CN101394526A - Video signal searching method for a projection device and the projection device thereof - Google Patents
Video signal searching method for a projection device and the projection device thereof Download PDFInfo
- Publication number
- CN101394526A CN101394526A CNA2007102017990A CN200710201799A CN101394526A CN 101394526 A CN101394526 A CN 101394526A CN A2007102017990 A CNA2007102017990 A CN A2007102017990A CN 200710201799 A CN200710201799 A CN 200710201799A CN 101394526 A CN101394526 A CN 101394526A
- Authority
- CN
- China
- Prior art keywords
- video signal
- signal interface
- search
- interface
- projector equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides a video signal search method of a projection device, and the video signal search method is used for carrying out the search of a plurality of video signal interfaces containing a first video signal interface. The method comprises the following steps: whether a power supply terminal of the first video signal interface has the voltage output or not is detected and judged, if the power supply terminal has the voltage output, a video signal which is output by the first video signal interface is switched and displayed. The invention further provides the projection device. The video signal search method can know whether a video signal source is accessed or not through the detection of the power supply terminal of the video signal interface when the projection device is in the power on state or in the no display state, thereby rapidly switching and displaying information which wants to be seen by a user, meeting the requirements of the user and enhancing the satisfaction of the user on the product.
Description
Technical field
The present invention relates to projection arrangement, relate in particular to a kind of projector equipment video signal searching method and projector equipment.
Background technology
Projector equipment has been widely used in all trades and professions.Meeting, teaching, product introduction or the like all may be used projector equipment.Projector equipment comprises electronic module and optical module.Electronic module is used for from the video signal interface receiving video signals this vision signal being handled, and generates modulation signal.Optical module is used for exporting in the mode of optical signalling adjusting signal, is projected on the wall or on the curtain.
Operated by rotary motion has a plurality of video signal interfaces on the projector equipment, Video Graphics Array (D-Sub is commonly called as VGA, Video Graphics Adapter) interface for example, SCART interface, digital visual interface (DVI) etc.Wherein, D-Sub is commonly called as VGA (Video Graphics Adapter, Video Graphics Array) interface, and the D-Sub interface can be used for connecting the D-Sub connector of computer, and it comprises 15 pins (pin) of asymmetric distribution.SCART (Syndicat des Constructeursd ' Appareils Radior é cepteurs et T é l é vi seurs) interface is a kind of audio-video interface of special use, and it is that European mandatory requirement is used for the interconnection and interflow interface on satellite television receiver, television set, video tape recorder and other audio ﹠ video equipment.DVI (Digital Visual Interface) formed the interface standard that numeral shows that working group (DDWG, Digital Display Working Group) releases jointly by many companies in 1999.
Existing projector equipment all is to search in regular turn to the searching method of vision signal.Store search sequence in the control module of projector equipment, start shooting or when being in no show state at every turn, control module just judges successively according to search sequence whether each video signal interface has the effective video signal to transmit, if find certain video signal interface the output of effective video signal is arranged, the vision signal that just shows this video signal interface, otherwise continue to detect next video signal interface.At present, a kind of very complicated algorithm that generally all adopts Texas Instrument (Texas Instruments) to invent detects and judges whether video signal interface has the output of effective video signal, and video signal interface of every detection all will spend certain hour.In fact, people are when using projector equipment, relatively more fixing video signal source is used in the capital, for example desktop computer, notebook computer, television set, video tape recorder etc., search in regular turn and judge that the effective video signal source can waste user's time, can't allow the user obtain the result who wishes in time.
Summary of the invention
In view of this, but be necessary to provide a kind of fast detecting particular video signal input and switch the projector equipment video signal searching method that shows.
In addition, also be necessary to provide a kind of projector equipment.
A kind of projector equipment video signal searching method is used for a plurality of video signal interfaces that comprise first video signal interface are searched for.Described projector equipment video signal searching method may further comprise the steps:
Detect the power end of first video signal interface;
Judge whether described power end has voltage output;
If described power end has voltage output, switch first vision signal that shows described first video signal interface output.
A kind of projector equipment.Described projector equipment comprises first video signal interface, first detecting unit, switch unit and display unit.Described first video signal interface is used to receive first vision signal.Described first detecting unit is used to detect the power end of a video signal interface, and exports switching signal when described power end has voltage output, otherwise exports first index signal.Described switch unit is used for receiving and export described first vision signal according to described switching signal.Described display unit is used to show described first vision signal.
When can or being in no show state in the projector equipment start, the present invention brings in to learn whether have video signal source to insert by the power supply that detects video signal interface, thereby can switch explicit user fast and wish the information seen, satisfy user's demand, promote the satisfaction of user product.
Description of drawings
Fig. 1 is the structured flowchart of the projector equipment of a better embodiment.
Fig. 2 is the flow chart of first searching method of the projector equipment video signal searching method of a better embodiment.
Fig. 3 is the flow chart of second searching method of the projector equipment video signal searching method of a better embodiment.
Fig. 4 is the flow chart of the 3rd searching method of the projector equipment video signal searching method of a better embodiment.
Fig. 5 is the structured flowchart of the projector equipment of another better embodiment.
Fig. 6 is the flow chart of the projector equipment video signal searching method of another better embodiment.
Embodiment
As shown in Figure 1, in one preferred embodiment, projector equipment 100 comprises first detecting unit 10, switch unit 12, display unit 14, memory cell 16, search switch 18, search unit 20, second detecting unit 22, control module 24, first video signal interface 26, second video signal interface 28 and the 3rd video signal interface 30.Control module 24 comprises control unit 242 and setup unit 244.
Wherein, first video signal interface 26 is used for receiving first vision signal from the first video signal source (not shown).Second video signal interface 28 is used for receiving second vision signal from the second video signal source (not shown).The 3rd video signal interface 30 is used for receiving the 3rd vision signal from the 3rd video signal source (not shown).First video signal interface 26 can be Video Graphics Array (D-Sub, be commonly called as Video Graphics Adapter, VGA) interface, SCART interface, digital visual interface (DVI) and HDMI (High Definition Multimedia Interface) (HDMI, High-Definition Multimedia) etc. have the video signal interface of power end.Second video signal interface 28 and the 3rd video signal interface 30 can be D-Sub interface, SCART interface, DVI interface, HDMI interface, S-terminal (S-Video) interface, composite video (Composite) interface or the like.Second video signal interface 28 and the 3rd video signal interface 30 can also be wave points.
First detecting unit 10 links to each other with power end a1, switch unit 12 and the control unit 242 of first video signal interface 26, be used for detecting and judge whether power end a1 has voltage to export, and having and do not have and export the switching signal and first index signal respectively according to power end a1 output voltage.For example, first video signal interface 26 is for having the D-Sub interface of 15 pins (pin), and it is used to connect the D-Sub connector of computer, to receive first vision signal from computer.Then the 9th pin of D-Sub interface is power end a1.When power end a1 had output voltage, first detecting unit, 10 output one high level (as 4.3V) were as switching signal, and when power end a1 no-output voltage, first detecting unit, 10 output one low levels (as OV) are as first index signal.
Switch unit 12 links to each other with the vision signal end a2 of first detecting unit 10, second detecting unit 22, first video signal interface 26, the vision signal end b of second video signal interface 28 and vision signal end c, display unit 14, the search unit 20 of the 3rd video signal interface 30.Switch unit 12 is used for according to switching signal from the vision signal end receiving video signals of first video signal interface 26, second video signal interface 28 or the 3rd video signal interface 30 and output to display unit 14.Diverter switch 12 can be switching circuit.
Second detecting unit 22 links to each other with switch unit 12, control unit 24, is used to detect the output signal of switch unit 12, and having and do not have and export the 3rd index signal and the 4th index signal respectively according to switch unit 12 output signals.When detecting switch unit 12 in vision signal when output, arranged, second detecting unit, 22 outputs the 3rd index signal, when detecting the no video signals output of switch unit 12, second detecting unit 22 is exported the 4th index signal.For example, when switch unit 12 has vision signal output, second detecting unit, 22 output high level (the 3rd index signal), otherwise output low level (the 4th index signal).Be understandable that in order to prevent the situation of erroneous judgement, second detecting unit 22 is when detecting no video signal output, time-delay a period of time is exported the 4th index signal again.
Be provided with the setting program of operation projector equipment 100 in the control module 24, it is according to the search routine of this setting program control projector equipment 100.
Like this, after the projector equipment start, first detecting unit 10 promptly detects the power end a1 of first video signal interface 26, if power end a1 has output voltage, promptly represent first video signal source to be connected on first video signal interface 26, then first detecting unit, 10 output switching signals are given switch unit 12, and switch unit 12 outputs to display unit 14 with first vision signal.If detecting, first detecting unit 10 learns power end a1 no-output voltage, then export first index signal, after control unit 242 receives first index signal, send search instruction to search unit 20, control search unit 20 is searched for other video signal interface in regular turn according to conventional computational methods.Find to have the input of effective video signal if search unit 20 detects, then show corresponding vision signal is outputed to display unit 14 to switch unit 12 output switching signals.If search unit 20 detects the back and do not find that the input of effective video signal is arranged, then export second index signal.After control unit 242 receives second index signal, send enabling signal, detect power end a1 to control first detecting unit 10 to first detecting unit 10.Understand easily, cyclic search like this is back (for example learning by counting) several times, and control unit 242 may command, first detecting unit 10 and search unit 20 stop action, and notify the user that available vision signal is not arranged.
When the situation of vision signal disappearance in use appearred in projector equipment, second detecting unit 22 can be exported the 4th index signal, and notice control unit 242 vision signals disappear.Control unit 242 is to first detecting unit, 10 output enabling signals, preferential first video signal interface 26 that detects of control.Have only to detect and learn (first detecting unit, 10 outputs, first index signal) when first video signal interface 26 does not connect first video signal source, control unit 242 is just to search unit 20 output search instructions, other video signal source of control detection.
First video signal interface 26 is detected, judges or switch in the process that shows in the projector equipment start, or in the use of projector equipment, if the user wishes to show the signal of other video signal source, the vision signal of second video signal interface 28 or the output of the 3rd video signal interface 30 for example, can be by search switch 18 output search instructions, control 20 pairs second video signal interfaces 28 of search unit and the 3rd video signal interface 30 detect.When if this moment, second video signal interface 28 and the 3rd video signal interface 30 no effective video signals were exported (search unit 20 outputs second index signal), whether control unit 242 can have signal source to insert to detect again to first detecting unit, 10 output enabling signals on first video signal interface 26.
Below be in the preferred embodiment, the flow process that is used for the video signal searching method of projector equipment 100 that first to the 3rd video signal interface is searched for, this searching method comprises following three kinds of situations, is respectively first searching method 200, second searching method 300 and the 3rd searching method 400.
As shown in Figure 2, first searching method 200 is the searching method of projector equipment start back projector equipment vision signal, and this method may further comprise the steps:
S101, default cyclic search frequency n=0.
S103 detects the power end of first video signal interface.
S105 judges whether this power end has voltage output, if execution in step S107 is arranged, otherwise execution in step S109.
S107 switches the vision signal that shows this first video signal interface output.Flow process finishes.
S109 obtains search sequence, and search sequence comprises the search order information of the second and the 3rd video signal interface.
S111, detect the second or the 3rd video signal interface according to search sequence whether the output of effective video signal is arranged, if execution in step S113 is arranged, if do not have then detect next video signal interface in regular turn, execution in step S117 when detecting the video signal interface that effective video signal output arranged, otherwise execution in step S113.
S113 puts cyclic search frequency n=n+1.
S115 judges the cyclic search frequency n whether more than or equal to m (m is a default integer), if, display reminding information, the (not shown) that for example " do not have signal source ", this search routine finishes, otherwise execution in step S103.In the present embodiment, default m=5.
S117 switches the vision signal that shows corresponding video signal interface output.
Flow process finishes.
As shown in Figure 3, second searching method 300 is a projector equipment vision signal in service when disappearing, the searching method of projector equipment vision signal, and this method may further comprise the steps:
S201, whether judge currently just has in video signal displayed, if having, this flow process finishes, otherwise execution in step S203.
S203, default cyclic search frequency n=0.
S205 detects the power end of first video signal interface.
S207 judges whether this power end has voltage output, if execution in step S209 is arranged, otherwise execution in step S211.
S209 switches the vision signal that shows this first video signal interface output.
S211 obtains search sequence, and search sequence comprises the search order information of the second and the 3rd video signal interface.
S213, detect the second or the 3rd video signal interface according to search sequence whether the output of effective video signal is arranged, if execution in step S219 is arranged, if do not have then detect next video signal interface in regular turn, execution in step S219 when detecting the video signal interface that effective video signal output arranged, otherwise execution in step S215 (searching times adds 1).
S215 puts cyclic search frequency n=n+1.
S217 judges the cyclic search frequency n whether more than or equal to m (m is a default integer), if, display reminding information, the (not shown) that for example " do not have signal source ", this search routine finishes.Otherwise execution in step S205.In the present embodiment, default m=5.
S219 switches the vision signal that shows corresponding video signal interface output.
Flow process finishes.
As shown in Figure 4, the 3rd searching method 400 detects, judges first video signal interface or switch in the process that shows for the projector equipment start, or in the use of projector equipment, when search switch is exported search instruction according to user's operation, the searching method of projector equipment vision signal, this method may further comprise the steps:
S301 receives search instruction.
S303 obtains search sequence, and search sequence comprises the search order information of the second and the 3rd video signal interface.
S305, detect the second or the 3rd video signal interface according to search sequence whether the output of effective video signal is arranged, if execution in step S307 is arranged, if do not have then detect next video signal interface in regular turn, execution in step S307 when detecting the video signal interface that output arranged, otherwise execution in step S309.
S307 switches the vision signal that shows corresponding video signal interface output.
S309 detects the power end of first video signal interface.
S311 judges whether this power end has voltage output, if execution in step S113 is arranged, otherwise execution in step S115.
S313 switches the vision signal that shows this first video signal interface output.
S315, display reminding information for example " does not have signal source ".
Flow process finishes.
So, fast detecting and switch the vision signal of particular video signal interface in the time of can being implemented in projector equipment start or being in no show state is saved user's time, satisfies user's demand, and the lifting user is to the satisfaction of projector equipment.Especially and since the power end of video signal interface unlike earth terminal, understand with other holding wire altogether, the situation that can occur judging by accident not.
As shown in Figure 5, in another preferred embodiment, projector equipment 500 comprises first to the 4th detecting unit 322,22,324 and 326, switch unit 12, display unit 14, memory cell 16, control module 34, first to the 3rd video signal interface 26,36 and 38.Control module 34 comprises control unit 342 and setup unit 344.
Wherein, first to the 3rd video signal interface 26,36 and 38 is respectively applied for from first to the 3rd video signal source (not shown) and receives first vision signal, second vision signal and the 3rd vision signal.First video signal interface 26, second video signal interface 36 and the 3rd video signal interface 38 can be D-Sub interface, SCART interface, and DVI interface, HDMI interface etc. has the video signal interface of power end.The first, third and fourth detecting unit 322,324 is similar with 326 26S Proteasome Structure and Function.
First detecting unit 322 links to each other with power end a1, switch unit 12 and the control unit 342 of first video signal interface 26, whether have voltage output, and having and do not have and export the switching signal and first index signal respectively according to power end a1, output voltage if being used to detect power end a1.In the present embodiment, first detecting unit 322 is a gate-controlled switch.This gate-controlled switch is closed and disconnected under the control of control unit 342, to set up between the power end a1 of first video signal interface 26 and switch unit 12 and to disconnect and electrically connecting.When the gate-controlled switch of first detecting unit 322 is closed, the output signal of first detecting unit 322 is relevant with the voltage of power end a1, when power end a1 has voltage (as 4.3V), first detecting unit, 322 output one high level (for example 4.3V), as switching signal, when power end a1 no-voltage, first detecting unit, 322 output 0V are as first index signal.
The 3rd detecting unit 324 links to each other with power end b1, switch unit 12 and the control unit 342 of second video signal interface 36, whether have voltage output, and having and do not have and export the switching signal and first index signal respectively according to power end b1, output voltage if being used to detect power end b1.In the present embodiment, the 3rd detecting unit 324 also is a gate-controlled switch.This gate-controlled switch is closed and disconnected under the control of control unit 342, to set up between the power end b1 of second video signal interface 36 and switch unit 12 and to disconnect and electrically connecting.
The 4th detecting unit 326 links to each other with power end c1, switch unit 12 and the control unit 342 of the 3rd video signal interface 38, whether have voltage output, and having and do not have and export the switching signal and first index signal respectively according to power end c1 output voltage if being used to detect power end c1.In the present embodiment, the 4th detecting unit 326 is a gate-controlled switch.This gate-controlled switch is closed and disconnected under the control of control unit 342, to set up between the power end c1 of the 3rd video signal interface 38 and switch unit 12 and to disconnect and electrically connecting.
Be provided with the setting program of operation projector equipment 200 in the control module 34, it is according to the search routine of this setting program control projector equipment 200.
Similar in second detecting unit 22 and the previous embodiment, it links to each other with switch unit 12, control unit 342, be used to detect the output signal of switch unit 12, and having and do not have and export the 3rd index signal and the 4th index signal respectively according to switch unit 12 output signals.
Like this, in the projector equipment start back or the projector equipment course of work during dropout, control unit 342 promptly obtains search sequence from memory cell 16, and control first detecting unit 322 or the 3rd detecting unit 324 or the 4th detecting unit 326 couples of power end a1, b1 or c1 according to this search sequence and detect, if power end a1 has output voltage, promptly to switch unit 12 output switching signals, switch unit 12 obtains first vision signal and will output to display unit 14 from the video output terminals a2 of first video signal interface 26 first detecting unit 322.If power end a1 no-output voltage, first detecting unit, 322 outputs, first index signal, control unit 342 promptly transmits control signal to next detecting unit according to search sequence.When the video signal interface in the search sequence all search for finish and do not have video signal source and insert after, control unit 342 control and is carried out repeat search, repeatedly searches for promptly to stop search after having no result, and notifies the user that available vision signal is not arranged.
Below be in another preferred embodiment, be used for the flow process of the video signal searching method 600 of projector equipment 500 that a plurality of video signal interfaces are searched for.
As shown in Figure 6, projector equipment video signal searching method 600 may further comprise the steps:
S401, whether judge currently just has in video signal displayed, if having, this flow process finishes, otherwise that execution in step S403 judges is current not just in video signal displayed.When projector equipment 500 start just, need not carry out this step.
S403, default cyclic search frequency n=0.
S405 obtains search sequence, and search sequence comprises the search order information of a plurality of video signal interfaces of needs search.In the present embodiment, first video signal interface 26 ranked first the position, second video signal interface 36 ranked second the position, and the 3rd video signal interface 38 ranked third the position.
S407 is provided with search point and transmits control signal with gating coherent detection unit to the coherent detection unit according to search sequence, as the first, the 3rd or the 4th detecting unit 322,324 or 326.
S409 detects the power end of corresponding video signal interface.
S411 judges whether this power end has voltage output, if execution in step S419 is arranged, otherwise execution in step S413.
S413 judges whether video signal interface in the search sequence has all been searched for to finish, if there is not execution in step S407, otherwise execution in step S415.
S415 puts cyclic search frequency n=n+1.
S417 judges the cyclic search frequency n whether more than or equal to m (m is a default integer), if not more than or equal to m, and execution in step S405, otherwise display reminding information, the (not shown) that for example " do not have signal source ", this search routine finishes.In the present embodiment, default m=5.
S419 switches the vision signal that shows corresponding video signal interface output.
Flow process finishes.
So, fast detecting and switch the vision signal of particular video signal interface in the time of can being implemented in projector equipment start or being in no show state is saved user's time, satisfies user's demand, and the lifting user is to the satisfaction of projector equipment.Especially and since the power end of video signal interface unlike earth terminal, understand with other holding wire altogether, the situation that can occur judging by accident not.
Claims (13)
- [claim 1] a kind of projector equipment video signal searching method is used for a plurality of video signal interfaces that comprise first video signal interface are searched for; Described projector equipment video signal searching method may further comprise the steps:Detect the power end of first video signal interface;Judge whether described power end has voltage output;If described power end has voltage output, switch first vision signal that shows described first video signal interface output.
- [claim 2] projector equipment video signal searching method as claimed in claim 1 is characterized in that, further comprises step:If described power end no-voltage output obtains search sequence; The search order information that comprises other video signal interface except that described first video signal interface in the described search sequence;Whether have effective video signal output, if having then switches the vision signal that shows that corresponding video signal interface is exported according to described search sequence if detecting described other video signal interface.
- [claim 3] projector equipment video signal searching method as claimed in claim 1 is characterized in that, further comprises step:Before detecting the power end of described first video signal interface, whether current have vision signal show, detect the power end of described first video signal interface if current no video signal is showing if judging.
- [claim 4] projector equipment video signal searching method as claimed in claim 3 is characterized in that, further comprises step:If current no video signal is showing and the output of the power end no-voltage of described first video signal interface, obtain search sequence; The search order information that comprises other video signal interface except that described first video signal interface in the described search sequence;According to described other video signal interface of described search sequence search whether the output of effective video signal is arranged, if having then switches the signal that shows that corresponding video signal interface is exported.
- [claim 5] projector equipment video signal searching method as claimed in claim 1 is characterized in that, in the process of carrying out above-mentioned steps, if receive search instruction, then carries out following steps:Obtain search sequence; The search order information that comprises other video signal interface except that described first video signal interface in the described search sequence;According to described other video signal interface of described search sequence search whether the output of effective video signal is arranged, if having then switches the signal that shows that corresponding video signal interface is exported;If all video signal interfaces all do not have the output of effective video signal in the described search sequence, whether the power end that then detects and judge first video signal interface has voltage output, if described power end has voltage output, switch the signal that shows described first video signal interface output.
- [claim 6] projector equipment video signal searching method as claimed in claim 1 is characterized in that, before the power end step of described first video signal interface of described detection, further comprises step:Obtain search sequence; The search order information that comprises described a plurality of video signal interfaces in the described search sequence.
- [claim 7] projector equipment video signal searching method as claimed in claim 6 is characterized in that, further comprises step:Whether the power end that detects other video signal interface except that described first video signal interface according to described search sequence has voltage output, if having then switches the vision signal that the corresponding video signal interface of demonstration is exported.
- [claim 8] a kind of projector equipment comprises first video signal interface, is used to receive first vision signal; It is characterized in that described projector equipment also comprises:First detecting unit is used to detect the power end of described first video signal interface, and exports switching signal when described power end has voltage output;Switch unit is used for receiving and export described first vision signal according to described switching signal;Display unit is used to show described first vision signal.
- [claim 9] projector equipment as claimed in claim 8 is characterized in that, described projector equipment also comprises: second video signal interface is used to receive second vision signal; The 3rd video signal interface is used to receive the 3rd vision signal; Memory cell is used for the memory search sequence, and wherein, described search sequence comprises the search order information of second video signal interface and the 3rd video signal interface; Search unit, be used for when the power end no-voltage output of described first video signal interface according to described search sequence search the second and the 3rd video signal interface, and when one of the described second and the 3rd video signal interface has the output of effective video signal, export switching signal to described switch unit, show the second or the 3rd vision signal to switch.
- [claim 10] projector equipment as claimed in claim 9 is characterized in that, described projector equipment also comprises: search switch is used to export search instruction; Search unit also is used for searching for the second and the 3rd video signal interface according to described search instruction according to described search sequence, and exports switching signal to described switch unit when one of the described second and the 3rd video signal interface has the output of effective video signal.
- [claim 11] projector equipment as claimed in claim 9, it is characterized in that, described projector equipment also comprises: second detecting unit, be used for described switch unit is detected, and do not have the output of video signal at described switch unit and the time control described first detecting unit power end of described first video signal interface is detected.
- [claim 12] projector equipment as claimed in claim 8 is characterized in that, described projector equipment also comprises: second video signal interface is used to receive second vision signal; The 3rd detecting unit is used to detect the power end of described second video signal interface, and exports switching signal to described switch unit when the power end of described second video signal interface has voltage output, shows second vision signal to switch.
- [claim 13] projector equipment as claimed in claim 12, it is characterized in that described projector equipment also comprises: memory cell is used for the memory search sequence, wherein, described search sequence comprises the search order information of first video signal interface and second video signal interface; Control unit is used for transmitting control signal to the described first or the 3rd detecting unit according to described search sequence, and control the first or the 3rd detecting unit detects the power end of first or second video signal interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102017990A CN101394526B (en) | 2007-09-21 | 2007-09-21 | Video signal searching method for a projection device and the projection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102017990A CN101394526B (en) | 2007-09-21 | 2007-09-21 | Video signal searching method for a projection device and the projection device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101394526A true CN101394526A (en) | 2009-03-25 |
| CN101394526B CN101394526B (en) | 2011-01-05 |
Family
ID=40494568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007102017990A Expired - Fee Related CN101394526B (en) | 2007-09-21 | 2007-09-21 | Video signal searching method for a projection device and the projection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101394526B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139132A1 (en) * | 2009-06-01 | 2010-12-09 | 海尔集团公司 | Tv signal switching box and controlling method thereof |
| CN102164263A (en) * | 2011-03-08 | 2011-08-24 | 华为终端有限公司 | Device and method of audio/video signal transmission interface |
| CN102237072A (en) * | 2010-05-07 | 2011-11-09 | 宏碁股份有限公司 | Method for detecting signal source |
| CN107135355A (en) * | 2017-04-19 | 2017-09-05 | 北京小米移动软件有限公司 | HDMI inputs source switch method, device and computer-readable recording medium |
| CN112437281A (en) * | 2019-08-26 | 2021-03-02 | 中强光电股份有限公司 | Projection device and projection signal searching method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567994B (en) * | 2005-03-08 | 2011-10-12 | 精工爱普生株式会社 | Image source search support method, and image display apparatus using the search support method |
| CN100389594C (en) * | 2005-03-28 | 2008-05-21 | 联想(北京)有限公司 | Projection display equipment signal source searching method |
-
2007
- 2007-09-21 CN CN2007102017990A patent/CN101394526B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010139132A1 (en) * | 2009-06-01 | 2010-12-09 | 海尔集团公司 | Tv signal switching box and controlling method thereof |
| CN102237072A (en) * | 2010-05-07 | 2011-11-09 | 宏碁股份有限公司 | Method for detecting signal source |
| CN102237072B (en) * | 2010-05-07 | 2013-06-19 | 宏碁股份有限公司 | Method for detecting signal source |
| CN102164263A (en) * | 2011-03-08 | 2011-08-24 | 华为终端有限公司 | Device and method of audio/video signal transmission interface |
| CN102164263B (en) * | 2011-03-08 | 2012-09-05 | 华为终端有限公司 | Device and method of audio/video signal transmission interface |
| US9351076B2 (en) | 2011-03-08 | 2016-05-24 | Huawei Device Co., Ltd. | Audio and video signal transmission interface apparatus and method thereof |
| CN107135355A (en) * | 2017-04-19 | 2017-09-05 | 北京小米移动软件有限公司 | HDMI inputs source switch method, device and computer-readable recording medium |
| CN107135355B (en) * | 2017-04-19 | 2020-07-31 | 北京小米移动软件有限公司 | HDMI input source switching method, device and computer readable storage medium |
| CN112437281A (en) * | 2019-08-26 | 2021-03-02 | 中强光电股份有限公司 | Projection device and projection signal searching method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101394526B (en) | 2011-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1173259C (en) | Analog/digit display adapter and computor system having said adaptor | |
| CN101394526B (en) | Video signal searching method for a projection device and the projection device thereof | |
| CN102375637B (en) | Display device and method, drive circuit and electronic equipment | |
| CN202093501U (en) | Multi-frame combination preview contact control device for seamless switcher | |
| CN101373589A (en) | Display control method used in a display apparatus, and display apparatus | |
| CN104750301A (en) | Touch sensing system | |
| CN102736789A (en) | Display, method of driving same, drive circuit, and electronic unit | |
| KR20020038292A (en) | An apparatus for detecting a DVI connector in a digital video signal display system | |
| KR950020081A (en) | Wired / Wireless Trackball Mouse Device for Portable Computers | |
| CN103489426A (en) | Method for switching displayer resolution | |
| CN104076907A (en) | Control method, control device and wearable electronic equipment | |
| CN101261824A (en) | Display apparatus for displaying input video through various connector | |
| US8427392B2 (en) | Circuit for detecting an external display device adapted to notebook computer and detecting method thereof | |
| CN105093027A (en) | Multifunctional test instrument and multifunctional test test method | |
| JP2007225980A (en) | Processing device having monitor connection means and method for detecting monitor | |
| CN212160647U (en) | Display for controlling multiple hosts | |
| CN105426040A (en) | Method and system for rapidly displaying interface contents of mobile terminals | |
| CN211181609U (en) | Intelligent terminal dual-mode L CD drive board circuit | |
| CN100505032C (en) | Display device starting-up control method and device | |
| CN101853147B (en) | Circuit and detection method for detecting external display device in laptop | |
| KR20180003973A (en) | Touch circuit, touch display device and method for driving the touch display device | |
| CN114694326A (en) | Extended display equipment of face payment equipment and face payment system | |
| CN111949584B (en) | Hub device, display apparatus, and operation method thereof | |
| CN110381280A (en) | Electronic device and display system with display unit | |
| CN217880809U (en) | Device capable of universally testing assembly screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |