CN202602804U - High definition multimedia interface (HDMI) converter - Google Patents
High definition multimedia interface (HDMI) converter Download PDFInfo
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- CN202602804U CN202602804U CN 201220247745 CN201220247745U CN202602804U CN 202602804 U CN202602804 U CN 202602804U CN 201220247745 CN201220247745 CN 201220247745 CN 201220247745 U CN201220247745 U CN 201220247745U CN 202602804 U CN202602804 U CN 202602804U
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- hdmi
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- hot plug
- hpd
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Abstract
The utility model belongs to the technical field of multimedia and provides a high definition multimedia interface (HDMI) converter. The HDMI converter comprises three routes of HDMI input signals, one route of HDMI output signal and a main control device, each route of the HDMI input signals comprises an HDMI input D+ and D-signal, a 5-volt power supply signal, an HDMI clock control signal, a control clock signal and a hot plug detect (HPD) control signal, and the main control device comprises control and state registers which are mutually connected and an inter-integrated circuit (I2C) integrated controller. The HDMI converter has the advantages that required source of programs can be switched by slightly touching buttons, the switching is simple, convenient and rapid, when a new route is inserted, the latest inserted route can be automatically switched to, when multiple routes are inserted simultaneously, one of the routes is pulled out and automatically switched into one adjacent route, speed of each route reaches to 2.25Gbps, the transmission speed is fast, and the capacity of resisting disturbance is high.
Description
Technical field
The utility model belongs to multimedia technology field, relates to a kind of HDMI transducer.
Background technology
HDMI (High Definition Multimedia Interface is called for short HDMI) is that a kind of totally digitilized image and sound transmit interface, can transmit audio signal and the vision signal of not having compression.HDMI can be used for STB, DVD player, personal computer, game machine, digital sound and television set.HDMI can transmit audio frequency and video-audio signal simultaneously, because the Voice & Video signal adopts same cable, has simplified the installation of system greatly; Receive liking of the numerous common people deeply, at present the highest version of HDMI is HDMI1.4, and its reference frequency reaches 340MHZ; Maximum transmission rate reaches 10.2Gbps; The highest support 4096 * 2160 is multiplied several times than traditional analog television definition, so obtain the approval in market very soon; General high-clear display has only two input ports; And a plurality of equipment sources such as DVD, game machine, CATV set-top-box, PC computer etc. are often arranged during the actual use of family, very inconvenient if each use all need plug the HDMI cable, this just needs a kind of HDMI switch that can the switched input signal source; A plurality of like this signal sources just switch on the HDTV, and HDMI HD digital TV signal switch designs with regard to being based on above needs.
Summary of the invention
The utility model technical problem to be solved is the present situation to prior art, and provides a kind of antijamming capability strong, the HDMI transducer of easy switching.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of HDMI transducer; It is characterized in that; Comprise that three road HDMI input signals, one road HDMI export signal, HPD hot plug detection signal and main control unit; Described HDMI input signal comprises HDMI input D+ and D-signal, 5V power supply signal, HDMI clock control signal and control clock signal; Be connected with initiatively hybrid switch of 3:1 on described HDMI input D+ and the D-signal; HPD hot plug detection signal comprises HPD hot plug control input signals and HPD hot plug control output signal; Described main control unit comprises interconnective control and status register and I2C integrated manipulator; Described control clock signal is electrically connected with control and status register; The I2C integrated manipulator is electrically connected with HPD hot plug detection signal; After described HDMI input signal and HPD hot plug detection signal were imported, control and status register just detected behind corresponding one road 5V power supply signal and pass through I2C integrated manipulator control 3:1 active hybrid switch to switch HDMI input D+ and D-signal and HPD signal, and the activation television set made television set produce HPD hot plug control input signals then after while 5V power supply signal outputed to HDMI output signal; And be transferred to source device through HPD hot plug control output signal, this moment source device obtain the HPD signal and through behind the vision signal handshake authentication through initiatively hybrid switch and HDMI output signal output and on television set, show of HDMI input signal, 3:1.
The measure of taking for the optimization such scheme specifically comprises:
In above-mentioned a kind of HDMI transducer; Described HDMI output signal comprises HDMI output D+ and D-signal, HDMI clock control signal and HPD hot plug control input signals; Also be connected with initiatively hybrid switch of 3:1 on the described HDMI clock control signal, initiatively be electrically connected with the optional DDC of selecting buffering area or passive switch on the hybrid switch at the 3:1 of HDMI clock control signal.
In above-mentioned a kind of HDMI transducer; It is 8mil that described HDMI input D+ and D-holding wire require live width; Spacing 6mil does not allow any cabling in the 0.5mm scope on every side, on HDMI input D+ and D-signal, is connected with difference matched impedance resistance R T and matched impedance resistance R pd over the ground; Described difference matched impedance resistance R T is 100 Europe, and matched impedance resistance R pd is 50 Europe over the ground.
In above-mentioned a kind of HDMI transducer, described each road HDMI input D+ and D-holding wire all are made up of 4 tunnel differential lines, and the speed on each road is 2.25Gbps.
In above-mentioned a kind of HDMI transducer; When described HDMI input signal has only one the tunnel perhaps to have only two tunnel inputs; When new HDMI input signal inserted, main control unit can be controlled that road HDMI input signal that switches to up-to-date insertion automatically, when multichannel HDMI input signal is imported simultaneously; Wherein one road HDMI input signal is extracted, and the automatic control of main control unit meeting switches to a road adjacent HDMI input signal and exports.
In above-mentioned a kind of HDMI transducer; This switch comprises three HDMI maternal interface and band line HDMI male joints that are used to export HDMI output signal of being used for the HDMI input signal; The selection switching push button is set on switch, and this switch is provided with and HDMI maternal interface corresponding LED lamp.
Compared with prior art, the advantage of the utility model is: utilize contact button to switch needed program source, switch simple and convenient fast when new a road inserts; Can automatically switch to the Na Yilu of up-to-date insertion, when multichannel is inserted simultaneously, wherein one the tunnel extract; Can automatically switch to adjacent a road; And the speed on each road is up to 2.25Gbps, and not only transmission speed is fast, and antijamming capability is strong.
Description of drawings
Fig. 1 is this HDMI commutator principle block diagram;
Fig. 2 is this HDMI converter structure sketch map.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technical scheme of the utility model is done further to describe, but the utility model is not limited to these embodiment.
Among the figure, HDMI input signal 1; HDMI exports signal 2; HPD hot plug detection signal 3; Main control unit 4; HDMI input D+ and D-signal 5; 5V power supply signal 6; HDMI clock control signal 7; HPD hot plug control input signals 8; HPD hot plug control output signal 9; 3:1 is hybrid switch 10 initiatively; Control and status register 11; I2C integrated manipulator 12; Can select DDC buffering area or passive switch 13; HDMI maternal interface 14; HDMI male joint 15; Select switching push button 16; LED lamp 17; HDMI output D+ and D-signal 18; Control clock signal 19.
As shown in Figure 1; The main innovation of the utility model is will be by three tunnel source end HDMI input signals 1 through circuit; Switch by one road HDMI through control and to export to the high-definition liquid crystal required program of televising; Here circuit hardware part comprises that mainly three road HDMI input signals 1, one road HDMI export signal 2, HPD hot plug detection signal 3 and main control unit 4; HDMI input signal 1 comprises HDMI input D+ and D-signal 5,5V power supply signal 6, HDMI clock control signal 7 and control clock signal 19; HDMI output signal 2 comprises HDMI output D+ and D-signal 18, HDMI clock control signal 7 and HPD hot plug control input signals 8; HPD hot plug detection signal 3 comprises HPD hot plug control input signals 8 and HPD hot plug control output signal 9; Be connected with initiatively hybrid switch 10 of 3:1 on HDMI input D+ and the D-signal 5; Main control unit 4 comprises interconnective control and status register 11 and I2C integrated manipulator 12, and control clock signal 9 is electrically connected with control and status register 11, and I2C integrated manipulator 12 is electrically connected with HPD hot plug detection signal 3; 3:1 initiatively hybrid switch 10 is connected on the I2C integrated manipulator 12; After 8 inputs of HDMI input signal 1 and HPD hot plug control input signals, control just detects corresponding one road 5V power supply signal, 6 backs with status register 11 and initiatively hybrid switchs 10 are to switch HDMI input D+ and D-signal 5 and HPD signal through I2C integrated manipulator 12 control 3:1, and the activation television sets made television set produce HPD hot plug control input signals 8 then after 5V power supply signal 6 outputed to HDMI output signal 2 simultaneously; And be transferred to source device (like DVD etc.) through HPD hot plug control output signal 9; This moment, source device obtained the HPD signal and through behind the vision signal handshake authentication, through initiatively hybrid switch and 2 outputs of HDMI output signal and on television set, show of HDMI input signal 1,3:1, in order to guarantee the consistency of signal; Be connected with initiatively hybrid switch 10 of 3:1 on the HDMI clock control signal 7, initiatively be electrically connected with the optional DDC of selecting buffering area or passive switch 13 on the hybrid switch 10 at the 3:1 of HDMI clock control signal 7.
In order to reach good antijamming capability, PCB adopts the design of four laminates, and the intermediate layer is bus plane and ground plane; It is 8mil that HDMI input D+ and D-signal 5 lines require live width, and spacing 6mil does not allow any cabling in the 0.5mm scope on every side; On HDMI input D+ and D-signal 5, be connected with difference matched impedance resistance R T and matched impedance resistance R pd over the ground; Described difference matched impedance resistance R T is 100 Europe, and matched impedance resistance R pd is 50 Europe over the ground, in order to arrive the high-speed transfer purpose; Each road HDMI input D+ and D-holding wire all are made up of 4 tunnel differential lines; The speed on each road is 2.25Gbps, when HDMI input signal 1 has only one the tunnel perhaps to have only two tunnel inputs, when new HDMI input signal 1 inserts; Main control unit 4 can be controlled that road HDMI input signal 1 that switches to up-to-date insertion automatically; When multichannel HDMI input signal 1 was imported simultaneously, wherein one road HDMI input signal 1 was extracted, and the automatic control of main control unit 4 meetings switches to a road adjacent HDMI input signal 1 and exports.
Software design: the grand single-chip microcomputer 8-bit Microcontroller with OTP ROM of The software adopted justice designs; Utilize Visual Basic and Visual C++ hybrid programming that main control unit 4 is controlled; Control mode has 4 kinds of modes: piece transmission, interruption transmission, synchronous transmission and control transmission; As shown in Figure 2, this switch comprises three HDMI maternal interface 14 and HDMI male joints 15 that are used to export HDMI output signal 2 that are used to import HDMI input signal 1 on the structure in addition, on switch, is provided with and selects switching push button 16; This switch is provided with and HDMI maternal interface 14 corresponding LED lamps 17; Utilize like this to touch and select switching push button 16 to switch needed program source, show in progress that road through LED lamp 17 simultaneously, conveniently use.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spiritual defined scope of the utility model.
Claims (6)
1. HDMI transducer; It is characterized in that; Comprise that three road HDMI input signals (1), one road HDMI export signal (2), HPD hot plug detection signal (3) and main control unit (4); Described HDMI input signal (1) comprises HDMI input D+ and D-signal (5), 5V power supply signal (6), HDMI clock control signal (7) and control clock signal (19); Be connected with initiatively hybrid switch (10) of 3:1 on described HDMI input D+ and the D-signal (5); HPD hot plug detection signal (3) comprises HPD hot plug control input signals (8) and HPD hot plug control output signal (9); Described main control unit (4) comprises interconnective control and status register (11) and I2C integrated manipulator (12); Described control clock signal (19) is electrically connected with control and status register (11); I2C integrated manipulator (12) is electrically connected with HPD hot plug detection signal (3); After the input of described HDMI input signal (1) and HPD hot plug detection signal (3), control and status register (11) just detect corresponding one road 5V power supply signal (6) back and through I2C integrated manipulator (12) control 3:1 initiatively hybrid switch (10) to switch HDMI input D+ and D-signal (5) and HPD signal, simultaneously 5V power supply signal (6) output to HDMI export signal (2) after the activation television set makes television set produce HPD hot plug control input signals (8) then; And being transferred to source device through HPD hot plug control output signal (9), this moment, source device obtained the HPD signal and through initiatively hybrid switch and HDMI export signal (2) and export and on television set, show through HDMI input signal (1), 3:1 behind the vision signal handshake authentication.
2. a kind of HDMI transducer according to claim 1; It is characterized in that; Described HDMI output signal (2) comprises HDMI output D+ and D-signal (18), HDMI clock control signal (7) and HPD hot plug control input signals (8); Also be connected with initiatively hybrid switch (10) of 3:1 on the described HDMI clock control signal (7), initiatively be electrically connected with the optional DDC of selecting buffering area or passive switch (13) on the hybrid switch (10) at the 3:1 of HDMI clock control signal (7).
3. a kind of HDMI transducer according to claim 2; It is characterized in that it is 8mil that described HDMI input D+ and D-signal (5) line require live width, spacing 6mil; Do not allow any cabling in the 0.5mm scope on every side; On HDMI input D+ and D-signal (5), be connected with difference matched impedance resistance R T and matched impedance resistance R pd over the ground, described difference matched impedance resistance R T is 100 Europe, and matched impedance resistance R pd is 50 Europe over the ground.
4. a kind of HDMI transducer according to claim 3 is characterized in that, described each road HDMI input D+ and D-signal (5) line all are made up of 4 tunnel differential lines, and the speed on each road is 2.25Gbps.
5. according to each described a kind of HDMI transducer of claim 1 to 4; It is characterized in that; When described HDMI input signal (1) has only one the tunnel perhaps to have only two tunnel inputs; When new HDMI input signal (1) inserted, main control unit (4) control automatically switched to that road HDMI input signal (1) of up-to-date insertion, as multichannel HDMI input signal (1) when importing simultaneously; Wherein one road HDMI input signal (1) is extracted, and the automatic control of main control unit (4) meeting switches to a road adjacent HDMI input signal (1) and exports.
6. according to each described a kind of HDMI transducer of claim 1 to 4; It is characterized in that; This switch comprises three HDMI maternal interface (14) and band line HDMI male joints (15) that are used to export HDMI output signal (2) of being used for HDMI input signal (1); On switch, be provided with and select switching push button (16), this switch is provided with and HDMI maternal interface (14) corresponding LED lamp (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220247745 CN202602804U (en) | 2012-05-25 | 2012-05-25 | High definition multimedia interface (HDMI) converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220247745 CN202602804U (en) | 2012-05-25 | 2012-05-25 | High definition multimedia interface (HDMI) converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602804U true CN202602804U (en) | 2012-12-12 |
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ID=47320311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220247745 Withdrawn - After Issue CN202602804U (en) | 2012-05-25 | 2012-05-25 | High definition multimedia interface (HDMI) converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695025A (en) * | 2012-05-25 | 2012-09-26 | 浙江一舟电子科技股份有限公司 | HDMI converter |
| CN103974103A (en) * | 2014-05-23 | 2014-08-06 | 杭州讯歌科技有限公司 | High-definition multimedia controller |
-
2012
- 2012-05-25 CN CN 201220247745 patent/CN202602804U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695025A (en) * | 2012-05-25 | 2012-09-26 | 浙江一舟电子科技股份有限公司 | HDMI converter |
| CN102695025B (en) * | 2012-05-25 | 2014-07-23 | 浙江一舟电子科技股份有限公司 | HDMI converter |
| CN103974103A (en) * | 2014-05-23 | 2014-08-06 | 杭州讯歌科技有限公司 | High-definition multimedia controller |
| CN103974103B (en) * | 2014-05-23 | 2017-12-12 | 国网江西省电力公司赣东北供电分公司 | A kind of high-definition multimedia controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20140723 |
|
| RGAV | Abandon patent right to avoid regrant |