KR100481491B1 - Controll method of screen saver - Google Patents

Abstract

The present invention relates to a method of controlling a screen saver function that allows the screen saver function set in the PC to be automatically released when the projector is connected to the PC.

The present invention automatically recognizes the projector connection from the PC when the PC is connected to the projector, and automatically releases the screen saver function set in the PC when the projector is connected to the PC. It automatically disables the screen saver function when connected and uses, and automatically sets the screen saver function when the PC is disconnected from the projector.

Therefore, when the user connects the projector to the PC and tries to use it for presentation or other purposes, the inconvenience caused by setting the screen saver function on the PC can be easily solved. On or off can be easily implemented in software.

Description

Control method of screen saver {Controll method of screen saver}

The present invention relates to a method of automatically releasing a screen saver function set in a PC when the projector is connected to the PC and used as a monitor or a presentation display.

In general, a projector is a device that connects with an external device to enlarge and project a desired image on a screen on a large screen. As an example of the use of such a projector, it may be connected to a TV or a video player (VCR, DVD, etc.) to watch a video, or may be used as a PC monitor in connection with a PC. In most cases, the projector is connected to a PC and used for a monitor or presentation.

However, if the screen saver function is set in the PC when the projector is connected to the PC and used as a monitor substitute or a presentation, the screen saver function of the PC may be inconvenient during the presentation.

The screen saver function of the PC blocks the working screen when the user does not use the PC until a certain set time (screen saver set time) elapses, and switches to the screen that replaces the screen. It's a kind of passive secrecy that prevents people from seeing the content visually.

However, when the PC screen saver function is set, the screen saver function may be inconvenient even when the projector is connected to the PC and used for a monitor or a presentation as described above. .

For example, suppose the user has set the screen saver function to 1 minute. Suppose that you connect a PC to the projector and conduct seminars for presentations. In this case, the seminar data image prepared on the PC is displayed through the projector. If the switching to another data image or the key operation is not performed for the PC for 1 minute, the PC is set as the screen saver setting time. After 1 minute has elapsed, the user is mistaken for not using the PC, thus blocking the current video being displayed through the projector and returning to the preset screen saver screen (black screen or preselected third video screen). Will be converted. This is very difficult for the user because the user is converted to an unexpected screen protection image during use even though the data image must be displayed. Therefore, in such a case, the user must repeat the operation of returning to the data image by operating the PC again, or deactivate the screen saver function by operating the PC. In addition, the screen saver function needs to be set again after the presentation is finished.

Figure 1 shows a method of performing a presentation using a PC and a projector in general.

Referring to Figure 1 looks at a conventional PC-projector connection method.

First, after connecting the projector and the PC, the PC and the projector are turned on or the projector is connected to the PC after the projector is turned on (S11 and S12).

Next, the presentation display through the projector is performed using the data image of the PC. At this time, when the PC screen saver setting time elapses, the screen saver function of the PC operates as described above (S13 and S14).

As such, when the screen saver function of the PC is operated, the screen is switched from the original data image to the protected screen, so that the user stops the presentation work (S15) and directly operates the PC to release the screen saver function ( S16). After disabling the screen saver function of the PC, the operation is continued (S17). Later, when the presentation display is finished, the user must set up the screen saver function of the PC again to achieve the purpose of screen protection as originally intended.

Therefore, when the screen saver function is operated when the projector is connected to a PC, the presentation cannot be continued and the work is interrupted. In addition, in the related art, the user may change the password to directly cancel the screen saver function. There is an inconvenience of having to enter it and only continue using it after that process.

In addition, after the projector is disconnected from the PC, the screen saver function, which was originally set in the PC, needs to be set again.

An object of the present invention is to automatically recognize the projector from the PC when the projector is connected to the PC, and to automatically release the screen saver function set in the PC when the projector is recognized, the PC if the projector is separated from the PC By resetting the screen saver function in the camera to the original state, it eliminates the above-mentioned inconvenience of connecting the projector to a PC and using it for a monitor or presentation, and automatically controls the screen saver release and setting. To provide a way to control the screen saver function.

The screen saver function control method of the present invention for achieving the above object, when using a connection between the PC and the projector having a memory, it reads the DDC data from the memory and whether or not the connection between the PC and the projector depending on whether there is data And determining, by the controller, releasing or resetting the preset screen saver function according to the determination result.

Preferably, determining whether the PC is connected to the projector comprises loading the preset screen saver function release program, and determining that the PC is connected to the projector when the DDC data is read from the memory. More preferably, the determining whether the PC is connected to the projector comprises determining that the PC is connected to the projector when the DDC data is read from the memory, and loading the preset screen saver function release program. It is characterized by its steps.

More preferably, according to the determination result, the controlling of the release or return of the preset screen saver function may include: automatically releasing the preset screen saver function when the projector and the PC are connected as a result of the determination, and determining the projector. And when the PC and the PC are separated, controlling the preset screen saver function to be restored. More preferably, the step of determining whether the PC and the projector are connected is performed when the DDC data is read from the memory. And it is determined that the projector is connected, and if the DDC data is not read, determining that the PC and the projector are separated.

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Hereinafter, a method of controlling a screen saver function according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a block diagram schematically illustrating an internal configuration and a connection state of a PC and a projector to which the present invention is applied. . The PC 21 storing various information such as the user's data image and the projector 22 for displaying the same are connected with a predetermined communication cable.

The PC 21 includes a power supply unit 23 for supplying power, a memory 24 for loading a screen saver function setting or canceling program, and a microcomputer 25 for controlling and processing setting and canceling the screen saver function. Doing. The projector 22 includes a power supply unit 26 for supplying power, a memory 28 for storing DDC data to implement a DDC function, and a microcomputer 27 for processing and controlling display signals.

Figure 3 shows the control procedure according to the first embodiment of the screen saver function control method of the present invention. 2 and 3, a screen saver function control process according to the first embodiment of the present invention will be described.

First, the PC 21 and the projector 22 are connected to each other and a preparation step of turning on the power (S31). Accordingly, the PC power is supplied from the power supply unit 23 of the PC 21, the power supply of the projector is supplied from the power supply unit 26 of the projector 22, and each device is prepared in an operable state. The power on step turns on the power of each device after connecting the PC and the projector, or connects the PC and the projector with the power of each device turned on, or naturally depending on the user's personal preference or the surrounding situation. The above procedure will not be a fixed fixed procedure since it will be done.

When the PC 21 and the projector 22 are ready for use, the microcomputer 25 in the PC 21 loads the screen saver function release program prepared in advance into the memory 24 (S32). The microcomputer 25 of the PC 21 executes whether to control the screen saver function depending on whether the projector and the PC are connected. That is, if the projector 22 and the PC 21 are connected to each other in step S33, the microcomputer 25 reads the DDC data of the memory 28 of the projector 22 so that the projector 22 may access the PC 21. The connection is recognized and determined (S34).

If it is recognized that the projector 22 is connected to the PC 21 (S34), the microcomputer 25 releases the screen saver function of the PC according to the screen saver function cancel program loaded in the memory 24 (S35a). However, when the projector 22 is not recognized by the PC 21 because the projector 22 and the PC 21 are not connected, the microcomputer 25 maintains and operates the screen saver function of the PC as it is (S35b). This step (S35b) consequently connects the PC and the projector and when the use is terminated, the power of the projector 22 is turned off or when the projector 22 and the PC 21 are disconnected. This is the process of resetting (resetting) the screen saver function originally set in.

As such, when the PC is connected to the projector and used, the PC automatically recognizes the projector and releases the screen saver function, thereby eliminating inconvenience caused by unnecessary operation of the screen saver function during the use of the presentation display. Also, after the use of the projector is terminated, the screen saver function is returned to its original state (reset), thereby eliminating the inconvenience of having to reset the screen saver function after use.

4 shows a control procedure according to the second embodiment of the screen saver function control method of the present invention. In the second embodiment of the present invention of Fig. 4, the screen saver function is controlled in the procedure of loading the screen saver function release program after the PC 21 and the projector 22 are connected to each other. different.

 Referring to Figures 2 and 4 will be described a screen saver function control process according to a first embodiment of the present invention.

First, the PC 21 and the projector 22 are connected to each other, and a preparation step of turning on the power (S41). Accordingly, the PC power is supplied from the power supply unit 23 of the PC 21, the power supply of the projector is supplied from the power supply unit 26 of the projector 22, and each device is prepared in an operable state. The power on step turns on the power of each device after connecting the PC and the projector, or connects the PC and the projector with the power of each device turned on, or naturally depending on the user's personal preference or the surrounding situation. The above procedure will not be a fixed fixed procedure since it will be done.

Next, the microcomputer 25 of the PC 21 executes program loading and screen saver function control depending on whether the projector and the PC are connected to each other.

That is, if it is determined in step S42 that the projector and the PC are connected to each other and connected to each other, then in step S43, the microcomputer 25 in the PC 21 stores the screen saver function release program prepared in advance in the memory 24. Load on (S43). The microcomputer 25 reads the DDC data of the memory 28 of the projector 22 to recognize and determine whether the projector 22 is connected to the PC 21 (S44).

If it is recognized that the projector 22 is connected to the PC 21 (S34), the microcomputer 25 releases the screen saver function of the PC according to the screen saver function cancel program loaded in the memory 24 (S45a). However, if the projector 22 and the PC 21 are not connected and the projector 22 is not recognized by the PC 21, the microcomputer 25 will retain the screen saver function of the PC without loading the screen saver function release program. Hold and operate (S45b). This step (S45b) consequently connects the PC and the projector and when the use is terminated, the power of the projector 22 is turned off or when the projector 22 and the PC 21 are disconnected. This is the process of resetting (resetting) the screen saver function originally set in.

As such, when the PC and the projector are connected and used, the PC automatically recognizes the projector and releases the screen saver function. Therefore, inconvenience caused by unnecessary operation of the screen saver function will be eliminated. Since the screen saver function returns to its original state (reset), the inconvenience of having to reset the screen saver function after use is naturally eliminated.

As described above, when the user connects the projector to the PC and attempts to use it for the monitor or the presentation, the user is not inconvenienced by the operation of the screen saver during the operation because the screen saver function of the PC is set. It eliminates the effects of improving work efficiency.

Another effect is that it is economical in terms of cost because it can be easily implemented in software rather than requiring a separate device to turn on or off screen protection.

1 is a flowchart generally illustrating a method of performing a presentation using a PC and a projector.

Fig. 2 is a block diagram showing a schematic configuration and connection state of a PC and a projector for performing screen saver function control of the present invention.

3 is a flowchart of a first embodiment of a method of controlling a screen saver function of the present invention;

4 is a flowchart of a second embodiment of a method of controlling a screen saver function of the present invention;

<Description of the symbols for the main parts of the drawings>

21: PC 22: Projector

23,26: power supply 24,28: memory

25,27: Micom

Claims (5)

When connecting the projector with a PC with memory, Reading DDC data from the memory to determine whether the PC is connected to the projector according to whether data exists; And, And controlling to release or return the preset screen saver function according to the determination result. The method of claim 1, Determining whether the PC is connected to the projector And loading the preset screen saver function release program, and determining that the PC and the projector are connected when the DDC data is read from the memory. The method of claim 1, Determining whether the PC is connected to the projector And determining that the PC and the projector are connected when the DDC data is read from the memory, and loading the preset screen saver function release program. The method of claim 1, Controlling the release or return to the predetermined screen saver function according to the determination result And when the projector and the PC are connected as a result of the determination, automatically canceling the preset screen saver function, and when the projector and the PC are disconnected, controlling the preset screen saver function to be restored. How to control screen saver function. The method of claim 1, Determining whether the PC is connected to the projector And determining that the PC and the projector are connected when the DDC data is read from the memory, and determining that the PC and the projector are separated when the DDC data is not read.