CN103974103A - High-definition multimedia controller - Google Patents
High-definition multimedia controller Download PDFInfo
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- CN103974103A CN103974103A CN201410223550.XA CN201410223550A CN103974103A CN 103974103 A CN103974103 A CN 103974103A CN 201410223550 A CN201410223550 A CN 201410223550A CN 103974103 A CN103974103 A CN 103974103A
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Abstract
The invention discloses a high-definition multimedia controller. The controller comprises a box, an alternating current socket is installed in strong current installation space on the left side, and a main board assembly is installed in weak current installation space on the right side. The main board assembly comprises a main circuit board, multi-screen interaction and USB high-definition playing main board, a WIFI main board, an HDMI switching circuit and a main control circuit. The multi-screen interaction and USB high-definition playing main board and the HDMI signal output end of an HDMI input interface are respectively connected with the HDMI switching circuit. The multi-screen interaction and USB high-definition playing main board and the working state signal output end of the HDMI interface are respectively connected with the main control circuit. One output end of the main control circuit is connected with the control input end of the HDMI input interface. The HDMI switching circuit is used for selecting the closest working connection signal from two signals and outputting the closest working connection signal to the HDMI output interface. According to the technical scheme, the number of connecting wires is decreased, user experience is improved, and using safety and reliability are improved.
Description
Technical field
The present invention relates to multi-screen interactive and HDMI high definition play-back technology field, relate in particular to a kind of high-definition multimedia controller.
Background technology
HDMI (High Definition Multimedia Interface) HDMI (High Definition Multimedia Interface) is a kind of unpressed digital consumption electronic product interface standard, it merges high definition video and multi channel audio signal to be connected to and in single digital interface, synthesizes processing, by single line cable, send out, it be one for the digital technology standard of household appliances manufacturing, be widely used in DVD player, cable TV/satellite television Set Top Box (set-top box), on HDTV and other digital audiovisual equipments, it can improve the quality of digital picture effectively, no longer need to carry out analog-to-digital conversion.
HDMI interface is state-of-the-art Digital Television interface standard in the world at present, is the perfect solution of household appliances digital data transmission, connection.HDMI formulates based on DVI (Digital Visual Interface), can be regarded as strengthening and the extension of DVI, and both can be compatible.HDMI can be with high score pigtail rate video and the multichannel audio data of Digital Transmission uncompressed in the situation that keeping high-quality, and high transmission speed is 5Gbps.Indubitable, HDMI (High Definition Multimedia Interface) HDMI is the indispensable important component of audiovisual industry, and it is by a large main flow trend that is following audiovisual industry development.
Multi-screen interactive refers to, based on DLNA agreement or IGRS protocol, Miracast agreement etc., by WIFI network, connect, in different multimedia terminal, as common based on Ios, Android, the different intelligent terminal equipment on the different operating systems such as Symbian is as mobile phone, PAD, between TV etc., can carry out multimedia (audio frequency, video, picture) transmission of content, resolve, show the sequence of operations such as control, can on different platform equipment, share and show content simultaneously, enrich user's multimedia life.Briefly, be exactly the screen of several equipment, by special connection device, just can be connected to each other conversion.Such as the film on mobile phone can be play on TV, the picture on flat board can be shared on TV, and the content of computer can project on TV.It is a kind of technology of quietly rising at present.For example, the patent documentation that publication number is CN103581598A discloses and has a kind ofly interconnected, equipment, system and the implementation method of multi-screen interactive, and wherein, described equipment comprises: a central processing unit; The power supervisor, WIFI module, the HDMI interface that connect described central processing unit; Described display terminal connects described equipment by described HDMI interface, described equipment is by described WIFI module wireless connections intelligent terminal, described intelligent terminal is sent to equipment by WIFI module by the shared information of need, and by the processing of decoding of the central processing unit of equipment, by HDMI interface, transfer to display terminal and show.
But, in prior art, HDMI plays or transfer equipment, be the equipment of simple function, such as DVD player, Set Top Box, television rod, multi-screen interactive equipment etc., all needs relatively independent power supply supply, and HDMI interface and display device carry out physical connection, and display device of the prior art, such as TV, display etc., generally only provides one or two HDMI interface, generally all needs the setting of artificial selection interface when connecting.And existing most multi-screen interactive equipment is all to utilize outside LAN and smart machine to connect, and so just needs equipment use occasion to have WLAN, also need to carry out corresponding artificial setting.These not only cause user's inconvenient operation, have reduced user's experience, and too much connecting line are set and equipment has also increased security risk and use cost.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of high-definition multimedia controller, by AC outlet, power module, multi-screen interactive and USB high definition playing module, wireless routing module collection to equipment, reduce connecting line; Adopt commutation circuit to carrying out the automatic switchover of plug and play between the HDMI output of multi-screen interactive and USB high definition playing module and outside HDMI interface, promote user and experience; And equipment inner structure is carried out to reasonable Arrangement, avoid phase mutual interference, improve safety in utilization and reliability.
To achieve the above object, the present invention has adopted following technical scheme:
A high-definition multimedia controller, comprises box body, and the inner space of box body becomes forceful electric power and two installing spaces of light current by baffle for separating, and AC outlet is arranged in the forceful electric power installing space in left side, and mainboard assembly is arranged in the light current installing space on right side, mainboard assembly comprises main circuit board, input cable interface, multi-screen interactive and USB high definition broadcasting mainboard, HDMI output interface, HDMI input interface, USB input interface, WIFI mainboard, output cable interface, HDMI commutation circuit and governor circuit, USB input interface is realized circuit with multi-screen interactive and USB high definition broadcasting mainboard and is connected, and the input of WIFI mainboard is realized circuit with input cable interface with output cable interface respectively with output and is connected, the HDMI signal output part that multi-screen interactive and USB high definition are play mainboard and HDMI input interface is connected with HDMI commutation circuit respectively, the working state signal output that multi-screen interactive and USB high definition are play mainboard and HDMI input interface is connected with governor circuit respectively, an output of governor circuit is connected with the control input end of HDMI commutation circuit, like this, governor circuit is play mainboard from multi-screen interactive and USB high definition and is obtained working state signal and therefrom select nearest work with HDMI input interface and be connected Yi road, governor circuit is exported control signal again to HDMI commutation circuit, HDMI commutation circuit is selected work recently to connect Yi road and is exported HDMI output interface to from two-way HDMI signal according to the control signal of governor circuit.
As preferably, in the forceful electric power installing space in described box body left side, be provided with some socket apertures, AC outlet is installed in socket aperture, the rear portion of socket aperture is by box body cover closure, and box body cover plate is provided with the wire hole can supply lines penetrating.
As preferably, described box body rear portion is provided with the groove being recessed to form forward in the centre position of corresponding light current installing space, be formed with left chamber and right chamber like this in the light current installing space on right side, and groove walls is provided with bottom interface hole and sidepiece interface holes; Main circuit board sets up in the light current installing space that is fixed on box body by securing member, power module is arranged on the left rear side of main circuit board, be placed in the left chamber of box body, alternating current wires is connected with power module through after dividing plate, and power module is powered to multi-screen interactive and USB high definition broadcasting mainboard, WIFI mainboard, output cable interface, HDMI commutation circuit and governor circuit by main circuit board; Output mainboard is arranged on the right lateral side of main circuit board, is placed in the right chamber of box body, and HDMI output interface and USB output interface on output mainboard pass respectively the sidepiece interface holes in light current installing space, and input cable interface passes the bottom of box body groove.
As preferably, the mounting plate above of described box body, on mounting panel, be provided with left and right away from the first antenna and the second antenna, first antenna on right side is connected by wire with multi-screen interactive and USB high definition broadcasting mainboard; Second antenna in left side is connected by wire with WIFI mainboard.
As preferably, another output of described governor circuit is connected with the CEC control pin of HDMI output interface.
As preferably, thereby between the power end of HDMI input interface and earth terminal, cross-over connection has two series resistances to form resistor voltage divider circuits, in the middle of these two series resistances, draws the working state signal output as HDMI input interface.
As preferably, described USB input interface is play mainboard via main circuit board and USB output interface and multi-screen interactive and USB high definition and is realized circuit and is connected, the input of WIFI mainboard and output respectively via main circuit board with input cable interface and export cable interface and realize circuit and be connected.
As preferably, right lateral side at main circuit board is set up and is fixed with output mainboard by securing member, output mainboard is realized circuit by row's pin with main circuit board and is connected, multi-screen interactive and USB high definition are play mainboard and are being pegged graft between main circuit board and output mainboard and with the HDMI connecting interface on output mainboard, multi-screen interactive and USB high definition are play mainboard and are set up and be fixed on main circuit board by securing member, after output mainboard, HDMI output interface and USB output interface are installed, input cable interface is installed in the centre position below of main circuit board, USB input interface is installed in the centre position above of main circuit board, WIFI mainboard sets up to be fixed on the anterior left side of main circuit board and to realize circuit with main circuit board by securing member and is connected, output cable interface is arranged on the front, left side of main circuit board, HDMI input interface is arranged on the right side above of main circuit board.Described multi-screen interactive and USB high definition are play mainboard and are connected with USB input interface by wire.
As preferably, described governor circuit is arranged on main circuit board, and described HDMI commutation circuit is arranged on output mainboard.
As preferably, described HDMI commutation circuit adopts PI3HDMI341ART chip.
The present invention is owing to having adopted above technical scheme, by in AC outlet, power module, multi-screen interactive and USB high definition playing module, wireless routing module collection to equipment, connecting line and number of power sources have been reduced, adopt commutation circuit to carrying out the automatic switchover of plug and play between the HDMI output of multi-screen interactive and USB high definition playing module and outside HDMI interface, promoted user's experience.And equipment inner structure is carried out to reasonable Arrangement, and the isolation of forceful electric power light current is arranged, avoids phase mutual interference, improves safety in utilization and reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of box body;
Fig. 3 is the structural representation of mainboard assembly;
Fig. 4 is the vertical view of mainboard assembly;
Fig. 5 is rearview of the present invention (removing mounting box);
Fig. 6 is front view of the present invention;
Fig. 7 is vertical view of the present invention (removing mounting box);
Fig. 8 is the theory diagram of mainboard assembly in the present invention;
Fig. 9 is the circuit theory diagrams of HDMI commutation circuit in the present invention;
Figure 10 is the circuit theory diagrams of governor circuit and HDMI input interface in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
Embodiment 1:
A kind of high-definition multimedia controller as shown in Figure 1, comprises panel 1, mounting panel 6, mainboard assembly 7, socket 11 and box body 8.
As shown in Figure 2, the inner space of described box body is separated into forceful electric power and two installing spaces of light current by dividing plate 802, in the forceful electric power installing space in left side, be provided with the socket aperture 801 of two accommodating sockets 11, the rear portion of socket aperture 801 is by box body cover plate 10 sealing, and box body cover plate 10 is provided with the wire hole can supply lines penetrating.Because box body rear portion is provided with the groove 807 being recessed to form forward in the centre position of corresponding light current installing space, so be formed with left chamber 803 and right chamber 806 in the light current installing space on right side, groove 807 walls are provided with bottom interface hole 804 and sidepiece interface holes 805, and mainboard assembly 7 is arranged in light current installing space.
As shown in Figure 3, Figure 4, mainboard assembly 7 comprises main circuit board 701, power module 702, input cable interface 703, multi-screen interactive and USB high definition broadcasting mainboard 704, output mainboard 705, USB output interface 706, HDMI output interface 707, HDMI connecting plate 708, HDMI connecting interface 709, HDMI input interface 710, USB input interface 711, WIFI mainboard 712, the first antenna 713, output cable interface 714 and the second antenna 715.Main circuit board 701 sets up in the light current installing space that is fixed on box body 8 by securing member, power module 702 is arranged on the left rear side of main circuit board 701, be placed in the left chamber 803 of box body 8, civil power electric wire is connected with power module 702 through dividing plate 802 is rear, and power module 702 is arranged on other module for power supply on main circuit board 701 by 701 pairs of main circuit boards.Output mainboard 705 sets up the right lateral side that is fixed on main circuit board 701 by securing member, be placed in the right chamber 806 of box body 8, output mainboard 705 is realized circuit by row's pin with main circuit board 701 and is connected, before output mainboard 705, HDMI connecting plate 708 is installed, HDMI connecting interface 709 is installed on HDMI connecting plate 708, multi-screen interactive and USB high definition are play mainboard 704 between main circuit board 701 and output mainboard 705, multi-screen interactive and USB high definition are play HDMI socket and the HDMI connecting interface 709 of mainboard 704 and are pegged graft, multi-screen interactive and USB high definition are play mainboard 704 by HDMI connecting interface 709, HDMI connecting plate 708 is realized circuit with output mainboard 705 and is connected, multi-screen interactive and USB high definition are play mainboard 704 and are set up and be fixed on main circuit board 701 by securing member, after output mainboard 705, HDMI output interface 707 and USB output interface 706 are installed, as shown in Figure 5, HDMI output interface 707 and USB output interface 706 pass respectively the sidepiece interface holes 805 in light current installing space, input cable interface 703 is installed in the centre position below of main circuit board 701, input cable interface 703 passes the bottom of box body 8 grooves 807, and in order to facilitate fixed outer connecting line, in the bottom of groove 807, be provided with line ball parts 12.USB input interface 711 is installed in the centre position above of main circuit board 701, WIFI mainboard 712 sets up to be fixed on the anterior left side of main circuit board 701 and to realize circuit with main circuit board 701 by securing member and is connected, output cable interface 714 is arranged on the front, left side of main circuit board 701, and HDMI input interface 710 is arranged on the right side above of main circuit board 701.The first antenna 713 and the second antenna 715 left and right are away from setting, and first antenna 713 on right side is play the antenna of mainboard 704 as multi-screen interactive and USB high definition, and both connect by wire; Second antenna 715 in left side is as the antenna of WIFI mainboard, and both connect by wire.
In the present embodiment, WiFi mainboard is placed on left side, far away apart from multi-screen interactive and the USB high definition broadcasting mainboard on right side, can prevent the phase mutual interference between treatment circuit signal.The antenna of WiFi mainboard and multi-screen interactive and USB high definition broadcasting mainboard is distributed in the two ends, left and right of product, reduces the interference between aerial signal.Output of products, can make user installation more simple and convenient to the port of TV inwardly, is with live conductor parts fixed card line position simultaneously, prevents wire lead drop out.Power circuit is partly distributed in the left side of product, and functional circuit is distributed in right side, is conducive to the heat balance of whole product, is beneficial to heat radiation, improves product reliability.The introducing of alternating current, only at high order end, is pulled open with weak current part distance, has guaranteed the fail safe of product.
As shown in Figure 1, Figure 6, Figure 7, being fixedly connected with mounting panel 6 by securing member above of described box body 8, mounting panel 6 above by double faced adhesive tape 2 panel 1 that is adhesively fixed, panel 1 and mounting panel 6 are provided with the perforate corresponding with socket 11, HDMI input interface 710, USB input interface 711 and output cable interface 714.On mounting panel 6, be also provided with the perforate corresponding with the first antenna 713, the second antenna 715, the first antenna 713, the second antenna 715 are placed in its perforate separately and are adhesively fixed on panel 1 by double faced adhesive tape.This product can be put form; also can be mounted in form in body of wall; in the time of in it is arranged on body of wall; in order better to protect product; can be in body of wall pre-buried mounting box 9; mounting box 9 the left and right sides be provided with screw hole; mounting panel 6 can be fixed on by the screw of the left and right sides on mounting box 9 like this; for fear of screw, expose and affect outward appearance; in the left and right sides of panel 1, be provided with the cover plate 3 that covers screw; cover plate 3 is below by double faced adhesive tape 4 buckle 5 that is adhesively fixed, and connects and fixes with mounting panel 6 by this buckle 5.
The circuit catenation principle of high-definition multimedia controller is as shown in Fig. 8, Fig. 9, Figure 10, exchanging input electric wire 717 is connected with power module 702 with socket 11, USB input interface 711 is play mainboard 704 via main circuit board 701 and USB output interface 706 and multi-screen interactive and USB high definition and is realized circuit and is connected, the input of WIFI mainboard 712 and output respectively via main circuit board 701 with input cable interface 703 and export cable interface 714 and realize circuit and be connected.In order to realize multi-screen interactive and USB high definition, play the automatic switchover between mainboard 704 and this two-way of HDMI input interface HDMI signal, be provided with HDMI commutation circuit 7011 and governor circuit 7012, the HDMI signal output part that multi-screen interactive and USB high definition are play mainboard 704 and HDMI input interface is connected with HDMI commutation circuit 7011 respectively, the working state signal output that multi-screen interactive and USB high definition are play mainboard 704 and HDMI input interface 710 is connected with governor circuit 7012 respectively, an output of governor circuit 7012 is connected with the control input end of HDMI commutation circuit 7011, another output of governor circuit 7012 is connected with the CEC control pin of HDMI output interface 707, like this, governor circuit 7012 is play mainboard 704 from multi-screen interactive and USB high definition and is obtained working state signal and therefrom select nearest work with HDMI input interface and be connected Yi road, governor circuit 7012 is exported control signal again to HDMI commutation circuit 7011, HDMI commutation circuit 7011 is selected work recently to connect Yi road and is exported HDMI output interface 707 to from two-way HDMI signal according to the control signal of governor circuit 7012, and governor circuit 7012 can be implemented to control to display device by the CEC control end of HDMI output interface 707.
Wherein, the working state signal output of described HDMI input interface 710 refers to: as shown in figure 10, between 18 pin 5V power ends of HDMI input interface 710 and earth terminal, cross-over connection has two series resistance R23 and R27 to form resistor voltage divider circuit, in the middle of these two series resistances, draw the working state signal output as HDMI input interface 710, when 5V power supply accesses, in the middle of these two series resistances, draw can obtain with governor circuit the suitable 3.3V voltage signal of the operating voltage of MCU.
The module that the model that described multi-screen interactive and USB high definition broadcasting mainboard (module) 704 adopt Shenzhen Wei Xin Science and Technology Ltd.s to produce is V5i, its operation principle and publication number are that the disclosed principle of patent documentation of CN103581598A and CN102932683A is identical, multi-screen interactive scheme all adopts consensus standard scheme (as DLNA agreement, Miracast agreement, airplay agreement), USB high definition is play scheme can realize the full HD conversion that USB turns HDMI, and the USB that is equivalent to sell existing market turns HDMI transducer.This module adopts general international standard, without APP is installed.Subscriber equipment can be by pushing and mirror image technology, and wireless transmission audio frequency and video are watched to television set.Support that Airplay mirror image, DLNA push, the large agreement of Miracast mirror image three, compatibility is most smart machines in the market, can play the high resolution audio and video file of the various forms in user's USB memory device.Described multi-screen interactive and USB high definition are play mainboard 704 and are had multi-screen interactive part and USB high definition broadcasting part two-way HDMI signal, its main control chip can select to connect recently the HDMI signal output of Yi road according to the work order of connection, and its main control chip also has a road and shows whether have the working state signal of HDMI signal output to export governor circuit 7012 to.Described WIFI mainboard 712 can be arbitrary WIFI module of selling on existing market, and WIFI mainboard 712 can provide the required local area network (LAN) of multi-screen interactive agreement to connect, and also can provide separately user's wired and wireless network to be connected.
Described governor circuit 7012 is arranged on main circuit board 701, and described HDMI commutation circuit 7011 is arranged on output mainboard 705.Described multi-screen interactive and USB high definition are play mainboard 704 and are connected with USB input interface 711 by wire.
Input cable interface 703, for the access of outside WAN; USB output interface 706, is connected with the USB interface of display device (as television set, display etc.); HDMI output interface 707, is connected with the HDMI interface of display device (as television set, display etc.); HDMI input interface 710, connects for user HDMI audio-visual devices; USB input interface 711, connects for user's USB memory device or other equipment (as computer, mobile phone, camera etc.); Output cable interface 714, RJ45 interface connects for user's wiring logging-on function.
As shown in Figure 9, HDMI commutation circuit 7011 adopts PI3HDMI341ART chip.PI3HDMI341ART is the active 3:1 switching circuit based on DVI/HDMI standard, and integrated HD video TMDS signal is processed.PI3HDMI341ART switches 1 road high resistant 1TMDS signal to the commutation circuit of receiving terminal by the 3 effective TMDS signals in tunnel.It receives differential signal and drives display unit from the video component of choosing.By a configuration bit, can provide 3 kinds of controllable output pulsation amplitudes.The output pulsation amplitude allowing is tri-kinds of 500mV, 750mV and 1000mV.This solution also provides a unique senior pre-emphasis technique to reduce the prolongation of the rising and falling time causing in long-distance transmissions process.Each complete HDMI/DVI passage also has compared with the additional signal of low speed to be needed to switch.This chip solution provides the switch of additional signal, integrates with high speed signal switch, has realized total solution.Input at each high-speed channel is used balancing technique, can successfully eliminate the fluctuation being produced by long cable from input to receiving terminal, thereby make user can use longer cable (up to 25 meters).Support is by bandwidth and 12 color depths of the maximum 2.5Gbps of HDMI standard 1.3 version regulations.Due to its one-way, so aim at video receiver, use.For user's circuit, this chip should be positioned at receiving terminal one side, receives the input of a plurality of video equipments, as computer, and DVD, Set Top Box, D-VHS etc.PI3HDMI341ART is that first DVI/HDMI switching chip while compatible with HDMI 1.1,1.2,1.3 agreements of industry have guaranteed that the video flowing of various high bandwidths outputs to display unit from video equipment.The ESD/EOS protection of 8kV is also provided simultaneously, and it is the reliable assurance of using of current many consumer electronics kind equipments.
PI3HDMI341ART chip can be realized three road HDMI signals and select to switch to a road HDMI signal output, therefore another embodiment of the present invention can be play above-mentioned multi-screen interactive and USB high definition mainboard 704 and is divided into two of multi-screen interactive module and USB high definition playing modules, the HDMI signal output of these two modules is all connected to described HDMI commutation circuit 7011, these two modules are all exported corresponding working state signal to governor circuit 7012 simultaneously, to realize the identical function of embodiment 1.
Governor circuit 7012 adopts STM32F103R6T6 chip.As shown in figure 10, after resistance R 35 and capacitor C 25 series connection, be connected across between the MCU VDD-to-VSS end of 3.3V, the intermediate point of resistance R 35 and capacitor C 25 is connected the reset pin 7 of STM32F103R6T6 chip, it is in parallel with resistance R 35 that diode D5 is connected across resistance R 35 two ends, diode D5 is for discharging the accumulate of electric capacity after disconnecting at power supply, in the unsettled situation of power supply, guarantee the reliability of reset circuit, guarantee the normal work of STM32F103R6T6 chip.23 pins of STM32F103R6T6 chip are connected with the resistor voltage divider circuit of HDMI input interface 710; HDMI input interface 710 is provided with Rclamps chip; this is for HDMI interface, to provide TVS (wink the is constrained system) chip of ultra-low capacitance formula overvoltage protection, can avoid due to ESD (static release), CDE (cable discharge) or the caused overvoltage infringement of EFT (electric fast transient).62 pins of STM32F103R6T6 chip are play mainboard 704 with 63 pins with multi-screen interactive and USB high definition and are connected, 62 pins are used for gathering the work state information of multi-screen interactive and USB high definition broadcasting mainboard 704, and 63 pins can be used for multi-screen interactive and USB high definition broadcasting mainboard 704 to carry out switch control and signal output selection control if desired.26-29 pin is connected with HDMI commutation circuit 7011, for controlling the selection output of PI3HDMI341ART chip; 35 pins are connected with the CEC control pin 14 of HDMI output interface 707, for realizing the control to display device.
At another one embodiment of the present invention, governor circuit 7012 also can be connected with display device by RS232 control interface 716, for realizing the control to display device.
In another embodiment of the present invention, governor circuit 7012 also can be abandoned the control to display device, governor circuit 7012 only needs conventional logical circuit to realize to select from two working state signals one of nearest connection like this, thereby control HDMI commutation circuit, switches output.
It is emphasized that: be only preferred embodiment of the present invention above, not the present invention is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a high-definition multimedia controller, it is characterized in that, comprise box body (8), the inner space of box body (8) is separated into forceful electric power and two installing spaces of light current by dividing plate (802), AC outlet (11) is arranged in the forceful electric power installing space in left side, and mainboard assembly (7) is arranged in the light current installing space on right side, described mainboard assembly comprises main circuit board (701), input cable interface (703), multi-screen interactive and USB high definition broadcasting mainboard (704), HDMI output interface (707), HDMI input interface (710), USB input interface (711), WIFI mainboard (712), output cable interface (714), HDMI commutation circuit (7011) and governor circuit (7012), USB input interface (711) is realized circuit with multi-screen interactive and USB high definition broadcasting mainboard (704) and is connected, and the input of WIFI mainboard (712) is realized circuit with input cable interface (703) with output cable interface (714) respectively with output and is connected, the HDMI signal output part that multi-screen interactive and USB high definition are play mainboard (704) and HDMI input interface (710) is connected with HDMI commutation circuit (7011) respectively, the working state signal output that multi-screen interactive and USB high definition are play mainboard (704) and HDMI input interface (710) is connected with governor circuit (7012) respectively, an output of governor circuit (7012) is connected with the control input end of HDMI commutation circuit (7011), like this, governor circuit (7012) is play mainboard (704) and HDMI input interface from multi-screen interactive and USB high definition and is obtained working state signal also therefrom selecting nearest work is connected Yi road, governor circuit (7012) is exported control signal again to HDMI commutation circuit (7011), HDMI commutation circuit (7011) is selected work recently to connect Yi road and is exported HDMI output interface (707) to from two-way HDMI signal according to the control signal of governor circuit (7012).
2. a kind of high-definition multimedia controller according to claim 1, it is characterized in that, in the forceful electric power installing space in described box body left side, be provided with some socket apertures (801), AC outlet (11) is installed in socket aperture (801), the rear portion of socket aperture (801) is by box body cover plate (10) sealing, and box body cover plate (10) is provided with the wire hole can supply lines penetrating.
3. a kind of high-definition multimedia controller according to claim 1, it is characterized in that, described box body rear portion is provided with the groove (807) being recessed to form forward in the centre position of corresponding light current installing space, in the light current installing space on right side, be formed with like this left chamber (803) and right chamber (806), groove (807) wall is provided with bottom interface hole (804) and sidepiece interface holes (805); Main circuit board (701) sets up in the light current installing space that is fixed on box body (8) by securing member, power module (702) is arranged on the left rear side of main circuit board (701), be placed in the left chamber (803) of box body (8), alternating current wires is connected with power module (702) through after dividing plate (802), and power module (702) plays mainboard (704), WIFI mainboard (712), output cable interface (714), HDMI commutation circuit (7011) and governor circuit (7012) power supply to multi-screen interactive and USB high definition by main circuit board (701); Output mainboard (705) is arranged on the right lateral side of main circuit board (701), be placed in the right chamber (806) of box body (8), HDMI output interface (707) and USB output interface (706) on output mainboard (705) pass respectively the sidepiece interface holes (805) in light current installing space, and input cable interface (703) passes the bottom of box body (8) groove (807).
4. a kind of high-definition multimedia controller according to claim 1, it is characterized in that, the mounting plate (6) above of described box body (8), on mounting panel (6), be provided with left and right away from the first antenna (713) and the second antenna (715), first antenna (713) on right side and multi-screen interactive and USB high definition broadcasting mainboard (704) are connected by wire; Second antenna (715) in left side is connected by wire with WIFI mainboard.
5. a kind of high-definition multimedia controller according to claim 1, is characterized in that, another output of described governor circuit (7012) is connected with the CEC control pin of HDMI output interface (707).
6. a kind of high-definition multimedia controller according to claim 1, it is characterized in that, at HDMI input interface (710) thus power end and earth terminal between cross-over connection have two series resistances to form resistor voltage divider circuits, in the middle of these two series resistances, draw the working state signal output as HDMI input interface (710).
7. a kind of high-definition multimedia controller according to claim 1, it is characterized in that, described USB input interface (711) is play mainboard (704) with USB output interface (706) and multi-screen interactive and USB high definition respectively via main circuit board (701) and is realized circuit and is connected, the input of WIFI mainboard (712) and output respectively via main circuit board (701) with input cable interface (703) and export cable interface (714) and realize circuit and be connected.
8. a kind of high-definition multimedia controller according to claim 1, it is characterized in that, right lateral side at main circuit board (701) is set up and is fixed with output mainboard (705) by securing member, output mainboard (705) is realized circuit by row's pin with main circuit board (701) and is connected, multi-screen interactive and USB high definition are play mainboard (704) and are positioned at main circuit board (701) and export between mainboard (705) and with the HDMI connecting interface (709) on output mainboard (705) and peg graft, multi-screen interactive and USB high definition are play mainboard (704) and are set up and be fixed on main circuit board (701) by securing member, HDMI output interface (707) and USB output interface (706) are installed after output mainboard (705), input cable interface (703) is installed in the centre position below of main circuit board (701), USB input interface (711) is installed in the centre position above of main circuit board (701), WIFI mainboard (712) sets up to be fixed on the anterior left side of main circuit board (701) and to realize circuit with main circuit board (701) by securing member and is connected, output cable interface (714) is arranged on the front, left side of main circuit board (701), HDMI input interface (710) is arranged on the right side above of main circuit board (701), described multi-screen interactive and USB high definition are play mainboard (704) and are connected with USB input interface (711) by wire.
9. a kind of high-definition multimedia controller according to claim 8, is characterized in that, it is upper that described governor circuit (7012) is arranged on main circuit board (701), and described HDMI commutation circuit (7011) is arranged on output mainboard (705).
10. a kind of high-definition multimedia controller according to claim 1, is characterized in that, described HDMI commutation circuit (7011) adopts PI3HDMI341ART chip.
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| CN103974103B (en) | 2017-12-12 |
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