CN207458548U

CN207458548U - LED display

Info

Publication number: CN207458548U
Application number: CN201721475539.8U
Authority: CN
Inventors: 李红化; 陈俊颜; 邱显益; 汤尚宽
Original assignee: GUANGZHOU SILICONCORE ELECTRONIC TECHNOLOGY Ltd
Current assignee: GUANGZHOU SILICONCORE ELECTRONIC TECHNOLOGY Ltd
Priority date: 2016-12-06
Filing date: 2017-11-08
Publication date: 2018-06-05
Anticipated expiration: 2027-11-08
Also published as: CN108074518A

Abstract

The utility model is related to a kind of LED display, including transmitter；It is coupled to multiple first receivers of transmitter；Multiple second receiver modules, wherein each second receiver module couples, at least one first receiver, each second receiver module includes multiple second receivers；Multiple LED driver groups, each LED driver group are coupled at least one second receiver, and each LED driver group includes multiple LED drivers；And at least one in multiple first receivers is connected in multiple second receiver moulds at least one second receiver in the block to transmit data therebetween by transformerless electric wire link.The utility model LED display, it is necessary to transformer and the quantity of Gigabit Ethernet port considerably reduce, LED display panel can will be sized for smaller, reduce the production cost of LED display panel, also reduce electromagnetic interference.

Description

LED display

The priority claim of the present utility model application is submitted on December 06th, 2016 in the U.S., Application No. US 15/370,712 right, all by reference to being generally introduced this to reach all purposes.

【Technical field】

The utility model is related to display technology field, more particularly to LED display more particularly to without transformer The LED display of electric wire link.The LED of the utility model is the abbreviation of English Light Emitting Diode, Chinese meaning Think of is " light emitting diode ".

【Background technology】

Light emitting diode（LED）It is widely used in display information and message.LED is the solid-state devices for converting electrical energy into light. Compared with other types of display panel, LED display panel provides higher luminance level and higher optical efficiency.Recently, LED display panel has been used in the manufacture of large-scale indoor or outdoors display panel and TV.

Design, manufacture and the operation of large LED display panel face many technological challenges.For example, the ruler of LED display panel Very little can be about 7.35 meters × 4.1 meters so big.For such big display panel, it is difficult to cross over LED in a synchronous manner Display panel sends data set to specified LED driver.Data set can include configuration control bit and pulsewidth modulation（PWM）Number According to.These data control brightness, color depth and the break-make of light-emitting diode display.PWM is English " Pulse Width The abbreviation of Modulation ", Chinese means " pulse width modulation ", referred to as " pulsewidth modulation ".

Figure 1A is the functional block diagram for the LED display 1 that the prior art has multiple video receiver cards 13, wherein each The video receiver card 13 is connected to multiple LED drivers 14.With reference to Figure 1A, LED display 1 include source video sequence 10A, Send box 12, multiple video receiver cards 13 and multiple LED drivers 14.In order to transmit data to designated groups LED driver 14 Collection, LED display 1 need the transmission box 12 and the multiple video receiver card 13.According to matching somebody with somebody for LED display It puts, the sum of video receiver card 13 can change.Video receiver card 13 via Gigabit Ethernet port 11 from send box 12 receive data.One group of LED driver 14 can use the video receiver card 13 being arranged in series to read data.Every group LED driver 14 corresponds to a video receiver card 13.Thus, increase with the quantity of LED driver 14, be assigned to described more The quantity of the Gigabit Ethernet port 11 of a video receiver card 13 also increases.

Figure 1B is the video receiver card 13a functional block diagrams for being connected to another video receiver card 13b, wherein described two A video receiver card is respectively connected to one group of LED driver 14a and 14b.The figure is two video receptions shown in Figure 1A The enlarged drawing of device card 13 and the LED driver 14 connected, this is the close-up shot description of the video receiver card of two links. Every other video receiver card in the multiple video receiver cards being arranged in series is configured in a manner of being shown in Figure 1B. Two video receiver cards are via GigaPHY（Hereinafter referred to as " GPHY "）Link connection, the link need video receiver card Transmitting terminal and receiving terminal on Gigabit Ethernet port and transformer；Increase with the quantity of video receiver card, video The quantity of GPHY links also increases between receiver card；Moreover, each video receiver card is needed for pixel-map Memory.With reference to Figure 1B, video receiver card 13a is by having for pixel-map and the vehicle-mounted frame buffer of buffer usage Field programmable gate array（FPGA）Device is realized.For a link configuration GPHY11 and transformer 11a, GPHY technologies are used Large-scale array LED drive chip needs substantial amounts of pin pin.

Fig. 2 is the functional block diagram of prior art LED display 1'.Include with reference to Fig. 2, LED display 1' at video Manage device 10, transmitter 11B, video receiver card 13 and multiple LED drivers 14.Video receiver card 13 via GPHY links from Transmitter 11B receives data, receives after being assigned to its data, video receiver card 13 distributes to the data received attached It is connected to multiple LED drivers 14 thereon.The distribution of such data need pixel-map with ensure the data initially transmitted by with It is expected that order is received and rebuild, to show the final image from source video sequence in LED display panel.

Substantial amounts of video receiver card 13 and port may be led to the problem of：First, video receiver is stuck in transmission Transformer part is used in device port or receiving port.The actual size of transformer limits the size of ultra-thin LED display panel； Second, using substantial amounts of transformer as high-frequency signal coupling device electromagnetic radiation, such as electromagnetism is caused to do in port It disturbs（EMI）；3rd, substantial amounts of video receiver card needs more suitching type dc-dcs, is difficult not only to be integrated into In LED main display boards, but also electromagnetic interference can be generated（EMI）；4th, further, multiple video receiver cards and with Its Gigabit Ethernet port connected is located in LED display panel, therefore adds the size of display；5th, in addition, greatly Amount Gigabit Ethernet port and link significantly increase the production cost of LED display panel.Therefore, it is necessary to one kind to overcome The LED display of disadvantages mentioned above.

【Utility model content】

The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and provide a kind of LED Display device, it is necessary to transformer and the quantity of Gigabit Ethernet port considerably reduce, LED display panel can be by size Smaller is made, reduces the production cost of LED display panel, also reduces electromagnetic interference.

The utility model solve the technical problem the technical solution adopted is that：

A kind of LED display is provided, including transmitter；It is coupled to multiple first receivers of the transmitter；It is multiple Second receiver module, wherein each second receiver module couples are at least one first receiver, Mei Gesuo Stating second receiver module includes multiple second receivers；Multiple LED driver groups, each LED driver group are coupled to In at least one second receiver, each LED driver group includes multiple LED drivers；It is and transformerless At least one in multiple first receivers is connected to multiple second receiver moulds in the block at least one second by electric wire link To transmit data therebetween on receiver.

The first all receivers and second receiver module all use transformerless electric wire link connection.

Via transformerless electric wire link between one or more second receiver mould adjacent second receivers in the block Connection.

The transformerless electric wire link is serializer/de-serializers（SerDes）Link.

The transformerless electric wire link does not include transformer.

Each the multiple second receiver includes phaselocked loop（PLL）.

Each the multiple second receiver does not include transformer.

The distance between multiple first receivers and multiple second receiver modules are both less than 4 meters.

The distance between adjacent second receiver in multiple second receivers is both less than 4 meters.

The transmitter is via gigabit Ethernet PHY（GPHY）It is connected to multiple first receivers.

Compared with the existing technology compared with the advantageous effect of the utility model LED display is：

Since the utility model only has the first receiver that transformer and Gigabit Ethernet port is needed to communicate with transmitter, And using transformerless electric wire chain between adjacent each second receiver between the first receiver and second receiver Connect, it is necessary to transformer and the quantity of Gigabit Ethernet port considerably reduce, the size of LED display panel can be made more It is small, reduce the production cost of LED display panel, also reduce electromagnetic interference.

In conclusion the utility model LED display, it is necessary to transformer and Gigabit Ethernet port quantity it is bright Aobvious to reduce, LED display panel can will be sized for smaller, reduce the production cost of LED display panel, also reduce electromagnetism Interference.

【Description of the drawings】

Figure 1A is the simplified basic block diagram for the LED display that the prior art has multiple video receiver cards, wherein often A video receiver card is connected to multiple LED drivers;

Figure 1B is the amplification simplified basic block diagram for the video receiver card that another video receiver card is connected in Figure 1A, Each video receiver card is connected to one group of LED driver;

Fig. 2 is the simplified basic block diagram of another LED display of the prior art；

Fig. 3 is the functional block diagram for the configuration for showing LED display;

Fig. 4 is the functional block diagram for the layered configuration for showing the LED display according to the utility model embodiment;

Fig. 5 is to show that first shown in Fig. 4 in LED display panel is arranged on according to the utility model embodiment to be received The functional block diagram of device and second receiver;

Fig. 6 be show according to one group of first receiver and second receiver of the utility model embodiment and they with it is multiple The functional block diagram of the connection of LED driver；

Fig. 7 is adjacent first receiver that is connected in series via transformerless electric wire link and multiple is connected to each institute State the functional block diagram of the LED driver of the first receiver；

Fig. 8 is two second receivers being connected in series via transformerless electric wire link and multiple is connected to each institute State the functional block diagram of the LED driver of the first receiver；

Fig. 9 is the functional block diagram for the configuration for showing another LED display；

Figure 10 is one of block diagram of structure for illustrating configuration data bag；

Figure 11 is the two of the block diagram for the structure for illustrating configuration data bag；

Figure 12 is definition graph as the three of the block diagram of packet structure；

Figure 13 A and 13B are the block diagrams for the change method for illustrating the first field information and the second field information；

Figure 14 is the principle block diagram for showing vertical synchronizing signal delay value calculating method；

Figure 15 is the schematic diagram of the configuration data modulation and its synchronization that show the utility model；

Figure 16 is principle process schematic diagram of the utility model using the method for LED display transmission packet, wherein The LED display includes transmitter, at least one first receiver and multiple second receiver modules.

【Specific embodiment】

The utility model is described in further detail with reference to each attached drawing.

The preferred embodiment of the utility model will now be described in more detail, in embodiments with cut line, be worth noting , similar or identical reference numeral or reference number refer to identical element.In this regard, each embodiment may have There is different forms, and should not be limited only to explanation proposed in this paper to explain.Correspondingly, below only by reference to some attached drawings To describe each embodiment to explain the various aspects of this specification.The term as used herein merely to description purpose, and It is not intended to be limited to scope disclosed herein.Term " comprising " and/or "comprising"（Verb form and/or present participle form）For Illustrate in the presence of specifying element, step, operation and/or the component of defined, but do not preclude the presence or addition of it is one or more other Element, step, operation and/or component.Term " first ", " second " etc. can be used for describing various elements, but be not restricted to this A little elements.These terms are only used to distinguish to distinguish a kind of element and another element.

The following explanation of embodiment is disclosed according to the utility model and combines each attached drawing, these aspects and/or other aspects It becomes apparent and is easier to understand for those of ordinary skill in the art.Each attached drawing describes the utility model and discloses Each embodiment, only for explanation purpose.From the following description, those skilled in the art will readily appreciate that, In the case of the principle disclosed described without departing substantially from the utility model, the structures and methods that the utility model illustrates may be employed Alternative embodiment.

The embodiment of the utility model is described with reference to 3~Fig. 8 of figure.Fig. 3 is to show the utility model LED display The functional block diagram of 100 configuration.Fig. 4 is the layered configuration for showing the LED display 100 according to the utility model embodiment Functional block diagram.Fig. 5 is to show that first shown in Fig. 4 in LED display panel is arranged on according to the utility model embodiment to be connect Receive device and the functional block diagram of second receiver.Fig. 6 is the one group of first receiver 120a shown according to the utility model embodiment With second receiver 130a6 and principle frame that they are connected with multiple LED driver 140a, 140b, 140c, 140d and 140e Figure.Fig. 7 is adjacent first receiver 130a1, the 130a2 and multiple companies being connected in series via transformerless electric wire link 150 It is connected to the functional block diagram of the LED driver 140 of each described first receiver 130a1,130a2.Fig. 8 is via transformerless Two second receivers 130a1,130a2 that electric wire link 150 is connected in series and multiple it is connected to each second receiver The functional block diagram of 130 LED driver 140.

With reference to Fig. 3, LED display 100 includes transmitter 110, multiple first receivers 120, multiple second receivers 130th, multiple LED drivers 140 and multiple transformerless electric wires 150.Embodiment according to the present utility model, LED display dresses Put 100 have compact structure because multiple transformerless electric wires 150 can be connected in transless it is the multiple First receiver 120 and the multiple second receiver 130.

For simplicity unless otherwise indicated herein, otherwise reference numeral 120 refers to multiple first receivers, and special The first fixed receiver may be expressed as behind reference numeral 120 plus a letter, such as 120a.Similarly, attached drawing mark Note 130 refers to multiple second receivers, and the second receiver module containing multiple second receivers is represented as in reference numeral 130 Below plus a letter, such as 130a, specific second receiver is represented as adding a word behind reference numeral 130 A female and number, such as 130a1.Similarly, reference numeral 140 refers to multiple LED drivers, and specific LED driver It may be expressed as including multiple LED drivers plus a letter and a number, such as 140a1 behind reference numeral 140 LED driver group may be expressed as 140a.

In the art, as shown in Figure 1B, box 12 is sent（It is not shown）Via GPHY links 11 by data transmission To video receiver card 13a and 13b.GPHY generally requires the electrical isolation between port device circuit, such as uses transformer 11a。

According to the disclosure of various embodiments of the utility model, the transformerless electric wire of Fig. 3 of the GPHY links 11 in Figure 1B 150 substitute.From the figure 3, it may be seen that for example, the multiple first receiver 120 one of those connect via transformerless electric wire 150 Be connected to the multiple second receiver 130 one of those；Preferably, the first all receivers 120 and second receiver 130 All connected via transformerless electric wire 150.Adjacent second receiver 130a and 130b is also via transformerless 150 phase of electric wire It connects.

Now, Fig. 3, Fig. 7 and Fig. 8 are refer to, transmitter 110 receives data, the video processor from video processor 10 10 include VCR players, video camera, HD-DVD players and/or satellite；Transmitter 110 is handled via data port from video Device 10 receives data；Data port includes high-definition media interface（English High-Definition Multimedia Interface, abbreviation HDMI）, HDMI only is selected for the purpose of illustration, and transmitter 110 can be via other types of Data port receives data.

The multiple first receiver 120 receives data from transmitter 110 and then the data is assigned to serial or parallel connection Multiple second receivers 130 of connection（Such as 130a and 130b）In respective position.After receiving data, each the multiple the Received data is further distributed to the multigroup LED driver 140 being attached to thereon by two receivers 130（Such as 140a and 140b）.Transformerless electric wire 150, which is configured in no Figure 1B to connect the multiple first in the case of transformer 11a, to be connect Receive device 120 and the multiple second receiver 130.

Transformerless electric wire 150 be transless in the case of can be used for functional block or electric wire in high-speed communication.Without change The electric wire 150 of depressor can in either direction convert data between serial data and parallel interface.Transformerless electric wire 150 It can be used for short distance link, which includes serializer/de-serializers（English is serializer/ Deserializer, abbreviation SerDes）Link.Transmitter 110 is usually located at the position for having a distance with the first receiver 120 It puts, such as up to 100 meters；Connection between 110 and first receiver 120 of transmitter is often by GPHY link establishments.First connects Device 120 and second receiver 130 is received to be located in the range of short distance, be, for example, less than 50 meters, less than 20 meters, less than 10 meters, less than 5 meters or It is connected less than 4 meters etc., and via transformerless electric wire 150.

In addition, transformerless electric wire 150 is expensive without GPHY, because transformer is not required in it.Transformerless electric wire 150, such as SerDes, it can be integrated into immediately in receiver asic chip and therefore can use smaller receiver ASIC cores Piece.With transformerless electric wire 150 is introduced, LED display panel can be with ASIC solutions as a whole.Moreover, using nothing The electric wire 150 of transformer reduces the size of the multiple first receiver 120 and the multiple second receiver 130 and anti- Come over and reduce the size of LED display 100.ASIC is English Application Specific Integrated The abbreviation of Circuit, Chinese mean application-specific integrated circuit；Integrated circuit circle ASIC be considered as it is a kind of for special purpose and The integrated circuit of design, the integrated circuit for referring to answer the needs of specific user's requirement and particular electronic system and designing, manufacturing, The characteristics of ASIC is the demand towards specific user, and ASIC has volume more in batch production compared with universal integrated circuit It is small, power consumption is lower, reliability improve, performance improve, confidentiality enhancing, cost reduction the advantages that.

SerDes is only an example of transformerless electric wire 150, and other short distance link technologies can be used for reality Existing transformerless electric wire 150.With reference to Fig. 4, the multiple first receiver 120a one of those via transformerless electricity Line 150 link to the multiple second receiver 130a1 one of those；Second receiver 130a1 is via transformerless electricity Line 150 links to its adjacent second receiver 130a2；First receiver 120 and second receiver 130 can be with serial or parallel connections It sets, and can be linked them using transformerless electric wire 150.

With reference to Fig. 3, Fig. 7 and Fig. 8, describe and shown using the LED display 100 of transformerless electric wire link 150 One of example.As an example, LED display 100, which receives, has 7.46Gbps（1920x1080x30x120）Bandwidth regards Frequency evidence.LED driver 140 has the clock rate of 6.4MHz；And SerDes has the clock rate of up to 307.2MHz. SerDes is used only as the non-limiting example of transformerless electric wire 150 herein.

With 7.46Gbps（1920x1080x30x120）The video data of bandwidth have 30 per pixel colors and from Video processor 10 receives.If with double word（32）Format analysis processing 30 more effectively and is easy in LED per pixel color It is handled at display device 100.If using 32 bit formats, 1/16 bandwidth may be lost（2）；In this case, it is It calculates, the actual bandwidth for spreading all over this video data is 7.96Gbps（1920x1080x32x120）, close to 8Gbps；However, because Additional header and inter-packet gap are needed for ether network packet, pending total video data will be more than 8Gbps；Such bandwidth needs Want at least nine GPHY passages；When using 9 GPHY passages, each GPHY passages carrying is transmitted to the multiple first and receives The 884.7Mbps of device 120（7.96Gbps/9）Data；DC balance can be used in the 884.7Mbps data that every passage is carried The coder transitions of code are SerDes；For SerDes technologies example link include PCI-e, SATA, USB3.0, RAPID I/O, CEI-6G-SR, DP, VbyOne, XAUI, SGMII etc.；After 8B/10B encoders, 884.7Mbps is converted into 1.106Gbps；To handle 1.106Gbps, 1.25Gbps SerDes, such as SGMII, can be used to carry all information.

In another example, the data transfer rate of 307.2Mbps rather than 1.25Gbps SerDes can be used；Pass through 307.2Mbps data transfer rates according to four SerDes ports of each the multiple first receiver 120, it is necessary to handle 1.106Gbps data.At the multiple second receiver 130, the data transfer rate of 307.2Mbps is converted by 10B/8B decoders Into 30.72MByte/sec.It is counted by D-word, obtains 7.68MHz（30.72M/4）；Herein, a D-word is exactly 32 Position, can carry 30 with 2 redundancies（10 RGB）；Therefore, 7.68MHz, which becomes, transfers pixel rate；Because LED drives The clock rate of dynamic device 140 is 6.4MHz, and the 7.68MHz pixel rates obtained by SerDes provide enough speed to cover Required 6.4MHz clock rates at LED driver 140；Such a clock rate allows DC to couple and simplifies PCB Plate.Each the multiple first receiver 120 and each second receiver 130 can carry out 8B/10B codings in transmitter side And carry out 10B/8B decodings in receiver-side.Therefore for part of retiming, each second receiver 130 can carry out 8B/10B encodes to send data to adjacent second receiver 130.The RGB of the utility model refers to three primary colors（Red is red, Green is green, and Blue is blue）.

8B/10B codes are the code book being mapped to byte data in 10 code books；Code book defines multiple K- The control routine of code；For example, D-code can represent data code, and K-code can represent control routine.Transformerless electricity Wired link, such as SerDes links can be used to be packaged in using K-code as frame and transmit to come to pack the agreement of frame, as K- Codes, for example, K28.5 is on idle（Primitive）；K27.7 is on starting-frame delimiter primitive；K29.7 is determined on postamble Boundary accords with primitive；And K28.3 is on vertical synchronization（VSYNC）Primitive.VSYNC is the abbreviation of English Vertical Sync, in Text means vertical synchronization or field synchronization.

As shown in fig. 7, Low Voltage Differential Signal of the transformerless electric wire link 150 using direct current coupling（LVDS）Technology and The wide phaselocked loop of low frequency（PLL）.Source clock is provided and along transformerless electric wire link by the multiple first receiver 120 150 transfer.Transformerless electric wire link 150 is connected to the PLL 131 being arranged in second receiver 130a1.LVDS is English The abbreviation of literary Low-Voltage Differential Signaling, Chinese mean Low Voltage Differential Signal；PLL is English The abbreviation of Phase-Locked Loop, Chinese mean phaselocked loop or phase-locked loop.

PLL 131 is the control system that a generation exports signal, the phase of the phase and input signal of the output signal Position is related；Although for example, there are several possible configurations, when electronic circuit is made of variable oscillator and phase detectors It is easy to initially visualize；Oscillator generate periodic signal, and phase detectors by the phase of that signal with input week Phase signal is compared, so as to adjust oscillator to keep matched phase；Output signal is compared back to input signal More referred to as backfeed loop, because output feeds back to input and forms a Xun Huan.

PLL 131 provides required clock for inside LVDS receiver/transmitter circuit in second receiver 130a1, Needed for all the first subsequent receivers being linked at for adjacent second receiver 130a1 and series connection in receiver chip chain provide Clock.The PLL 131 of second receiver 130a1 also generates low-jitter clock for next receiver chip 130a2.Except nothing Outside the electric wire link of transformer, any two adjacent second that this framework needs not be along the receiver chip chain being arranged in series connects Receive the additional components between device 130a1 and 130a2（Such as transformer）, i.e., the receiver chip that is arranged in series in the utility model It is transformer 11a in no Figure 1B, therefore, this practicality between the adjacent second receiver 130a1 and 130a2 of any two of chain This new framework eliminates many GPHY ports and many transformers；It is the multiple by eliminating GPHY ports and transformer First receiver 120 and the multiple second receiver 130 can be contracted by size, and production cost also reduces, and cause LED display panel can become ultra-thin LED display panel.

As shown in Figure 3 and Figure 4, the first receiver 120 is coupled to transmitter 110, and video processor 10 is connected via HDMI To transmitter 110, HDMI is selected merely for the purpose illustrated；Other Linktypes can be used for video processor 10 with passing Defeated device 110 connects.Transmitter 110 sends various signals and data from content sources to the first receiver 120.First receiver 120 can have multiple input and output port（It is not drawn into）, these ports are connected to transmitter 110.When the first receiver 120 with When transmitter 110 communicates, each input and output port can make data transfer rate of the five classes/Class 6 cable with Gigabits per second.The One receiver 120 may include L the first receivers, and L is quantity, and L are exactly multiple meanings, merely for the purpose illustrated And as shown in figure 4, the first receiver 120 include nine the first receivers, as 120a, 120b, 120c, 120d, 120e, 120f, 120g, 120h and 120i.

As shown in figure 4, second receiver 130 is coupled to corresponding first receiver 120 in parallel；Second connects It receives device 130 and receives various signals and data from the first receiver 120, and be transmitted to LED driver 140.

As shown in figure 4, second receiver 130 can have N number of second receiver module, N is quantity, and N number of is exactly multiple The meaning；For example, as shown in Figure 4 and Figure 5, the tool of second receiver 130 there are four second receiver module 130a, 130b, 130c and 130d。

As shown in figure 4, each in L the first receivers 120 is coupled to N number of second receiver module with parallel way In each；For example, the first receiver 120a is coupled in four second receiver modules 130a, 130b, 130c and 130d Each；N number of second receiver module, such as 130a, 130b, 130c and 130d, can coupled in parallel to the first receiver 120a.

Access protocol is multiplexed using time domain multiplex（time domain multiplexing division access protocol）, the first receiver 120a send data to its coupled in parallel four second receiver module 130a, 130b, 130c and 130d.The second receiver module of coupling is sent data to using the first receiver of time-domain multiplexed 120a；Then, often The gap information of a second receiver module 130a, 130b, 130c and 130d retrieval its own is assigned to its number to handle According to.

N number of second receiver mould it is in the block each, such as 130a, 130b, 130c and 130d, it may include M second is received Device, such as 130a1,130a2,130a3,130a4,130a5 and 130a6, M is quantity, and M are exactly multiple meanings；M second connects Receiving device can be arranged in series.Therefore, for the multiple first receiver 120 and second receiver 130, there is L first to connect Receive device 120 and L × M × N number of second receiver 130.Second receiver 130, which can be configured to, supports full content cycle illumination （FCCL）, nominal data and γ tables correction (gamma table correction), FCCL is English full content cycle lighting Abbreviation, Chinese mean full content cycle illumination.

As shown in fig. 7, low-voltage differential signal can be used in each first receiver in the first receiver 120（LVDS） Form to second receiver 130 transmit data.LVDS can be transmitted under 307.2MHz signal rates, and works as and uses 8B/10B During coding, actual data transfer rate may be about as 245.76M；8B/10B codings propose each eight bit word for transferring input downwards It saves and is encoded into the cataloged procedure of ten code-groups；Each eight bit byte is arranged as according to position, one code group name is provided Claim.

Fig. 3 and configuration shown in Fig. 4 have technical advantage, because it only needs less transformer and gigabit Ethernet Port.Prior art example as shown in Figure 1A, each receiver 13 be required for a transformer and a gigabit with Port is netted very much, a large amount of transformers and Gigabit Ethernet port can generate EMI and occupy valuable space.However, according to this reality With new, only the first receiver 120 needs transformer and Gigabit Ethernet port to communicate with transmitter 110, in other words, Only L the first receivers 120 need transformer and Gigabit Ethernet port rather than L ×（M×N）A receiver needs Transformer and Gigabit Ethernet port.That is because as shown in figure 3, each first receiver 120（It is known as bridge in Fig. 3 Connect chip）Low-voltage differential signal can be used（LVDS）Form to second receiver 130（It is known as receiver chip in Fig. 3）It passes Transmission of data rather than pass through Gigabit Ethernet port；Correspondingly, there is two kinds of acceptor unit and use LVDS lattice Formula communicates between them can reduce the quantity of transformer and Gigabit Ethernet port.Another advantage according to the present utility model Asic chip is can be replaced for conventional sending card, the first receiver card and second receiver card, occupies relatively small sky Between；Therefore, the LED display panel of LED display according to the present utility model can be configured to structure closely.

As shown in figure 4, LED driver 140 is electric device, electricity or signal are adjusted to LED or LED goes here and there.Each Two receivers such as second receiver 130a1, are coupled to each in O LED driver group, as 140a, 140b, 140c, 140d and 140e, O are quantity, and O are exactly multiple meanings.Each in O LED driver group, such as 140a, including P LED driver, such as 140a1,140a2 and 140a3, P is quantity, and P are exactly multiple meanings.In other words, second receiver First second receiver 130a1 of 130 first 130 a of second receiver module is coupled to 15 LED drivers（Five A LED driver group × tri- LED driver）；LED driver group 140a, 140b, 140c, 140d and 140e coupled in parallel are extremely Second receiver, such as second receiver 130a1；LED driver 140a1,140a2 and 140a3 are arranged in series.

Fig. 5 is to show the first receiver 120 and second receiver 130 in LED display panel（It is not shown）In setting Functional block diagram.As an example, LED display panel can have the resolution ratio of 1920 × 1080 pixels.According to the present utility model one A aspect as shown in Figure 4 and Figure 5, there is nine the first receivers, as 120a, 120b, 120c, 120d, 120e, 120f, 120g, 120h and 120i；Four second receiver modules, such as 130a, 130b, 130c and 130d, coupled in parallel to the first receiver 120a；Each second receiver module, such as 130a, 130b, 130c and 130d, including six second receivers, as 130a1, 130a2,130a3,130a4,130a5 and 130a6.Since the first receiver 120 and second connects in the case of no transformer It receives device 130 to may be provided at as chip part in display device, therefore the size of LED display 100 can be minimized, so as to Greater compactness of LED display panel can be produced.

Transmitter 110 can be sending card, send box or have appointing in the personal computer of Gigabit Ethernet port A kind of what form.Multiple transmitters 110 can be arranged on the outside of LED display panel.Alternatively, transmitter 110 can be lucky ratio Special port input and LVDS ports and clock and data recovery（CDR）Output, can realize in FPGA or/and ASIC；In this feelings Under condition, transmitter 110 can also be arranged in LED display panel.CDR is the abbreviation of English Clock Data Recovery, in Text means clock and data recovery.FPGA is the abbreviation of English Field Programmable Gate Array, and Chinese is meant " field programmable gate array ".

LED display panel may include multiple independent LED pixels and processor, and multiple independent LED pixels may be constructed LED pixel array.Inconsistent between these components causes the variation of the color and brightness of such as whole display, thus needs Calibration process.

After calibration process, calibration data can be stored in flash memory so that the requirement according to controller, which is in, to be added During the electric stage, calibration data can be used as the reference data of each LED driver 140, to make the color of LED display panel and bright Degree is evenly.

Fig. 6 is to show the first receiver 120a, first second receiver mould the 6th second receiver 130a6 in the block With the detailed schematic block diagram of a device in LED driver 140.Referring to Fig. 4, the first receiver 120a can by first, Second, the 3rd, the 4th and the 5th second receiver 130a1,130a2,130a3,130a4 and 130a5 are coupled to 130a6.Fig. 6 is merely illustrated is coupled to the 6th second receiver 130a6 by the first receiver 120a.6th second connects It receives device 130a6 and is coupled to five LED driver groups 140a, 140b, 140c, 140d and 140e.For purposes of illustration, only to Six second receiver 130a6 are described, however, in second receiver 130a1,130a2,130a3,130a4 and 130a5 Each can have the function of the same or similar each other.6th second receiver 130a6 includes processor 130a6p, processor 130a6p may include register memory；Processor 130a6p and register memory may be coupled to first memory 130a6m1,130a6m2,130a6m3,130a6m4 and 130a6m5；First memory 130a6m1,130a6m2,130a6m3, 130a6m4 and 130a6m5 are arranged in parallel each other, and with static RAM（SRAM）.SRAM is English The abbreviation of Static Random Access Memories, Chinese mean static RAM.

With reference to Fig. 3, data distribute the pixel-map for needing the image sent for initial video processor 10, in LED Display panel（It is not shown）Upper appearance is constant.With reference to Figure 1A, in the prior art, pixel-map is by transmission box 12 and video receiver Card 13 performs.With reference to Fig. 3, pixel mapping function is placed in transmitter 110 by the utility model.

Fig. 9 is the functional block diagram for the configuration for showing another LED display 101.LED display includes transmitter 110th, multiple first receivers 120, multiple second receivers 130 and multiple LED drivers 140.Transmitter 110 includes memory 111 and pixel-map consult table 113.

Fig. 9 shows the pixel-map algorithm of presently disclosed intertexture.Pixel is sent to transmitter by video processor 10 110.Within frame buffer time, a small amount of pixel data is saved in the position calculated in memory 111 with interleaving mode, described Memory 111 is the double data rate Synchronous Dynamic Random Access Memory in transmitter 110（DDR SDRAM）.Then The pixel data to interweave that stores in frame buffer is removed and is sent to the first receiver 120；By expected transmission The pixel data that position interweaves is sent to it in each second receiver 130a and/or 130b from the first receiver 120 Respective position.When receiving the pixel data to interweave, second receiver 130a or 130b is by data relay forwarding to final Place is specified, such as final specify is located as LED driver 140a or 140b.

Configuration in Fig. 9 has technical advantage in the following aspects compared with prior art.In the prior art, each Video receiver card is responsible for pixel mapping function, and therefore, each video receiver card needs sizable external memory；Phase Instead, as shown in figure 9, the memory 111 in transmitter 110 is responsible for pixel mapping function, therefore, second receiver specially now 130 need not be equivalent to the memory of memory 111.

Link between first receiver 120 and second receiver 130 is time domain subdivision time division multiple access protocol；Therefore, make With time-domain multiplexed by data broadcasting to medium.Each second receiver 130 be configured to the gap information of retrieval its own with Just handled.This mechanism can be used in shared bus or radio configuration.Connection can retime to keep wrapping with point-to-point Include the fair speed of the transformerless electric wire link 150 of SerDes.Therefore, the mechanism for automatic addressing is necessary to make The time slot of its own can be retrieved by obtaining each second receiver 130.

The pixel-map of intertexture refers to the pixel-map using the method to interweave.It, need not picture in LCD display system Element mapping or the pixel-map to interweave, because the video data from video processor 10 is with from the suitable of the first row a line to the end Sequential mode carries, to complete a frame；LCD is the abbreviation of English Liquid Crystal Display, and Chinese means liquid crystal Display.However, on LED display system 101, the video data from video processor 10 is not directly connected to final LED display panel；Instead, video data is needed through transmitter 110（Send box）, the first receiver 120（Bridging chip）, Two receivers 130（Receiver card）It is allocated with LED driver 140；Therefore, in LED display system 101, video data Multiple data sectionals are decomposed into from transmission end；The multiple data sectional recovers to form complete image in receiving terminal；This process The pixel-map referred to as to interweave；The pixel-map of intertexture can be mapped at the first receiver 120 by automatic address to carry out；First Receiver 120 can transmit complete frame buffer so that it can be distributed via data channel.

With reference to Fig. 9, video data is sent to transmitter 110 from video processor 10 first（Send box）.It is being previously described Interleaving mode in, data resolve into be segmented and be stored in memory 111, the memory is usually DDR SDRAM, DDR SDRAM are the contractings of English Double Data Rate Synchronous Dynamic random-access Memory It writes, Chinese means double data rate Synchronous Dynamic Random Access Memory.Memory 111 is stored in the pixel data of intertexture In before, the pixel data that each interweaves by pixel-map consult table 113, the pixel-map consult table 113 for database simultaneously And with predefined sequential storage pixel data.If in the case of no pixel-map consult table 113, the pixel number of intertexture According to can in a random basis be stored in memory 111, so that the first receiver 120, second receiver 130 and one group of LED Driver 140 can not can recognize that the data forwarded to it.For example, as the pixel_data_to_ in the pixel data to interweave Port_0 from video processor 10 be sent to transmitter 110 when, pixel data pixel_data_to_port_0 initially passes through picture Element maps consult table 113 and is given unique address；Then, there is the pixel data pixel_ of the unique address of attachment Data_to_port_0 is stored in memory 111；Then, there is the pixel data pixel_data_ of the unique address of attachment To_port_0 is now from transmitter 110（Send box）In memory 111 be sent to the multiple first receiver（Bridge core Piece) 120；After each first receiver 120 receives data, each first receiver 120 passes data to specified Second receiver 130；After the second receiver 130 specified receives data, the second receiver 130 specified forwards the data to Multiple LED drivers 140 that the final place of specifying specifies.The side that data receiver and forwarding had all previously been described with the utility model Formula occurs.

Figure 10 is the block diagram for the structure for illustrating configuration data bag 200.Configuration data bag 200 is segmented including comma 202, first 204th, the 206, the 3rd segmentation 208 of the second segmentation and the 4th segmentation 209, second segmentation 206 include payload.Data packet There are one D-word for 200 tools（32）Form can be 40 after 8B/10B codings.Comma 202 be used for fill up valid frame it Between gap.Multiple commas 202 can be inserted between frames.First segmentation the 204, second segmentation 206 and the 3rd segmentation 208 are to be passed Data type.Frame is by the first segmentation 204（SOF）Encapsulation, and the 3rd 208 (EOF) of segmentation can be made of a D-word.Second Segmentation 206 can have multiple D-word.

First segmentation 204, it may for example comprise on the information of automatic address, can be used for finding in relation to the final of data Title；First segmentation 204 can be by 4 bytes（D-word）It forms, the first segmentation 204 includes start of frame delimiter 204a, field is believed Breath collection 204b, target receiver chip information 204c and data pattern information 204d；Starting-frame delimiter 204a is K-code （K27.7）；Field information collection 204b is defined as chain ID, and chain ID is 0 since the first receiver 120, retimed For journey with while sending adjacent second receiver 130 to, logic value of retiming adds 1（Or numerical value subtracts 1）；Target receiver core Piece information 204c has target receiver chip id；Data pattern information 204d includes defining payload specific item device for mark and lattice The data type information of formula.First segmentation 204 include from the first receiver 120 to LED driver 140 it is final specify from letter Breath.4th segmentation 209 includes vertical synchronizing signal data；130 each of second receiver can use the 4th point The vertical synchronization action of section 209.

With reference to Figure 11 and Figure 12, another example of data packet 210 and 220 is described, the data packet is including configuring number According to bag 210 and/or image data bag 220.Figure 11 is the block diagram for the structure for illustrating configuration data bag 210.Figure 12 is definition graph picture The block diagram of the structure of data packet 220.PWM count evidence, configuration register data and Flash data can be received from each first Device 120 is transferred to multiple second receivers 130.It is important that it is driven in a synchronous manner to specified second receiver or LED Device transmits this data.Figure 11 and Figure 12 shows for data being transferred to from the first receiver 120 specify in a synchronous manner The packet structure of two receivers 130.In a similar manner, data are transferred to LED driver 140 from second receiver 130.

Each configuration data bag 210 includes the segmentation of comma 212, first 214, second segmentation 216 and the 3rd segmentation 218； Each image data bag 220 includes the segmentation of comma 222, first 224, second segmentation 226 and three segmentations 228.Configuration data bag 210 Configuration data and image data are included respectively with image data bag 220.Image data includes PWM and flash memory, LED drivings The configuration of device and control data.Due to configuration data bag 210 with image data bag 220 with similar data structure, for letter Just for the sake of, configuration data bag 210 and image data bag 220 are described together below.

The comma 212 of configuration data bag 210 and the comma 222 of image data bag 220 are special bit sequences, as data The lead code of bag；It is similar with what it is for code-group for the symbol of ordered set, code-group is written as/Dx.y/ or/Kx.y/, such as scheme Shown in 8 and Fig. 9.Although Figure 11 and Figure 12 describe 4xcomma, only it is for illustrative purposes.According to the utility model The embodiment of specification can have, such as 5xcomma, 6xcomma, 7xcomma, 8xcomma and 10xcomma.

Particularly, the ordered set of K28.5 is in the comma 212 of configuration data bag 210 and the comma 222 of image data bag 220 In be used as first generation code character；K28.5 is pre-defined unique data pattern；It will not occur during processing data packets The reception operation of K28.5, unless there are data errors；Therefore, K28.5 can be with specific ordered set（It is for example, idle or configuration Starting point）It is used together.

Configuration data bag 210 first segmentation 214 include starting-frame delimiter 214a, field information collection 214b, 214c and Data pattern information 214d；First segmentation 224 of image data bag 220 also includes starting-frame delimiter 224a, field information collection 224b, 224c and data pattern information 224d.Data packet on electric wire is called frame, is made of binary data.Configuration data The starting-frame delimiter of the first segmentation 224 of the starting-frame delimiter 214a and image data bag 220 of first segmentation 214 of bag 210 224a indicates the starting point of bag frame.It will in detail be retouched with reference to Figure 11 and 12 couple of field information collection 214b, 214c, 224b and 224c It states.Data pattern information 214d and 224d point out that data message is configuration data or image data.

Second segmentation 216 of configuration data bag 210 and the second segmentation 226 of image data bag 220 all include data message； For example, configuration data bag 210 second segmentation 216 include configuration information, the configuration information include index and operation information and Configuration data；For example, operation information includes read/write instruction；Index information is assigned to second receiver 130 still including data packet LED driver 140；Configuration data includes detailed configuration data, and can be with member-retaining portion configuration data space in case in the future It uses.Second segmentation of image data bag 226 includes image data, such as R-G-B（RGB）Data.

Configuration data bag 210 the 3rd segmentation 218 include frame end delimiter 218a, field information collection 218b, 218c and Data pattern information 218d；3rd segmentation 228 of image data bag 220 also includes frame end delimiter 228a, field information collection 228b, 228c and data pattern information 228d.3rd segmentation 218 and 228 has similar knot with the first segmentation 214 and 224 Structure.Frame end delimiter 218a and 228a indicate the terminal of bag frame.

With reference to Figure 11 and Figure 13 A, field information collection 214b, 214c, 218b and 218c are described.The field letter of first segmentation Configuration data bag in breath collection 214b and 214c and the configuration data bag in field information the collection 218b and 218c of the 3rd segmentation have There are identical structure and numerical value.Configuration data bag in field information the collection 214b and 214c of first segmentation is only described below.The Configuration data bag in field information the collection 214b and 214c of one segmentation includes the first field information 214b and the second field information 214c。

First receiver 120 can initially set the first field information 214b and of " K27.7_SCT " and " K29.7_SCT " Two field information 214c.One embodiment according to the present utility model, for example, the first receiver 120 is by the first field information 214b is arranged to zero, the second field information 214c is arranged to 0,1,2,3,4 and 5, each numerical value corresponds respectively to second and connects Receive device 130 one of those, six of which second receiver 130 is arranged in series, and first second receiver 130a receives first Its value is simultaneously added 1 by the zero of field information 214b.Then, first second receiver 130a is received to next second second Device 130b transmits the numerical value 1 and its value is added 1 again；Each second receiver 130 compare the first and second field information 214b and Whether 214c matches.If the first and second field information 214b and 214c are matched, 130 received data packet of second receiver； If the first and second field information 214b and 214c are unmatched each other, second receiver 130 does not receive the data packet.This Data and control instruction that the warp of second receiver 130 correctly distributes are distributed in sample, the reception of second receiver 130.For example, this is assisted View can be used for be serially connected up to 256（2⁸）A second receiver；However, it is not limited to the above example for the quantity, example Such as, if selection represents field information with 12, this agreement can be used for be serially connected up to 4096（2¹²）A second Receiver.The address of each second receiver and the initial automated programming of data are to be matched with the first receiver 120.

For example, referring now to Figure 11 and Figure 13 A, the first receiver is connected in T1, first second receiver 130a1 120a, first second receiver 130a1 identify that the first character segment value of first " K27.7_SCT " is 0, second field Value or 0；Since first character segment value is matched with second field value, first second receiver 130a1 is received at first The data included after K27.7_SCT, first character section is replaced by adding 1, and amended content is sent to next Second second receiver 130a2.In T2, second second receiver 130a2 of first second receiver 130a1 is connected to Check the first character segment value of K27.7_SCT, i.e., 1 and second field value and 1；Due to first character segment value and second The matching of a field value, the data that second second receiver 130a2 reception includes after second K27.7_SCT, pass through by Numerical value adds 1 to replace first character section, and amended content is sent to next 3rd second receiver 130a3.

In T3, the 3rd second receiver is connected to second second receiver 130a2 and checks the 3rd K27.7_SCT First character segment value；First character segment value is 2, and second field value is also 2；Due to first character segment value and second word Segment value matches, the data that the 3rd second receiver 130a3 reception includes after the 3rd K27.7_SCT, by by numerical value Add 1 to replace first character section, and amended content is sent to next second receiver 130a4.In T4（It is not shown）, 4th second receiver 130a4 is connected to first of the 4th K27.7_SCT of the 3rd second receiver 130a3 and inspection Field value；First character segment value is 3, and second field value is also 3；Therefore, first character segment value and second field value Matching；Then, the data that the reception of the 4th second receiver includes after the 4th K27.7_SCT, by by numerical value add 1 come First character section is replaced, and amended content is sent to next second receiver i.e. the 5th second receiver.

In T5（It is not shown）, the 5th second receiver be connected to the 4th second receiver and check the 5th K27.7_ The first character segment value of SCT；First character segment value is 4, and second field value is also 4；Due to first character segment value and second A field value matching, the data that the 5th second receiver reception includes after the 5th K27.7_SCT, by the way that numerical value is added 1 to replace first character section, and amended content is sent to next second receiver i.e. the 6th second receiver. T6, the 6th second receiver 130a6 are connected to the 5th second receiver 130a5 and check the of the 6th K27.7_SCT One field value；First character segment value is 5, and second field value is also 5；Due to first character segment value and second field value Matching, the 6th second receiver 130a6 receive data.Each second receiver 130a compares by first receiver 120a The first character segment value and second field value of the data packet (214) of transmission；Each second receiver 130a can be configured to as Fruit first character segment value matches then received data packet with second field value, does not otherwise receive data.Each second receiver The allocated data and control command of right side second receiver 130a are distributed in 130a receptions.This agreement can be covered and is one another in series Up to the 256 of connection（2⁸）A second receiver 130a.

Another embodiment according to the present utility model, as shown in Figure 13 B, the quantity of the first field information 214b can be Subtract 1 from the sum of second receiver 130a.It can be represented with Y-1, wherein Y refers to the sum of second receiver 130.Second Field information 214c can be set to point out the address for the target second receiver that configuration data bag 210 specifies transmission.If for example, Configuration data bag 210 is assigned to X second unit receiver, then the value of the second field information 214c may be configured as Y-X.

Particularly, for example, the first field information 214b can be arranged to numerical value 5 by one of them first receiver 120a, i.e., The sum 6 of second receiver 130a subtracts 1.On the second field information, the second unit receiver in the first module 130a The sum of 130a1,130a2,130a3,130a4,130a5 and 130a6 are 6, thus Y is 6.If configuration data bag 210 is specified To the 6th second unit receiver in the first module 130a6, then the second field information 214c may be configured as 0, Y (6)-X (6).In another example, if configuration data bag 210 is assigned to second second receiver in the second module 130b 130b2, then the second field information 214c may be configured as 4, Y (6)-X (2).In other examples, if configuration data bag 210 refers to It is fixed to the 5th second unit receiver 130c5 in the 3rd module 130c, then the second field information 214c may be configured as 1, Y (6)-X(5)。

Field information the collection 214b and 214c of configuration data bag are configured to when passing in and out at least one second receiver 130a1 Changed by therefrom increasing or subtracting a predetermined value in order.It is described with reference to Fig. 4, Figure 13 A and Figure 13 B, the utility model The 6th second receiver 130a6 data being transferred to from the first receiver 120a in the first module 130a；It is received from first Device 120a is transferred to second second receiver 130b2 in the second module 130b；And/or it is transferred to from the first receiver 120a The 5th second receiver 130c5 in 3rd module 130c.

First second receiver 130a1 for being coupled to the first receiver 120a receives configuration data bag 210.Configuration data Bag 210 is assigned to the 6th second receiver 130a6 in the first module 130a；；As described above, the of second receiver 130a One field information is 5, and the ordered pair of the first field information and the second field information is（5,0）, as shown in Figure 13 B.First Two receiver 130a1 compare the first field information 214b (5) and the second field information 214c (0);If the first field information 214b and the second field information 214c has identical numerical value, then first second receiver 130a1 receives and processes configuration data Bag 210;Due to the first field information 214b（5）With the second field information 214c（0）It is unmatched each other, first;A second receives Device 130a1 is determined not to its specified configuration data packet 210;Therefore, first second receiver 130a1 is not handled or performed Configuration data bag 210 simultaneously passes it to next receiver, i.e. second second receiver 130a2.In configuration data bag 210 During disengaging, first second receiver 130a1 subtracts a predetermined value from the first field information 214b.For example, if this is predetermined Value is 1, then the first field information 210 from 5 becomes 4;Therefore, the ordered pair of the first and second field information 214b and 214c is present Become（4,0）;After having subtracted, configuration data bag 210 is transferred to next second second by first second receiver 130a1 Receiver 130a2;Second second receiver 130a2 compares the first field information 214b (4) and the second field information 214c (0);Therefore, the first field information is 4 now, and the second field information is 00, they are unmatched each other;Therefore, second second Receiver 130a2 make the ordered pairs of the first and second field informations from（4,0）Become（3,0）, and configuration data bag 210 is transferred To next receiver.

As shown in Figure 13 B, when configuration data bag 210 reaches the 6th second receiver 130a6, the first field information The ordered pair of 214b and the second field information 214c become（0,0）;6th second receiver 130a1 compares the first field information 214b (0) and the second field information 214c (0), the two is with identical zero now;Therefore, the 6th second receiver 130a6 determines configuration data bag 210 being assigned to the 6th second receiver 130a6, and handles or perform any scheduled event. This processing or execution may include from or to memory in the 6th second receiver 130a6（It is not shown）Middle read-write is matched somebody with somebody Put data packet 210.In this way, the first receiver 120a can be to the 6th specified second receiver 130a6 transmission configuration data packet 210 and image data bag 220.The agreement can be used for be serially connected up to 256（2⁸）A second receiver;It however, should It is not limited to the above example for quantity.For example, if selection represents field information with 12, which can be used for the company of being one another in series Up to 4096 connect（2¹²）A second receiver.The address of each second receiver and the initial automated programming of data are to be connect with first Receive device matching.

Configuration data bag 210 and/or image data bag 220 are included for LED driver 140 and flash controller Multiple orders of definition.Order can be defined by host personal computer or transmission box；Order can be broadcasted to the first receiver 120 and it is transmitted to second receiver 130；Second receiver 130 can be generated based on the reference clock from the first receiver 120 The modular system clock of LED driver 140 and data receiver control signal；The modular system clock and data of LED driver 140 It is the clock and data recovery by each second receiver 130 to receive control signal（CDR）What module generated；Each second receives Device 130 is required for the reference clock from the first receiver 120, with the accuracy of keep frequency.

Figure 13 B are also shown on how configuration data bag 210 from the first receiver 120a is transferred to the second module 130b In second second receiver 130b2 another example.In Figure 13 B, the first field information and the second field information it is orderly To being（5,4）；According to the above-mentioned description process as described in the 6th second receiver 130a6, second in the second module 130b Two receiver 130b2 compare the first field information 214b (4) and the second field information 214c (4)；Due to the first field information 214b (4) and the second field information 214c (4) has identical numerical value, and second second receiver 130b2, which determines to specify to it, to be matched somebody with somebody Data packet 210 is put, and necessary processing is performed to configuration data bag 210.Then, second second receiver 130b2 is by first Field information subtracts one, and configuration data bag is transferred to next 3rd second receiver 130b3.On the second module 130b In other second receivers 130b1,130b3,130b4,130b5 and 130b6, each of which determines the first word Segment information 214b and the second field information 214c is mismatched；Therefore, other each second receivers in the second module 130b Configuration data bag 214b is transferred to next second receiver by 130b1,130b3,130b4,130b5 and 130b6.

Figure 13 B show how configuration data bag 210 from the first receiver 120a is transferred to the 3rd second receiver again Another example of the 5th second receiver 130c5 in module 130c.The ordered pair of first and second field informations be (5, 1)；All second receiver 130c1,130c2,130c3,130c4,130c5 in 3rd second receiver module 130c and 130c6 subtracts the first field information is transferred to next second receiver by configuration data bag 210 together；Only the 5th second Receiver 130c5 is handled and is performed configuration data bag 210.

Figure 14 is the principle block diagram for showing vertical synchronizing signal delay value calculating method.It is important that with synchronization Mode distributes data and signal across multiple LED drivers.Vertical synchronizing signal can be used as the alignment mark between LED driver Will.Stand-by period between LED driver may cause command synchronization problem；In this regard, " Vsync_delay " matches somebody with somebody Sync numbers can be defined as by putting register, and can overcome stationary problem by adjusting the value of sync numbers.

First second receiver module 130a may include six second receiver 130a1,130a2 being arranged in series, 130a3,130a4,130a5 and 130a6.From each second receiver 130a1,130a2,130a3,130a4,130a5 and 130a6 Stand-by period to LED driver can generate stationary problem.To reduce this stand-by period problem, field information collection can be used 214b and 214c；Configuration data bag 210 may include length of delay, reflect the change of the first field information 214b；Therefore, Mei Ge Two receiver 130a1,130a2,130a3,130a4,130a5 and 130a6 can determine to pass to LED driver 140 according to length of delay Transmission ＆ distribution put the delay period of at least one of data packet 210 and/or image data bag 220.

Particularly, configuration number is received with reference to Figure 14, first second receiver 130a1 for being coupled to the first receiver 120a According to bag 210.As described above, the first field information 214b of configuration data bag 210 is 5, the second field information has sync numbers；Together Step number can be pre-defined any number, and be different from general second field number 214c；For example, sync numbers can be 255；Therefore, when arbitrary second receiver 130a1,130a2,130a3,130a4,130a5 and 130a6 are received with sync numbers During field information collection, the first field information 214b is identified as length of delay by them.

With reference to Figure 14, first second receiver 130a1 receives sync numbers（255）；First second receiver 130a1 is read The value of the first field information 214b is taken as length of delay；When configuration data bag 210 is transferred to next second receiver, first A second receiver 130a1 subtracts a predetermined value from the first field information 214b；If predetermined value is 1, the first field information The value of 214b becomes 4 from 5.

Second second receiver 130a2 reception has become 4 the first field information 214b, and is identified as postponing Value.Similarly, the length of delay of next second receiver 130a3,130a4,130a5,130a6 are 3,2,1 and 0 respectively.

Since the 6th second receiver 130a6 has 0 length of delay, when the 6th second receiver 130a6 drives to LED Device 140 transmits data and during signal, transmission time become other second receiver 130a1,130a2,130a3,130a4 and The synchronization time of 130a5.Correspondingly, when first second receiver 130a1 transmits data or signal to LED driver 140, It uses length of delay（5）The computing relay period so that data transmission period since first second receiver can be by It is synchronous with synchronization time according to time delay；In a similar way, from each second receiver 130a1,130a2,130a3,130a4 It can be synchronous with the synchronization time of the 6th receiver 130a6 with the transmission time that 130a5 starts.

Figure 15 is the schematic diagram of the configuration data modulation and its synchronization that show the utility model.With reference to Figure 15, describe Six unlike signals when the time is in the A periods；Each signal carries a length of delay respectively, is with the described sides of Figure 14 What formula calculated.Based on relative retardation, make each one section of time delay of signal delay.The B periods in Figure 15 describe delay Six signals synchronous on synchronization time after period.

Figure 16 is principle process schematic diagram of the utility model using the method for LED display transmission packet, wherein The LED display includes transmitter 110, at least one first receiver 120 and multiple second receiver modules.

The utility model also provides a kind of method using LED display transmission packet, comprises the following steps：Step 310 be to be sent from transmitter 110 at least one first receiver 120 in configuration data bag and image data bag at least Each in one kind, wherein configuration data bag and image data bag includes field information collection；Step 320 is at least one institute State at least one in the first receiver reception configuration data bag and image data bag；Step 330 is at least one described First receiver is into the multiple second receiver mould at least one transmission configuration data bag in the block and image data bag It is at least one；Whether step 340, which is to determine out to specify to a multiple second receiver mould second receiver in the block, matches somebody with somebody Put at least one in data packet and image data bag；Step 350 be second receiver processing configuration data bag and One kind in image data bag；Step 360 is that the field information collection passes through when passing in and out at least one second receiver Therefrom increase in order or subtract a predetermined value to change field information collection.Configuration data bag includes configuration data, and picture number According to including image data.

It is to be understood that the exemplary embodiment of the utility model description is presently preferred embodiment, thus should only retouch It states in meaning to consider, rather than the purpose for limitation.The description of features or aspect in each embodiment should usual quilt Think the other similar characteristics or aspect that can be used in other embodiments.

Embodiment described above only expresses the preferred embodiment of the utility model, and description is more specific and detailed, But it should not be interpreted as limiting the scope of the present invention；It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the scope of protection of the utility model；Therefore, all equivalents done with the utility model claims scope and modification, The covering scope of the utility model claims should be belonged to.

Claims

1. a kind of LED display, it is characterised in that：

Including transmitter；

It is coupled to multiple first receivers of the transmitter；

Multiple second receiver modules, wherein each second receiver module couples are received at least one described first Device, each second receiver module include multiple second receivers；

Multiple LED driver groups, each LED driver group are coupled at least one second receiver, Mei Gesuo Stating LED driver group includes multiple LED drivers；And

At least one in multiple first receivers is connected in multiple second receiver modules by transformerless electric wire link At least one second receiver on to transmit data therebetween.

2. LED display according to claim 1, it is characterised in that：

3. LED display according to claim 1, it is characterised in that：

Via transformerless electric wire link connection between one or more second receiver mould adjacent second receivers in the block.

4. according to any one of them LED display of claims 1 to 3, it is characterised in that：

5. according to any one of them LED display of claims 1 to 3, it is characterised in that：

The transformerless electric wire link does not include transformer.

6. LED display according to claim 1, it is characterised in that：

Each the multiple second receiver includes phaselocked loop（PLL）.

7. LED display according to claim 1, it is characterised in that：

Each the multiple second receiver does not include transformer.

8. LED display according to claim 1, it is characterised in that：

9. LED display according to claim 1, it is characterised in that：

10. LED display according to claim 1, it is characterised in that：