CN102123247A - Loop-connection system for splicing unit and implementation method thereof - Google Patents
Loop-connection system for splicing unit and implementation method thereof Download PDFInfo
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Abstract
The invention discloses a loop-connection system for a splicing unit and an implementation method thereof; and the splicing unit comprises a front end splicing device and a rear end splicing device. The loop connection of a video signal and a control instruction is realized through a signal loop-connection system and a control instruction loop-connection system. The video signal comprises various types of formats and has very strong anti-interference ability and good definition, and the control device can independently control any splicing unit so as to greatly facilitate the flexibility of operation.
Description
Technical field
The present invention relates to concatenation unit ring logical technical field, particularly ring way system and its implementation of a kind of concatenation unit.
Background technology
Growing along with monitoring technique, the monitor large screen splicing has obtained using widely in safety-protection system or other system, and the large screen splicing of high-definition signal has especially developed into the main flow of following monitor large screen splicing.Now, not only can utilize a monitor to monitor, also have and utilized monitor joined screen to carry out the amplification Display Technique of vision signal.
But, present large screen splicing technology can only show the seldom vision signal of way mostly, and to carry out Video signal processing with the large screen splicing controller and could realize the function of vision signal tiled display on monitor joined screen, on the other hand, present large screen splicing technology can only show the ordinary video signal, can not realize that the large screen splicing of high-definition signal shows.
In view of this, need provide a kind of new monitor joined screen technology.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide ring way system and its implementation of a kind of concatenation unit, can only carry out the analog video signal splicing to solve ring way system of the prior art, and the poor anti jamming capability of described vision signal, the problem that described concatenation unit can not be controlled separately.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of concatenation unit, wherein, described concatenation unit comprises the display unit that is used for display video signal, the signal end daughter board that is used for receiving inputted signal, splicing fore device and splicing back-end device; Described signal end daughter board, splicing fore device and splicing back-end device are connected respectively; Described display unit connects the splicing back-end device; Described splicing rear end comprises second microprocessor and HDMI switch, wherein:
The HDMI switch, connect described signal end daughter board, splicing fore device and second microprocessor, be used for according to control command one of them of external vision signal of selective reception and local video signal and as the information source of concatenation unit or as the signal output of the logical output of ring;
Second microprocessor is used to receive the signal that the HDMI switch sends, and sends display unit after treatment to.
Described concatenation unit, wherein, described signal end daughter board comprises local video signal input port, the logical input interface of ring, the logical output interface of ring, control command input interface, control command output interface; Described splicing fore device comprises first microprocessor, HDMI encoder and concatenation unit coding unit; Wherein:
The local video signal input port is used to receive local video signal and outputs to first microprocessor;
Ring messenger input interface connects the HDMI switch, is used to receive external vision signal and outputs to the HDMI switch;
Ring messenger output interface connects the HDMI switch, is used to export the logical external vision signal of exporting of conduct ring that the HDMI switch is selected;
The control command input interface is used to receive the external control instruction and sends the HDMI switch to;
The control command output interface is used for described external control instruction output.
First microprocessor is used to receive local video signal, and converts local video signal to Low Voltage Differential Signal and be transferred to the HDMI encoder;
The HDMI encoder connects first microprocessor, is used to receive the Low Voltage Differential Signal that first microprocessor transmits, and Low Voltage Differential Signal is carried out transform coding handle, and the signal after will handling through transform coding is exported to the HDMI switch.
Described concatenation unit, wherein, described splicing back-end device also comprises signal adjustment unit, described signal adjustment unit connects described HDMI switch, the external vision signal that is used for ring messenger input interface is sent to the HDMI switch is adjusted processing, and will be exported through adjusting the external vision signal of handling by the HDMI switch.
Described concatenation unit, wherein, described signal adjustment unit is used for according to the power and the integrality of the external vision signal of ring messenger input interface transmission it being recovered reduction and shaping filter.
A kind of ring way system of concatenation unit comprises two or more concatenation unit and control device, and wherein, described concatenation unit comprises display unit, signal end daughter board, splicing fore device and the splicing back-end device that is used for display video signal; Described signal end daughter board comprises local video signal input port, ring messenger input interface, ring messenger output interface, control command input interface, control command output interface; Described splicing fore device comprises first microprocessor, HDMI encoder and concatenation unit coding unit; Described splicing rear end comprises second microprocessor and HDMI switch; Wherein:
The local video signal input port is used to receive local video signal and outputs to first microprocessor;
Ring messenger input interface connects the HDMI switch, is used to receive external vision signal and outputs to the HDMI switch;
Ring messenger output interface connects the HDMI switch, is used to export the logical external vision signal of exporting of conduct ring that the HDMI switch is selected;
The control command input interface is used for the control command of receiving control device and sends the HDMI switch to;
The control command output interface is used for described external control instruction output.
First microprocessor is used to receive local video signal, and converts local video signal to Low Voltage Differential Signal and be transferred to the HDMI encoder;
The HDMI encoder connects first microprocessor, is used to receive the Low Voltage Differential Signal that first microprocessor transmits, and Low Voltage Differential Signal is carried out transform coding handle, and the signal after will handling through transform coding is exported to the HDMI switch;
Described HDMI switch is used for the control command according to control device, one of them of external vision signal of selective reception and local video signal and as the information source of concatenation unit or as the signal output of the logical output of ring;
Described second microprocessor is used to receive the signal that the HDMI switch sends, and sends display unit after treatment to;
Described control device is used to receive user's operation, sends control instruction corresponding.
The ring way system of described concatenation unit, wherein, the ring messenger output interface of described concatenation unit is connected in series with the ring messenger input interface of next concatenation unit and the ring messenger output interface of all concatenation units joins end to end with the formation of ring messenger input interface, is used to realize that the ring of vision signal is logical.
The ring way system of described concatenation unit, wherein, the control command input interface of first concatenation unit connects the control command output port of control device in described each concatenation unit, the control command output interface of all the other concatenation units is connected in series with the control command input interface of next concatenation unit, is used to realize that the ring of control command is logical.
The ring way system of described concatenation unit, wherein, described splicing back-end device also comprises signal adjustment unit, described signal adjustment unit connects described HDMI switch, the external vision signal that is used for ring messenger input interface is sent to the HDMI switch is adjusted processing, and will be exported through adjusting the external vision signal of handling by the HDMI switch.
A kind of implementation method of ring way system of concatenation unit wherein, may further comprise the steps:
S1, the control command of concatenation unit receiving control device, control HDMI switch connection local video input port or ring messenger input port, obtain input signal, again according to control command, after second microprocessor processes, send described input signal to display unit and/or described input signal is sent to the ring messenger input interface of next concatenation unit;
S2, concatenation unit is communicated to next concatenation unit by the control command output interface with control command.
The implementation method of the ring way system of described concatenation unit, wherein, described step S1 further comprises and sends second microprocessor or next concatenation unit again to after by signal adjustment unit the external vision signal that is sent to the HDMI switch by ring messenger input interface being adjusted processing.
Ring way system and its implementation of concatenation unit provided by the invention, described concatenation unit comprise splicing fore device and splicing back-end device, and described splicing back-end device further comprises the HDMI switch.Can realize gating to local video signal or external vision signal, described vision signal comprises multiple form, and have very strong antijamming capability and good definition, and described control device can be controlled separately any one concatenation unit, greatly facilitates the flexibility of operation.
Description of drawings
Fig. 1 is the schematic diagram of the concatenation unit of the embodiment of the invention.
Fig. 2 is the concatenation unit connection diagram of the ring way system of the embodiment of the invention.
Fig. 3 is the schematic diagram of the ring way system of second embodiment of the invention.
Fig. 4 is the interface schematic diagram of control device of the monitor joined screen of the embodiment of the invention.
Fig. 5 is the flow chart of monitor joined screen execution mode of the present invention.
Embodiment
The invention provides a kind of ring way system of concatenation unit, possess multi-channel video signal Presentation Function and high-definition signal tiled display,, realize the independent operation of control device concatenation unit simultaneously by concatenation unit is encoded.
For making purpose of the present invention, technical scheme and effect clearer, clear and definite, below with reference to accompanying drawing and give an actual example that the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1, Fig. 1 is the schematic diagram of the concatenation unit of the embodiment of the invention.As shown in the figure, described concatenation unit comprises display unit, signal end daughter board, splicing fore device and splicing back-end device.Described display unit connects splicing fore device and splicing back-end device; Described signal end daughter board, splicing fore device and splicing back-end device are connected respectively.
Further, described display unit is used for display video signal; Described signal end daughter board comprises local video signal input port, the DVI input interface that is used to import external vision signal, the DVI output interface that is used to export external vision signal that are used to import local video signal, be used for the receiving control device transmission control command the control command input interface and be used for the control command of control device transmission is sent to the control command output interface of next concatenation unit.
Wherein, described local video signal input port connects low microprocessor, the DVI input interface is ring messenger input interface, connect the splicing back-end device, the DVI output interface connects the splicing back-end device for ring messenger output interface, external vision signal is the ring messenger, the control command input interface connects the splicing back-end device, is used to receive the external control instruction, and the control command output interface is used for described external control instruction output.In the present embodiment, described local video signal comprises the vision signal of CVBS, Y/C, YPbPr, VGA, HDMI and six kinds of forms of DVI; Further, local video signal can also comprise the vision signal of other types.Described control command input, output interface adopt the RS232 interface, have effects such as transmission is convenient, transmission range increases, shared property is good.
Described splicing fore device comprises first microprocessor, HDMI encoder and concatenation unit coding unit.Specifically, described first microprocessor connects the signal end daughter board, be used for converting local video signal to Low Voltage Differential Signal and be transferred to the HDMI encoder, first microprocessor has the ability of digital video signal processing, and the local video signal input port can directly link to each other with the pin of first microprocessor.Described first microprocessor can also be connected the information source in user-selected according to user's operational order, carries out Video signal processing.Described HDMI encoder connects first microprocessor, the Low Voltage Differential Signal that is used for that first microprocessor is transmitted carries out transform coding to be handled, convert the HDMI digital signal to,, it is controlled accurately to guarantee Control Software simultaneously to this HDMI encoding digital signals; If input is general analogue signal, the HDMI encoder becomes the HDMI signal with its digital coding, and encodes; If input is the HDMI digital signal, the HDMI encoder gets final product its coding output.Described concatenation unit coding unit is used for concatenation unit is encoded.
In the present embodiment, described concatenation unit coding unit is a toggle switch, and it has eight pins (PIN0 is to PIN7), can support 8 codings, and described eight pins are connected respectively to 8 I/O mouths of first microprocessor.When concatenation unit is carried out hardware encoding, control device sends the control command that reads the concatenation unit sequence number for each concatenation unit, the first microprocessor of concatenation unit reads eight pins (PIN0 is to PIN7) of toggle switch successively: wherein, high level is a 1(dial-up gating), low level is a not gating of 0(dial-up), toggle switch can be provided with arbitrarily, from 00000000(0), 00000001(1), until 11111111(255), totally 256 data, so these eight toggle switchs can be supported the coding of 256 concatenation units.The state of first microprocessor follow-up toggle switch reads binary data by 8 I/O mouths, and this storage is arrived in the appointment register.If when re-powering, the data that read and the data of register-stored can be compared, if inconsistent, updated stored data then.In the operation of serial-port process,, register is carried out addressing then according to serial port command, if the sequence number unanimity, response command then, if sequence number is inconsistent, response command not then, and, finish hardware encoding to concatenation unit with this sequence number of differentiating concatenation unit.
In the above-described embodiments, concatenation unit coding unit of the present invention is a toggle switch, and it is encoded to concatenation unit by hardware, so that determine the position of each concatenation unit at system's combination, but, in other embodiments, concatenation unit of the present invention also can adopt software coding.Particularly, described concatenation unit can be provided with an address storaging unit: store described concatenation unit corresponding sequence number, this address storaging unit has comprised discrimination bit and data bit, when control device conducts interviews to each concatenation unit, can read the sequence number of described concatenation unit, this sequence number is represented the position encoded of concatenation unit, realizes the control of system to each concatenation unit by sequence number.
Described splicing rear end comprises the HDMI switch and second microprocessor, wherein, described HDMI switch is used for the instruction according to control device, select external vision signal or local video signal information source as concatenation unit, simultaneously vision signal is isolated amplification, described HDMI switch connects HDMI encoder, second microprocessor, ring messenger input interface, ring messenger output interface and control command input interface.Particularly, the HDMI switch is 2 to advance 2 HDMI that go out and switch chips, comprise input of this machine vision signal and the input of ring messenger, and mosaic screen shows and the output of ring messenger, and the relevant information of output is kept in its inner two registers (EEPROM), comprise the logical output register of display register and ring, respectively to leading to two kinds of situations of output in requisition on display unit, showing and encircling.Described second microprocessor is used for the signal of HDMI switch output is carried out the vision signal processing, and is sent to the display unit demonstration.
Specifically, concerning single concatenation unit, it is by the instruction of control command input interface acceptance from PC, for the situation that signal need be shown on display unit, system carries out addressing to display register, according to addressing results, when the result is as when input with this machine vision signal, the HDMI switch sends by addressing register and goes code, and connects the local video input switch, and this machine vision signal is sent to display unit; When the result be with the ring messenger as when input, the HDMI switch sends by addressing register and goes code, and connects ring messenger input switch, will encircle messenger and be sent to display unit.In like manner, according to the instruction needs of system control device during with the logical output of hoop, system carries out addressing to encircling logical output register, according to addressing results, when the result is as when input with this machine vision signal, the HDMI switch sends by addressing register and goes code, and connects the local video input switch, with the logical output of this machine vision signal ring; When the result be with the ring messenger as when input, the HDMI switch sends by addressing register and goes code, and connects ring messenger input switch, will encircle that logical input signal ring is logical to be exported.In addition, when this machine vision signal has when a plurality of, can select by system control device control splicing fore device.
In addition, the splicing back-end device also is provided with a signal adjustment unit, and this signal adjustment unit connects the HDMI switch, is used for carrying out suitable adjustment to encircling the ring messenger that logical input interface is sent to the HDMI switch.Particularly, this signal adjustment unit recovers reduction and shaping filter according to the power and the integrality of input signal to signal, deliver to second microprocessor at last and do the processing of amplification tiled display, simultaneously if desired with the logical output of hoop, then signal is shielded processing and amplifying, parameters such as amplitude, clock and gain to the logical output register corresponding address of the ring of HDMI switch are adjusted in real time, complete are transferred to next concatenation unit with the HDMI digital signal is undistorted at last.
Please continue to consult Fig. 2, Fig. 2 is the schematic diagram of the ring way system of the embodiment of the invention.Draw for convenient, DVI input interface, DVI output interface are represented with DVI IN and DVI OUT respectively, control command input interface, control command output interface represent with RS232 IN and RS232 OUT respectively, and concatenation unit 9 is represented to the unit with unit 1, unit 2 respectively.As shown in the figure, the embodiment of the invention provides a kind of monitor joined screen that is made of 9 concatenation units, wherein, the RS232 IN of unit 1 is connected (in the present embodiment with control device, control device is PC), be used for the control command of receiving control device, the RS232 OUT of unit 1 is connected with the RS232 IN of unit 2, be used for to unit 2 transfer control instructions, the RS232 OUT of unit 2 is connected with the RS232 IN of unit 3, and the like, finish the reception and the transmission of 9 concatenation unit control commands; The DVI IN of unit 1 is connected with the DVI OUT of unit 9, and the DVI OUT of unit 1 is connected with the DVI IN of unit 2, and the DVI OUT of unit 2 is connected with the DVI IN of unit 3, and the like, realize the logical and splicing of ring of DVI vision signal.
Please continue to consult Fig. 3, Fig. 3 is the schematic diagram of the ring way system of second embodiment of the invention.As shown in the figure, described ring way system comprises 4 concatenation units, and vision signal of sending by control device 100 121 and control command 122 form ring in first concatenation unit 111, second concatenation unit 112, Three kinds of hors d'oeuvres order unit 113, the 4th concatenation unit 114 logical.
In the embodiment of the invention, adopt the control device of PC, be used to receive user's operation, and send relevant control command to each concatenation unit as whole system.It is equipped with pre-designed monitor splicing Control Software, the INTERFACE DESIGN and the code that can adopt VC++ to carry out write (also can adopt other forms of code and interface to design), be called " monitor joined screen Control Software " in the present embodiment, the control surface chart comprises the contents such as distributing position, numbering, feature operation viewing area of each concatenation unit as shown in Figure 4.Wherein, the feature operation viewing area comprises contents such as splicing function selecting frame, systemic-function choice box, unit function selecting frame, scenes function choice box; Splicing function selecting frame can adopt the mode of drop-down menu, comprise image source, splicing regions, splicing, full frame, option such as decompose, duplicate, wherein, the image source comprises unit, information source and channel options, concatenation unit can adopt the mode of drop-down menu, comprise unit 1, unit 2, unit 3, unit 9 amounts to nine options, and it is that signal at certain concatenation unit splices that the user can choose in this option any one, the control command that expression PC sends by image source drop-down menu at the PC end; The splicing regions choice box, the user can realize whole concatenation units or the wherein splicing of certain several concatenation unit by the operation of this choice box need being determined the unit area of splicing; The information source choice box is used for selecting from the multiple signal format of local information source or external information source for the user a kind of, as from CVBS_IN, and Y/C_IN, selection is a kind of among YPbPr, VGA, HDMI, the DVI; Demonstration on monitor joined screen can be divided into two kinds: ring is logical, and the concatenation unit that expression is chosen is the information source chosen of independent displaying all, promptly shows the same content; Splicing, the information source that the common tiled display of concatenation unit that expression is chosen is chosen promptly is combined into a width of cloth picture, and each concatenation unit only shows the part of information source picture.
After the user is good by above-mentioned control layout setting, " monitor joined screen Control Software " can be with user's setting, be encoded into order data according to the coded system of being appointed in advance, send the data to concatenation unit 1 by the control command input interface again, and each concatenation unit connects successively by control command input interface, control command output interface, so each concatenation unit can be received user's the order that is provided with.After each concatenation unit was received control command, system can carry out addressing to each concatenation unit, reads the sequence number of each concatenation unit.If the unit that the sequence number of concatenation unit and PC are corresponding is consistent, then carry out this unit operations, if inconsistent, undo then.
For selecting the ring intervisibility concatenation unit of signal frequently, if display mode is splicing, second microprocessor is just according to self concatenation unit sequence number, obtain oneself being positioned the position in the monitor joined screen, calculate should display video signal which part after, carry out the vision signal cutting again, vision signal after the cutting is carried out the full screen display of unit, all select the concatenation unit of external vision signal all can carry out Video signal processing in this manner, so just a complete tiled display of vision signal can be come out; If display mode is logical for ring, then from its DVI input interface receiving digital video signal, send display to show after the digital video signal that receives shown processing, like this, the concatenation unit of all external digital video signals of selection is all handled like this, separately complete picture of independent displaying.
Please continue to consult Fig. 4, the user shows three tunnel different vision signals by the concatenation unit 7 in the interface as shown in the figure, concatenation unit 8 and concatenation unit 9 if desired: unit 7 is AV, unit 8 is VGA, unit 9 is DVI, other 1-6 concatenation unit amplifies the DVI signal (tiled display) in the display splicing unit 9, then can be by the following realization that is provided with:
The AV interface of AV signal from the local video signal interface of concatenation unit 7 is input in the monitor joined screen system; The VGA interface of VGA signal from the local video signal interface of concatenation unit 8 is input in the monitor joined screen system; The DVI interface of DVI signal from the local video signal interface of concatenation unit 9 is input in the monitor joined screen system; The logical DVI of ring that remaining 1-6 unit input information source switches to this machine respectively is input in the monitor joined screen system.
The RS232 of control device output control interface is linked to each other with the RS232 IN of unit 1, and the RS232 OUT of unit 1 links to each other with the RS232 IN of unit 2, and the like, up to the RS232 OUT of unit 8 with till the RS232 IN of unit 9 links to each other.
Then, encode to concatenation unit, embodiment that can corresponding front concatenation unit adopts hardware encoding, can certainly adopt software coding, and is described respectively below:
Software coding: at user's setup menu, the sequence number of each concatenation unit is set respectively, the rule of setting is pressed from left to right, and order from top to bottom is promptly by 1,2,3; 4,5,6; 7,8,9 are provided with respectively, first 1 setup menu in the unit, by remote controller or other control systems (can be the control panel of PC or concatenation unit itself here) setting Arabic numerals 1, system automatically with storage in the address storaging unit of this concatenation unit, the numbering that unit 2-9 is set that uses the same method corresponds to 2,3,4 ... 9, finish software coding.
Hardware encoding: the toggle switch to each concatenation unit carries out hardware encoding, for example, concatenation unit 1 is set to 00000001, and concatenation unit 2 is set to 00000010 ... concrete process with reference to above-mentioned toggle switch hardware encoding.Can read above-mentioned binary signal by the first microprocessor of each concatenation unit during the PC addressing, and to differentiate with this be the sequence number of concatenation unit, promptly finish hardware encoding.
In the control interface of control device (PC), choose by splicing function selecting frame that the unit is 9 in the image source, the DVI information source is selected in the signal source, (native system is supported outside expansion to the channel selecting acquiescence, when matrix is expanded, concerning PC end software, only fabric protocol need be increased in " monitor joined screen control system ", then the serial ports control line is linked to each other PC earlier with matrix, again matrix is linked to each other with each concatenation unit serial connection), choose the concatenation unit 1,2 that needs splicing by the splicing regions choice box then, 3 ... 6, the selected change of all concatenation units that need splice is blue.
After setting is finished, select splicing by splicing function selecting frame, " the monitor joined screen control system " of PC end can be with user's setting, be encoded into order data according to the coded system of being appointed in advance, its instruction comprises guidance code, control word and data message, user's the order that is provided with send the data to concatenation unit 1 again, and each concatenation unit is connected successively with the control command output interface by the control command input interface, so all can be received in the 1-6 unit.After receiving data, each unit can conduct interviews to EEPROM by set addressing system, if the unit that unit number and PC are corresponding is consistent, the sequence number of the 1-6 unit that has promptly chosen the numbering that control shows with PC is consistent, then carry out this unit operations, other 7-9 cell encoding is inconsistent, undo then, and concrete implementation is as follows:
The AV signal that concatenation unit 7 receives in the local video input interface does not respond the splicing instruction, the AV vision signal in the independent displaying local video signal; The VGA signal that concatenation unit 8 receives in the local video input interface does not respond the splicing instruction, the VGA pcs signal in the independent displaying local video signal; The DVI signal that concatenation unit 9 receives in the local video input interface does not respond the splicing instruction, the DVI digital signal in the independent displaying local video signal.
(concatenation unit 9 switches by the HDMI switch DVI digital video signal that concatenation unit 1 transmits by its DVI input interface reception concatenation unit 9, realization is exported local DVI input signal by its DVI OUT), and be connected with the DVI IN of concatenation unit 2 by its DVI OUT output interface, digital signal transmission is arrived concatenation unit 2, concatenation unit 2 is transferred to concatenation unit 3 with this digital video signal by its DVI OUT output interface again, and the like, until this digital signal transmission is arrived concatenation unit 6, concatenation unit 1 then, concatenation unit 2, concatenation unit 3, concatenation unit 4 and concatenation unit 5 are numbered according to the concatenation unit of self respectively, obtain oneself being positioned the position in the monitor joined screen, calculate should display video signal which part after, carry out the vision signal cutting again, vision signal after the cutting is carried out the full screen display of unit, so just a complete tiled display of DVI digital video signal can be come out, be equivalent to concatenation unit 1, concatenation unit 2, concatenation unit 3, concatenation unit 4, DVI signal in 6 pairs of concatenation units 9 of concatenation unit 5 and concatenation unit amplifies demonstration, so, monitoring effect can be better.
Certainly, if the user needs other display mode, the operation of the Control Software by control device can realize that equally its principle is identical, just seldom gives unnecessary details at this.
Thus, the implementation method that we can obtain the ring way system of concatenation unit of the present invention mainly may further comprise the steps, as shown in Figure 5:
S1, the control command of concatenation unit receiving control device, control HDMI switch connection local video input port or ring messenger input port, obtain input signal, again according to control command, after second microprocessor processes, send described input signal to display unit and/or described input signal is sent to the ring messenger input interface of next concatenation unit;
S2, concatenation unit is communicated to next concatenation unit by the control command output interface with control command.
Further, described step S1 further comprises after signal adjustment unit is adjusted processing to the external vision signal that sends the HDMI switch by ring messenger input interface to and sends second microprocessor or next concatenation unit again to.
The invention provides ring way system and its implementation of concatenation unit, described concatenation unit comprises splicing fore device and splicing back-end device, and described splicing back-end device further comprises the HDMI switch.Can realize gating to local video signal or external vision signal, described vision signal comprises multiple form, and have very strong antijamming capability and good definition, and described control device can be controlled separately any one concatenation unit, greatly facilitates the flexibility of operation.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. a concatenation unit is characterized in that, described concatenation unit comprises the display unit that is used for display video signal, the signal end daughter board that is used for receiving inputted signal, splicing fore device and splicing back-end device; Described signal end daughter board, splicing fore device and splicing back-end device are connected respectively; Described display unit connects the splicing back-end device; Described splicing rear end comprises second microprocessor and HDMI switch, wherein:
The HDMI switch, connect described signal end daughter board, splicing fore device and second microprocessor, be used for according to control command one of them of external vision signal of selective reception and local video signal and as the information source of concatenation unit or as the signal output of the logical output of ring;
Second microprocessor is used to receive the signal that the HDMI switch sends, and sends display unit after treatment to.
2. concatenation unit according to claim 1 is characterized in that: described signal end daughter board comprises local video signal input port, the logical input interface of ring, the logical output interface of ring, control command input interface, control command output interface; Described splicing fore device comprises first microprocessor, HDMI encoder and concatenation unit coding unit; Wherein:
The local video signal input port is used to receive local video signal and outputs to first microprocessor;
Ring messenger input interface connects the HDMI switch, is used to receive external vision signal and outputs to the HDMI switch;
Ring messenger output interface connects the HDMI switch, is used to export the logical external vision signal of exporting of conduct ring that the HDMI switch is selected;
The control command input interface is used to receive the external control instruction and sends the HDMI switch to;
The control command output interface is used for described external control instruction output;
First microprocessor is used to receive local video signal, and converts local video signal to Low Voltage Differential Signal and be transferred to the HDMI encoder;
The HDMI encoder connects first microprocessor, is used to receive the Low Voltage Differential Signal that first microprocessor transmits, and Low Voltage Differential Signal is carried out transform coding handle, and the signal after will handling through transform coding is exported to the HDMI switch.
3. concatenation unit according to claim 1, it is characterized in that: described splicing back-end device also comprises signal adjustment unit, described signal adjustment unit connects described HDMI switch, the external vision signal that is used for ring messenger input interface is sent to the HDMI switch is adjusted processing, and will be exported through adjusting the external vision signal of handling by the HDMI switch.
4. concatenation unit according to claim 3 is characterized in that: described signal adjustment unit is used for according to the power and the integrality of the external vision signal of ring messenger input interface transmission it being recovered reduction and shaping filter.
5. the ring way system of a concatenation unit, the concatenation unit and the control device that comprise two or more, it is characterized in that described concatenation unit comprises display unit, signal end daughter board, splicing fore device and the splicing back-end device that is used for display video signal; Described signal end daughter board comprises local video signal input port, ring messenger input interface, ring messenger output interface, control command input interface, control command output interface; Described splicing fore device comprises first microprocessor, HDMI encoder and concatenation unit coding unit; Described splicing rear end comprises second microprocessor and HDMI switch; Wherein:
The local video signal input port is used to receive local video signal and outputs to first microprocessor;
Ring messenger input interface connects the HDMI switch, is used to receive external vision signal and outputs to the HDMI switch;
Ring messenger output interface connects the HDMI switch, is used to export the logical external vision signal of exporting of conduct ring that the HDMI switch is selected;
The control command input interface is used for the control command of receiving control device and sends the HDMI switch to;
The control command output interface is used for described external control instruction output;
First microprocessor is used to receive local video signal, and converts local video signal to Low Voltage Differential Signal and be transferred to the HDMI encoder;
The HDMI encoder connects first microprocessor, is used to receive the Low Voltage Differential Signal that first microprocessor transmits, and Low Voltage Differential Signal is carried out transform coding handle, and the signal after will handling through transform coding is exported to the HDMI switch;
Described HDMI switch is used for the control command according to control device, one of them of external vision signal of selective reception and local video signal and as the information source of concatenation unit or as the signal output of the logical output of ring;
Described second microprocessor is used to receive the signal that the HDMI switch sends, and sends display unit after treatment to;
Described control device is used to receive user's operation, sends control instruction corresponding.
6. the ring way system of concatenation unit according to claim 5, it is characterized in that: the ring messenger output interface of described concatenation unit is connected in series with the ring messenger input interface of next concatenation unit and the ring messenger output interface of all concatenation units joins end to end with the formation of ring messenger input interface, is used to realize that the ring of vision signal is logical.
7. the ring way system of concatenation unit according to claim 5, it is characterized in that: the control command input interface of first concatenation unit connects the control command output port of control device in described each concatenation unit, the control command output interface of all the other concatenation units is connected in series with the control command input interface of next concatenation unit, is used to realize that the ring of control command is logical.
8. the ring way system of concatenation unit according to claim 5, it is characterized in that: described splicing back-end device also comprises signal adjustment unit, described signal adjustment unit connects described HDMI switch, the external vision signal that is used for ring messenger input interface is sent to the HDMI switch is adjusted processing, and will be exported through adjusting the external vision signal of handling by the HDMI switch.
9. the implementation method of the ring way system of the described concatenation unit of claim 5 is characterized in that, may further comprise the steps:
S1, the control command of concatenation unit receiving control device, control HDMI switch connection local video input port or ring messenger input port, obtain input signal, again according to control command, after second microprocessor processes, send described input signal to display unit and/or described input signal is sent to the ring messenger input interface of next concatenation unit;
S2, concatenation unit is communicated to next concatenation unit by the control command output interface with control command.
10. the implementation method of the ring way system of concatenation unit according to claim 9, it is characterized in that described step S1 further comprises and sends second microprocessor or next concatenation unit again to after by signal adjustment unit the external vision signal that is sent to the HDMI switch by ring messenger input interface being adjusted processing.
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