KR20090083997A - Projector connectable screen and method of controlling the same - Google Patents

Projector connectable screen and method of controlling the same Download PDF

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Publication number
KR20090083997A
KR20090083997A KR1020080009905A KR20080009905A KR20090083997A KR 20090083997 A KR20090083997 A KR 20090083997A KR 1020080009905 A KR1020080009905 A KR 1020080009905A KR 20080009905 A KR20080009905 A KR 20080009905A KR 20090083997 A KR20090083997 A KR 20090083997A
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KR
South Korea
Prior art keywords
screen
environment
blackboard
image
projector
Prior art date
Application number
KR1020080009905A
Other languages
Korean (ko)
Inventor
이상호
Original Assignee
엘지전자 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020080009905A priority Critical patent/KR20090083997A/en
Publication of KR20090083997A publication Critical patent/KR20090083997A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179—Video signal processing therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback

Abstract

A screen associated projector and a method of controlling the same are provided to detect whether a screen exists. A sensing unit(201) senses a signal transmitted according to a set state of a screen. The sensing unit detects whether it is a currently set screen environment or a blackboard environment based on a signal transmitted according to a setup change of the screen. An image processing unit(202) recognizes a setup state of the screen based on the signal detected through the detecting unit. The image processing unit selectively outputs an image on the screen by associating with the recognized setup state.

Description

Projector connectable screen and method of controlling the same}

The present invention relates to a projection type image display device, and in particular, when using the screen and the blackboard and the projector in an environment in which the screen and the blackboard alternately to control the projector according to the use according to the screen, the blackboard and the document recording device It can be recognized, stored and printed out.

In general, slides have been used for audio-visual education during lectures of corporate presentations and universities. However, since the slide must produce a film, it is difficult to produce the OHP (Over Head Project).

However, since the OHP also needs to copy the presentation contents to a transparent OHP paper using a copying machine and the like to pass through the light, it is cumbersome to copy each side when there are a lot of contents to be presented. There was discomfort to do.

Therefore, recently, a projection system has been widely used to create presentation materials in a computer using a computer program, and to connect the computer and the beam projector to output the created presentation data on a screen.

The beam projector outputs a screen displayed on a monitor such as a computer to the screen as it is, and the screen control includes a function of underlining or other display on the main part by using a mouse attached to the computer.

However, when using a beam projector such as lectures in a classroom or school, the screen is installed on the front of the blackboard to give a presentation using the beam projector, and if necessary, the screen is removed and the desired contents are recorded on the blackboard. It is common to provide additional supplementary explanations.

That is, the projection system according to the prior art has a glare caused by the light of the projector, the problem of having to rewrite the document recorded on the blackboard, or the lecture recorded on the blackboard through the screen when the blackboard is used after or during the presentation through the screen. There was a problem such as the need to remove the screen again if the contents were needed.

Accordingly, the present invention has been made to solve the above problems, and an object thereof is to provide a screen interlocking project that can detect the presence or absence of a screen.

In addition, the present invention has another object to be able to control the image output from the projector according to the screen and the blackboard environment where the projection system is installed.

In addition, the present invention has another object to be able to shoot and store the contents described on the blackboard as the image pickup apparatus that can capture the image to the projector.

A screen-linked projector according to the present invention includes a projector for projecting onto a screen by irradiating image data provided through an image providing unit with light, the projector comprising: a sensing unit for detecting a signal transmitted according to the setting state of the screen; And an image processing unit for recognizing a setting state of the screen based on the signal detected by the sensing unit, and selectively outputting the provided image on the screen in association with the recognized setting state.

In addition, the control method of the screen-linked projector according to the present invention is a control method of a projector for projecting on the screen by irradiating the image data provided through the image providing unit with light, detecting the signal transmitted according to the setting state of the screen Making; Recognizing a setting state of the screen based on the signal; And selectively outputting the image data on the screen in association with the recognized setting state.

In the screen-linked projector and its control method according to the present invention, if the user changes the current setting environment to the blackboard environment while projecting a specific image on the screen, the projector is automatically controlled to match the current setting environment without user's separate operation. In addition, it is possible to improve convenience and improve user satisfaction by photographing and storing contents recorded on a blackboard in a blackboard environment and projecting the stored contents on a screen.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest.

1 is a view showing the configuration of a projection system according to the present invention, Figure 2 is a view for explaining the operation of the screen-linked projector according to the present invention, Figure 3 is a step-by-step control method of the screen-linked projector according to the present invention This is a flowchart for explaining.

The projection system according to the present invention, as shown in Figure 1, the image providing unit 100 for providing the image data, and to project the image data provided on the screen by irradiating the light on the screen, in the setting state of the screen According to the projector 200 for selectively controlling the output of the image data, the transmitter 300 for transmitting a detection signal according to the setting state of the screen, and the blackboard 400 for recording the content desired by the user It is composed.

The image providing unit 100 provides a document or other data created by a user to the projector 200, and typically, a computer may be included therein.

The projector 200 projects the image data provided through the image providing unit 100 with light and projects the image onto a screen.

Since the operation of the projector is already known in the art, a detailed description thereof will be omitted.

The transmitter 300 detects a setting state of a screen for outputting an image projected through the projector 200 and transmits a corresponding detection signal accordingly.

Hereinafter, the projection system will be described in more detail with reference to the accompanying drawings.

First, although the screen-linked projector according to the present invention can be used even in an environment in which only a screen is installed, the environment in which the screen and the blackboard are installed together will be described for easier description of the present invention.

That is, when the screen and the blackboard are used alternately, in other words, the image output through the projector 200 is displayed on the screen or the setting environment is changed in the environment in which the user sets down the screen. > Blackboard) Explains a blackboard in which a specific content can be written on a blackboard, a projector in a screen-flowable environment.

First, the screen 301 includes a switch for changing the state of the screen and a transmitter 300 for transmitting a corresponding signal according to the operation of the switch.

The switch is a means for changing the setting state of the screen. When the switch is turned on as shown in FIG. 2, the screen is lowered to display an image on the screen. As the screen is raised, specific contents may be recorded on the chalkboard 400 located at the rear.

In other words, when the screen is lowered, an image projected by the projector 200 may be displayed on the screen, and when the screen is raised, a blackboard may be seen at the rear, and the user may record and describe the desired contents on the blackboard. .

The transmitter is a means for transmitting a detection signal according to the screen setting state according to the operation of the switch. When the screen is changed up or down and the setting state of the screen is changed, the signal according to the setting state is changed. To send.

In other words, a detection signal is transmitted according to whether the environment set by the current user is a screen environment or a blackboard environment.

Here, the screen environment refers to a state in which the state of the current screen is down so that an image projected through the projector can be displayed, and the chalkboard environment is used to display specific contents by the user through the blackboard that appears as the screen is up. It means the recordable state.

That is, in conclusion, the switch is a means for moving the screen up and down, and the transmitter transmits a detection signal according to the state of the screen changed through the switch.

In addition, the projector 200 receives a signal transmitted through the transmitter, recognizes a current screen state based on the received signal, and selectively outputs or blocks an image provided through the image provider 100. do.

That is, the projector 200 recognizes a setting state of the screen based on a detection unit 201 for detecting a signal transmitted according to the setting state of the screen, and a signal detected by the detection unit 201. And an image processing unit 202 for selectively blocking an image output on the screen in association with the recognized setting state, and photographing the contents recorded on the blackboard 400 at regular intervals based on the detected setting environment. And a storage unit 204 for storing the blackboard recording contents photographed by the photographing unit 203.

The detector 201 detects a signal transmitted from the transmitter 300. That is, a detection signal generated as the setting state of the screen is changed is received.

The image processor 202 recognizes the setting state of the screen detected by the sensing unit 201 and selectively selects image data provided through the image providing unit 100 in association with the recognized state of the screen. Output on the screen.

That is, when the current screen is installed according to the detection signal, that is, when the current setting environment is recognized as the screen environment, the image processing unit 202 irradiates the image data provided through the image providing unit 100 with light. Project on an installed screen.

In addition, the image processing unit 202 blocks the output of the image data provided through the image providing unit 100 when the current screen is released according to the detection signal, that is, when the current setting environment is a blackboard environment.

That is, if the current user has installed the screen, the image provided through the image providing unit 100 is output on the screen, the current user releases the screen, that is, the blackboard 400 is installed In order to block the output of the provided image data, the image provided through the image providing unit 100 may not be output to the outside.

In addition, the photographing unit 203 photographs the contents recorded by the user on the chalkboard 400 in the chalkboard environment.

That is, the user recognizes and records the contents recorded on the blackboard 400 in the blackboard environment, which may periodically photograph the contents recorded on the blackboard, or may be photographed at the user's request.

In addition, the blackboard recording contents photographed by the photographing unit 203 are recorded in the storage unit 204, and are output on the screen 301 according to a user request or a change in setting state.

That is, when the user changes the current setting environment from the blackboard environment to the screen environment, the stored blackboard recording contents may be extracted and output on the screen 301, in which the user writes on the blackboard 400 in the screen environment. When the output of the content is requested, data stored in the storage unit 204 may be output on the screen 301.

In addition, the contents stored in the storage unit 204 is transmitted to the image providing unit 100, and accordingly the contents recorded by the user to be stored in the image providing unit 100, the contents recorded by the user on the blackboard It can be managed without having to record it separately.

As described above, the screen-linked projector according to the present invention allows the projector to be automatically controlled according to the current setting environment without user manipulation when the user changes the current setting environment to the blackboard environment while projecting a specific image on the screen. In addition, the user's satisfaction is improved by photographing and storing the contents recorded on the blackboard in the blackboard environment and projecting the stored contents on the screen.

In the control method of the screen-linked projector according to the present invention configured as described above, as shown in FIG. 3, first, it is determined whether a power-on command of the projector is input from a user (S101).

Subsequently, when the power-on command of the projector is input, the determination result (S101) receives a detection signal according to the screen setting state transmitted from the outside to determine whether the current screen is detected (S102). That is, it is determined whether the currently set environment is a screen environment.

In operation S102, when the current screen is set, the image data provided through the image providing unit 100 is irradiated with light and projected onto the screen (S103).

Subsequently, it is determined whether a projector power-off command is input from the user (S104).

When the power-off command of the projector is input, the determination result (S104) ends. Otherwise, the process returns to step S102.

On the other hand, the determination result (S102) when the current screen is released, that is, the current setting environment is a blackboard environment, the output of the image data provided from the image providing unit is blocked (S105). That is, the image is blocked on the screen so that the image is not output to the outside from the projector.

Subsequently, the user drives the photographing unit 203 to photograph the contents recorded on the chalkboard in the chalkboard environment (S106).

Then, the user records the contents recorded on the blackboard based on the driven photographing unit, and stores the photographed blackboard recording contents in an internal storage medium (S107).

Subsequently, it is determined whether the setting state of the screen has been changed (S108). That is, it is determined whether the current screen is detected.

When the screen is detected, the determination result (S108) outputs a blackboard recording content of the projector image or the blackboard recording content recorded by the user in the blackboard environment (S109).

Subsequently, the photographed blackboard recording contents are transmitted to the external image providing unit 100 and the captured contents are stored in the image providing unit 100 (S110 to S111).

As described above, the screen-linked projector and the control method according to the present invention automatically control the projector to the current setting environment without the user's separate operation when the user changes the current setting environment to the blackboard environment while projecting a specific image on the screen. The user's convenience can be improved, and the user's satisfaction can be improved by photographing and storing contents recorded on the blackboard in the blackboard environment and projecting the stored contents on the screen.

1 is a view showing the configuration of a projection system according to the present invention.

2 is a view for explaining the operation of the screen-linked projector according to the present invention.

3 is a flowchart illustrating a step-by-step control method of the screen-linked projector according to the present invention.

<< Explanation of symbols for main part of drawing >>

100: video providing unit

200: projector 201: detector

202: image processing unit 203: photographing unit

204: storage unit

300: transmitter 301: screen

400: blackboard

Claims (11)

In the projector for projecting on the screen by irradiating the image data provided through the image providing unit with light, A detector for detecting a signal transmitted according to the setting state of the screen; And, And an image processing unit for recognizing a setting state of the screen based on the signal sensed by the sensing unit, and selectively outputting the provided image on the screen in association with the recognized setting state. Screen-linked projector. The method of claim 1, And the sensing unit detects whether the currently set environment is a screen environment or a blackboard environment based on a signal transmitted according to the setting change of the screen. The method of claim 2, And the image processing unit outputs the image data on the screen when the currently set environment is a screen environment, and blocks the output of the image data when the set environment is a blackboard environment. The method of claim 2, And a photographing unit configured to photograph the contents recorded on the blackboard at regular intervals based on the detected setting environment. The method of claim 4, wherein And a storage unit for storing the blackboard recording contents photographed through the photographing unit. The method of claim 5, And the image processor continuously recognizes the screen setting state, and optionally outputs the blackboard record contents previously stored in the storage unit on the screen. In the control method of the projector for projecting on the screen by irradiating the image data provided through the image providing unit with light, Detecting an outgoing signal according to a setting state of the screen; Recognizing a setting state of the screen based on the signal; And, And selectively outputting the image data on the screen in association with the recognized setting state. The method of claim 7, wherein Recognizing the setting state of the screen And recognizing whether the currently set environment is a screen environment or a blackboard environment based on a signal transmitted according to the setting change of the screen. The method of claim 8, Selectively outputting the image data on the screen Outputting the image data on the screen if the recognized setting environment is a screen environment; If the recognized setting environment is a blackboard environment, controlling the output of the image data. The method of claim 8, And photographing and storing the contents recorded on the blackboard at predetermined intervals based on the detected setting environment. The method of claim 10, And periodically recognizing whether or not the screen setting state is changed and outputting the stored blackboard recording contents on the screen.
KR1020080009905A 2008-01-31 2008-01-31 Projector connectable screen and method of controlling the same KR20090083997A (en)

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KR1020080009905A KR20090083997A (en) 2008-01-31 2008-01-31 Projector connectable screen and method of controlling the same

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Application Number Priority Date Filing Date Title
KR1020080009905A KR20090083997A (en) 2008-01-31 2008-01-31 Projector connectable screen and method of controlling the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101287019B1 (en) * 2012-01-05 2013-07-17 순천향대학교 산학협력단 A lecture camera system for providing images of writings on the board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101287019B1 (en) * 2012-01-05 2013-07-17 순천향대학교 산학협력단 A lecture camera system for providing images of writings on the board

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