CN1549049A

CN1549049A - Electric source controlling apparatus and method for projector

Info

Publication number: CN1549049A
Application number: CNA031333095A
Authority: CN
Inventors: 朴奎炫
Original assignee: LG Electronics Shenyang Inc
Current assignee: LG Electronics Shenyang Inc
Priority date: 2003-05-19
Filing date: 2003-05-19
Publication date: 2004-11-24

Abstract

The present invention is power source controlling device and method for projector. The control method includes the following steps: displaying the option mode in screen display after the power source is provided to the projector; performing the operation of power source cut-off preventing mode after the first mode is selected; judging whether there is some input signal after the user ends operation and turns off PC safely and turning off the projector; determining the state of the corresponding image equipment connected to the projector after the second mode to end operation is selected and shutting off safely based on the result of the determination. The present invention has the advantage of safe off of PC without negative effect form shutting off the projector.

Description

The power control of projector and method

Technical field

The present invention relates to projector, especially a kind of power control of projector and method.

Background technology

Recently, along with the PC availability constantly increases, the equipment that may be connected with PC constantly is developed.Wherein, the demand of utilizing PC Presentation Function equipment is constantly increased.When realizing that picture shows,,, and roll up with the display of projection type or the situation of utilizing projector to show in the ordinary course of things now without CRT monitor in order to realize that to transmit the information effective means big picture shows.

Simultaneously, the usable range of projector, come branch can divide two classes from broad aspect: a class is to be used for audiovisual TV and video; Another kind of is to be used for linking to each other with PC realizing Projection Display.To linking to each other with PC as situation about showing, if notebook computer, then main frame becomes as a whole with display; But if during general PC, because it does not have display, so can be with projector as substituting display.

With reference to the accompanying drawings prior art projector power control method is elaborated.

Fig. 1 is the process flow diagram of conventional art projector power control method.

Prior art projector power control method with reference to Fig. 1 as can be seen, judges at first whether projector is provided power supply (S1).

Simultaneously, after the operation that the user feels like doing is finished, judge whether the projector power supply is cut off (S2～S3).

Then, according to above-mentioned judged result (S3),,, cut off projector power supply (S4～S5) more so earlier the PC safety shutdown if the projector power supply is not cut off earlier.

On the one hand, according to above-mentioned judged result (S3),, judge so whether PC is forced to shutdown (S6) if the projector power supply is cut off earlier.

Then, according to above-mentioned judged result (S6),, reclose projector (S7) so if PC is not forced to shutdown.

Then, after the PC safety shutdown, cut off projector power supply (S8～S9) again.

As mentioned above, prior art projector power control method is connected with PC when using in the ordinary course of things, and after user's end operation, general projector occurs more than the situation that PC closes earlier.For the monolithic devices notebook computer, promptly be to close the projector power supply earlier, also can determine the state of notebook computer by the display that notebook computer carries, and realize safety shutdown.

But for situation about generally linking to each other with PC, if close projector earlier, then the user can't determine that the state of PC and PC can not safety shutdowns, may cause harmful effect to PC.

As above-mentioned, there are the following problems for the conventional art projector.

The first, to the general situation that links to each other with PC and use,, then can't determine the PC state if close projector earlier, can not cause harmful effect by the situation of safety shutdown and to PC so PC may occur.

The second, for making the PC safety shutdown, must reclose projector and determine and close PC behind the PC state, then close projector, thereby bring inconvenience to the user.

Summary of the invention

Technical matters to be solved by this invention provides a kind of power control and method of projector, and the pattern that concrete condition that it can link to each other with peripheral hardware according to the projector product and user select provides control projector electric power on/off.

The present invention is achieved in that the power control of projector of the present invention, link to each other with PC or external unit and the projector of output image signal in, form by following part: be the power supply unit of projector supply power; For making the user select desirable pattern, the OSD handling part of selecting picture to show pattern with screen display (OSD) form; With reference to the OSD handling part, the microprocessor that the pattern control power supply unit of selecting according to the user moves; Can judge information and no signal according to the pattern that the user selects, and the storage part that is provided with for the information of memory certain hour.

Projector power control method of the present invention is exactly the also projector power control method of output image signal that links to each other with PC or external unit, comprise following phases: the user connects the projector power supply, selects the stage of picture with screen display (OSD) form display mode; Screen display (OSD) with reference to having shown when the user selects first pattern, then starts the stage that the projector dump prevents pattern; Behind user's end operation and the PC safety shutdown, judge whether to exist input signal according to the rules in the time, and the stage that the control projector cuts out; If the user selects second pattern and end operation, the stage of safety shutdown after the respective image equipment state of then determining to link to each other with projector.

Advantageous effect of the present invention: the power control of projector and method according to the present invention, external unit is PC if link to each other with projector, then prevent that by starting the projector dump pattern from can make the PC safety shutdown, then with the projector power-off, thereby removed dysgenic effect in advance to PC.

Description of drawings

Fig. 1 is the process flow diagram of the power control method of conventional art projector;

Fig. 2 is the calcspar of the power control of projector of the present invention;

Fig. 3 is the process flow diagram of the power control method of projector of the present invention;

Fig. 4 is the synoptic diagram of model selection screen display (OSD) picture.

10:PC among the figure; 20: microprocessor; The 30:OSD handling part; 40: storage part; 50: power supply unit.

Embodiment

Power control and method to projector of the present invention is explained as follows with reference to the accompanying drawings.

Fig. 2 is the calcspar of the power control of projector of the present invention.Fig. 3 is the process flow diagram of the power control method of projector of the present invention.

According to the power control of projector of the present invention, as shown in Figure 2, it is by constituting with the lower part: PC/ notebook computer 10; For supplying with the power supply unit 50 that projector is provided with; For making the user select the pattern of wishing, with the OSD handling part 30 of screen display (OSD) form display action model selection picture; With reference to OSD handling part 30 and the pattern selected according to the user, the microprocessor 20 of control power supply unit 50 actions; Can be according to the pattern of user's selection, the formations that included such as storage part 40 judgement information and no signal and that be provided with for the information of remembering certain hour.

By the projector power control that each part mentioned above constitutes,, in microprocessor 20, control the lock function of power supply unit 50 in OSD according to the pattern that the user selects; And, behind the PC10 safety shutdown, judged whether that signal is input to projector; Do not have input signal within a certain period of time if be judged as, then control power supply unit 50 and close automatically.

The projector power control method of the present invention's design is explained as follows with reference to accompanying drawing 3.At first, connect the projector power supply, select picture (S11～S12) with screen display (OSD) form display mode.

Then, the user judges whether to have selected first pattern (S13) with reference to the model selection picture that has shown.

Here, first pattern is the state model that projector links to each other with general PC.

According to top judged result (S13),, then start dump and prevent pattern (S14) if the user selects first pattern.

Simultaneously, judge whether user's operation finishes (S15).

Then, according to above-mentioned judged result (S15), if user's EO is judged whether normal safety shutdown (S16) of the PC that links to each other with projector so.

According to judged result (S16), whether if normally shutdown safely of PC, then judging does not have signal input (S17) at the appointed time again.

Above-mentioned judged result does not have the signal input again, then closes projector (S18) automatically.

On the one hand, according to above-mentioned judged result (S16),, then turn back to and prevent the projector dump mode initialization stage (S14) if PC does not have safety shutdown.

Simultaneously, if PC safety shutdown and signal input is arranged at the appointed time, then projector operate as normal (S19).

Projector judges in normal work period whether the user uses manual-lock (S20).

Then, according to above-mentioned judged result (S20), if user's manual-lock of no use then judges whether to exist signal input (S21).

According to judged result (S21), if there is no signal input, then projector will cut out (S22) automatically.

On the one hand, according to above-mentioned judged result (S13), the user does not select first pattern, judges whether to select second pattern (S23) so.

Here, second pattern is the state model that projector links to each other with notebook computer.

Then, according to judged result (S23), if the user selects the 2nd pattern, then whether decision operation finishes (S24).

According to judged result (S24),, then confirm notebook computer state and safety shutdown (S25) if projector cuts out.

As above-mentioned, the user connects the projector power supply, at first is shown as screen display (OSD) picture of first pattern of selection, as shown in Figure 3.If the user selects first pattern with reference to Fig. 3, then start the lock function that prevents the projector dump.

User's end operation if close projector, then starts lock function projector can not cut out earlier; In case if the PC safety shutdown judges whether to exist the signal input within a certain period of time, there is not the signal input in judged result, then projector cuts out automatically.

If the PC safety shutdown, but exist from the signal of other signal source input, then lock function will be disengaged.At this moment can be according to user's requirement manual-lock; There is not the signal input fully in judged result, and projector cuts out automatically.

On the one hand, the user is selected the situation of second pattern, because of receiving picture signal by TV or video, perhaps receive from the pattern of notebook computer input signal, so promptly be to close projector, also discern the state of TV, video and notebook computer easily, thereby realize safety shutdown.

Claims

1, the power control of projector and method is characterized in that the power control of projector is made up of following part: the power supply unit that power supply is provided for projector; For making the user select desirable pattern, with the OSD handling part of screen display (OSD) form display action model selection picture; With reference to the OSD handling part, according to the pattern that the user selects, the microprocessor of control power supply unit action; The pattern of selecting according to the user, the storage part that can judge whether to exist the canned data in the certain hour of information and no signal to be provided with for storage.

2, the power control of projector and method is characterized in that the power control method of projector, and it comprised with the next stage: the user connects the projector power supply, select the stage of picture with screen display form display mode; With reference to the screen display that has shown,, start the stage that the projector dump prevents pattern if the user selects first pattern; If user's EO and PC safety shutdown judge whether there is the signal input at the appointed time, projector is carried out the stage of closing control; If the user selects second pattern and end operation, then according to stage of the respective image equipment state realization safety shutdown of determining to link to each other with projector.

3,, it is characterized in that first pattern is the pattern that projector links to each other with general PC according to the power control and the method for the described projector of claim 2; The 2nd pattern is the pattern that projector links to each other with notebook computer.

4, according to the power control and the method for the described projector of claim 2, it is characterized in that controlling the stage that projector cuts out and be: do not have the signal input at the appointed time, projector is in automatic dwell period; Have the signal input at the appointed time, projector is in the regular event stage; When the projector regular event, if do not form manual-lock, then according to whether existing the signal input to close the stage of projector automatically.

5, according to the power control and the method for the described projector of claim 4, it is characterized in that the above-mentioned projector regular event stage, be to be in to remove the stage that the projector dump prevents pattern.