CN101533618A - Display device, display method and computer - Google Patents
Display device, display method and computer Download PDFInfo
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- CN101533618A CN101533618A CN200810102022A CN200810102022A CN101533618A CN 101533618 A CN101533618 A CN 101533618A CN 200810102022 A CN200810102022 A CN 200810102022A CN 200810102022 A CN200810102022 A CN 200810102022A CN 101533618 A CN101533618 A CN 101533618A
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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 device, display packing and computing machine.
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 (High Definition Multimedia Interface) (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 synoptic diagram that has traditional LCD now.Among Fig. 1, exemplary, the DVI interface is a DVI-Digital.As Fig. 1, existing LCD is handled VGA, DVI and/or the HDMI signal that input source is imported by existing traditional convergent-divergent control module such as Scalar chip, is converted into the output of LVDS signal, to drive LCDs.
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, is converted to the LVDS signal after the decoding, directly drives liquid crystal display.Particularly, please refer to the displaying principle synoptic diagram of DDM display shown in Figure 2.Can utilize existing DDM chip such as DDM transmitter chip to realize in the specific implementation.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 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 (High Definition Multimedia Interface) (HDMI, High Definition Multimedia) forwarder of various video signal input such as receives this various video signal, and output TTL signal, and then be converted to the DVI signal, export to traditional display Scalar at last.Particularly, please refer to the displaying principle synoptic diagram 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 by carrying out less change on the basis to existing traditional monitor.
Summary of the invention
Embodiments of the invention provide a kind of display device, display packing and computing machine, 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, provide a kind of display device, comprise LCDs, wherein, also comprise:
The first Low Voltage Differential Signal module is used for the input narrow band signal is converted to first Low Voltage Differential Signal;
The second Low Voltage Differential Signal module is used for the broadband signal of input is converted to second Low Voltage Differential Signal;
Control module is connected with the described second Low Voltage Differential Signal module with the described first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export described LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to described control module output, exports the described Low Voltage Differential Signal that finally will export to described LCDs.
Preferably, described device, wherein, described narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal; Described broadband signal comprises: digital audio/video interface DP signal.
Preferably, described device, wherein, the described first Low Voltage Differential Signal generation module is converted to first Low Voltage Differential Signal by a convergent-divergent control module with the narrow band signal of described input.
Preferably, described device, wherein, the described second Low Voltage Differential Signal generation module comprises:
The direct drive module is used for being converted to described second Low Voltage Differential Signal after the broadband signal decoding of mode with described input by direct driving.
On the other hand, provide a kind of display packing, be used on LCDs, showing, wherein, comprising:
The narrow band signal of input is converted to first Low Voltage Differential Signal, and the broadband signal of input is converted to second Low Voltage Differential Signal;
Determine the Low Voltage Differential Signal that finally will export LCDs to, and the output control commands corresponding;
According to described control command, determine that with described the Low Voltage Differential Signal that finally will export exports described LCDs to.
Preferably, described method, wherein, described narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal; Described broadband signal comprises: digital audio/video interface DP signal.
Another aspect provides a kind of computing machine, comprising: LCD and main frame, and wherein, described LCD comprises:
The first Low Voltage Differential Signal module is used for the narrow band signal of input is converted to first Low Voltage Differential Signal;
The second Low Voltage Differential Signal module is used for the broadband signal of input is converted to second Low Voltage Differential Signal;
Control module is connected with the described second Low Voltage Differential Signal module with the described first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export described LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to described control module output, exports the described Low Voltage Differential Signal that finally will export to described LCDs.
Technique scheme has following technique effect:
By with the convergent-divergent control module in the first Low Voltage Differential Signal module such as the traditional monitor with the second low-voltage differential module such as direct drive is module integrated is in the same place, 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 the distorted signals in the above-mentioned prior art scheme two and the compatibility issue of chip chamber 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 by 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 substantially, can reduce the time and the input of exploitation like this.
Description of drawings
Fig. 1 is the displaying principle synoptic diagram of LCD traditional in the prior art;
Fig. 2 is the displaying principle synoptic diagram of DDM display in the prior art;
Fig. 3 comprises the displaying principle synoptic diagram of many input displays of DP signal input for support in the prior art;
Fig. 4 is the structural representation of the display device of one embodiment of the invention;
Fig. 5 is a kind of specific implementation of the display device of the embodiment of the invention;
Fig. 6 is the structural representation of the display device 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 matters, technical scheme and advantage that the embodiment of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 4 is the structural representation of one embodiment of the invention display device.As Fig. 4, the display device 400 of one embodiment of the invention comprises: the first Low Voltage Differential Signal (LVDS, Low Voltage DifferentialSignaling) module 401, be used for will input narrow band signal such as VGA, DVI and/or HDMI conversion of signals be 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 specific implementation of the display device of the embodiment of the invention.As Fig. 5, in this display device specific implementation, the one LVDS module is made 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 by a convergent-divergent control module as a traditional convergent-divergent control chip, input signal is converted to the LVDS signal that drives LCDs, and can realizes zoom function input signal; The 2nd LVDS module comprises the direct drive module, be converted to the 2nd LVDS signal after being used for to import broadband signal such as DP signal decoding by the mode of direct drive, directly drive LCDs, exemplarily, the direct drive module can be for being used to realize the DDM chip 502 of existing DDM escope; Control module can realize by microprocessor MCU 503; The LVDS switch module can be realized by LVDS switch chip 504; Under the control of MCU, LVDS switch chip 504 will determine finally that the LVDS signal of the input source correspondence of output exports LCDs 505 to.
In this specific implementation, 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) by the control of microprocessor MCU.
The principle of work of the specific implementation of this display device 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 be arranged all the time, unless 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 sets 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 is exported the LVDS signal corresponding to this OSD of Scalar, and shows on LCDs.
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 device of another embodiment of the present invention.As Fig. 6, in the display device 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 will input narrow band signal such as VGA, DVI, and HDMI be converted to a LVDS signal; 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, select effective input signal source of desiring on LCDs, to export for the user; 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 described 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 steering order output module 6034, the effective input signal source that is used at a described 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 only being in described a plurality of effective input signal source one or several, the output control command controls a described LVDS generation module and/or the 2nd LVDS generation module one or several input signal source that described user is chosen is converted to LVDS, and need not to convert other unchecked signal source to LVDS again.
Similar with the described embodiment of Fig. 4, in the specific implementation of this embodiment, a LVDS module also can be made of the conventional liquid crystal circuit, as being that the Scalar chip is realized by traditional convergent-divergent control chip; The 2nd LVDS module can be realized that also control module can realize by a microprocessor MCU by the DDM chip.With different being of the described 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 have effective signal source input, it can utilize the input signal source of himself correspondence of above-mentioned corresponding notification module notice MCU, and which is effective, 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 by 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 be used for the indicative displaying contents (OSD of display reminding content, On Screen Display) indicating effective input source in the menu selects for the user, 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 export control commands corresponding by its control commands corresponding output module, 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 steering order of Scalar chip be that output can be arranged, also not output.Certainly, from energy-conservation, MCU also can utilize the conversion of second control command output module notice Scalar chip stop signal, and whether have the signal input, and inform MCU result if only monitoring each input interface;
2) when the user selects among VGA, DVI, the HDMI any one 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, MCU also can utilize second control command output module notice DDM to stop DP being converted to LVDS, only keeps the monitoring to the DP input, and with real-time informing MCU as a result.
After user's selection was determined, 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 situations 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, adopt 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.As Fig. 7, the display packing of the embodiment of the invention is used for showing on LCDs, 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 of input, and broadband signal such as DP conversion of signals that will input be 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 determine which input source of output according at that time situation of user's demand or system, the rule that sets in advance;
Step 703 according to this control command, exports the Low Voltage Differential Signal of determining that finally will export to described LCDs.
Preferably, be described first Low Voltage Differential Signal by a convergent-divergent control module with VGA, DVI and/or the HDMI conversion of signals of described input, exemplarily, can directly utilize the Scalar chip of available liquid crystal display to realize described convergent-divergent control module.
Preferably, be converted to described second Low Voltage Differential Signal behind the DP signal decoding of mode by 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 described input.
Fig. 8 is the schematic flow sheet of the display packing of another embodiment of the present invention.In this embodiment, select to determine and output signal according to the user.As Fig. 8, the display packing of the embodiment of the invention comprises the steps:
Step 802 is prompted to the user with the narrow band signal of input and/or the effective signal source in the broadband signal, exemplarily, can point out by the OSD menu, and the user can be according to effective input signal source of pointing out selection to desire to export on LCDs;
Preferably, in step 803, only can also control the described input signal source of choosing is converted to Low Voltage Differential Signal, and stop other unchecked effective input signal source is converted to the LVDS signal.
The invention also discloses a kind of computing machine, comprising: LCD and main frame is characterized in that described LCD comprises:
The first Low Voltage Differential Signal module, VGA, the 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 described first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export described LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to described control module output, determines that with described the Low Voltage Differential Signal that finally will export exports described 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 as the DP signal; usually the DP interface that on display, increases a support DP signal that will consider; and again the design specialized 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; by existing direct current DDM scheme traditional can only be handled VGA with existing; DVI; the displaying scheme of narrow band signals such as HDMI is integrated and is realized 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 to redesign special chip; 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 by 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 substantially, can reduce the time of exploitation like this and reduce input.
Classical signal 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 wires, and transmission simultaneously.And novel DP signaling interface is with on all videos signal and the integrated same signal 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 cost of products, was unworthy dropping into the whole signals of a lot of developments of resources and inherits chip together before market demand is also very not big all than the classical signal height.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 described principle of the embodiment of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (21)
1. a display device comprises LCDs, it is characterized in that, also comprises:
The first Low Voltage Differential Signal module is used for the narrow band signal of input is converted to first Low Voltage Differential Signal;
The second Low Voltage Differential Signal module is used for the broadband signal of input is converted to second Low Voltage Differential Signal;
Control module is connected with the described second Low Voltage Differential Signal module with the described first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export described LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to described control module output, exports the described Low Voltage Differential Signal that finally will export to described LCDs.
2. device according to claim 1 is characterized in that, described narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal; Described broadband signal comprises: digital audio/video interface DP signal.
3. device according to claim 1 and 2 is characterized in that, the described first Low Voltage Differential Signal module is converted to first Low Voltage Differential Signal by a convergent-divergent control module with the narrow band signal of described input.
4. device according to claim 1 and 2 is characterized in that, the described second Low Voltage Differential Signal generation module comprises:
The direct drive module is used for being converted to described second Low Voltage Differential Signal after the broadband signal decoding of mode with described input by direct driving.
5. device according to claim 1 is characterized in that,
The described first Low Voltage Differential Signal module comprises:
The first Low Voltage Differential Signal generation module is used for the narrow band signal of described input is converted to first Low Voltage Differential Signal;
First effective input source signalisation module is used for effective input signal source of the described input first Low Voltage Differential Signal generation module is notified to described control module;
The described second Low Voltage Differential Signal module comprises:
The second Low Voltage Differential Signal generation module is used for the broadband signal of input is converted to second Low Voltage Differential Signal;
Second effective input source signalisation module is used for effective input signal source of the described second Low Voltage Differential Signal generation module of described input is notified to described control module;
6. according to claim 1,2 or 5 described devices, it is characterized in that described control module comprises:
Module is selected in the input signal source prompting, is used for effective input signal source of the described first Low Voltage Differential Signal generation module and the second Low Voltage Differential Signal generation module is prompted to the user, selects effective input signal source of desiring to show on LCDs for the user;
The first control command output module is used for the input signal source chosen according to the user, and the output control command indicates described Low Voltage Differential Signal switch module to receive only and export the Low Voltage Differential Signal of changing out according to the described input signal source of choosing.
7. device according to claim 6 is characterized in that, described 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 described input signal source of choosing and stops to change Low Voltage Differential Signal.
8. device according to claim 6, it is characterized in that, if effective input signal source of the described first Low Voltage Differential Signal generation module and/or the second differential signal generation module is a plurality of, and when the input signal source that the user selects only was in described a plurality of effective input signal source one or several, described control module also comprised:
The 3rd steering order output module is used to export control command and controls one or several input signal source that the described first Low Voltage Differential Signal generation module and/or the second Low Voltage Differential Signal generation module only choose described user and be converted to Low Voltage Differential Signal.
9. device according to claim 1 is characterized in that, the described first Low Voltage Differential Signal generation module comprises:
The screen display reminding module is used for when the described first and second Low Voltage Differential Signal modules are not all exported Low Voltage Differential Signal, output can be on described LCDs the prompts displayed content.
10. 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 described Low Voltage Differential Signal switch module at described first and second Low Voltage Differential Signals, makes described LCDs be in the blank screen state.
11. a display packing is used for showing on LCDs, it is characterized in that, comprising:
The narrow band signal of input is converted to first Low Voltage Differential Signal, and the broadband signal of input is converted to second Low Voltage Differential Signal;
Determine the Low Voltage Differential Signal that finally will export LCDs to, and the output control commands corresponding;
According to described control command, determine that with described the Low Voltage Differential Signal that finally will export exports described LCDs to.
12. method according to claim 11 is characterized in that, described narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal; Described broadband signal comprises: digital audio/video interface DP signal.
13. according to claim 11 or 12 described methods, it is characterized in that, the narrow band signal of described input be converted to described first Low Voltage Differential Signal by a convergent-divergent control module.
14. according to claim 11 or 12 described methods, it is characterized in that, be converted to described second Low Voltage Differential Signal after the broadband signal decoding of mode by direct driving with described input.
15. method according to claim 11 is characterized in that, if there is not the signal source input, then exports indicative displaying contents on described LCDs.
16. method according to claim 11 is characterized in that, selects to export the Low Voltage Differential Signal that finally will export by the Low Voltage Differential Signal switch module and exports described LCDs to.
17. method according to claim 11 is characterized in that, is transferred between the transfer period of described Low Voltage Differential Signal switch module at described first and second Low Voltage Differential Signals, makes described LCDs be in the blank screen state.
18. method according to claim 11 is characterized in that, the described Low Voltage Differential Signal of determining 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, select effective input signal source of desiring on LCDs, to export for the user;
According to user's selection, the control of output control command only will export described LCDs to by the Low Voltage Differential Signal that the described input signal source of choosing is changed out.
19. method according to claim 18 is characterized in that, in the described controlled step, also comprises: according to user's selection, the output control command stops unchecked input signal source is converted to Low Voltage Differential Signal.
20. a computing machine comprises: LCD and main frame is characterized in that described LCD comprises:
The first Low Voltage Differential Signal module is used for the narrow band signal of input is converted to first Low Voltage Differential Signal;
The second Low Voltage Differential Signal module is used for the broadband signal of input is converted to second Low Voltage Differential Signal;
Control module is connected with the described second Low Voltage Differential Signal module with the described first Low Voltage Differential Signal module, is used to determine the Low Voltage Differential Signal that finally will export described LCDs to, and the output control commands corresponding;
The Low Voltage Differential Signal switch module is used for the control command according to described control module output, exports the described Low Voltage Differential Signal that finally will export to described LCDs.
21. computing machine according to claim 20 is characterized in that, described narrow band signal comprises: Video Graphics Array VGA signal, digital visual interface DVI signal and/or HDMI HDMI signal; Described broadband signal comprises: digital audio/video interface DP signal.
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| CN2008101020223A CN101533618B (en) | 2008-03-14 | 2008-03-14 | Display device, display method and computer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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