CN102123248B - Splicing wall for monitors and splicing unit thereof - Google Patents
Splicing wall for monitors and splicing unit thereof Download PDFInfo
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- CN102123248B CN102123248B CN2010106186171A CN201010618617A CN102123248B CN 102123248 B CN102123248 B CN 102123248B CN 2010106186171 A CN2010106186171 A CN 2010106186171A CN 201010618617 A CN201010618617 A CN 201010618617A CN 102123248 B CN102123248 B CN 102123248B
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Abstract
The invention discloses a splicing wall for monitors and a splicing unit thereof, wherein the splicing unit of the splicing wall for the monitors comprises a display device, a signal terminal plate, a front-end splicing device and a rear-end splicing device. The splicing wall for the monitors has the function of displaying multiple paths of video signals; and realizes a control device can independently operates the splicing unit on the basis of encoding the splicing unit.
Description
Technical field
The present invention relates to the monitor joined screen technical field, particularly a kind of monitor joined screen and concatenation unit thereof that possesses multi-channel video signal Presentation Function and concatenation unit independent operation.
Background technology
Growing along with monitoring technique, the monitor large screen splicing is widely used 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 could realize the function of vision signal tiled display on monitor joined screen with the processing that the large screen splicing controller carries out vision signal, 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.
As mentioned above, existing monitor large-screen splicing wall can only show the vision signal of minority information source, can not show simultaneously the vision signal from a plurality of information sources, and needs to adopt the large screen splicing controller to carry out the processing of vision signal, and cost is higher.In addition, there are 2 obvious defects in existing monitor large-screen splicing wall system, and one can only splice common analog video signal, although be to lead to and connect with the VGA wire loop, is not the splicing of VGA signal, more can not realize the splicing of DVI digital signal; It two is can not the signal that splice be chosen at random, and can only pass through the common AV vision signal of VGA channel selecting.
Existing combination, the output signal of external equipment directly is connected with monitor, monitor itself do not encoded, just as display apparatus, very flexible.
In view of this, need to 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 a kind of monitor joined screen and concatenation unit thereof, to solve monitor joined screen of the prior art, can only show the seldom problem of the vision signal of way, and, by concatenation unit is encoded, realize the independent operation of control device to concatenation unit.
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 display unit, the signal end daughter board be used to receiving input signal, splicing fore device and the splicing back-end device for display video signal; 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 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, wherein:
The local video signal input port, connect first microprocessor, be used to inputting local video signal;
Ring messenger input interface, connect the splicing back-end device, be used to inputting external vision signal;
Ring messenger output interface, connect the splicing back-end device, be used to exporting external vision signal;
The control command input interface, connect the splicing back-end device, be used to receiving the control command of a control device transmission
The control command output interface, be sent to next concatenation unit for the control command by described control device transmission;
Described splicing fore device comprises: first microprocessor, HDMI encoder and concatenation unit coding unit; Wherein:
First microprocessor connects the signal end daughter board, for local video signal being converted to low-voltage differential signal transmission to the HDMI encoder, and the coding that reads concatenation unit from described concatenation unit coding unit;
The HDMI encoder connects first microprocessor, for Low Voltage Differential Signal is carried out to the transform coding processing, and the signal after transform coding is processed is exported to the splicing back-end device;
The concatenation unit coding unit, for encoding to concatenation unit.
Described splicing rear end comprises the second microprocessor and HDMI switch, wherein:
The HDMI switch, connect described HDMI encoder, the second microprocessor, ring messenger input interface, ring messenger output interface and control command input interface, for from ring messenger input interface, receiving external vision signal, from the HDMI encoder, receive local video signal, and according to control command, the signal of one of them information source as concatenation unit of the external vision signal of selective reception and local video signal or the logical output of conduct ring;
The second microprocessor, send display unit to after for the signal to the output of HDMI switch, processing.
Described concatenation unit, wherein, described concatenation unit coding unit is toggle switch, described first microprocessor is also be used to reading the dial-up setting of toggle switch, and the coding that obtains described concatenation unit according to described dial-up setting.
Described concatenation unit, wherein, described concatenation unit coding unit is a memory block of described concatenation unit, for the coding sequence number that receives and store described concatenation unit.
Described concatenation unit, wherein, described splicing back-end device also comprises signal adjustment unit, described signal adjustment unit connects described HDMI switch, for the external vision signal that ring messenger input interface is sent to the HDMI switch, adjusts processing.
Described concatenation unit, wherein, described signal adjustment unit recovers reduction and shaping filter for power and the integrality of the ring messenger according to the transmission of ring messenger input interface to it.
A kind of monitor joined screen, comprise two or more concatenation unit, and wherein, described concatenation unit comprises display unit, the signal end daughter board be used to receiving input signal, splicing fore device and the splicing back-end device for display video signal; 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 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; Wherein:
Described local video signal input port, connect first microprocessor, be used to inputting local video signal;
Described ring messenger input interface, connect the HDMI switch, be used to receiving external vision signal and sending described external vision signal to the HDMI switch;
Described ring messenger output interface, connect the HDMI switch, the external vision signal that sends be used to exporting the HDMI switch;
Described control command input interface, connect the HDMI switch, be used to receiving the control command of a control device transmission;
Described control command output interface, be sent to next concatenation unit for the control command by described control device transmission;
Described splicing fore device comprises: first microprocessor, HDMI encoder and concatenation unit coding unit; Wherein:
First microprocessor, for local video signal being converted to low-voltage differential signal transmission to the HDMI encoder, and the coding that reads concatenation unit from described concatenation unit coding unit;
The HDMI encoder, for Low Voltage Differential Signal is carried out to the transform coding processing, and export to the splicing back-end device by the signal after transform coding is processed;
The concatenation unit coding unit, for encoding to concatenation unit.
Described splicing rear end comprises the second microprocessor, HDMI switch and signal adjustment unit,
Described the second microprocessor, send display unit to after for the signal to the output of HDMI switch, processing;
Described HDMI switch, connect described HDMI encoder, the second microprocessor, ring messenger input interface, ring messenger output interface and control command input interface, for from ring messenger input interface, receiving external vision signal, from the HDMI encoder, receive local video signal, and according to control command, the signal of one of them information source as concatenation unit of the external vision signal of selective reception and local video signal or the logical output of conduct ring;
Described signal adjustment unit, connect described HDMI switch, for the external vision signal that ring messenger input interface is sent to the HDMI switch, adjusts processing.
Described monitor joined screen, wherein, described concatenation unit coding unit is for receiving and store the memory block of the coding sequence number of described concatenation unit in toggle switch or described concatenation unit.
A kind of monitor joined screen provided by the invention and concatenation unit thereof, the concatenation unit of described monitor joined screen comprise display unit, signal end daughter board, splicing fore device and splicing back-end device.Possess the multi-channel video signal Presentation Function, and, by concatenation unit is encoded, realize the independent operation of control device to concatenation unit.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the concatenation unit of the embodiment of the present invention;
Fig. 2 is the concatenation unit connection diagram of the monitor joined screen of the embodiment of the present invention;
Fig. 3 is the interface schematic diagram of control device of the monitor joined screen of the embodiment of the present invention;
Fig. 4 is the flow chart of monitor joined screen execution mode of the present invention.
Embodiment
The invention provides a kind of monitor joined screen and concatenation unit thereof, possess multi-channel video signal Presentation Function and high-definition signal tiled display, simultaneously by concatenation unit is encoded, realize the independent operation of control device to concatenation unit.
For making purpose of the present invention, technical scheme and effect clearer, clear and definite, the present invention is described in more detail referring to the accompanying drawing examples.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the schematic diagram of the concatenation unit of the embodiment of the present 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 for display video signal; Described signal end daughter board comprises be used to the local video signal input port of inputting local video signal, be used to the DVI input interface of inputting external vision signal, be used to the DVI output interface of exporting external vision signal, for the control command input interface of the control command of receiving control device transmission with for the control command by the control device transmission, be 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, for ring messenger output interface, connects the splicing back-end device, external vision signal is the ring messenger, the control command input interface connects the splicing back-end device, and be used to receiving the external control instruction, the control command output interface is for exporting described external control instruction.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.The input of described control command, output interface adopt the RS232 interface, have that transmission is convenient, transmission range increases, the good texts of commonality.
Described splicing fore device comprises first microprocessor, HDMI encoder and concatenation unit coding unit.Specifically, described first microprocessor connects the signal end daughter board, for converting local video signal to low-voltage differential signal transmission to the HDMI encoder, first microprocessor has the ability of digital video signal processing, and the local video signal input port can directly be connected 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 the processing of vision signal.Described HDMI encoder connects first microprocessor, for the Low Voltage Differential Signal that first microprocessor is transmitted, carry out the transform coding processing, convert the HDMI digital signal to, simultaneously to this HDMI encoding digital signals, to guarantee that controlling software controls accurately to it; If input is general analogue signal, the HDMI encoder becomes the HDMI signal by 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, for encoding to concatenation unit.
In the present embodiment, described concatenation unit coding unit is 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 to 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 1(dial-up gating), low level is not gating of 0(dial-up), toggle switch can arrange 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, read binary data by 8 I/O mouths, and these data stored into and specify in register.If while re-powering, the data that read and the data of register-stored can be compared, if inconsistent, upgrade the storage data.In the operation of serial-port process, according to serial port command, register is carried out to addressing, if sequence number is consistent, response command, if sequence number is inconsistent, response command not, and, with this sequence number of differentiating concatenation unit, complete the hardware encoding to concatenation unit.
In the above-described embodiments, concatenation unit coding unit of the present invention is toggle switch, and it is encoded to concatenation unit by hardware, in order to determine the position of each concatenation unit at the system combination, but, in other embodiments, concatenation unit of the present invention also can adopt Software Coding.Particularly, described concatenation unit can arrange an address storaging unit: store sequence number corresponding to described concatenation unit, 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 represents the position encoded of concatenation unit, by sequence number, realizes the control of system to each concatenation unit.
Described splicing rear end comprises HDMI switch and the second microprocessor, wherein, described HDMI switch is for the instruction according to control device, select external vision signal or the local video signal information source as concatenation unit, simultaneously vision signal is isolated to amplification, described HDMI switch connects HDMI encoder, the second microprocessor, ring messenger input interface, ring messenger output interface and control command input interface.Particularly, the HDMI switch is 2 to advance the 2 HDMI switching chips that go out, comprise the input of the 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 in requisition on display unit, showing and encircling, leading to two kinds of situations of output.Described the second microprocessor, carry out the vision signal processing for the signal to the output of HDMI switch, and be sent to the display unit demonstration.
Specifically, concerning single concatenation unit, it accepts the instruction from PC by the control command input interface, for the situation that signal need to be shown on display unit, system is carried out addressing to display register, according to addressing results, when result is to using the machine vision signal as when input, the HDMI switch sends and goes code by addressing register, connects the local video input switch, and the machine vision signal is sent to display unit; When result is to using the ring messenger as when input, the HDMI switch sends and goes code by addressing register, connects ring messenger input switch, will encircle messenger and be sent to display unit.In like manner, in the time of according to the instruction of system control device, hoop need to being led to output, system is carried out addressing to encircling logical output register, according to addressing results, when result is to using the machine vision signal as when input, the HDMI switch sends and goes code by addressing register, connects the local video input switch, by the logical output of the machine vision signal ring; When result is to using the ring messenger as when input, the HDMI switch sends and goes code by addressing register, connects ring messenger input switch, will encircle that logical input signal ring is logical to be exported.In addition, when the machine vision signal has when a plurality of, can control the splicing fore device by system control device and select.
In addition, the splicing back-end device also arranges a signal adjustment unit, and this signal adjustment unit connects the HDMI switch, for the ring messenger that ring messenger input interface is sent to the HDMI switch, carries out suitable adjustment.Particularly, this signal adjustment unit recovers reduction and shaping filter according to power and the integrality of input signal to signal, finally deliver to the second microprocessor and do the processing of amplification tiled display, if simultaneously need to be by the logical output of hoop, signal is shielded to amplify and process, the 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, finally complete are transferred to next concatenation unit by the HDMI digital signal is undistorted.
Please continue to consult Fig. 2, Fig. 2 is the concatenation unit connection diagram of the monitor joined screen of the embodiment of the present invention.For convenience of drawing, DVI input interface, DVI output interface represent 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 represents to unit with unit 1, unit 2 respectively.As shown in the figure, the embodiment of the present invention provides a kind of monitor joined screen that consists 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 2 transfer control instructions to unit, the RS232 OUT of unit 2 is connected with the RS232 IN of unit 3, the like, complete 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, the like, realize that the ring of DVI vision signal leads to and splicing.
In the embodiment of the present invention, adopt the control device of PC as whole system, be used to receiving user's control command, and send relevant control command to each concatenation unit.It is equipped with pre-designed monitor splicing and controls software, can adopt interface and the code that VC++ carries out to write (also can adopt other forms of code and interface to design), in the present embodiment, be called " monitor joined screen control software ", control surface chart as shown in Figure 3, comprise the contents such as distributing position, numbering, feature operation viewing area of each concatenation unit.Wherein, the feature operation viewing area comprises the contents such as splicing function choice box, systemic-function choice box, unit function choice box, scenes function choice box; Splicing function choice box can adopt the mode of drop-down menu, comprise image source, splicing regions, splicing, full frame, the option such as decompose, copy, 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 the user can be in PC end any one in choosing this option of drop-down menu of originate by image, represents that control command that PC sends is that signal for certain concatenation unit splices; The splicing regions choice box, the user can need determine the unit area of splicing by the operation to this choice box, realize whole concatenation units or the wherein splicing of certain several concatenation unit; The information source choice box is used for for the user a kind of from the multi-signal form of local information source or external information source, selecting, and as from CVBS_IN, Y/C_IN, select a kind of in YPbPr, VGA, HDMI, DVI; Demonstration on monitor joined screen can be divided into two kinds: ring is logical, and the concatenation unit that expression is chosen all independently shows the information source of choosing, and namely shows the same content; Splicing, the information source that the common tiled display of concatenation unit that expression is chosen is chosen, namely be combined into a width picture, and each concatenation unit only shows the part of information source picture.
After the user sets by above-mentioned control interface, " monitor joined screen control software " can be by user's setting, according to the coded system of appointing in advance, be encoded into order data, by the control command input interface, send the data to concatenation unit 1 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 arranges.After each concatenation unit was received control command, system can be carried 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, carry out this unit operations, if inconsistent, undo.
For selecting the ring intervisibility concatenation unit of signal frequently, if display mode is splicing, the second microprocessor is just according to self concatenation unit sequence number, obtain oneself being positioned the position in monitor joined screen, calculate should which part of display video signal after, carry out again the vision signal cutting, vision signal after cutting is carried out the full screen display of unit, all select the concatenation unit of external vision signal all can carry out in this manner the processing of vision signal, and tiled display that so just can vision signal is complete out; If display mode is logical for ring, from its DVI input interface receiving digital video signal, the digital video signal of reception is carried out sending display to show after Graphics Processing, like this, the concatenation unit of all external digital video signals of selection is all processed like this, separately complete picture of independent demonstration.
Please continue to consult Fig. 3, if the user needs to show the different vision signal in three tunnels by the concatenation unit 7 in interface as shown in the figure, concatenation unit 8 and concatenation unit 9: unit 7 is AV, unit 8 is VGA, unit 9 is DVI, other 1-6 concatenation unit amplifies the DVI signal (tiled display) in display splicing unit 9, can be by the following realization that arranges:
The AV signal is input in the monitor joined screen system from the AV interface the local video signal interface of concatenation unit 7; The VGA signal is input in the monitor joined screen system from the VGA interface the local video signal interface of concatenation unit 8; The DVI signal is input in the monitor joined screen system from the DVI interface the local video signal interface of concatenation unit 9; The logical DVI of ring that remaining 1-6 unit input information source switches to respectively the machine is input in the monitor joined screen system.
The RS232 of control device output control interface is connected with the RS232 IN of unit 1, and the RS232 OUT of unit 1 is connected with the RS232 IN of unit 2, the like, until the RS232 OUT of unit 8 is connected with the RS232 IN of unit 9.
Then, encode to concatenation unit, embodiment that can corresponding front concatenation unit adopts hardware encoding, can certainly adopt Software Coding, below is described respectively:
Software Coding: the user, menu is set, 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, namely by 1,2,3; 4,5,6; 7,8,9 arrange respectively, first in unit, 1 menu is set, by remote controller or other control systems (can be the control panel of PC or concatenation unit itself here) setting Arabic numerals 1, system stores data in the address storaging unit of this concatenation unit automatically, the numbering of the setting unit that uses the same method 2-9 corresponds to 2,3,4 ... 9, the 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.During the PC addressing, can read by the first microprocessor of each concatenation unit above-mentioned binary signal, and differentiate the sequence number as concatenation unit take this, namely complete hardware encoding.
in the control interface of control device (PC), by splicing function choice box, choosing unit in the image source is 9, the DVI information source is selected in the signal source, (native system is supported outside expansion to the channel selecting acquiescence, when matrix-expand, concerning PC end software, only fabric protocol need to be increased in " monitor joined screen control system ", then the serial ports control line first is connected PC with matrix, again matrix is connected with each concatenation unit serial connection), then by the splicing regions choice box, choose the concatenation unit 1 that needs splicing, 2, 3 ... 6, the selected change of all concatenation units that need to splice is blue.
After setting completes, by splicing function choice box, select splicing, " the monitor joined screen control system " of PC end can be by user's setting, according to the coded system of appointing in advance, be encoded into order data, its instruction comprises guidance code, control word and data message, user's the order that arranges send the data to concatenation unit 1, 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 again.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 namely chosen is consistent with the numbering that PC controls demonstration, carry out this unit operations, other 7-9 cell encoding is inconsistent, undo, and concrete implementation is as follows:
The AV signal that concatenation unit 7 receives in the local video input interface, do not respond the splicing instruction, the independent AV vision signal that shows in local video signal; The VGA signal that concatenation unit 8 receives in the local video input interface, do not respond the splicing instruction, the independent VGA pcs signal that shows in local video signal; The DVI signal that concatenation unit 9 receives in the local video input interface, do not respond the splicing instruction, the independent DVI digital signal that shows in local video signal.
(concatenation unit 9 is by the HDMI switching over for the 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 to concatenation unit 2, concatenation unit 2 is transferred to concatenation unit 3 by this digital video signal by its DVI OUT output interface again, the like, until this digital signal transmission is arrived to concatenation unit 6, then concatenation unit 1, 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 monitor joined screen, calculate should which part of display video signal after, carry out again the vision signal cutting, vision signal after cutting is carried out the full screen display of unit, tiled display that so just can DVI digital video signal is complete 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, at this, just seldom repeats.
Thus, we can obtain monitor joined screen implementation method of the present invention and mainly comprise the following steps, as shown in Figure 4:
S1, select concatenation unit, information source (local video signal or external vision signal), signal kinds, display mode by the control interface of control device;
S2, control command and vision signal that described concatenation unit receiving control device sends;
S3, described concatenation unit, according to the control command that receives, according to the information source that arranges in step S1 and signal kinds, connect corresponding interface;
S4, the display mode of selecting according to the user, carry out tiled display or ring to vision signal and hold high office and show.
Wherein, in described step S2, control command comprises the concatenation unit coding.
The invention provides a kind of monitor joined screen and concatenation unit thereof, the concatenation unit of described monitor joined screen comprises display unit, signal end daughter board, splicing fore device and splicing back-end device.Possess the multi-channel video signal Presentation Function, and, by concatenation unit is encoded, realize the independent operation of control device to concatenation unit.
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 (5)
1. a concatenation unit, is characterized in that, described concatenation unit comprises display unit, the signal end daughter board be used to receiving input signal, splicing fore device and the splicing back-end device for display video signal; 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 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, wherein:
The local video signal input port, connect first microprocessor, be used to inputting local video signal;
Ring messenger input interface, connect the splicing back-end device, be used to inputting external vision signal;
Ring messenger output interface, connect the splicing back-end device, be used to exporting external vision signal;
The control command input interface, connect the splicing back-end device, be used to receiving the control command of a control device transmission;
The control command output interface, be sent to next concatenation unit for the control command by described control device transmission;
Described splicing fore device comprises: first microprocessor, HDMI encoder and concatenation unit coding unit; Wherein:
First microprocessor connects the signal end daughter board, for local video signal being converted to low-voltage differential signal transmission to the HDMI encoder, and the coding that reads concatenation unit from described concatenation unit coding unit;
The HDMI encoder connects first microprocessor, for Low Voltage Differential Signal is carried out to the transform coding processing, and the signal after transform coding is processed is exported to the splicing back-end device;
The concatenation unit coding unit, for encoding to concatenation unit;
Described splicing rear end comprises the second microprocessor and HDMI switch, wherein:
The HDMI switch, connect described HDMI encoder, the second microprocessor, ring messenger input interface, ring messenger output interface and control command input interface, for from ring messenger input interface, receiving external vision signal, from the HDMI encoder, receive local video signal, and according to control command, the signal of one of them information source as concatenation unit of the external vision signal of selective reception and local video signal or the logical output of conduct ring;
The second microprocessor, send display unit to after for the signal to the output of HDMI switch, processing;
Described concatenation unit coding unit is toggle switch, and described first microprocessor is also be used to reading the dial-up setting of toggle switch, and the coding that obtains described concatenation unit according to described dial-up setting.
2. concatenation unit according to claim 1, it is characterized in that: described concatenation unit coding unit is a memory block of described concatenation unit, for the coding sequence number that receives and store described concatenation unit.
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, for the external vision signal that ring messenger input interface is sent to the HDMI switch, adjusts processing.
4. concatenation unit according to claim 3 is characterized in that: described signal adjustment unit recovers to reduce and shaping filter to it for power and the integrality of the external vision signal that transmits according to ring messenger input interface.
5. monitor joined screen, the concatenation unit that comprises two or more, it is characterized in that, described concatenation unit comprises display unit, the signal end daughter board be used to receiving input signal, splicing fore device and the splicing back-end device for display video signal; 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 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; Wherein:
Described local video signal input port, connect first microprocessor, be used to inputting local video signal;
Described ring messenger input interface, connect the HDMI switch, be used to receiving external vision signal and sending described external vision signal to the HDMI switch;
Described ring messenger output interface, connect the HDMI switch, the external vision signal that sends be used to exporting the HDMI switch;
Described control command input interface, connect the HDMI switch, be used to receiving the control command of a control device transmission;
Described control command output interface, be sent to next concatenation unit for the control command by described control device transmission;
Described splicing fore device comprises: first microprocessor, HDMI encoder and concatenation unit coding unit; Wherein:
First microprocessor, for local video signal being converted to low-voltage differential signal transmission to the HDMI encoder, and the coding that reads concatenation unit from described concatenation unit coding unit;
The HDMI encoder, for Low Voltage Differential Signal is carried out to the transform coding processing, and export to the splicing back-end device by the signal after transform coding is processed;
The concatenation unit coding unit, for encoding to concatenation unit;
Described splicing rear end comprises the second microprocessor, HDMI switch and signal adjustment unit,
Described the second microprocessor, send display unit to after for the signal to the output of HDMI switch, processing;
Described HDMI switch, connect described HDMI encoder, the second microprocessor, ring messenger input interface, ring messenger output interface and control command input interface, for from ring messenger input interface, receiving external vision signal, from the HDMI encoder, receive local video signal, and according to control command, the signal of one of them information source as concatenation unit of the external vision signal of selective reception and local video signal or the logical output of conduct ring;
Described signal adjustment unit, connect described HDMI switch, for the external vision signal that ring messenger input interface is sent to the HDMI switch, adjusts processing;
Described concatenation unit coding unit is for receiving and store the memory block of the coding sequence number of described concatenation unit in toggle switch or described concatenation unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106186171A CN102123248B (en) | 2010-12-31 | 2010-12-31 | Splicing wall for monitors and splicing unit thereof |
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| CN2010106186171A CN102123248B (en) | 2010-12-31 | 2010-12-31 | Splicing wall for monitors and splicing unit thereof |
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| CN102123248A CN102123248A (en) | 2011-07-13 |
| CN102123248B true CN102123248B (en) | 2013-11-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198810B (en) * | 2012-01-06 | 2015-05-27 | 江苏欧帝电子科技有限公司 | Manufacturing method of ultrahigh resolution high definition splicer |
| CN104092969A (en) * | 2014-07-25 | 2014-10-08 | 福建捷联电子有限公司 | Television wall splicing system and method based on Display Port |
| CN105141905B (en) * | 2015-08-14 | 2019-09-10 | Tcl新技术（惠州）有限公司 | A kind of joined screen system and its implementation |
| CN105376602A (en) * | 2015-11-28 | 2016-03-02 | 讯美电子科技有限公司 | Method and system for transmitting plurality of paths of video signals |
| CN108491695B (en) * | 2018-03-26 | 2022-02-22 | 威创集团股份有限公司 | Web project encryption method and device for spliced wall system |
| CN112291483B (en) * | 2020-10-29 | 2022-11-29 | 京东方科技集团股份有限公司 | Video pushing method and system, electronic equipment and readable storage medium |
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