and the input of described HDMI data transmit-receive circuit；
Described control chip detects whether described HDMI output module is connected with HDMI channel transfer equipment, and according to testing result
Produce corresponding detection signal；
Described on-off circuit respectively with the control end of described usb data transmission circuit and the control of described HDMI data transmit-receive circuit
End connects, for selecting to pass through described usb data transmission circuit or described HDMI data transmit-receive circuit according to described control signal
Described multiplexing end is made to be connected with described control chip.
2. HDMI multiplexer as claimed in claim 1 is it is characterised in that described HDMI output module
Also include test side, described control chip produces corresponding detection signal according to the state of described test side；Wherein, when described inspection
When the state surveying end is for low level, described HDMI output module is connected with HDMI channel transfer equipment；Shape when described test side
When state is high level, described HDMI output module is not connected with HDMI channel transfer equipment.
3. HDMI multiplexer as claimed in claim 1 or 2 it is characterised in that when described HDMI defeated
When going out module and being connected with HDMI channel transfer equipment, described control chip output high-level control signal to described on-off circuit,
So that described on-off circuit makes described multiplexing end be connected with described control chip by described HDMI data transmit-receive circuit；When described
When HDMI output module is not connected with HDMI channel transfer equipment, described control chip output low level control signal is opened to described
Close circuit, so that described on-off circuit makes described multiplexing end be connected with described control chip by described usb data transmission circuit.
4. HDMI multiplexer as claimed in claim 1 is it is characterised in that described on-off circuit includes
First audion, the first power supply, second source, first resistor, second resistance and 3rd resistor；The first end of described first resistor
It is connected with the outfan of described control chip and the control end of described HDMI data transmit-receive circuit, described first end is also through the second electricity
Resistance is connected with the first power supply, and the second end of described first resistor is connected with the base stage of described first audion；Described one or three pole
The colelctor electrode of pipe is connected with the control end of described usb data transmission circuit, and the colelctor electrode of described first audion is also through described
Three resistance are connected with described second source, the grounded emitter of described first audion.
5. HDMI multiplexer as claimed in claim 4 is it is characterised in that described usb data is received and dispatched
Circuit includes the second audion, the 3rd audion, the 4th resistance and the 5th resistance；The emitter stage and the 3rd of described second audion
The colelctor electrode of audion is connected with the multiplexing end of described HDMI output module, the colelctor electrode of described second audion and the described 3rd
The emitter stage of audion is connected with described control chip, and the base stage of described second audion is through the 4th resistance and the 5th resistance and institute
The base stage stating the 3rd audion connects, and the common port of described 4th resistance and described 5th resistance is described usb data transmitting-receiving electricity
The control end on road.
6. HDMI multiplexer as claimed in claim 4 is it is characterised in that described HDMI data transmit-receive
Circuit includes the 4th audion, the 5th audion, the 6th resistance, the 7th resistance and the 8th resistance；Described 4th audion send out
The colelctor electrode of emitter-base bandgap grading and described 5th audion is connected with the multiplexing end of described HDMI output module by described 6th resistance, institute
The emitter stage of the colelctor electrode and described 5th audion of stating the 4th audion is connected with described control chip, described 4th audion
Base stage be connected with the base stage of described 5th audion through the 7th resistance and the 8th resistance；Described 7th resistance and described 8th electricity
The common port of resistance is the control end of described HDMI data transmit-receive circuit.
7. a kind of HDMI multiplexing method is it is characterised in that described HDMI multiplexing side
Method comprises the following steps：
Whether control chip detection HDMI HDMI output module is connected with HDMI channel transfer equipment, and root
Produce corresponding control signal according to testing result；
On-off circuit selects to make described HDMI defeated by usb data transmission circuit or HDMI data transmit-receive circuit according to control signal
Go out module to be connected with described control chip.
8. HDMI multiplexing method as claimed in claim 7 is it is characterised in that described HDMI output module
Including test side；The described step according to the testing result corresponding control signal of generation includes：
Control chip produces corresponding detection signal according to the state of described test side；Wherein, when the state of described test side is
During low level, described HDMI output module is connected with HDMI channel transfer equipment；When the state of described test side is high level,
Described HDMI output module is not connected with HDMI channel transfer equipment.
9. HDMI multiplexing method as claimed in claim 8 is it is characterised in that described HDMI output module
Including multiplexing end, the input of described multiplex section and described usb data transmission circuit and described HDMI data transmit-receive circuit defeated
Enter end to connect；Described on-off circuit selects to make transmission circuit by usb data transmission circuit or HDMI data according to control signal
The step being connected with described control chip is included：
On-off circuit is made described multiple according to control signal selection by described usb data transmission circuit or HDMI data transmit-receive circuit
It is connected with described control chip with end.
10. HDMI multiplexing method as claimed in claim 9 is it is characterised in that described on-off circuit root
Select to make described multiplexing end and described control chip by usb data transmission circuit or HDMI data transmit-receive circuit according to control signal
The step connecting includes：
When described control chip output high-level control signal is to described on-off circuit, described on-off circuit passes through described HDMI
Data transmit-receive circuit makes described multiplexing end be connected with described control chip；
When described control chip output low level control signal is to described on-off circuit, described on-off circuit passes through described USB
Data transmit-receive circuit makes described multiplexing end be connected with described control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216615.3A CN106454185A (en) | 2016-12-26 | 2016-12-26 | High-definition multimedia interface multiplexing apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216615.3A CN106454185A (en) | 2016-12-26 | 2016-12-26 | High-definition multimedia interface multiplexing apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106454185A true CN106454185A (en) | 2017-02-22 |
Family
ID=58215882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611216615.3A Pending CN106454185A (en) | 2016-12-26 | 2016-12-26 | High-definition multimedia interface multiplexing apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106454185A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113282526A (en) * | 2020-02-20 | 2021-08-20 | 博世汽车部件(苏州)有限公司 | Integrated interface circuit and method for manufacturing interface circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464849A (en) * | 2007-12-21 | 2009-06-24 | Tcl集团股份有限公司 | Mixed digital interface |
| 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 |
| CN205158342U (en) * | 2015-10-19 | 2016-04-13 | 深圳微步信息股份有限公司 | HDMI interface multiplex circuit |
-
2016
- 2016-12-26 CN CN201611216615.3A patent/CN106454185A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464849A (en) * | 2007-12-21 | 2009-06-24 | Tcl集团股份有限公司 | Mixed digital interface |
| 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 |
| CN205158342U (en) * | 2015-10-19 | 2016-04-13 | 深圳微步信息股份有限公司 | HDMI interface multiplex circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113282526A (en) * | 2020-02-20 | 2021-08-20 | 博世汽车部件(苏州)有限公司 | Integrated interface circuit and method for manufacturing interface circuit |
| WO2021164637A1 (en) * | 2020-02-20 | 2021-08-26 | 博世汽车部件(苏州)有限公司 | Integrated interface circuit and interface circuit manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106993149A (en) | LVDS output protections are with preventing hot plugging circuit and LVDS transport modules | |
| CN107064662A (en) | The test device and its method of testing of connecting interface | |
| CN204539303U (en) | HDMI (High Definition Multimedia Interface) with multiplexing function and television set | |
| CN205484625U (en) | A intelligent test circuit for USB TYPE -C wire rod | |
| CN106454185A (en) | High-definition multimedia interface multiplexing apparatus and method | |
| CN208538435U (en) | A kind of display device | |
| CN208094694U (en) | One kind being compatible with UART control circuits based on HDMI interface | |
| CN105049022B (en) | Interface circuit | |
| CN207408937U (en) | A kind of conversion circuit of TTL RS 232s interface level | |
| CN206004880U (en) | Earphone | |
| CN205178133U (en) | Connector component | |
| CN104915313B (en) | A kind of FMC boards that level conversion is realized using FPGA | |
| CN203858551U (en) | Insertion connection structure sharing two types of interfaces, main board, case and electronic equipment of case | |
| CN104052457B (en) | differential signal transmitter circuit | |
| CN209028605U (en) | A kind of serial communication circuit and equipment | |
| CN204652542U (en) | A kind of usb expansion circuit based on MTK platform | |
| CN203480742U (en) | Soft-contact plug-free automatic wiring teaching experimental system | |
| CN203760209U (en) | MHL cable and MHL cable hot plug detecting system | |
| CN105207663B (en) | A kind of output circuit of compatibility PECL/TTL/CMOS level | |
| CN202798970U (en) | HDMI (high-definition multimedia interface) device | |
| CN207319229U (en) | Simple RS232 multifunctional serial port expanding units | |
| CN206370825U (en) | A kind of low cost simple SMBUS bus level change-over circuits | |
| CN205983423U (en) | Touch display device | |
| CN204205225U (en) | HDMI and DisplayPort modular converter | |
| CN202772373U (en) | USB connecting device and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |