CN103402069B - Electronic equipment and display unit thereof and signal processing apparatus - Google Patents
Electronic equipment and display unit thereof and signal processing apparatus Download PDFInfo
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Abstract
The invention provides a kind of electronic equipment and display unit thereof and signal processing apparatus. This display unit is connected by a coffret with signal processing apparatus. This coffret comprises a multi-media signal coffret. This multi-media signal coffret comprises multiple differential signal transmission passages. The differential signal of the plurality of differential signal transmission channel transfer uses one or more rendezvous protocols between this display unit and this signal processing apparatus to encode. The plurality of differential signal transmission passage is divided into multiple transmission channel groups, and these transmission channel groups are for transmitting the differential signal of different rendezvous protocol codings. And logical at least one the differential signal transmission passage of at least one differential signal transmission in the plurality of differential signal transmission passage is the common-use tunnel of different transmission channel groups. The present invention can utilize less transmission channel to realize the transmission of various protocols by sharing of differential signal transmission passage, has solved the contradiction between interface compatibility and interface scale.
Description
Technical field
The present invention relates to a kind of electronic equipment and display unit thereof and signal processing apparatus, relate in particular toThe electronic equipment that a kind of display unit and signal processing apparatus are separate.
Background technology
At present, the signal processing apparatus of consumer electronics product and display unit tighter integration are oneRise, taking LCD TV as example, its signal processing apparatus (being often referred to TV SKD) and demonstration dressPut (being often referred to LCDs) tighter integration and form a complete television set together, andCannot realize independent renewal or the upgrading of signal processing apparatus or display unit.
But for LCD TV, the technical development speed of display unit lags behind letter conventionallyNumber treating apparatus. The signal processing apparatus of a LCD TV will fall conventionally after 1～2 year comprehensivelyAfter,, processing speed higher by performance faster hardware plan replaces, and the technology of LCDsSpecification can not fall behind in a long time. Therefore, the update of television set normally becauseDue to the performance of signal processing apparatus cannot be met consumers' demand.
From cost aspect, LCDs accounts for 60%～70% of whole set of television cost, consumerBecause signal processing apparatus performance falls behind, complete machine is eliminated, can directly be caused 60%～70% value waveTake, this being wasted in when causing economic loss, also can bring electron wastes processing, ecologyThe pressure of the aspects such as environmental protection.
Be directed to this, have dealer to propose that a kind of display unit and signal processing apparatus separately manufactureLCD TV. In this LCD TV, display unit comprises LCDs, signal processing devicePut and comprise external input signal processing module and multimedia signal dispose module. External input signal placeReason module is used for receiving the input signal of external equipment (as Set Top Box, DVD etc.), to what receiveSignal is passed to multimedia signal dispose module, multimedia signal dispose module after processingFor the signal receiving is carried out to image quality and tonequality processing, then by display unit and signal processingCoffret between device is passed to display unit.
This LCD TV, by display unit and signal processing apparatus are separately manufactured, makes signal placeIndependent renewal or the upgrading of reason device become possibility. But, in the signal processing of this LCD TVIn device, there is the technical development comparison of some parts (for example acoustic processing, image processing section)Slowly, and do not need upgrade frequently or change. But because these are partly integrated in signal processing devicePut and need to be with the replacing of signal processing apparatus, and cause certain cost waste; In addition,Because module integrated in signal processing apparatus is more, and make display unit and signal processing deviceCoffret between putting needs content to be processed to increase and has increased the scale of interface; And, byBe integrated in signal processing apparatus in acoustic processing, image processing section, and after making each replacingAll need sound quality and picture quality to LCD TV again to debug, and increased this kindThe use complexity of LCD TV. Therefore, be necessary above-mentioned LCD TV to improve.
Summary of the invention
In view of this, the invention provides between a kind of its display unit and signal processing apparatus and transmit and connectLess electronic equipment and display unit and the signal processing apparatus of mouth scale.
Electronic equipment provided by the invention comprises display unit and signal processing apparatus. Described demonstration dressPut with signal processing apparatus and be connected by a coffret. Described coffret comprises a multimedia letterNumber coffret. Described multi-media signal coffret comprises multiple differential signal transmission passages. InstituteThe differential signal of stating multiple differential signal transmission channel transfer uses described display unit and described letterOne or more rendezvous protocols between number treating apparatus are encoded. Described multiple differential signal passesDefeated passage is divided into multiple transmission channel groups, and these transmission channel groups are used for transmitting different rendezvous protocolsThe differential signal of coding. And, at least one difference in described multiple differential signal transmission passagesSignal transmission passage is the common-use tunnel of different transmission channel groups. Described display unit also comprises safetyCertification and control module, described signal processing apparatus also comprises security authentication module, described transmission connectsMouth also comprises the peace for connecting described safety certification and control module and described security authentication moduleFull control interface, all presets safety in described safety certification and control module and security authentication moduleAuthentication information tables of data, described secure authenticated information tables of data is used for realizing display unit and signal processing devicePut the certification of production firm, and/or can send or receive between display unit and signal processing apparatusThe confirmation of signal.
Display unit provided by the invention comprises a coffret, and described coffret comprises matchmaker more thanBody signal transmission interface, described multi-media signal coffret comprises that multiple differential signal transmission are logicalRoad, described multiple differential signal transmission passages are divided into multiple transmission channel groups, these transmission channelsGroup is for transmitting the differential signal of different rendezvous protocol codings, and described multiple differential signal transmissionAt least one differential signal transmission passage in passage is the common-use tunnel of different transmission channel groups. InstituteState coffret and also comprise a security control interface, described display unit also comprises and described safety controlThe safety certification that interface processed is connected and control module, store in described safety certification and control moduleSecure authenticated information tables of data, described secure authenticated information tables of data be used for judging described display unit and withWhether the signal processing apparatus that described display unit is connected matches.
Signal processing apparatus provided by the invention comprises a coffret, and described coffret comprises oneMulti-media signal coffret, described multi-media signal coffret comprises multiple differential signal transmissionPassage, described multiple differential signal transmission passages are divided into multiple transmission channel groups, these transmissionPassage group is for transmitting the differential signal of different rendezvous protocol codings, and described multiple differential signalAt least one differential signal transmission passage in transmission channel is that sharing of different transmission channel groups is logicalRoad. Described coffret also comprises a security control interface, described signal processing apparatus also comprise withThe connected security authentication module of described security control interface, presets peace in described security authentication moduleFull authentication information tables of data, described secure authenticated information tables of data be used for judging described signal processing apparatus andThe whether pairing of the display unit being connected with described signal processing apparatus.
In the present invention, differential signal transmission passage is divided into for transmitting different rendezvous protocol codingsMultiple transmission channel groups of differential signal, and at least one difference in differential signal transmission passageSignal transmission passage is the common-use tunnel of different transmission channel groups, the present invention is transmitted logical by differenceThe shared quantity that can effectively reduce transmission channel of the transmission channel of road group, utilizes the present inventionFew transmission channel can realize the transmission of various protocols, has solved interface compatibility and interface scaleBetween contradiction, make electronic equipment of the present invention utilize the coffret of small-scale can realize manyPlant the transmission of the differential signal of rendezvous protocol coding.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand the present inventionTechnological means, and can be implemented according to the content of description, and for allow of the present invention onState with other objects, feature and advantage and can become apparent, below especially exemplified by preferred embodiment, andCoordinate accompanying drawing, be described in detail as follows.
Brief description of the drawings
Figure 1 shows that the system architecture schematic diagram of electronic equipment of the present invention.
Figure 2 shows that the schematic diagram of the multi-media signal coffret of one embodiment of the invention.
Figure 3 shows that the wherein one of the electronic equipment of the multi-media signal coffret that utilizes Fig. 2The schematic diagram of signal switching mode.
Figure 4 shows that the another kind letter of the electronic equipment of the multi-media signal coffret that utilizes Fig. 2The schematic diagram of number switching mode.
Figure 5 shows that multiple display unit and multiple signal processing apparatus in one embodiment of the inventionCollocation be related to schematic diagram.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take andEffect, below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment of the present invention, structure,Feature and effect thereof, be described in detail as follows.
Figure 1 shows that the system architecture schematic diagram of electronic equipment of the present invention. As shown in Figure 1, originallyThe electronic equipment of invention comprises separate display unit 10 and signal processing apparatus 20 and connectsConnect the coffret 30 of display unit 10 and signal processing apparatus 20.
Display unit 10 comprises power management module 11, safety certification and control module 13, many matchmakersBody signal processing module 15, display device 17 and loudspeaker 18.
Signal processing apparatus 20 comprises security authentication module 23 and input signal processing module 25.
Coffret 30 comprises power supply interface, security control interface and multi-media signal coffret.Power supply interface comprises to be located at the first power supply interface 12 of display unit 10 and to be located at signal processing apparatusThe second power supply interface 22 of 20. Security control interface comprises the first safety of being located at display unit 10Control interface 14 and the second security control interface 24 of being located at signal processing apparatus 20. Multimedia letterNumber coffret comprises to be located at the first multi-media signal coffret 16 of display unit 10 and to be located atThe second multi-media signal coffret 26 of signal processing apparatus 20.
In each part of electronic equipment, power management module 11 use of display unit 10In converting civil power (220V, 50Hz or 110V, 50Hz) to corresponding AC DC electric, forModules in modules and the signal processing apparatus 20 of display unit 10 self provides stableWorking power.
Power supply interface comprises supply lines (PowerSupplyLine) and system ground wire (GroundLine). The supply lines of the first power supply interface 12 is connected by direct docking or cable with system ground wireBe connected with supply lines and the system ground wire of the second power supply interface 22 etc. physical connection mode, to be communicated withIn the power management module 11 of display unit 10 and signal processing apparatus 20, need the safety of power supply to recognizeCard module 23 and input signal processing module 25.
The safety of the safety certification of display unit 10 and control module 13 and signal processing apparatus 20Authentication module 23 for by security control interactive interfacing secure authenticated information, (hand shakes handsShake) information and control information (as remote controller control signal) etc.
Security control interface is for realizing recognizing between display unit 10 and signal processing apparatus 20Demonstrate,prove, shake hands, the transmission of the information such as control. In the present embodiment, the first security control interface 14Comprise control bus interface with the second security control interface 24, its corresponding control bus is by twoThe plain conductor composition being parallel to each other. Described control bus can adopt ripe STD bus associationView, as I2C (Inter-IntegratedCircuit) bus protocol, SPI (SerialPeripheralInterface, Serial Peripheral Interface (SPI)) bus protocol etc., also can adopt production firm's self-definingPrivately owned bus protocol. In different embodiments of the invention, according to different bus protocols, peaceThe control bus of full control interface can be made up of 1～n (n≤6) bar wire.
The input signal processing module 25 of signal processing apparatus 20 is for receiving many matchmakers of outside inputBody audio-video signal, and carry out according to the interface protocol of signal processing apparatus 20 and display unit 10Process and recompile, and the multimedia audio-video signal after processing and coding is sent to and shows dressPut 10 multimedia signal dispose module 15. External input signal comprises Set Top Box, DVD, USBThe external equipment outputs such as (UniversalSerialBUS, USB) memory device, computerAV (Audio&Video, Voice & Video), YPbPr (color difference components interface), HDMI(HighDefinitionMultimediaInterface, HDMI), VGAThe multi-media signals such as (VideoGraphicsArray, Video Graphics Array) signal.
The multimedia signal dispose module 15 of display unit 10 by multi-media signal coffret withThe input signal processing module of signal processing apparatus 20 is connected, for receiving signal processing apparatus 20Send multi-media signal, and to its process (be mainly to carry out image quality and tonequality processing, withAnd be converted into the displayable signal format of display device 17), then driving display part 17(for example LCDs) display frame, and drive loudspeaker 18 to sound. For the ease of aobviousThe independent of showing device 10 produced and inspection, and display unit 10 is also additionally provided with a general standardSignaling interface, this interface can be the standard multimedia signaling interfaces such as AV, YPbPr or HDMIIn one, for produce in display unit 10 good after, also do not connect with signal processing apparatus 20Before connecing, input test signal detects display unit 10, to determine display unit 10 whetherQualified. In the present invention, by the multimedia signal dispose module for carrying out image quality and tonequality processingBe integrated in display unit, make electronic equipment of the present invention (LCD TV) in prior artMultimedia signal dispose module integration is in the LCD TV of signal processing apparatus, owing to upgradingWhen signal processing apparatus, without upgrade multimedia signal dispose module simultaneously, and reduce signal processingThe renewal cost of device, and because multimedia signal dispose module integration is in display unit, andUpgrade image quality and the tonequality of signal processing device postpone without debugging LCD TV, and reduced the present inventionThe use complexity of LCD TV.
Multi-media signal coffret (the first multi-media signal coffret 16 and the second multimediaSignal transmission interface 26) comprise a Digital Audio Transmission passage, two analogue audio frequency transmission channels,Three Analogvideotransmission passages and multiple differential signal transmission passage.
Wherein, Digital Audio Transmission passage is that (SONY, PHILIPS DAB connect SPDIFThe abbreviation of mouth) Digital Audio Transmission passage, for transmitting coaxial SPDIF digital audio and video signals. TwoIndividual analogue audio frequency transmission channel is respectively left channel signals passage and right-channel signals passage. SimulationIn transmission of video passage, the matched impedance of each passage is 75 ohm, can access standard AV,The analog video signal such as YPbPr, VGA.
Differential signal transmission passage is for transmission of digital audio frequency and video differential signal, and these differential signals passDefeated passage is multiple differential pairs, and the quantity of described differential pair is that 2～n (n≤64) is individual, each differenceRight characteristic impedance is 100 ± 10 ohm, and transmission bandwidth is less than 200MHz, and these differential pairs canWith the different rendezvous protocol codings that transmit as required. Particularly, these differential signal transmission are logicalRoad is divided into multiple transmission channel groups, and these transmission channel groups are used for transmitting different rendezvous protocol codingsDifferential signal, one of them in these differential signal transmission passages is different transmission channelsThe common-use tunnel of group. The present invention shares by transmission channel, makes these differential signal transmission logicalRoad utilizes less passage can realize HDMI signal, usb signal, LVDS (LowVoltageDifferentialSignaling, technology of Low Voltage Differential Signaling interface) signal, V-By-1 signal etc. be manyPlant the transmission of signal.
In embodiment as shown in Figure 2, multi-media signal coffret comprises 8 digital audio/videosSignal transmission passage (Channel0～Channel7), wherein, Channel0 is for USB2.0 letterNumber transmission, Channel1～Channel3 is for the transmission of USB3.0 signal, Channel4～Channel7 is for the transmission of HDMI1.4 signal, and Channel0～Channel7 is used forThe transmission of V-By-1 signal. As can be seen from the above-described embodiment, V-By-1 signal respectively with USB2.0,USB3.0 and HDMI1.4 signal have shared transmission channel Channel0, Channel1～Channel3 and Channel4～Channel7. By sharing of transmission channel, the present embodiment is only adopted8 number word tone video signal transmission passages can be supported USB2.0, USB3.0, HDMI1.4 simultaneouslyAnd the transmission of V-By-1 signal, that is to say, the present embodiment only adopts 8 digital audio/video lettersIt is logical that number transmission channel can realize original needs 16 (1+3+4+8) number word tone video signal transmissionThe biography of USB2.0, USB3.0, HDMI1.4 and tetra-kinds of signals of V-By-1 that road just can be realizedDefeated, thus the contradiction between interface compatibility and interface scale solved.
It should be noted that, in Fig. 2, only show one of them concrete reality that transmission channel sharesExisting mode, in actual applications, can allocate as required flexibly, is not limited only to shown in Fig. 2Configuration mode, for example, in other embodiments of the invention, can take 4 digital audio/videosSignal transmission passage is realized the transmission of USB2.0, USB3.0 and tri-kinds of signals of HDMI1.4,In this embodiment, Channel0 is for the transmission of USB2.0 signal, Channel1～Channel3For the transmission of USB3.0 signal, Channel0～Channel3 is for the biography of HDMI1.4 signalDefeated, HDMI1.4 signal has shared transmission channel with USB2.0 and USB3.0 signal respectivelyChannel0 and Channel1～Channel3. In an embodiment of the present invention, shared transmissionThe quantity of passage is not limit, for example, and the quantity of shared in the embodiment shown in Figure 2 transmission channelBe 8, in the embodiment described in this section, the quantity of shared transmission channel is 4, at thisIn other embodiment of invention, the quantity of shared transmission channel can also be 1,2,9Individual etc., the quantity of common transmitted passage depends on the kind of signal of needs transmission and required biography thereofThe factors such as the quantity of defeated passage.
Realize multiple because the present invention adopts the mode of common transmitted passage with less transmission channelThe transmission of the differential signal of protocol code, that is to say, in shared transmission channel, sameTransmission channel need to be transmitted the digital audio/video differential signal of different rendezvous protocol codings, therefore, needsTo between display unit and signal processing apparatus, carry out agreement agreement, logical with the transmission that determines to shareRoad carries out the transmission of the first signal in which kind of situation, carries out the second, in which kind of situationThree kinds ... or the transmission of n kind signal, that is to say, need to be at display unit and signal processing deviceBetween putting, carry out agreement agreement, to realize the switching of digital audio-video signal of different agreement coding.
Fig. 3 and Figure 4 shows that display unit and signal processing apparatus between wherein two kinds of agreements approximatelyDetermine method, Figure 3 shows that the difference of utilizing general codec to realize different rendezvous protocol codingsThe embodiment that signal switches, Figure 4 shows that and utilize change-over switch to realize different rendezvous protocol codingsDifferential signal switch embodiment.
As shown in Figure 3, for the specific embodiment shown in Fig. 2, the coding of signal processing apparatus endDevice is universaling coder, its can according to multiple standards agreement (as USB2.0/3.0, HDMI,LVDS, V-By-1) or proprietary protocol initial audio/video flow is encoded; Display apparatus sideDecoder is universal decoder, its can according to multiple standards agreement (as USB2.0/3.0, HDMI,LVDS, V-By-1) or the audio-video code stream of proprietary protocol coding decode. That is to say, logicalCan support multiple standards agreement and proprietary protocol with encoder and universal decoder. When signal processingWhen device is used in conjunction with display unit, both sides are by the corresponding letter of controlling of security control interface exchangeBreath, determines the protocol type that both sides can carry out. The agreement that can support as both sides only existsA time, directly carry out this kind of agreement; The agreement that can support as both sides be two kinds or two kinds withWhen upper, need to determine the final protocol type of carrying out according to predetermined optimum principle.
For example, universaling coder is supported standard agreement A, standard agreement B, standard agreement C, privateProtocols having A, proprietary protocol B; Universal decoder is supported standard agreement B, standard agreement D, privateProtocols having A, proprietary protocol C. In the time that signal processing apparatus and display unit are used in conjunction with, both sidesBy exchange of control information, determine that the protocol type that both sides can support is standard agreement B and privately ownedAgreement A; Next, need to determine final consensus standard according to predetermined optimum principle, for example,Proprietary protocol A has higher compression ratio than standard agreement B, that is to say proprietary protocol AThere is higher priority compared with standard agreement B, therefore, signal processing apparatus and display unitShould preferentially select the highest consensus standard of execution priority, i.e. proprietary protocol A.
As shown in Figure 4, for the specific embodiment shown in Fig. 2, signal processing apparatus end comprisesUSB2.0 encoder special, USB3.0 encoder special, HDMI encoder special and V-By-1Encoder special, and for explaining conveniently, the USB3.0 encoder special in Fig. 4 has been divided into 3Individual part (Part1～Part3), HDMI encoder special has been divided into 4 parts (Part1～Part4),V-By-1 encoder special has been divided into 8 parts (Part1～Part8), and each encoder is directly defeatedGo out to corresponding change-over switch, switched according to corresponding switch controlling signal by change-over switch,To determine the coding of the digital audio-video signal that carries out which kind of agreement, thereby realize answering of transmission channelWith; Same, display apparatus side comprise USB2.0 dedicated decoders, USB3.0 dedicated decoders,HDMI dedicated decoders, V-By-1 dedicated decoders, for explaining conveniently, the USB3.0 in Fig. 4Dedicated decoders has been divided into 3 parts (Part1～Part3), and HDMI dedicated decoders has been divided into 4Individual part (Part1～Part4), V-By-1 dedicated decoders has been divided into 8 parts (Part1～Part8),The input of each decoder receiving and displaying device end change-over switch, is opened accordingly by change-over switch basisClose control signal and switch, to determine the decoding of the digital audio-video signal that carries out which kind of agreement,Thereby realize the multiplexing of transmission channel.
Finally it should be noted that, the present invention is provided with safety certification and control module in display unit,In signal processing apparatus, be provided with security authentication module, object is to realize two display unit and signal placeManage the mutual safety certification between device, both ensured the clarity of display device display frame, make it notCan cause data communication problem between the two because display unit has accessed inappropriate signal processing apparatusCaused picture is unintelligible, also protects the rights and interests of production firm simultaneously, prevents that other people from copying regular productionThe product of manufacturer.
Safety certification and control module and the signal processing apparatus of display unit are described with specific embodiment belowSecurity authentication module between safety certification principle.
Suppose that certain production firm has produced display unit A and display unit B, has produced signal processing simultaneouslyDevice A, signal processing apparatus B, signal processing apparatus C. Above-mentioned 5 kinds of devices can form as Fig. 5Shown collocation relation. Wherein, display unit A can receive by differential signal transmission channel transferDifferential digital signal; Display unit B can receive by the differential digital of differential signal transmission channel transferSignal, can also receive the analog audio-video signal transmitting by analog audio-video transmission channel, in order to reachTo optimal display result, preferential selective reception is by the differential digital signal of differential signal transmission channel transfer;Signal processing apparatus A can convert external input signal to digital audio/video differential signal and pass through differenceSignal transmission passage transmits; Signal processing apparatus B can convert external input signal to digital soundVideo differential signal also transmits by differential signal transmission passage, external input signal can also be turnedChange analog audio-video signal into, and transmit by analog audio-video transmission channel; Signal processing apparatusC can convert external input signal to analog audio-video signal, and by analog audio-video transmission channelTransmit.
In order to protect the rights and interests of production firm, can be at the safety certification of display unit and control module and letterPreset as the secure authenticated information tables of data of table 1～table 5 in the security authentication module of number treating apparatus. This realityExecuting tables of data preset in example is the array of 8 bytes (Byte), wherein the 1st byte (Byte0)Storage manufacturer ID (in the present embodiment, manufacturer ID is: 0xA3), all of this manufacturers produce showShowing device and signal processing apparatus have identical manufacturer ID; At the beginning of the 2nd bytes store dynamic passwordInitial value, each display unit all a random preset initial value (in the present embodiment, display unit A is presetDynamic password initial value is 0x1D, and the preset dynamic password initial value of display unit B is 0x03), eachThe dynamic password initial value of signal processing apparatus is 0x00; The 3rd byte (Byte2) is this deviceThe signal type (as data signal or analog signal) that can receive or send, in the present embodiment, it is low4 (Bit3～Bit0), if be set to " 1111 ", represents to receive or to send analog audio-video signal,Other states of non-" 1111 ", represent to receive or to send analog audio-video signal; It is high 4(Bit7～Bit4), if be set to " 1111 ", represents to receive or to send digital audio/video differential signal,Other states of non-" 1111 ", represent to receive or to send digital audio/video differential signal. ShowAfter device is connected with signal processing apparatus, display unit is the manufacturer ID of read signal treating apparatus first,And compare with self preset manufacturer ID, if the manufacturer ID of the two is identical, by showingShowing device sends dynamic password (Byte1) to signal processing apparatus; The safety certification mould of signal processing apparatusPiece receives after dynamic password, according to predetermined algorithm, dynamic password is added to the safety that deposits self after 1 in and recognizesDemonstrate,prove the Byte1 of information table, and returned to safety certification and the control module of display unit; Show dressThe safety certification of putting and control module receive after the dynamic password of passback, with the dynamic password of original transmissionCompare, whether the dynamic password that judgement receives is according to predetermined on the basis of former dynamic passwordAlgorithm calculates and obtains, and if so, represents that the dynamic password receiving is correct dynamic password, furtherChecking display unit and signal processing apparatus are to be produced by same production firm; When safety certification and control mouldPiece sends to signal by the Byte2 of self after judging that the dynamic password receiving is as correct dynamic passwordTreating apparatus, signal processing apparatus is according to the content of Byte2 and the signal handling capacity of self, preferablyGood signal format also sends to display unit.
Can be learnt by table 1 and table 3-table 5, display unit A and signal processing apparatus A, B, C are equalProduced by same production firm. In the present embodiment, low 4 of the Byte2 of display unit A is " 0000 ",High 4 is " 1111 ", represents that display unit A only can send or receive differential digital signal; Signal placeLow 4 of the Byte2 of reason device A is " 0000 ", and high 4 is " 1111 ", represents signal processing apparatusA only can send or receive differential digital signal, therefore, display unit A and signal processing apparatus A itBetween only can transmit differential digital signal; Low 4 of the Byte2 of signal processing apparatus B is " 1111 ", height4 is " 1111 ", represents that signal processing apparatus B not only can send or receive differential digital signal, also canTo send or to receive analog audio-video signal, but because display unit A only can send or receive differenceData signal, therefore, only can transmit differential digital signal between display unit A and signal processing apparatus B;Low 4 of the Byte2 of signal processing apparatus C is " 1111 ", and high 4 is " 0000 ", represents signal placeReason device C only can send or receive analog audio-video signal, and because display unit A only can sendOr reception differential digital signal, therefore, between display unit A and signal processing apparatus C, cannot carry out letterNumber transmission, display unit A and the signal processing apparatus C different nothings of audio-video signal form because supportingMethod collocation forms complete product together.
By can learning of table 2 and table 3-table 5, display unit B and signal processing apparatus A, B, CProduce by same production firm. In the present embodiment, low 4 of the Byte2 of display unit B are" 1111 ", high 4 is " 1111 ", represents that display unit B not only can send or receive differential digital letterNumber, can also send or receive analog audio-video signal; Only can send due to signal processing apparatus A orReceive differential digital signal, therefore, between display unit B and signal processing apparatus A, only can transmit differenceData signal; Because signal processing apparatus B not only can send or receive differential digital signal, all rightSend or receive analog audio-video signal, therefore, between display unit B and signal processing apparatus B not onlyDifferential digital signal can be sent or receive, analog audio-video signal can also be sent or receive, but due toDisplay unit B sets preferential reception differential digital signal for reaching optimal display result, and is showing dressPut the preferential differential digital signal that receives between B and signal processing apparatus B; Due to signal processing apparatus C onlyCan send or receive analog audio-video signal, therefore between display unit B and signal processing apparatus C onlyCan send or receive analog audio-video signal.
It should be noted that, in the present invention, the safety certification of display unit and control module and signal processingThe inner preset secure authenticated information table of security authentication module of device, the table that can adopt the present invention to mentionThe data structure of 1～table 5, also can be needed by production firm self, defines suitable data structure, withTime can adopt more complicated shaking hands and authentication encryption algorithm.
The preset secure authenticated information table of table 1: display unit A
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | |
| Byte 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 |
| Byte 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 |
| Byte 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Byte 3 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 4 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 5 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 6 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 7 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
The preset secure authenticated information table of table 2: display unit B
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | |
| Byte 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 |
| Byte 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| Byte 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Byte 3 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 4 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 5 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 6 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 7 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
Table 3: the preset secure authenticated information table of signal processing apparatus A
Table 4: the preset secure authenticated information table of signal processing apparatus B
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | |
| Byte 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 |
| Byte 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Byte 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Byte 3 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 4 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 5 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 6 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
| Byte 7 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
Table 5: the preset secure authenticated information table of signal processing apparatus C
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | |
| Byte 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 |
| Byte 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Byte 2 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| Byte 3 | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved | Reserved |
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In sum, the present invention, can be logical in same transmission by adopting the mode of common transmitted passageOn road, transmit the digital audio-video signal of different agreement coding, effectively reduced the number of transmission channelAmount, makes the present invention utilize less transmission channel can realize the transmission of various protocols, has solved and has connectContradiction between mouthful compatibility and interface scale, makes electronic equipment of the present invention utilize small-scale(scale of coffret of the present invention is about and in background technology, puies forward interface scale coffret1/3～1/2) can realize the transmission of the differential signal of multiple rendezvous protocol coding; In addition, due to thisInvention is that the multimedia signal dispose module that can be used for carrying out acoustic processing and image processing is located atIn display unit, and make signal processing apparatus update time only need change technical development fasterInput signal processing module, and can not cause the waste of cost; And, due to multimedia letterNumber processing module is integrated in display unit and makes signal processing apparatus not need to consider tonequality againWith the problem of image quality, and without in the postpone of replacing signal processing device, sound quality and picture quality being enteredRow debugging, makes the use of electronic equipment of the present invention more convenient
In addition, in the present invention, because being set up, display unit and signal processing device be respectively equipped with safetyCertification and control module and security authentication module, to realize between display unit and signal processing apparatusMutual safety certification, both ensured the clarity of display device display frame, make it can be because showing dressPut and accessed inappropriate signal processing apparatus and caused the caused picture of data communication problem between the twoFace is unintelligible, also protects the rights and interests of production firm simultaneously, prevents that other people from copying the product of regular production manufacturer.
The above, be only preferred embodiment of the present invention, not the present invention done to any shapeRestriction in formula, although the present invention disclose as above with preferred embodiment, but not in order to limitThe present invention, any those skilled in the art, are not departing within the scope of technical solution of the present invention,When can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalence of equivalent variationsEmbodiment is not depart from technical solution of the present invention content, according to technical spirit pair of the present invention in every caseAny simple modification, equivalent variations and modification that above embodiment does, all still belong to skill of the present inventionIn the scope of art scheme.
Claims (14)
1. an electronic equipment, comprises display unit and signal processing apparatus, described display unitBe connected by a coffret with signal processing apparatus, it is characterized in that: described coffret comprisesOne multi-media signal coffret, described multi-media signal coffret comprises that multiple differential signals passDefeated passage, the differential signal of described multiple differential signal transmission channel transfer uses described display unitAnd one or more rendezvous protocols between described signal processing apparatus are encoded;
Described multiple differential signal transmission passage is divided into multiple transmission channel groups, these transmission channelsGroup is for transmitting the differential signal of different rendezvous protocol codings;
And, at least one the differential signal transmission passage in described multiple differential signal transmission passagesFor the common-use tunnel of different transmission channel groups;
Described display unit also comprises safety certification and control module, and described signal processing apparatus also wrapsDraw together security authentication module, described coffret also comprises for connecting described safety certification and controlling mouldThe security control interface of piece and described security authentication module, described safety certification and control module and peaceIn full authentication module, all preset secure authenticated information tables of data, described secure authenticated information tables of data is usedIn the certification that realizes display unit and signal processing apparatus production firm, and/or display unit and signalThe confirmation of the signal that can send or receive between treating apparatus.
2. electronic equipment as claimed in claim 1, is characterized in that, described display unit comprisesMultimedia signal dispose module, for being converted to described display unit by the multi-media signal receivingThe signal format that can show, described signal processing apparatus comprises input signal processing module, described inMulti-media signal coffret connects described multimedia signal dispose module and described input signal placeReason module, described in sending to for the multi-media signal that described input signal processing module is receivedMultimedia signal dispose module.
3. electronic equipment as claimed in claim 1 or 2, is characterized in that, described signal processingBetween device and display unit, utilizing codec or change-over switch to realize different rendezvous protocols compilesThe switching of the differential signal of code.
4. electronic equipment as claimed in claim 1, is characterized in that, described differential signal transmissionPassage is a differential pair, and the characteristic impedance of described differential pair is 100 ± 10 ohm.
5. electronic equipment as claimed in claim 1, is characterized in that, described multi-media signal passesDefeated interface comprises 8 differential signal transmission passages, and described 8 differential signal transmission passages are for realThe differential signal of existing USB2.0, USB3.0, HDMI1.4 and tetra-kinds of rendezvous protocol codings of V-By-1Transmission.
6. a display unit, is characterized in that, described display unit comprises a coffret, instituteState coffret and comprise a multi-media signal coffret, described multi-media signal coffret comprisesMultiple differential signal transmission passages, it is logical that described multiple differential signal transmission passages are divided into multiple transmissionRoad group, these transmission channel groups are for transmitting the differential signal of different rendezvous protocol codings, and instituteAt least one differential signal transmission passage of stating in multiple differential signal transmission passages is different transmissionThe common-use tunnel of passage group; Described coffret also comprises a security control interface, described demonstration dressPut and also comprise the safety certification and the control module that are connected with described security control interface, described safety is recognizedIn card and control module, store secure authenticated information tables of data, described secure authenticated information tables of data is usedWhether join with the signal processing apparatus being connected with described display unit in judging described display unitRight.
7. display unit as claimed in claim 6, is characterized in that, described multi-media signal passesUtilize defeated interface codec or change-over switch realize the differential signal of different rendezvous protocol codingsSwitching.
8. display unit as claimed in claim 6, is characterized in that, described display unit is also wrappedContaining multimedia signal dispose module, described multimedia signal dispose module and described multi-media signal passDefeated interface is connected, and can show for the multi-media signal receiving is converted to described display unitSignal format.
9. display unit as claimed in claim 6, is characterized in that, described differential signal transmissionPassage is a differential pair, and the characteristic impedance of described differential pair is 100 ± 10 ohm.
10. display unit as claimed in claim 6, is characterized in that, described multi-media signalCoffret comprises 8 differential signal transmission passages, and described 8 differential signal transmission passages are used forRealize the differential signal of USB2.0, USB3.0, HDMI1.4 and tetra-kinds of protocol code of V-By-1Transmission.
11. 1 kinds of signal processing apparatus, is characterized in that, described signal processing apparatus comprises a biographyDefeated interface, described coffret comprises a multi-media signal coffret, described multi-media signal passesDefeated interface comprises multiple differential signal transmission passages, and described multiple differential signal transmission passages are dividedFor multiple transmission channel groups, these transmission channel groups are for transmitting the difference of different rendezvous protocol codingsSignal, and at least one differential signal transmission passage in described multiple differential signal transmission passageFor the common-use tunnel of different transmission channel groups; Described coffret also comprises a security control interface,Described signal processing apparatus also comprises the security authentication module being connected with described security control interface, instituteState and in security authentication module, preset secure authenticated information tables of data, described secure authenticated information tables of dataFor judging described signal processing apparatus and the display unit being connected with described signal processing apparatusWhether match.
12. signal processing apparatus as claimed in claim 11, is characterized in that, described multimediaSignal transmission interface utilizes codec or switching over to realize the number of different rendezvous protocol codingsThe switching of word tone vision signal.
13. signal processing apparatus as claimed in claim 11, is characterized in that, described difference letterNumber transmission channel is a differential pair, and the characteristic impedance of described differential pair is 100 ± 10 ohm.
14. signal processing apparatus as claimed in claim 11, is characterized in that, described multimediaSignal transmission interface comprises 8 differential signal transmission passages, described 8 differential signal transmission passagesFor realizing the difference letter of USB2.0, USB3.0, HDMI1.4 and tetra-kinds of protocol code of V-By-1Number transmission.
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| CN104038718B (en) * | 2014-06-18 | 2017-09-01 | 广州晶序达电子科技有限公司 | A kind of Mini LVDS channel multiplexings interface and its channel signal time-sharing multiplexing method |
| CN106874740A (en) * | 2017-02-20 | 2017-06-20 | 硅谷数模半导体（北京）有限公司 | Authentication method, device and debugger based on USB microprocessors |
| CN106937070B (en) * | 2017-03-10 | 2020-03-10 | 成都振芯科技股份有限公司 | Bidirectional control method in FPD-LINK low-voltage differential signal video transmission |
| CN108259946A (en) * | 2018-03-05 | 2018-07-06 | 长沙开雅电子科技有限公司 | A kind of novel audio signal and video signal transmission control device |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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