CN102854717A - Projector, electronic equipment and using methods on projector and electronic equipment - Google Patents
Projector, electronic equipment and using methods on projector and electronic equipment Download PDFInfo
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- CN102854717A CN102854717A CN2012102953900A CN201210295390A CN102854717A CN 102854717 A CN102854717 A CN 102854717A CN 2012102953900 A CN2012102953900 A CN 2012102953900A CN 201210295390 A CN201210295390 A CN 201210295390A CN 102854717 A CN102854717 A CN 102854717A
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Abstract
The embodiment of the invention provides a projector, electronic equipment and using methods of the projector and electronic equipment. The projector comprises a transmission unit, a main control unit and a projection unit, wherein the transmission unit is suitable for establishing wireless connection with the external electronic equipment; the main control unit is suitable for controlling the transmission unit to receive the mirror image of a display screen of the external electronic equipment; and the projection unit is suitable for projecting the received mirror image. Through the technical scheme provided by the embodiment of the invention, the content on the display screen of the electronic equipment can be conveniently and synchronously displayed through the projector; and without a connection wire, the cost of using and maintaining the projector is reduced.
Description
Technical field
The present invention relates in general to projector, and particularly, the method that relates to projector, the electronic equipment that is connected with projector and use at projector and electronic equipment respectively.
Background technology
There has been at present increasing people to use smart mobile phone, the electronic equipments such as panel computer and computing machine.These equipment have fast networking speed mostly, and large storage area also can be from the various information of for example the Internet download.But because the display screen of these electronic equipments is less than normal, when very inconvenient when friend/colleague shares the content that shows screen display on every side.On the other hand, if when showing the content on the display screen of electronic equipment by traditional projection display apparatus, need to be by Wireline and other these electronic equipments (for example, smart machines, such as computer/mobile phone/net book etc.) be connected, to realize signal transmission projection.Owing to need in ground and body of wall, bury in advance connecting line, existing connecting line cost height and carry the drawbacks such as inconvenient.And when follow-up maintenance and change layout, also bother very much.
Some projector of today has the Wifi function, but its use has limitation, only limits to online.Be connected other smart machines when connecting, also need to connect by connecting line, and different from the connecting line of different intelligent equipment, use USB line/AV line/VGA line/HDMI line/Apple industrial siding etc. such as needs.These connecting lines are of a great variety and carry inconvenience.Simultaneously, for minitype projection machine, miscellaneous connecting line has also brought the problem of interface compatibility.
Summary of the invention
The present invention is intended to solve at least a portion problem that the content on the display screen that above-mentioned use projector shows electronic equipment is brought.
According to an aspect of the present invention, provide a kind of projector, having comprised: transmission unit is suitable for setting up wireless connections with external electronic device; Main control unit is suitable for controlling the mirror image that described transmission unit receives the display screen of described external electronic device; And projecting cell, be suitable for the mirror image that receives is carried out projection.
According to a further aspect in the invention, provide a kind of electronic equipment, having comprised: display screen; Linkage unit is suitable for setting up wireless connections with projector; The mirror image acquiring unit is suitable for obtaining the mirror image of described display screen, sends to carry out projection by described linkage unit to projector; And processing unit, be suitable for controlling described linkage unit and described mirror image acquiring unit.
According to a third aspect of the invention we, provide a kind of method of using at projector, having comprised: set up wireless connections with external electronic device; Receive the mirror image of the display screen of described external electronic device; And the mirror image that receives carried out projection.
According to a forth aspect of the invention, provide a kind of method of using at electronic equipment, comprised with projector and set up wireless connections; Obtain the mirror image of the display screen of described electronic equipment, send to carry out projection to projector.
By above technical scheme, can come content on the display screen of simultaneous display electronic equipment (for example, the smart machine such as computer/mobile phone/net book) easily by projector.And owing to not needing connecting line, reduced the cost of projector operation and maintenance.
Description of drawings
By reference to the accompanying drawings embodiments of the present invention are described in detail, can understand better the present invention, wherein:
Fig. 1 shows the according to an embodiment of the invention schematic diagram of wireless display;
Fig. 2 shows the according to an embodiment of the invention schematic block diagram of projector;
Fig. 3 shows the according to an embodiment of the invention schematic block diagram of electronic equipment;
Fig. 4 shows according to an embodiment of the invention the process flow diagram of mirror image that comes the display screen of projection electronic equipment with projector;
Fig. 5 shows the according to an embodiment of the invention process flow diagram of projector to connect from equipment mode;
Fig. 6 shows the schematic diagram that mirror image according to an embodiment of the invention obtains flow process;
Fig. 7 shows according to embodiments of the invention, the process flow diagram of the aftertreatment flow process of electronic equipment end after sending mirror image; And
Fig. 8 shows the according to an embodiment of the invention design sketch of wireless display.
Embodiment
To a preferred embodiment of the present invention will be described in detail, having omitted in the description process is unnecessary details and function for the present invention with reference to the accompanying drawings, obscures to prevent that the understanding of the present invention from causing.In whole accompanying drawings, use identical invoking marks for similar or corresponding element.
As mentioned above, owing to needing by connecting line electronic equipment to be connected with projector in the prior art, exist the connecting line cost high and carry inconvenient problem so that show content on the display screen of electronic equipment with projector.
In order to address this problem, at least some embodiment of the present invention have proposed a kind of projector.This projector comprise with external electronic device (for example, electronic equipment or the smart machines such as computer/mobile phone/net book) set up the transmission unit of wireless connections, be used for the control transmission unit and receive the main control unit of mirror image of display screen of external electronic device and the projecting cell that the mirror image that receives is carried out projection.
Projector can also comprise heat-sink unit, so that can reduce by heat radiation the working temperature of projector (particularly projecting cell), and to prolong the life-span of projector.Projector also can comprise driving circuit, and driving circuit can provide driving for main control unit and projector.Main control unit can be the CPU of projector, also can be any general or special purpose treatment circuit that is arranged in the projector.
At least some embodiment of the present invention have also proposed a kind of electronic equipment.This electronic equipment comprises display screen, be suitable for setting up with projector the linkage unit of wireless connections, be suitable for obtaining the mirror image of the display screen of electronic equipment, and send to carry out the mirror image acquiring unit of projection to projector by linkage unit, and the processing unit that is suitable for control linkage unit and mirror image acquiring unit.
Electronic equipment can also comprise the storer of employed data and program during the processing for store electrons equipment, and the power supply that power is provided for electronic equipment.According to specific circumstances, storer can be the storer of any type, for example RAM, ROM, hard disk etc.Power supply can be that battery, adapter or other can provide for electronic equipment the power circuit of normal operation power demand.Similarly, the processing unit of electronic equipment can be the CPU of electronic equipment or be arranged in any general or special purpose treatment circuit in the electronic circuit.
At least some embodiment of the present invention have also proposed a kind of method of using at projector.The method comprises with external electronic device sets up wireless connections; Receive the mirror image of the display screen of external electronic device; And the mirror image that receives carried out projection.
At least some embodiment of the present invention have also proposed a kind of method of using at electronic equipment.The method comprises with projector sets up wireless connections; Obtain the mirror image of the display screen of described electronic equipment, send to carry out projection to projector.
Term among the present invention " mirror image " refer on the display screen with electronic equipment demonstration synchronously or the image of near-synchronous.
Can realize coming content on the display screen of simultaneous display electronic equipment easily by projector by above technical scheme, and owing to not needing connecting line, reduce the cost of projector operation and maintenance.
Fig. 1 shows the according to an embodiment of the invention schematic diagram of wireless display.As shown in Figure 1.According to projector of the present invention can with the electronic equipment of a plurality of outsides, for example mobile phone, flat computer and notebook carry out wireless connections, and the displaying contents on these equipment is carried out projection.Although it will be appreciated by those skilled in the art that among Fig. 1 to connect projector and electronic equipment with the WiFi agreement, yet also can use other agreements that can set up WLAN (wireless local area network), for example any among bluetooth, infrared, the TransferJet.In addition, although the electronic equipment shown in Fig. 1 is removable or portable electronic equipment, however the electronic equipment that the present invention also can be applied to fix, for example, desktop computer etc.
The simplified block diagram of the circuit structure of the projector shown in Fig. 1 has been shown among Fig. 2.
Projector can comprise main control unit 210, transmission unit 220 and projecting cell 260.Main control unit 210 can the controlling projection instrument in the work of each assembly.Projector is by transmission unit 220 and external unit or network connection.The signal that receives via transmission unit 220 can be projected on the projection screen (not shown) by projecting cell 260.In an example of the present invention, projecting cell 260 can comprise LCoS (liquid crystal on silicon) ray machine.The LCoS ray machine adopts led light source, and produces red/Huang/green three coloured light and carry out projection.Yet the invention is not restricted to this, in other embodiments of the invention, also can adopt the ray machine of other types, such as DLP (digital light processing) ray machine, perhaps adopt the ray machine of LASER Light Source etc.
Projector can also comprise storer 230, driving circuit 240, power supply unit 250, heat-sink unit 270, video interface 280 etc.Storer 230 can be used to store all programs and the data of main control unit 210, also can be used for the data that storage transmission unit 220 received or be about to transmission.Driving circuit 240 comprises respectively LCoS driving circuit and led drive circuit (not shown), is connected respectively to main control unit 210 and projecting cell 260 and provides driving for it.Power supply unit 250 can comprise accumulator and adapter (not shown).Adapter can adopt any power interface (for example, USB interface), and is connected with external power source directly or indirectly.Accumulator can directly be each assembly power supply of projector, and can charge via adapter.Heat-sink unit 270 can comprise fan and heat radiator etc., can reduce by heat radiation the working temperature of projector (the particularly ray machine of projecting cell 260), with the life-span that prolongs projector and the normal operation that guarantees projector.Video interface 280 can provide various cable video interfaces for projector, to be connected with external unit by wired mode, provides the HD video picture.
Alternatively, projector can also comprise unshowned other assemblies among Fig. 2, for example various structures on shell and the shell.
When projector was started shooting, transmission unit 220 can detect whether there is available WLAN (wireless local area network) (WLAN).If exist, request is connected to this WLAN (wireless local area network).Otherwise transmission unit 220 is set up new WLAN (wireless local area network).
When the electronic equipment with the outside connects, if electronic equipment is not connected to other wireless networks, and can connect the WLAN (wireless local area network) (being labeled as WLAN (wireless local area network) A) at projector place (or create), then this electronic equipment can be directly connected to WLAN (wireless local area network) A.Yet, if electronic equipment has been connected to existing wireless network (schematically being labeled as wireless network B), then electronic equipment can be set to from equipment mode by projector, and network identity (for example, network title etc.) and/or the access code of wireless network B are set to projector.The main control unit 210 control transmission units 220 of projector switch under equipment mode according to the setting of electronic equipment and work, and search out wireless network B according to set network identity and/or access code, and B connects with wireless network.
After connecting with wireless network B, main control equipment 210 can arrange according to the IP address assignment principle of wireless network B the IP address of projector.This IP address can pre-establish, for example, wireless network B can specify in advance certain IP address field or even certain concrete IP address be used as the IP address of projector, perhaps can be Random assignment.Then, transmission unit 220 can use set IP address to broadcast to each equipment among the wireless network B, with the IP address that to indicate this IP address be projector.Thereby smart mobile phone can by the IP address that receives broadcast and obtain projector from broadcast, be set up point to point connect with projector.
As alternative, for example in wireless network B, specified concrete IP address as the IP address of projector, and should specify has been in the situation known to each equipment among the wireless network B, to need not the IP address of pointing out that in broadcast this IP address is projector.Electronic equipment can go out to exist available projector among the wireless network B by automatic decision, and sets up point to point connect with this projector after the broadcast that receives from the IP address of projector.Even in some specific examples, electronic equipment can be according to the specified IP address that is used for projector, with regular time the interval in wireless network B, seek projector (for example, by the mode of ping), initiatively set up point to point connect with this.
After connecting with electronic equipment, the transmission unit 220 of projector receives the mirror image of the display screen of this electronic equipment from electronic equipment.Main control unit 210 is converted to RGB 888 signals that driving circuit 240 can identification with this mirror image, and sends to projecting cell 260, and the light engine by projecting cell 260 is projected on the projection screen.In projection process, the focusing structure that can regulate projecting cell 260 obtains clearly picture.
When projection finishes, can stop projection by main control unit 210 controlling projection unit 260, perhaps control transmission unit 220 disconnect with wireless network B (or electronic equipment) be connected to stop projection.
In above description, be connected as example with an electronic equipment with projector and describe.Yet the invention is not restricted to this, in other embodiments of the invention, projector can be connected with a plurality of electronic equipments simultaneously (example is situation as shown in Figure 1).In the case, can select the mirror image (being equal to the above embodiment that describes in conjunction with Fig. 2) of the display screen of a certain equipment of same time projection, perhaps by the simultaneously projection of form of split screen or picture-in-picture a plurality of/mirror image of the display screen of all devices.
Fig. 3 shows the according to an embodiment of the invention schematic block diagram of the structure of electronic equipment.This electronic equipment can be smart mobile phone, flat computer, notebook, PDA or other equipment with certain computing power and display capabilities.In the situation that electronic equipment is smart mobile phone.This smart mobile phone can adopt various operating systems, for example Android system, blackberry, blueberry system, iOS system, Windows system, Mac system or other with or be about to the operating system used.
The linkage unit 320 that electronic equipment among Fig. 3 can comprise for the processing unit 310 of each assembly of the display screen 380 that shows the media contents such as image, video, control electronic equipment and be used for connecting with the external unit such as projector and wireless network B or network.When electronic equipment (for example smart mobile phone) need to carry out the demonstration of display screen with projector, processing unit 310 can be by the WLAN (wireless local area network) A of linkage unit 320 search projector places (or set up).If this moment, electronic equipment did not connect with other networks (for example, wireless network B), then processing unit 310 can be directly connected to by linkage unit 320 the WLAN (wireless local area network) A at projector place.If be connected to electronic equipment at this moment for example wireless network B, linkage unit 320 can disconnect and being connected of wireless network B, and connects with WLAN (wireless local area network) A.The destination address of the gateway that then, processing unit 310 can be by linkage unit 320 access WLAN (wireless local area network) A (for example, 192.168.100.1).In an example of the present invention, this access can realize by the form of accessed web page.Setup of attribute unit 350 can be set to from equipment mode by projector, and network identity (for example, network title) and/or the password of its wireless network B that will access are set to projector.Next, processing unit 310 can the control linkage unit 320 disconnects and being connected of WLAN (wireless local area network) A, and is connected to wireless network B.Processing unit 310 can be intercepted broadcast in wireless network B, obtaining the IP address of projector projector of setting after the network identity that arranges according to setup of attribute unit 350 and/or password are connected to wireless network B, set up point to point connect with projector by this IP address of linkage unit 320 usefulness.
As mentioned above, in wireless network B, specified concrete IP address as the IP address of projector, and should specify has been in the situation known to each equipment (for example electronic equipment in this example) among the wireless network B, and projector need not the IP address of pointing out that in broadcasting this IP address is projector.The linkage unit 320 of electronic equipment is after the broadcast that receives from the IP address of projector, and processing unit 310 can go out to exist available projector among the wireless network B by automatic decision, and sets up point to point connect by linkage unit 320 and this projector.Even in examples more of the present invention, electronic equipment can be according to the specified IP address that is used for projector, with regular time the interval in wireless network B, seek projector, initiatively set up point to point connect with this.
By above connected mode, electronic equipment does not affect existing network connection (for example, above-mentioned and wireless network B are connected) or new network connection when carrying out the projection of wireless connections mode with projector, and for example new internet connects.
After setting up point to point connect with projector, electronic equipment obtains and sends to projector the mirror image of the demonstration on the display screen 380 of electronic equipment.The below will be elaborated to this.In an example of the present invention, the mirror image acquiring unit 330 of electronic equipment can be accessed the FrameBuffer buffer memory of the operating system (not shown) of electronic equipment, obtaining soon the lower piece image in the demonstration screen display of electronic equipment, and obtain the resolution of this image.It will be understood to those of skill in the art that in the operating system of other types, the mirror image acquiring unit 330 of electronic equipment also can from storage unit like the FrameBuffer cache class obtain the lower piece image that will show.The resolution that processing unit 310 can be determined this image is required resolution (for example 800*600) whether.If resolution is 800*600, can be to be suitable for the form (for example PNG form) that projector is processed with compression of images by compression unit 340 then, send (for example, sending with ICP/IP protocol) via linkage unit 320 to projector.If resolution is not 800*600, for example, suppose it is H*W, then can be set to 800 by the high H of compression unit 340 these images, by formula W=H*600/800 its width is compressed, and being the PNG form with compression of images then, then send to projector.In the situation that compress in the electronic equipment, correspondingly need to the image that has compressed be decompressed in the projector side.This function can realize in the main control unit 210 of projector, perhaps be realized by software or the hardware circuit of special use.
Can with more than the information such as the image that obtains and resolution thereof be stored in the storage unit 360.
It will be appreciated by those skilled in the art that above only is an example obtaining according to an embodiment of the invention the process of mirror image, the invention is not restricted to this.For example, mirror image acquiring unit 330 can carry out the picture signal that direct sectional drawing obtains near-synchronous to the image on the display screen of electronic equipment, rather than obtains from the FrameBuffer buffer memory of operating system.In some embodiments of the invention, mirror image acquiring unit 330 can obtain screenshot capture by the frequency of 30Hz.It should be appreciated by those skilled in the art that the frequency that also can use other.In addition, required resolution can not be 800*600 also, and can be other resolution, such as 1024*768,1280*720 etc., and therefore compresses also correspondingly change of formula.The compressed format of image also can be not limited to the PNG form, and can be any other form that projector can receive and process, such as JPG, JPEG, BMP etc.
Can also comprise counter 370 in the electronic equipment according to an embodiment of the invention.Counter 370 can be counted the time of linkage unit 320 after described projector sends mirror image.After linkage unit 320 receives the affirmation to mirror image from projector, send lower piece image.Also do not receive the confirmation if surpass 50 milliseconds, start counter 370, whenever surpass 50 milliseconds and do not receive the confirmation information, counter 370 can increase progressively 1.If in 1 second, the value of counter 370 is lower than 10, then when beginning next second with counter 370 zero clearings, and again carry out above counting process.If greater than 10, then processing unit 310 prompting user wireless network B are unsuitable for projector to the value of counter 370 in 1 second.Alternatively, counter 370 can start in any stage of mirror image acquisition process, and need not also not receive the confirmation information from projector and just start surpassing 50 milliseconds.In addition, the time interval that increases progressively of counter 370 also can be not limited to 50 seconds, and any value that can get as required other, for example, 100 milliseconds.The threshold value of counter 370 also can be not limited to 10, but can get other any suitable value, such as 5 or 15.
Above when describing according to projector architecture of the present invention about Fig. 2, the operation by the projector side stops projection.Yet in some embodiments of the invention, also can stop projection by the operation of electronic equipment side.For example, can the linkage unit 320 by in the electronic equipment disconnect with projector be connected to stop projection.
Above referring to figs. 2 and 3 describing the according to an embodiment of the invention example of projector and electronic equipment in detail.Yet, it should be appreciated by those skilled in the art that only to show among Fig. 2 and Fig. 3 understanding the helpful assembly of the present invention.Actual projector and the electronic equipment that uses can comprise more or less assembly as required.For example, can not comprise the video interface 280 among Fig. 2, the electronic equipment shown in Fig. 3 can also comprise power supply module or provide audio frequency and/or the assembly of Video processing etc.Perhaps the function of each assembly shown in Fig. 2 and Fig. 3 also can realize in more or less assembly.For example, the function of mirror image acquiring unit 330, compression unit 340 and setup of attribute unit 350 etc. can realize in processing unit 310 among Fig. 3.In addition, the partial function among Fig. 2 and Fig. 3 also can be realized by the form of specialized hardware or software program.
Below with reference to Fig. 4, based on the schematic block diagram of above-mentioned projector and electronic equipment, set forth in the embodiment of the invention flow process of mirror image of coming the display screen of projection electronic equipment with projector.In step S401, projector and electronic equipment are set up wireless connections.When electronic equipment did not access other wireless networks, electronic equipment can come directly to connect with projector by the WLAN (wireless local area network) at access projector place.If the current wireless network (routine wireless network B described above) that has been connected to other of electronic equipment, electronic equipment can connect by the mode shown in Fig. 5 and projector.
Fig. 5 shows according to an embodiment of the invention projector at the process flow diagram that connects under equipment mode.At first, in step S501, the transmission unit 220 in the projector can be set up WLAN (wireless local area network) A.For example, in the situation that use the WiFi agreement, can start to set up WLAN (wireless local area network) A by the WiFi routing mode.In step S502, the processing unit 310 in the electronic equipment can the control linkage unit 320 wireless connections that disconnect with wireless network B, and in step S503, be connected to the WLAN (wireless local area network) A that projector is set up.In step 504, the processing unit 310 in the electronic equipment can control linkage unit 320 access destination IP:192.168.100.1, and this Target IP can be the Target IP of the gateway of WLAN (wireless local area network) A, can present it by the form of webpage the page is set.In step S505, can be set to from equipment (for example, WiFi is from equipment) by setup of attribute unit 350 projector, and network identity and/or the access code of the network (that is, wireless network B) that projector will access are set.Then, in step S506, setup of attribute unit 350 can be preserved and withdraw from this page is set.Afterwards, in step S507, the main control unit 210 in the projector can restart transmission unit 220 so that projector according to the setting of electronic equipment with from equipment mode work.In step S508, the main control unit 210 of projector can be sought corresponding network (that is, wireless network B) according to set network identity and/or access code, and connects with wireless network B by transmission unit 220.In step S509, the main control unit 210 of projector can arrange according to the IP address assignment principle of wireless network B the IP address of projector.This IP address can be preassigned, for example, wireless network B can specify in advance certain IP address field or even certain concrete IP address be used as the IP address of projector, perhaps can be Random assignment.In step S510, the main control unit 210 of projector can use set IP address, broadcasts specific message by transmission unit 220 with fixing interval (for example, 5 seconds), and indicating it is projector.In step S511, the processing unit 310 of electronic equipment can the control linkage unit 320 disconnects and being connected of WLAN (wireless local area network) A, and again connects with wireless network B.Although in Fig. 5, step S511 is illustrated in after the step S510, yet it should be appreciated by those skilled in the art that any one execution that step S511 also can be between step S506 to S510.After being connected to wireless network B, in step S512, the broadcast message of the processing unit 310 of electronic equipment in can the monitoring wireless network B is to obtain the IP address of projector.Then, in step S513, the processing unit 310 of electronic equipment can use the IP address foundation of the projector that obtains and the point to point connect of projector via linkage unit 320.
As mentioned above, in wireless network B, specified concrete IP address as the IP address of projector, and should specify has been in the situation known to each equipment (for example electronic equipment in this example) among the wireless network B, in the broadcast that step S510 sends, need not to specify this broadcast from projector, and because the IP address of projector is that electronic equipment is known, therefore in step S12, also need not additionally to obtain the IP address of projector.In addition, in examples more of the present invention, electronic equipment can also be according to the specified IP address that is used for projector, with regular time the interval in wireless network B, seek projector, initiatively set up point to point connect with this, and step S10 and S12 therefore can be optional in this case.
Return now Fig. 4, next, in the step 402 of Fig. 4, the mirror image acquiring unit 330 of electronic equipment obtains the mirror image of the demonstration on the display screen 380 of electronic equipment.The exemplary process diagram of obtaining according to an embodiment of the invention mirror image has been shown, i.e. the detailed description of step 402 among Fig. 6.
As shown in Figure 6, in step S601, the mirror image acquiring unit 330 of electronic equipment can be accessed the FrameBuffer buffer memory of the operating system of electronic equipment, obtains soon the lower piece image in the demonstration screen display of electronic equipment, and obtains the resolution of this image.In step S602, the resolution that the processing unit 310 of electronic equipment can be determined this image is required resolution (for example 800*600) whether.If resolution is 800*600, in step S604, can be to be suitable for the form (for example PNG form) that projector is processed with compression of images by compression unit 340 then.If resolution is not 800*600, then before step S604, need to be in step S603 be the resolution of 800*600 with compression of images by compression unit 340.For example, suppose it is H*W, then can be set to 800 by the high H of compression unit 340 these images, by formula W=H*600/800 its width is compressed.As mentioned above, above example only is schematic.For example, in step S601, can carry out the picture signal that direct sectional drawing obtains near-synchronous by the image on the display screen of 330 pairs of electronic equipments of mirror image acquiring unit, rather than from the FrameBuffer buffer memory of operating system, obtain.For example, the required resolution among the step S602 also can be other resolution, such as 1024*768,1280*720 etc.In addition, for example in step S604, also compression of images can be suitable for the form that projector is processed for other, rather than the PNG form.
It is pointed out that and broadly understand employed term " compression " among the present invention.In above-mentioned example, when the resolution of the image that obtains greater than required resolution (for example 800*600), for example, when the resolution of the image that obtains is 1024*768, can be by formula W=H*600/800 with its width boil down to 600.Yet, when the resolution of the image that obtains less than required resolution, when for example being 480*360, the width that employed term " compression " refers to the image that will obtain among the present invention expands to 600.
Again return Fig. 4, in the step S403 of Fig. 4, electronic equipment can send the mirror image (for example, sending with ICP/IP protocol) that obtains by linkage unit 320 to projector.In step S404, projector can carry out projection to the mirror image that receives.
Whether alternatively, after sending mirror image, the electronic equipment place can also carry out the aftertreatment flow process, be fit to the check wireless network that projector was connected to.This aftertreatment flow process has been shown among Fig. 7.As shown in Figure 7, in step S701, the processing unit 310 of electronic equipment can judge whether to receive the affirmation information from projector.If receive in 50 milliseconds, then processing unit 310 can be judged the success of transmission image in step S702, and can send next mirror image by linkage unit 320 in step S703, and again gets back to step S701.Yet if do not receive affirmation information from projector in 50 milliseconds in step S701, flow process proceeds to step S704.In step S704, start counter 370, in step S705, whether the time arrived 1 second after processing unit 310 can be judged startup counter 370, if do not have, got back to step S701 and waited for the affirmation information that receives from projector.Also do not receive the confirmation if whenever surpass 50 milliseconds, counter 370 can increase progressively 1.If the judgement time has reached 1 second among the step S705, in step 760, processing unit 310 can judge whether counter 370 surpasses threshold value, for example, whether in 1 second greater than 10.If in 1 second, be not more than 10, then can be with counter 370 zero clearings in step S707, and turn back to step S701.If greater than 10, then processing unit 310 can be unsuitable for projector by prompting user wireless network B in step 708, finishes this aftertreatment flow process in 1 second.
Fig. 8 shows and comes the actual effect figure of mirror image of the display screen of projection electronic equipment according to the embodiment of the invention with projector.As shown in Figure 8, technical scheme of the present invention has realized with the real-time projection of wireless mode to the displaying contents on the electronic equipment.And owing to not needing connecting line, reduced the cost of projector operation and maintenance.
Above-described embodiment to be interpreted as schematic examples more of the present invention.It will be understood by those skilled in the art that and to carry out various modifications, merging and change to embodiment in the situation that do not deviate from scope of the present invention.Particularly, if technical may, can configure to merge different piece solution among the different embodiment by other.Then, scope of the present invention is defined by the following claims.
Claims (24)
1. projector comprises:
Transmission unit is suitable for setting up wireless connections with external electronic device;
Main control unit is suitable for controlling the mirror image that described transmission unit receives the display screen of described external electronic device; And
Projecting cell is suitable for the mirror image that receives is carried out projection.
2. projector according to claim 1, wherein, described transmission unit also is suitable for setting up the WLAN (wireless local area network) that described external electronic device can add.
3. projector according to claim 2, wherein, if described external electronic device has been connected to other wireless networks except described WLAN (wireless local area network):
Described transmission unit also is adapted to operate under equipment mode, and receives network identity and/or the access code of described other wireless networks of described external electronic device setting;
Described main control unit also is suitable for controlling described transmission unit and seeks described other wireless networks according to the network identity that receives, and is connected with described other wireless networks foundation.
4. projector according to claim 3, wherein, described main control equipment also is suitable for arranging according to the IP distribution principle of described other wireless networks the IP address of projector in connection procedure, described transmission unit also is suitable for using set IP address that described other wireless networks are carried out fixed time broadcast, the IP address of projector to indicate described IP address, so that described external electronic device can be obtained described IP address and set up point to point connect with described projector.
5. projector according to claim 4, wherein, described IP address can be the IP address of specially appointed IP address or Random assignment.
6. projector according to claim 3 also comprises storer, is suitable for storing the described mirror image that receives by described transmission unit and network identity and the access code of described other wireless networks.
7. projector according to claim 3, wherein, described transmission unit uses at least a in WiFi, infrared, TransferJet, the DLNA interface protocol.
8. projector according to claim 3 also comprises:
Driving circuit is connected to described main control unit and described projecting cell, is suitable for providing driving for described projecting cell under the control of described main control unit;
Power supply unit, each assembly that is suitable in the projector provides power; And
Heat-sink unit is suitable for reducing the working temperature of described projecting cell by heat radiation.
9. electronic equipment comprises:
Display screen;
Linkage unit is suitable for setting up wireless connections with projector;
The mirror image acquiring unit is suitable for obtaining the mirror image of described display screen, sends to described projector by described linkage unit, to carry out projection; And
Processing unit is suitable for controlling described linkage unit and described mirror image acquiring unit.
10. electronic equipment according to claim 9, wherein, when described electronic equipment was not connected to any network, described processing unit was suitable for controlling described linkage unit and is directly connected to the WLAN (wireless local area network) that described projector is set up.
11. electronic equipment according to claim 9, wherein, during external network when described electronic equipment has been connected to the WLAN (wireless local area network) of setting up except described projector, described processing unit is suitable for controlling described linkage unit and disconnects and being connected of described external network, and connects with described WLAN (wireless local area network); Described electronic equipment also comprises:
The setup of attribute unit, the setup of attribute that is suitable for described projector is from equipment, and sign and/or the access code of described external network are set to described projector;
Described processing unit also is suitable for controlling described linkage unit and disconnects and being connected of described WLAN (wireless local area network), again be connected in the described external network, monitor the broadcasting in the described external network, be connected to the IP address that arranges after the described external network to obtain described projector according to the sign of described external network and/or access code, and control described linkage unit and set up point-to-point the connection with described projector.
12. electronic equipment according to claim 9, wherein, described mirror image acquiring unit also is suitable for obtaining soon the lower piece image in the demonstration screen display of electronic equipment from the FrameBuffer buffer memory of the operating system of described electronic equipment, to obtain the resolution of described lower piece image;
Described electronic equipment also comprises:
Compression unit is suitable for judging that at described processing unit the resolution of described lower piece image is not in the situation of required resolution, is required resolution with described next width of cloth compression of images, and boil down to is suitable for the form that described projector is processed.
13. electronic equipment according to claim 9 also comprises:
Storage unit is used for storing the mirror image that described mirror image acquiring unit obtains.
14. electronic equipment according to claim 9 also comprises:
Counter is suitable for the time of described linkage unit after described projector sends mirror image is counted; And
Described processing unit is suitable for determining according to the count value of described counter whether described external network is suitable for described projector.
15. a method of using at projector comprises:
Set up wireless connections with external electronic device;
Receive the mirror image of the display screen of described external electronic device; And
The mirror image that receives is carried out projection.
16. method according to claim 15 also comprises:
Set up the WLAN (wireless local area network) that described external electronic device can add;
Be connected in the situation of other wireless networks except described WLAN (wireless local area network) in described external electronic device:
Be operated under equipment mode, and receive network identity and/or the access code of described other wireless networks of described external electronic device setting;
Control described transmission unit and seek described other wireless networks according to the network identity that receives, and be connected with described other wireless networks foundation.
17. method according to claim 16 wherein, also comprises:
The IP address of projector is set according to the IP distribution principle of described other wireless networks in connection procedure, use set IP address that described other wireless networks are carried out fixed time broadcast, the IP address of projector to indicate described IP address, so that described external electronic device can be obtained described IP address and set up point to point connect with described projector.
18. method according to claim 16, wherein, described IP address can be the IP address of specially appointed IP address or Random assignment.
19. method according to claim 16, wherein, at least a in WiFi, infrared, TransferJet, the DLNA interface protocol used in the foundation of described wireless connections.
20. a method of using at electronic equipment comprises:
Set up wireless connections with projector;
Obtain the mirror image of the display screen of described electronic equipment, send to carry out projection to projector.
21. method according to claim 20 wherein, when described electronic equipment is not connected to any network, is directly connected to the WLAN (wireless local area network) that described projector is set up.
22. method according to claim 20, wherein, during external network when described electronic equipment has been connected to the WLAN (wireless local area network) of setting up except described projector:
Disconnection is connected with described external network, and connects with described WLAN (wireless local area network);
Be from equipment with the setup of attribute of described projector, and sign and/or the access code of described external network are set to described projector;
Again be connected in the described external network, monitor the broadcasting in the described external network, be connected to the IP address that arranges after the described external network to obtain described projector according to the sign of described external network and/or access code, and set up point-to-point the connection with described projector.
23. method according to claim 20 also comprises:
From the FrameBuffer buffer memory of the operating system of electronic equipment, obtain soon the lower piece image in the demonstration screen display of electronic equipment, and obtain the resolution of described lower piece image;
Resolution at described lower piece image is not in the situation of required resolution, is required resolution with described next width of cloth compression of images, and boil down to is suitable for the form that described projector is processed.
24. method according to claim 20 also comprises:
The time that the described projector of subtend sends after the mirror image counts; And
Determine according to the count value of described counter whether described external network is suitable for described projector.
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| CN201210295390.0A CN102854717B (en) | 2012-08-20 | 2012-08-20 | Projector, electronic equipment and using methods on projector |
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| CN201210295390.0A CN102854717B (en) | 2012-08-20 | 2012-08-20 | Projector, electronic equipment and using methods on projector |
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