CN101533618B - Display device, display method and computer - Google Patents
Display device, display method and computer Download PDFInfo
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- CN101533618B CN101533618B CN2008101020223A CN200810102022A CN101533618B CN 101533618 B CN101533618 B CN 101533618B CN 2008101020223 A CN2008101020223 A CN 2008101020223A CN 200810102022 A CN200810102022 A CN 200810102022A CN 101533618 B CN101533618 B CN 101533618B
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Abstract
The invention provides a display device, a display method and a computer. The display device comprises a liquid crystal display screen, a first LVDS signal module, a second LVDS signal module, a control module and an LVDS switch module, wherein the first LVDS signal module is used for converting an inputted narrowband signal to a first LVDS signal; the second LVDS signal module is used for converting an inputted wideband signal to a second LVDS signal; the control module is used for determining an LVDS signal to be outputted to the liquid crystal display screen finally and outputting a corresponding control command; and the LVDS switch module is used for outputting the determined LVDS signal to be outputted to the liquid crystal display screen finally according to the control command. The method comprises the following steps: converting the inputted narrowband signal to the first LVDS signal, and converting the inputted wideband signal to the second LVDS signal; and determining and outputting the LVDS signal to be outputted. The technical proposal adopted by the invention can realize the support to a DP signal of a novel digital interface for video and audio, and avoid the signal distortion at the same time.
Description
Technical field
The present invention relates to the demonstration field, particularly relate to a kind of display unit, display packing and computer.
Background technology
DP (DisplayPort) is a kind of new digital audio-video interface of the VESA of video electronic association definition; Be used to replace traditional analog video interface Video Graphics Array (VGA, Video Graphic Array) interface, digital visual interface (DVI; Digital Visual Interface) and HDMI (HDMI; High Definition Multimedia), its cost and bandwidth all have superiority than the latter, and have increased the support to the usb data transmission.Therefore, DP begins to be applied on the display product gradually.
Existing traditional LCD can only be handled the input signal source of VGA, DVI and/or HDMI usually, only is provided with VGA, DVI and/or HDMI interface, is not provided with the DP interface that can receive the DP signal.Fig. 1 is the displaying principle sketch map that has traditional LCD now.Among Fig. 1, exemplary, the DVI interface is a DVI-Digital.Like Fig. 1, existing LCD is handled VGA, DVI and/or the HDMI signal that input source is imported through existing traditional convergent-divergent control module such as Scalar chip, is converted into the output of LVDS signal, shields with driving liquid crystal.
At present, support the display of DP interface that following two kinds of implementations are arranged.
Scheme one is directly driving (Direct Drive Monitor is called for short DDM), is exactly the input of DP signal, converts the LVDS signal after the decoding into, directly drives liquid crystal display screen.Particularly, please refer to the displaying principle sketch map of DDM display shown in Figure 2.Existing DDM chip capable of using such as DDM transmitter chip are realized in concrete the realization.The shortcoming of this scheme is can only support the DP input, for traditional VGA; Input signals such as DVI can't be supported; Be not easy to user's display upgrading, and, then can't support for the non-physical resolution of liquid crystal display screen because convergent-divergent (scaling) function is not provided.Therefore, this scheme only is used for must arrange in pairs or groups particular host special machine and notebook computer basically, and can't be applied to general LCD.
Scheme two is to utilize one can receive and comprise DVI, DP, VGA and HDMI (HDMI; High Definition Multimedia) conveyer of various video signal input such as receives this various video signal; And output TTL signal; And then convert the DVI signal into, export to traditional display Scalar at last.Particularly, please refer to the displaying principle sketch map of many input displays shown in Figure 3.The advantage of this scheme is to have solved the problem of multiple signal input.But shortcoming is that conversion of signals has repeatedly caused data distortion, and this scheme is owing to being special chip, so be not easy to popularization, compatible bad and cost height.In addition, this scheme can't only realize through carrying out less change on the basis to existing traditional monitor.
Summary of the invention
Embodiments of the invention provide a kind of display unit, display packing and computer, with the support of realization to new digital audio-video interface DP signal, and avoid distorted signals simultaneously.
To achieve these goals, on the one hand, a kind of display unit is provided, comprises LCDs, wherein, also comprise:
The first Low Voltage Differential Signal module is used for converting the input narrow band signal into first Low Voltage Differential Signal, and said narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal;
The second Low Voltage Differential Signal module is used for converting the broadband signal of importing into second Low Voltage Differential Signal with the mode of direct driving, and said broadband signal comprises: digital audio/video interface DP signal;
Control module is connected with the said second Low Voltage Differential Signal module with the said first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export said LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to said control module output, exports the said Low Voltage Differential Signal that finally will export to said LCDs.
Preferably, described device, wherein, the said first Low Voltage Differential Signal generation module converts the narrow band signal of said input into first Low Voltage Differential Signal through a convergent-divergent control module.
On the other hand, a kind of display packing is provided, is used on LCDs, showing, wherein, comprising:
Convert the narrow band signal of input into first Low Voltage Differential Signal, and convert the broadband signal of importing into second Low Voltage Differential Signal with the mode of direct driving; Said narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal, and said broadband signal comprises: digital audio/video interface DP signal;
Determine the Low Voltage Differential Signal that finally will export LCDs to, and the output control commands corresponding;
According to said control command, confirm that with said the Low Voltage Differential Signal that finally will export exports said LCDs to.
Another aspect provides a kind of computer, comprising: LCD and main frame, and wherein, said LCD comprises:
The first Low Voltage Differential Signal module is used for converting the narrow band signal of input into first Low Voltage Differential Signal, and said narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal;
The second Low Voltage Differential Signal module is used for converting the broadband signal of importing into second Low Voltage Differential Signal with the mode of direct driving, and said broadband signal comprises: digital audio/video interface DP signal;
Control module is connected with the said second Low Voltage Differential Signal module with the said first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export said LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to said control module output, exports the said Low Voltage Differential Signal that finally will export to said LCDs.
Technique scheme has following technique effect:
Through the convergent-divergent control module in the first Low Voltage Differential Signal module such as the traditional monitor and the second low-voltage differential module such as direct driver module are combined; Can be on the basis of all functions that keep traditional monitor and performance; Realization is to the support of broadband signal such as DP signal; Thereby both can solve the problem that above-mentioned prior art scheme one can't realize many inputs; Can avoid distorted signals and the compatibility issue of chip chamber in the above-mentioned prior art scheme two again, be convenient to freely arranging in pairs or groups of product between different manufacturers;
In addition; The technical scheme of the embodiment of the invention can realize through existing display is carried out transformation and upgrade; Promptly utilize technical scheme of the present invention can be implemented on the existing display and increase broadband signal interface such as DP interface; And former display circuit design remains unchanged basically, can reduce the time and the input of exploitation like this.
Description of drawings
Fig. 1 is the displaying principle sketch map of LCD traditional in the prior art;
Fig. 2 is the displaying principle sketch map of DDM display in the prior art;
Fig. 3 comprises the displaying principle sketch map of many input displays of DP signal input for support in the prior art;
Fig. 4 is the structural representation of the display unit of one embodiment of the invention;
Fig. 5 is a kind of concrete realization of the display unit of the embodiment of the invention;
Fig. 6 is the structural representation of the display unit of another embodiment of the present invention;
Fig. 7 is the schematic flow sheet of the display packing of one embodiment of the invention;
Fig. 8 is the schematic flow sheet of the display packing of another embodiment of the present invention.
Embodiment
For technical problem, technical scheme and advantage that the embodiment of the invention will be solved is clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
Fig. 4 is the structural representation of one embodiment of the invention display unit.Like Fig. 4; The display unit 400 of one embodiment of the invention comprises: the first Low Voltage Differential Signal (LVDS; Low Voltage DifferentialSignaling) module 401, the narrow band signal such as VGA, DVI and/or the HDMI conversion of signals that are used for input are first Low Voltage Differential Signal; The second Low Voltage Differential Signal module 402, the broadband signal such as the DP conversion of signals that are used for input are second Low Voltage Differential Signal; Control module 403; Be connected with the second Low Voltage Differential Signal module with the first Low Voltage Differential Signal module; Being used to determine the Low Voltage Differential Signal that finally will export LCDs 405 to is a LVDS signal or the 2nd LVDS signal, and the output control commands corresponding; Low Voltage Differential Signal switch module 404 is used for the control command according to control module output, exports the LVDS signal of determining that finally will export to LCDs 405 and shows.
Fig. 5 is a kind of concrete realization of the display unit of the embodiment of the invention.Like Fig. 5; In the concrete realization of this display unit; The one LVDS module is made up of the conventional liquid crystal circuit; Is that Scalar chip 501 is realized the processing to traditional narrow band signal such as VGA, DVI and/or HDMI input signal through a convergent-divergent control module like a traditional convergent-divergent control chip, converts input signal the LVDS signal of driving liquid crystal screen into, and can realize the zoom function to input signal; The 2nd LVDS module comprises direct driver module; Convert the 2nd LVDS signal into after being used for to import broadband signal such as DP signal decoding through the mode of direct driving; Directly driving liquid crystal is shielded; Exemplarily, directly driver module can be for being used to realize the DDM chip 502 of existing DDM escope; Control module can realize through microprocessor MCU 503; The LVDS switch module can be realized through LVDS switch chip 504; Under the control of MCU, LVDS switch chip 504 will confirm finally that the corresponding LVDS signal of input source of output exports LCDs 505 to.
In this concrete realization; Because the output of the Scalar chip of traditional monitor and the output of DDM all are the LVDS signals; And the LCDs reception also is the LVDS signal; Therefore use a LVDS switch chip, can select the signal source of finally desiring to export to LCDs (PANEL) through the control of microprocessor MCU.
The operation principle of the concrete realization of this display unit once is described below:
When any one or a plurality of signal among input DVI, VGA, the HDMI were given Scalar chip 401, the Scalar chip produces also to be exported a corresponding LVDS signal and gives LVDS switch (LVDS Switch) chip.When input DP signal was given DDM chip 402, the DDM chip produced and exports corresponding the 2nd LVDS signal and gives LVDS switch chip 404.Microprocessor MCU403 control LVDS switch chip selects finally to export to the signal source of LCDs.
Foregoing circuit makes the Scalar chip that LVDS output arranged all the time, only if the vision signal source of its reception does not all have signal, this source comprises VGA, DVI, reaches the one or more any combination among the HDMI.Simultaneously, as long as DP has the signal input, the DDM chip is also just exported LVDS automatically.At this moment; Can be according to user's demand, system's situation at that time or the rule that is provided with in advance; Selecting the LVDS signal of final output by MCU is the LVDS signal of Scalar chip output or the LVDS of DDM chip output; Just be chosen on the LCDs input signal source that shows the Scalar chip: VGA, DVI and/or HDMI still show the input signal source of DDM chip: the DP signal.
Preferably; When all signal sources all do not have the signal input, the exportable indicative displaying contents of Scalar chip (OSD, On Screen Display); MCU control LVDS switch chip makes the LVDS signal corresponding to this OSD of Scalar be able to output, and on LCDs, shows.
Preferably; LVDS signal in DDM chip and the output of Scalar chip between transfer period, mess code occur in order to prevent display screen to the LVDS switch chip, can select to make system to be in the blank screen state; For example, close momently in the LCD fluorescent tube and to the power supply of LCDs.
Fig. 6 is the structural representation of the display unit of another embodiment of the present invention.Like Fig. 6, in the display unit 600 of this embodiment, a LVDS module 601 comprises: a LVDS generation module 6011 and first effective input source signalisation module 6012; The first low LVDS generation module, be used for the narrow band signal of input such as VGA, DVI, and HDMI convert a LVDS signal into; First effective input source signalisation module is used for effective input signal source of input the one LVDS generation module is notified to control module; Similarly, the 2nd LVDS module 602 comprises: the 2nd LVDS generation module 6021 and second effective input source signalisation module 6022; The 2nd LVDS generation module, the broadband signal such as the DP conversion of signals that are used for input are the 2nd LVDS signal; Second effective input source signalisation module is used for effective input signal source of input the 2nd LVDS generation module is notified to control module 603; Control module 603 comprises: module 6031 is selected in the input signal source prompting; Be used for effective input signal source of a LVDS generation module and/or the 2nd LVDS generation module is prompted to the user, supply the user to select effective input signal source of desiring on LCDs, to export; The first control command output module 6032; Be used for the input signal source chosen according to the user, the Low Voltage Differential Signal that output control command indication LVDS switch module 604 receives only and output is changed out according to the said input signal source of choosing on LCDs 605; The second control command output module 6033 is used to export the LVDS generation module that control command control do not comprise the input signal source that the user chooses and stops to change the LVDS signal, can play energy-conservation effect like this; The 3rd control command output module 6034; The effective input signal source that is used at a said LVDS generation module and/or the second differential signal generation module is a plurality of; And the input signal source that the user selects is when being merely in said a plurality of effective input signal source one or several; The output control command controls a said LVDS generation module and/or the 2nd LVDS generation module one or several input signal source that said user is chosen converts LVDS into, and need not to convert other unchecked signal source to LVDS again.
Similar with the said embodiment of Fig. 4, in the concrete realization of this embodiment, a LVDS module also can be made up of the conventional liquid crystal circuit, as being that the Scalar chip is realized through traditional convergent-divergent control chip; The 2nd LVDS module can be realized that also control module can realize through a microprocessor MCU by the DDM chip.With different being of the said embodiment of Fig. 4; In this embodiment, when a LVDS generation module such as Scarlar chip and the 2nd LVDS generation module such as DDM chip all had effective signal source input, which was effective for himself corresponding input signal source of its above-mentioned corresponding notification module notice MCU capable of using; Such as DP; VGA or DP, VGA, combination in any such as DVI; And when having only one to have the input of effective signal source in Scarlar chip and the DDM chip, which is effective for the input signal that this chip with effective input signal source can be through its corresponding notification module notice MCU oneself correspondence.And MCU can utilize its input signal source prompting to select module that the user is carried out effective input signal source indication; For example; MCU can select for the user being used for indicating effective input source in the indicative displaying contents of display reminding property content (OSD, the On Screen Display) menu, then; The user selects the input signal of its needs in OSD; And the input signal source of choosing according to the user, MCU can be through its control commands corresponding output module output control commands corresponding, and takes the control corresponding action.
Illustrate when all there are effective input signal source in a LVDS generation module such as Scalar chip and the 2nd LVDS generation module such as DDM chip the action that MCU takes according to user's selection below:
1) when the user selects DP, MCU output control command notice LVDS switch only receives from the LVDS signal of DDM module and exports to LCDs; And MCU to give the control command of Scalar chip be that output can be arranged, also not output.Certainly, from energy-conservation, the conversion of MCU second control command output module notice also capable of using Scalar chip stop signal, whether have signal input, and inform MCU result if only monitoring each input interface;
2) when the user selects among VGA, DVI, the HDMI any signal source; MCU at first informs the Scalar chip of traditional LCD MODULE; Adopt which input signal source to remove to generate the LVDS signal, MCU notice LVDS switch only receives from the LVDS signal of the Scalar chip of traditional LCD MODULE and outputs it to LCDs then; Certainly, from energy savings, the MCU second control command output module also capable of using notice DDM stops to convert DP into LVDS, only keeps the monitoring to the DP input, and with real-time informing MCU as a result.
After user's selection was confirmed, MCU can be stored in user's selection result among the EEPROM, when start shooting next time again and a plurality of effective input source is arranged, system can be from EEPROM the last selection result of invoke user automatically.When the selection result of storage was not in the input source scope at this, corresponding output can be selected according to the input source priority orders of exploitation or Default Value by system.
And a plurality of situation is arranged for effective input source; As all effectively being example with VGA, DVI, HDMI; When if the user selects among VGA, DVI, the HDMI any one, MCU at first exports control command notice or control Scalar chip, adopts the input source of this selection to go conversion to generate the LVDS signal; MCU output control command notice LVDS switch only receives the LVDS signal from the Scalar chip then, and exports this LVDS signal to LCDs; And the also exportable control command control of MCU Scalar chip only carries out the input signal source of choosing the conversion of LVDS, and stops the conversion of LVDS signal is carried out in other unchecked useful signal source.Certainly, MCU can be simultaneously to the monitoring of DP input, and with real-time informing MCU as a result.
The embodiment of the invention also discloses a kind of display packing.Fig. 7 is the schematic flow sheet of embodiment of the invention display packing.Like Fig. 7, the display packing of the embodiment of the invention is used on LCDs, showing, specifically comprises the steps:
Step 701 is first Low Voltage Differential Signal with narrow band signal such as VGA, DVI and/or the HDMI conversion of signals imported, and the broadband signal such as the DP conversion of signals that reach input are second Low Voltage Differential Signal;
Step 702 is determined the Low Voltage Differential Signal that finally will export LCDs to, and the output control commands corresponding; Exemplarily, can confirm to export which input source according at that time situation of user's demand or system, the rule that is provided with in advance;
Step 703 according to this control command, exports the Low Voltage Differential Signal of determining that finally will export to said LCDs.
Preferably, be said first Low Voltage Differential Signal through a convergent-divergent control module with VGA, DVI and/or the HDMI conversion of signals of said input, exemplarily, can directly utilize the Scalar chip of available liquid crystal display to realize said convergent-divergent control module.
Preferably, convert said second Low Voltage Differential Signal into behind the DP signal decoding of mode through direct driving, exemplarily, can directly utilize the DDM chip that has the DDM escope now to realize the decoding and the conversion of this DP signal said input.
Fig. 8 is the schematic flow sheet of the display packing of another embodiment of the present invention.In this embodiment, select to confirm and the output signal according to the user.Like Fig. 8, the display packing of the embodiment of the invention comprises the steps:
Preferably, in step 803, only can also control and convert the said input signal source of choosing into Low Voltage Differential Signal, and stop to convert other unchecked effective input signal source into the LVDS signal.
The invention also discloses a kind of computer, comprising: LCD and main frame is characterized in that said LCD comprises:
The first Low Voltage Differential Signal module, the VGA, DVI and/or the HDMI conversion of signals that are used for input are first Low Voltage Differential Signal;
The second Low Voltage Differential Signal module, the DP conversion of signals that is used for input is second Low Voltage Differential Signal;
Control module is connected with the second Low Voltage Differential Signal module with the said first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export said LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to said control module output, confirms that with said the Low Voltage Differential Signal that finally will export exports said LCDs to.
Technical scheme of the present invention has broken through those skilled in the art when supporting that in the face of display broadband signal is imported the problem of importing like the DP signal; Usually the DP interface that on display, increases a support DP signal that will consider; And again the design special chip can handle the conventional thinking of the multiple audio-video signal that comprises DP simultaneously; And provided a kind of DP display solution with new approaches, and through being integrated, existing direct driving DDM scheme and the existing traditional displaying scheme that can only handle narrow band signals such as VGA, DVI, HDMI realize the DP Signal Processing, so both solved the problem of many inputs; Avoided distorted signals again; And owing to can use existing chip, and need not design special chip again, both provided cost savings, reduced input; Avoid the compatibility issue of chip chamber again, and be convenient to freely arranging in pairs or groups of product between different manufacturers.
In addition; The technical scheme of the embodiment of the invention can realize through existing display is carried out transformation and upgrade; Promptly utilize technical scheme of the present invention can be implemented on the existing display and increase the DP interface; And former display circuit design remains unchanged basically, can reduce the time of exploitation like this and drop into reducing.
Classical signals source such as VGA, DVI, the needed bandwidth of HDMI signal are not high, because its vision signal adopts RGB to be located away from the different signal lines, and transmission simultaneously.And novel DP signaling interface is with on all videos signal and the integrated same holding wire of clock signal, adopts the difference transmission, so needs bandwidth more than at least three times under the same level situation.The chip of the reception DP signal that Here it is needs very high speed, and development difficulty drops into, and product cost is all high than classical signals, before market demand is also very not big, is unworthy dropping into the whole signals of a lot of developments of resources and inherits chip together.And technique scheme of the present invention is exactly to realize the preferable solution of multichannel input in this case.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the said principle of the embodiment of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (14)
1. a display unit comprises LCDs, it is characterized in that, also comprises:
The first Low Voltage Differential Signal module; Be used for converting the narrow band signal of importing into first Low Voltage Differential Signal through a convergent-divergent control module, said narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal;
The second Low Voltage Differential Signal module is used for converting the broadband signal of importing into second Low Voltage Differential Signal with the mode of direct driving, and said broadband signal comprises: digital audio/video interface DP signal;
Control module is connected with the said second Low Voltage Differential Signal module with the said first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export said LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to said control module output, exports the said Low Voltage Differential Signal that finally will export to said LCDs.
2. device according to claim 1 is characterized in that,
The said first Low Voltage Differential Signal module comprises:
The first Low Voltage Differential Signal generation module is used for converting the narrow band signal of said input into first Low Voltage Differential Signal;
First effective input source signalisation module is used for effective input signal source of the input first Low Voltage Differential Signal generation module is notified to said control module;
The said second Low Voltage Differential Signal module comprises:
The second Low Voltage Differential Signal generation module is used for converting the broadband signal of input into second Low Voltage Differential Signal;
Second effective input source signalisation module is used for effective input signal source of the said second Low Voltage Differential Signal generation module of input is notified to said control module.
3. device according to claim 2 is characterized in that, said control module comprises:
Module is selected in the input signal source prompting, is used for effective input signal source of the said first Low Voltage Differential Signal generation module and the second Low Voltage Differential Signal generation module is prompted to the user, supplies the user to select effective input signal source of desiring on LCDs, to show;
The first control command output module is used for the input signal source chosen according to the user, and the output control command indicates said Low Voltage Differential Signal switch module to receive only and export the Low Voltage Differential Signal of changing out according to the said input signal source of choosing.
4. device according to claim 3 is characterized in that, said control module also comprises:
The second control command output module is used to export the Low Voltage Differential Signal generation module that control command control do not comprise the said input signal source of choosing and stops to change Low Voltage Differential Signal.
5. device according to claim 3; It is characterized in that; If effective input signal source of the said first Low Voltage Differential Signal generation module and/or the second Low Voltage Differential Signal generation module is a plurality of; And when the input signal source that the user selects was merely in said a plurality of effective input signal source one or several, said control module also comprised:
The 3rd control command output module is used to export control command and controls one or several input signal source that the said first Low Voltage Differential Signal generation module and/or the second Low Voltage Differential Signal generation module only choose said user and convert Low Voltage Differential Signal into.
6. device according to claim 2 is characterized in that, the said first Low Voltage Differential Signal generation module comprises:
The screen display reminding module is used for when the said first and second Low Voltage Differential Signal modules are not all exported Low Voltage Differential Signal, output can be on said LCDs the prompts displayed content.
7. device according to claim 1 is characterized in that, also comprises:
The blank screen control module is used for being transferred between the transfer period of said Low Voltage Differential Signal switch module at said first and second Low Voltage Differential Signals, makes said LCDs be in the blank screen state.
8. a display packing is used on LCDs, showing, it is characterized in that, comprising:
Convert the narrow band signal of importing into first Low Voltage Differential Signal through a convergent-divergent control module, and convert the broadband signal of importing into second Low Voltage Differential Signal with the mode of direct driving; Said narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal, and said broadband signal comprises: digital audio/video interface DP signal;
Determine the Low Voltage Differential Signal that finally will export LCDs to, and the output control commands corresponding;
According to said control command, confirm that with said the Low Voltage Differential Signal that finally will export exports said LCDs to.
9. method according to claim 8 is characterized in that, if there is not the signal source input, then on said LCDs, exports indicative displaying contents.
10. method according to claim 8 is characterized in that, selects to export Low Voltage Differential Signal to the said LCDs that finally will export through the Low Voltage Differential Signal switch module.
11. method according to claim 10 is characterized in that, is transferred between the transfer period of Low Voltage Differential Signal switch module at said first and second Low Voltage Differential Signals, makes said LCDs be in the blank screen state.
12. method according to claim 8 is characterized in that, the said Low Voltage Differential Signal of confirming finally will export to LCDs, and the controlled step of output control commands corresponding comprises:
All effective input signal sources are prompted to the user, supply the user to select effective input signal source of desiring on LCDs, to export;
According to user's selection, the control of output control command only will be exported to said LCDs by the Low Voltage Differential Signal that the input signal source of choosing is changed out.
13. method according to claim 12 is characterized in that, in the said controlled step, also comprises: according to user's selection, the output control command stops to convert unchecked input signal source into Low Voltage Differential Signal.
14. a computer comprises: LCD and main frame is characterized in that said LCD comprises:
The first Low Voltage Differential Signal module; Be used for converting the narrow band signal of importing into first Low Voltage Differential Signal through a convergent-divergent control module, said narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal;
The second Low Voltage Differential Signal module is used for converting the broadband signal of input into second Low Voltage Differential Signal with the mode of direct driving, and said broadband signal comprises: digital audio/video interface DP signal;
Control module is connected with the said second Low Voltage Differential Signal module with the said first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to said control module output, exports the said Low Voltage Differential Signal that finally will export to said LCDs.
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| CN103559855A (en) * | 2013-09-16 | 2014-02-05 | 苏州佳世达电通有限公司 | Display system and signal processing method |
| CN104464681B (en) * | 2013-09-18 | 2017-08-15 | 瑞昱半导体股份有限公司 | Signal converting circuit and forwarding method and signal receiving circuit and method of reseptance |
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