CN102855108A - Display control device - Google Patents
Display control device Download PDFInfo
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- CN102855108A CN102855108A CN2011101878537A CN201110187853A CN102855108A CN 102855108 A CN102855108 A CN 102855108A CN 2011101878537 A CN2011101878537 A CN 2011101878537A CN 201110187853 A CN201110187853 A CN 201110187853A CN 102855108 A CN102855108 A CN 102855108A
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Abstract
The invention discloses a display control device by which a computer system can control one or more display devices. The display device comprises a processing unit, a storage unit, a connection module and a video control unit, wherein the storage unit records display control data produced by the processing unit; the connection module is connected with the display device, transmits video data generated when a computer system reads the display control data to the display device; and the video control unit is coupled with the computer system, the connection module and the processing unit, is controlled by the processing unit to select the display device connected with the connection module and outputs the video data produced by the computer system to the selected display device through the connection module. Therefore, by the display control device, the computer system can communicate with a plurality of display devices with different specifications.
Description
Technical field
The present invention relates to a kind of control device, and be particularly related to the display control unit of the display capabilities of control display device.
Background technology
In the now epoch that development in science and technology is maked rapid progress, the Managed Solution of various computer systems is developed in market just energetically.For example present existing video distributor (Video Splitter) or video matrix (Video Matrix) are used for confession one or multi-section computer system and are connected with one or multi-section video-unit.Take video distributor as example, it has connectivity port (Port) and can be connected with a computer system, and has video interface connectivity port, can be connected to simultaneously one or more output unit, for example video display devices.And the user can select the output unit that connects via video distributor, for computer system the output unit that is selected is controlled.Yet, the output unit size or the specification that are connected in simultaneously video distributor may be different, when video distributor is selected any output unit with the information of output computer system, may need to consider the type of exporting for the output unit adjustment information of different size.
Summary of the invention
The object of the invention is to provides a kind of display control unit for solving the problems of the technologies described above.
The invention provides a kind of display control unit, one or more comprises the display device of Identification display data to be used for supplying at least one computer system control.Display control unit comprises processing unit, storage unit, link block and video control unit.Processing unit produces the demonstration control data of the display capabilities that is used for the control display device.Record the demonstration control data that processing unit produces in the storage unit, for computer system reads.Link block is used for connecting described display device, and the transmission computer system reads shows that the video data of control data and then generation is to display device.Video control unit then couples computer system, link block and processing unit, and video control unit is accepted the control of processing unit and the video data that computer system produces is outputed to the display device demonstration via link block.
According to above-mentioned, the display control unit that the embodiment of the invention provides can be linked up for computer system and the display device that is connected on the display control unit, and make computer system produce video data according to the demonstration control data corresponding to display device, to output to the display device that is connected by display control unit.
Description of drawings
Fig. 1 is the block diagram of a kind of display control unit embodiment provided by the invention;
Fig. 2 is the block diagram of another kind of display control unit embodiment provided by the invention;
Fig. 3 is the again block diagram of another kind of display control unit embodiment provided by the invention;
Fig. 4 is the configuration diagram of a kind of display control unit embodiment provided by the invention.
Wherein, description of reference numerals is as follows:
10,10a, 10b: display control unit; 100: link block;
102: show linkage unit; 104: video control unit;
106: switch unit; 108: processing unit;
110: storage unit; 112: operation interface;
114: the main frame linkage unit; 12: computer system;
14: display device; 40: display control unit;
400: link block; 402: show linkage unit;
404: the screen connecting line; 406: the main frame linkage unit;
408: the main frame connecting line; 410: power switch;
412: operation push-button; 42: host computer;
44: screen.
Embodiment
Display control unit embodiment
Please refer to the block diagram of a kind of display control unit embodiment shown in Figure 1.The display control unit 10 of present embodiment comprises link block 100, video control unit 104, switch unit 106, processing unit 108, storage unit 110, operation interface 112 and main frame linkage unit 114.Wherein, link block 100 comprises that also one or more shows linkage unit 102.The display control unit 10 of present embodiment can be video distributor (Video Splitter), be used for connecting at least one computer system 12 and one or more display device 14, can control all video output devices (being the display device 14 in this example) that connected with this via single master control set (being the computer system 12 in this example).Described computer system 12 can be the equipment such as desk computer host, servomechanism, notebook computer, video player (such as DVD or VCD), and display device 14 then can be the image output equipment such as cathode-ray tube (CRT) (CRT) screen, LCD screen or projector.In the present embodiment, link block 100 can be electrically connected described one or more display device 14, video control unit 104 and switch unit 106.Video control unit 104, switch unit 106, storage unit 110 and operation interface 112 are connected to processing unit 108.Wherein, video control unit 104 and storage unit 110 also couple respectively computer system 12.
One or more of link block 100 shows that linkage unit 102 can be connected with display device 14 one to one, and can be according to 104 other controls of processing unit 108 and video control unit, and between a plurality of demonstration linkage units 102, choose and each display device 14 that shows that linkage unit 102 is connected.Link block 100 in the present embodiment can be Video Graphics Array (VGA) interface module, digital video interface (DVI) module, high-resolution multimedia interface (HDMI) module or display port (Display Port, DP) interface module.Each shows that linkage unit 102 can be the connection slot (socket) corresponding to described interface module, is used for corresponding connection and has the attachment plug of identical interface and be electrically connected on display device 14.
Be used for the output video data to being connected to the display device 14 that shows linkage unit 102 with respect to video control unit 104,108 control of processing unit switch unit 106 is to read respectively the affiliated Identification display data of each display device 14.Processing unit 108 can be central processing unit, microcontroller or embedded controller etc., and switch unit 106 can be on-off circuit.Wherein, the means that switch unit 106 is connected with link block 100, can make each the demonstration linkage unit 102 in the link block 100 all be electrically connected on switch unit by bus, as master control person (master), read respectively the Identification display data of each display device 14 with processing unit 108 and switch unit 106.
What specify is, the content of the Identification display data of each display device 14 may be different, when computer system 12 produces video data, must do different layouts to video data content according to the Identification display data of display device 14, to avoid the normally data exported of Display control computer system 12 of display device 14.Described Identification display data can comprise the contents such as manufacturer's data, display parameter data, color parameter data or renewal frequency supplemental characteristic of display device 14 usually, particular instantiation is as expanding Identification display data (Extension Display Identification Data, EDID).Expand the Identification display data and usually be stored in the storage element (Fig. 1 is not shown) that is arranged at display device 14, for example in the erasable programmable read only memory of electronic type (EEPROM).The display parameter data that expands the Identification display data can comprise the maximum visual width of display device 14 and height, the resolution size of supporting.The color parameter data can comprise the Gamma value of described display device 14 correspondences and the color system that is suitable for (such as being RGB or YPbPr) etc.The renewal frequency supplemental characteristic then can comprise the data such as screen updates frequency, horizontal synchronization (Horizontal Sync) frequency and vertical synchronization (Vertical Sync) frequency.Part expands the Identification display data also can further comprise the data such as the audio frequency parameter data (such as display device 14 exportable audio track numbers) of display device 14 or stereo display supplemental characteristic (Stereo Display) (such as the demonstration of recording described display device 14 and whether support stereopsis).Above-mentioned parameters data all relate to the display capabilities of corresponding display device 14.
Because the specification of different display device 14 or the project of support may be different, if the video data of computer system 12 outputs does not produce according to defined content of parameter in the Identification display data of display device 14, may cause in display device 14 and show mistake, for example, the video data that maximum resolution is higher outputs to the lower display device of maximum resolution 14, may be so that the lower display device 14 of resolution can't demonstrate image, if otherwise the video data that maximum resolution is lower outputs to the higher display device of resolution 14, then may be so that image frame only be presented at the part in the viewing area of display device 14, fail to contain fully the viewing area of display device 14.
In the present embodiment, processing unit 108 switches the Identification display data that read different display device 14 by control switch unit 106 between demonstration linkage unit 102, and can be further from Identification display data corresponding to a plurality of different display device 14 difference, the content of parameter that extracts more than one Identification display data is integrated, at last simulation (emulate) goes out one group and shows the control data, is used when producing video data to offer computer system 12.Show the control data such as being chosen at the highest image renewal frequency parameter of resolution the most general among a plurality of display device 14 and selecting frequency etc., consisting of.Thus, described demonstration control data also can have the effect of the display capabilities of control display device 14, and by computer system 12 obtain show the control data after, with the exportable video data of parameter generating that comprises in the described demonstration control data.
In other embodiment, processing unit 108 also can adopt chooses and copies (copy) wherein one group of means as demonstration control data from the many groups Identification display data that read, for example choose the minimum Identification display data of resolution of supporting and control data as showing.Can guarantee smoothly output video data of all display device 14 that are connected in demonstration linkage unit 102, some display device 14 of unlikely generation can't show the situation of data.
Described demonstration control data, no matter be to extract a plurality of Identification display data and simulate out, or selecting one directly copies, it is temporary all can be sent to storage unit 110 by processing unit 108.Storage unit 110 can be volatile memory or nonvolatile memory, such as being the various storeies such as random access memory (RAM), the erasable programmable read only memory of electronic type or flash memory (Flash Memory).Described storage unit 110 can be embedded in processing unit 108, also can be arranged in 108 minutes with processing unit.
The ground of being worth mentioning; if main frame linkage unit 114 is for supporting high frequency range digital content protection (High-bandwidth Digital Content Protection; HDCP) digital video interface unit or the high-resolution multimedia interface unit of mechanism; signalling channel between computer system 12 and the main frame linkage unit 114 also can be for the expansion Identification display data of high frequency range digital content protection data transmission with reading displayed device 14 except the expansion Identification display data that can be used for reading cells 110 records.In the case; provide simultaneously expansion Identification display data for fear of storage unit 110 and display device 14; the mistake that causes computer system 12, processing unit 108 can temporarily interrupt high frequency range digital content protection data transfer by the control line CS that is connected to main frame linkage unit 114.In other words, processing unit 108 is when judging the demonstration control data that computer system 12 reading cells 110 record, but the binding of the 114 temporary transient interruptions of main control system linkage unit and video control unit 104 is so that the signalling channel between computer system 12 and the main frame linkage unit 114 is exclusively used in the expansion Identification display data that reading cells 110 records.After machine to be calculated system 12 reads the expansion Identification display data that record in the storage unit 110, recover again high frequency range digital content protection data transfer.
In other embodiments, operation interface 112 can be the infrared communication interface, for example is the infrared receiver module, produces operational order for receiving infrared-ray signal.The user can utilize the far-end control device such as telepilot to send instruction to display control unit 10, also can make display control unit 10 obtain corresponding Identification display data according to the indicated display device 14 of operational order choice for use person.
In the middle of another embodiment, operation interface 112 is except being used for producing the operational order of specifying display device 14, also can indicate processing unit 108 to adjust or revise the demonstration that is temporary in the storage unit 110 and control data, change video data with this and output to display device 14 shown results out.
Take screen display (OSD) interface as operation interface 112 as example, the menu that the user can utilize the screen display interface to provide, the collocation telepilot is chosen the project in the menu, and the parameter of change setting, for example choose different display device 14, the original resolution of setting of change, choose different audio track numbers, change level or vertical synchronizing frequency, start or close three-dimensional display function, or start or close network connectivity function etc.After processing unit 108 receives the operational order of above-mentioned one or more change demonstration control data, the parameter of the demonstration control data of corresponding amendment record in storage unit 110.Thus, the demonstration control data of upgrading in computer system 12 reading cells 110, and generation is corresponding to the video image of user's demand.
Another embodiment of display control unit
Please consult again the block diagram of the embodiment of another display control unit shown in Figure 2.The described display control unit of present embodiment also can be video distributor.Compared to the embodiment of display control unit shown in Figure 1 10, the display control unit 10a in this example does not need between link block 100 and processing unit 108 switch unit 106 to be set.
In the present embodiment, storage unit 110 stores in advance one group and shows the control data, and therefore, computer system 12 is via the direct reading cells 110 stored data and produce video data of main frame linkage unit 114.Processing unit 108 receives the operational order that user's operating operation interface 112 produces, and control display control module 104 is according to the specified display device 14 of operational order, switch to corresponding demonstration linkage unit 102, the video data that the demonstration control data that store in advance with the output basis produce is to the display device 14 that is selected.
In addition, processing unit 108 also can receive the operational order that shows the control data content for adjusting, and according to the indicated adjustment content of operational order, the corresponding content of parameter of revising the demonstration control data of record in the storage unit 110 makes video data correctly be presented at the display device 14 that is selected according to user's demand with this.
In the present embodiment, the part that other are identical with embodiment shown in Figure 1 or can replace easily please refer to the corresponding embodiment content of Fig. 1, and present embodiment namely no longer repeats.
An again embodiment of display control unit
Figure 3 shows that the block diagram of the embodiment of another display control unit provided by the invention.With embodiment difference shown in Figure 1, be that the display control unit 10b in the present embodiment has comprised a plurality of storage unit 110 and a plurality of main frame linkage unit 114, storage unit 110 is connected in main frame linkage unit 114 one to one, and main frame linkage unit 114 also is connected in a plurality of computer systems 12 one to one.The described display control unit 10b of present embodiment can be a video matrix (Video Matrix).
Thus, display control unit 10b not only can transmit image to a plurality of display device 14 for single computer system 12, also can send a plurality of display device 14 to for a plurality of computer system 12 images.
In the present embodiment, other parts identical with embodiment shown in Figure 1 or replaceable also please refer to the corresponding embodiment content of Fig. 1, and present embodiment namely no longer repeats.
It is worth mentioning that a plurality of main frame linkage units 114 as shown in Figure 3 and a plurality of computer systems 12 are connected the framework that is connected one to one respectively with storage unit, also applicable among the embodiment as shown in Figure 2.Among the embodiment shown in Figure 2, if a plurality of storage unit 110 are arranged, each storage unit 110 all can store in advance one group and show the control data, reads respectively in order to corresponding computer system 12, and produces video data thus.
Please consult again Fig. 4, Figure 4 shows that the synoptic diagram of the described display control unit of the various embodiments described above of the present invention.As shown in Figure 4, display control unit 40 comprises link block 400, described link block 402 also comprises a plurality of demonstration linkage units 402 that are arranged on surface of shell, each shows that linkage unit 402 can be one and connects slot, is used for connecting one to one a plurality of screens 44 via the screen connecting line 404 with attachment plug.
Except being used for connecting the demonstration linkage unit 102 of display device 14, also comprise one or more main frame linkage unit 406, be used for being connected to host computer 42 (arriving the described computer system 12 of Fig. 3 corresponding to Fig. 1) by main frame connecting line 408.
In addition, display control unit 40 also can comprise power switch 410, and a plurality of button 412 (corresponding to the operation interface 112 of Fig. 1 to Fig. 3).Described a plurality of operation push-button 412 corresponds to respectively a plurality of demonstration linkage units 402 one to one, and the user can directly press any operation push-button 412 wherein to specify the specific screens 44 that will choose.Described button 412 is also replaceable to be button, change-over switch, sequence communication interface (such as RS232), screen display interface or infrared communication interface.
The possible effect of embodiment
According to the embodiment of the invention, above-mentioned display control unit can be used for making at least one computer system to be connected with one or more display device, and can make computer system according to the demonstration control data of processing unit institute analyzing and processing, and produce the video data that is suitable for described display device, to output to described one or more display device that is connected by display control unit.Further, display control unit also can be for a plurality of computer systems difference control linkages one or more display device on display control unit, can not only reach an input (computer system) to the effect of an output (display device), also can reach an input to many outputs, and many inputs allow the user can carry out expediently complicated video control to the effect of many outputs.
In addition, display control unit can utilize to be arranged on and show that linkage unit switches different display device in turn from switch unit between processing unit, make processing unit can read the stored Identification display data of a plurality of display device, and and then integrate most group Identification display data and show the control data to simulate, or directly choose the corresponding Identification display data of one of them display device as showing the control data.Display control unit also can utilize volatibility or non-volatile storage unit to come the handled demonstration control in recording processing unit data, or data are controlled in one group of demonstration that record stores in advance.Combination between the said elements is so that computer system can be flexibly according to showing that the control data produce the video data that is suitable for described display device.
Display control unit also can by operation interface for the user directly choose be connected in display control unit a plurality of display device one of them, exempt the user additionally installs the control software in computer system inconvenience.Further, display control unit also can receive the demonstration control data of instruction to be recorded in the modifier by operation interface, with this video data that produces the demand that more meets different display device, the video data that allows computer system produce can correctly show in each display device that connects.
The above only is embodiments of the invention, and it is not be used to limiting to claim of the present invention.Therefore, all have in that identical invention spirit is lower do relevant any modification of the present invention or change, all must be included in the category of institute of the present invention wish protection.
Claims (13)
1. a display control unit is used for for one or more display device of at least one computer system control, and described display device comprises the Identification display data, it is characterized in that described control device comprises:
Processing unit produces demonstration control data, and this shows the display capabilities of the described display device of control Data Control;
At least one storage unit records these demonstration control data of this processing unit generation for this computer system reads;
Link block is used for connecting described display device, and transmits this computer system reads and should demonstrations control the video data of data and then generation and arrive described display device; And
Video control unit, couple this computer system, this link block and this processing unit, this video control unit is accepted the control of this processing unit and is chosen the described display device that this link block connects, and this video data that this computer system produces is outputed to this display device that is connected in this link block via this link block.
2. display control unit according to claim 1 is characterized in that, this link block comprises a plurality of demonstration linkage units, and described demonstration linkage unit is used for being connected one to one with described display device.
3. display control unit according to claim 2, it is characterized in that, this processing unit is coupled to this link block, and reads and process these Identification display data of the described display device that is connected in this link block, to produce these demonstration control data and to be recorded in this storage unit.
4. display control unit according to claim 3 is characterized in that, also comprises:
Switch unit is connected between this processing unit and this link block, and this this switch unit is accepted the control of this processing unit and switched between described display device, reads these Identification display data of the described display device that switches to for this processing unit.
5. display control unit according to claim 3 is characterized in that, this processing unit is chosen the described Identification display data that read, and one of them is these demonstration control data.
6. display control unit according to claim 3 is characterized in that, this processing unit extracts and integrate described Identification display data, to produce this demonstration control data.
7. display control unit according to claim 1 and 2 is characterized in that, this link block is Video Graphics Array interface module, digital video interface module, high-resolution multimedia interface module or display port interface module.
8. display control unit according to claim 1 is characterized in that, these demonstration control data comprise display parameter data, color parameter data, renewal frequency supplemental characteristic, audio frequency parameter data or stereo display supplemental characteristic.
9. according to claim 1 or 8 described display control units, it is characterized in that, also comprise:
Operation interface is connected in this processing unit, is used for accepting operation and the generation operational order, and transmits this operational order to this processing unit;
Wherein, this processing unit is controlled this switch unit according to this operational order and is switched, or the content of these demonstration control data of control change.
10. display control unit according to claim 9 is characterized in that, this operation interface is change-over switch, button, button, sequence communication interface, screen display interface or infrared communication interface.
11. display control unit according to claim 1 is characterized in that, this display control unit also comprises:
The main frame linkage unit is connected between this storage unit, this video control unit, and is used for connecting this computer system, reads these demonstration control data that this storage unit records for this computer system by this main frame linkage unit.
12. display control unit according to claim 11; it is characterized in that; this main frame linkage unit is for supporting digital video interface unit or the high-resolution multimedia interface unit of high frequency range digital content protection data; when data are controlled in this demonstration that this processing unit records in this storage unit of this computer system reads, control this main frame linkage unit and temporarily interrupt high-frequency digital content protecting data transfer.
13. display control unit according to claim 1 is characterized in that, this display control unit also comprises:
A plurality of main frame linkage units, described main frame linkage unit is connected in this video control unit, is used for being connected between a plurality of described computer systems and a plurality of described storage unit one to one;
Wherein, each described computer system reads these demonstration control data of this corresponding unit records via this main frame linkage unit of correspondence.
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| CN201110187853.7A CN102855108B (en) | 2011-06-29 | 2011-06-29 | Display control unit |
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| CN201110187853.7A CN102855108B (en) | 2011-06-29 | 2011-06-29 | Display control unit |
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| CN102855108B CN102855108B (en) | 2015-08-19 |
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| CN104284113A (en) * | 2013-07-01 | 2015-01-14 | 联发科技股份有限公司 | Video data displaying system and video data displaying method |
| CN113132783A (en) * | 2021-04-21 | 2021-07-16 | 湛辉来 | Multi-machine shared multi-screen display control system and method |
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