KR101844231B1 - IMAGE PROCESSING SYSTEM and METHOD OF PROCESSING AN IMAGE THEREOF - Google Patents

Abstract

In this specification, a projection system and an image processing method thereof are disclosed. Here, the image processing system according to the present invention includes: an image projection device for projecting an image; PDLC screen with PDLC film on screen; A power supply unit electrically connected to the PDLC film to supply power; And controlling the PDLC film to be in a first state by supplying power to the PDLC film and controlling the PDLC film to be in a second state by interrupting the power supply, And a controller for performing control to be performed at a predefined predetermined period.

Description

[0001] IMAGE PROCESSING SYSTEM AND METHOD OF PROCESSING AN IMAGE THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing system, and more particularly, to a method of processing an image through a PDLC screen having PDLC (Polymer Dispersed Liquid Crystal Panel) .

In recent years, a large screen, high-definition display device has emerged as one of the important issues. Up to now, such a large-screen display device has been developed and commercialized as a direct-type liquid crystal display, a plasma display, a projection TV and a projector.

A projector is a display device for enlarging an image and enlarging and projecting the image on a screen. Recently, beam projectors have been spreading to replace LCD TVs. In addition, beam projectors are being used for movie screening, digital photo projection, enterprise and educational presentations, video games, and the like. The projector includes a device called an optical engine. In the optical engine, a display device such as a CRT (Cathode Ray Tube), a LCD (Liquid Crystal Display), and a DMD (Digital Micro mirror Device) do.

These projectors adjust the brightness and contrast of the red, green, and blue colors of the input image and project them on the screen.

However, in the conventional projector, it is common to project an image on an opaque screen, so that when the image is projected onto a transparent screen, the user is hard to recognize the projected image. Recently, a head-up display has been introduced, but it is expensive, and there is a fixed position projector for projecting an image in a fixed area, and only a predetermined service is provided, which is also a problem in general use.

The present invention has been conceived to solve the above-described problems, and it is an object of the present invention to provide a PDLC film, which can be attached to a screen of a digital device or a non-digital device by using an image projecting device Overlaying and outputting the data.

Another object of the present invention is to provide a PDLC screen or an image projection apparatus so as to be intuitively recognizable by controlling an overlaid image according to ambient illumination or various situations.

Another object of the present invention is to apply a PDLC screen to a vehicle or a wearable device to easily implement a head-up display or a seed-through display and to apply the PDLC screen to various fields.

The technical problem to be solved by the present invention is not limited to the above-described technical problems and other technical problems which are not mentioned can be clearly understood by those skilled in the art from the following description .

In order to accomplish the above object, the present disclosure describes a projection system and an image processing method thereof.

Here, the image processing system according to the present invention includes: an image projection device for projecting an image; PDLC screen with PDLC film on screen; A power supply unit electrically connected to the PDLC film to supply power; And controlling the PDLC film to be in a first state by supplying power to the PDLC film and controlling the PDLC film to be in a second state by interrupting the power supply, And a controller for performing control to be performed at a predefined predetermined period.

A method of processing an image in an image processing system according to an embodiment of the present invention, the method comprising: receiving a projected image; Controlling the switching operation of the power supply and the power supply cutoff to continue at a predefined predetermined period; And outputting the received image on a PDLC screen having a PDLC film attached thereto on a screen, the PDLC film switching and repeating switching between a first state and a second state according to the switching operation.

The technical solutions obtained by the present invention are not limited to the above-mentioned solutions, and other solutions not mentioned are clearly described to those skilled in the art from the following description. It can be understood.

According to the present invention, there are the following effects.

According to one embodiment of the present invention, a PDLC film is overlaid on a screen of a digital device or a non-digital device so as to project an image projected through an image projection device onto an original viewable screen through a screen There is an effect that can output.

According to another embodiment of the present invention, an overlaid image can be intuitively recognized by controlling a PDLC screen or an image projection apparatus according to ambient illumination or various situations.

According to another embodiment of the present invention, there is an effect that the PDLC screen can be applied to various fields such as attaching the PDLC screen to a vehicle or a wearable device to easily implement a head-up display or a cue-through display.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a block diagram of a projector according to an embodiment of the present invention;
2 is a block diagram of a laser projector having a reflection type polarization conversion unit according to an embodiment of the present invention;
3 is a diagram illustrating an image processing system according to an embodiment of the present invention;
4 is a diagram illustrating a first state and a second state of a PDLC screen according to an embodiment of the present invention;
5 is a diagram illustrating a PDLC screen for outputting an overlay image according to the present invention;
6 to 7 are diagrams for explaining a case where a PDLC screen is attached to a head-up display for a vehicle according to an embodiment of the present invention;
8 to 9 are diagrams for explaining a case where a PDLC screen is attached to a screen of a wearable device according to an embodiment of the present invention; And
FIG. 10 is a view for explaining an image processing method according to an embodiment of the present invention.

Hereinafter, various embodiments (s) of a projector and an image processing method in the projector according to the present invention will be described in detail with reference to the drawings. Herein, with reference to the accompanying drawings, it is to be noted that, in spite of a predetermined distance between a projector and a screen, an advanced zoom function which is superior to a conventional projector is provided, Thereby providing the advanced zoom function and minimizing degradation such as resolution or sharpness. Further, an advanced zoom function is provided while minimizing the deterioration of the resolution, sharpness, and the like, thereby improving the usability of the user and the product satisfaction with the projector.

The suffix "module "," part ", and the like for components used in the present specification are given only for ease of specification, and both may be used as needed. Also, even when described in ordinal numbers such as " 1st ", "2nd ", and the like, it is not limited to such terms or ordinal numbers.

In addition, although the terms used in the present specification have been selected from the general terms that are widely used in the present invention in consideration of the functions according to the technical idea of the present invention, they are not limited to the intentions or customs of the artisan skilled in the art, It can be different. However, in certain cases, some terms are arbitrarily selected by the applicant, which will be described in the related description section. Accordingly, it should be understood that the term is to be interpreted based not only on its name but on its practical meaning as well as on the contents described throughout this specification.

It is to be noted that the contents of the present specification and / or drawings are not intended to limit the scope of the present invention.

The "projector" described in the present specification is a display device for magnifying and projecting an image on a screen, and can be used as a concept including all digital devices that illustrate a projector but can output an image to the outside.

In addition, the term " image " as used herein may mean only a still image, as well as a moving image.

1 is a block diagram of a projector according to an embodiment of the present invention.

1, a projector 100 according to the present invention includes a light source 111 including a light source 111, a first condenser lens 112 and a collimating lens 113, a dichroic mirror 121a, And an illumination optical system 120 including an integrator 124 and an illumination lens 125. The illumination optical system 120 includes a first condensing lens 122a, a second condensing lens 122b, first and second reflecting surfaces 123a and 123b, And a projection optical system 130 including a display element 132 and a projection lens 133. [

Of course, the projector 100 according to the present invention may include components other than the above-described components as needed. However, since components other than the components described above are not directly related to the present invention, A detailed description thereof will be omitted below.

On the other hand, it should be noted that when the components are implemented in a practical application, two or more components may be integrated into one component as needed, or one component may be divided into two or more components.

Here, the projector according to the present invention receives image data from an external device connected via a wired / wireless network.

At this time, the external device can be viewed as a server in view of providing image data to be output to the projector according to the present invention. Such a server can be used, for example, as a concept that includes all digital devices that transmit data, content, services, applications, and the like. Such servers include, for example, a standing device such as a Network TV, a Hybrid Broadcast Broadband TV, a Smart TV, an Internet Protocol TV (IPTV), a Personal Computer , A PDA (Personal Digital Assistant), a smart phone, a tablet PC, a notebook, and the like. The server may be a game device such as a high-definition multimedia interface (HDMI), a playstation or an X-box, a smart phone, a tablet PC, a pocket photo, Such as a printer, a smart TV, a Blu-ray device, and the like.

Meanwhile, a wired / wireless network for connection and data transmission / reception between the projector and the server includes a concept that collectively refers to a communication network supporting various communication standards or protocols for pairing and / or data transmission / reception between the projector and the server to be. Such a wired / wireless network includes all of the communication networks to be supported by the standard now or in the future, and is capable of supporting one or more communication protocols therefor. Such a wired / wireless network includes, for example, a USB (Universal Serial Bus), a Composite Video Banking Sync (CVBS), a Component, an S-Video (Analog), a DVI (Digital Visual Interface) A communication standard or protocol for a wired connection such as an RGB or a D-SUB, a Bluetooth standard, a radio frequency identification (RFID), an infrared data association (IrDA), an ultra wideband (UWB) (ZigBee), DLNA (Digital Living Network Alliance), WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) A long term evolution (LTE-Advanced), and Wi-Fi direct, and a communication standard or protocol for the network.

Hereinafter, the components of the projector 100 according to the present invention will be described in more detail as follows.

The light source 111 of the light source unit 110 generates and emits red (R), green (G), and blue (B) light as an LED. Of course, the projector 100 according to the present invention may be configured as a light source 111 as well as a lamp or a laser as well as the LED.

The first condenser lens 112 of the light source 110 condenses the light emitted from the light source 111. The condenser lens 112 is made of glass or plastic, and has at least one shape of meniscus spherical, elliptical and aspherical shapes.

The collimating lens 113 of the light source unit 110 converts the light condensed by the first condenser lens 112 into parallel light. 1, the light source 111 is attached to a PCB (Printed Circuit Board) formed on a first surface of a heat sink, and the first condenser lens 112 and the collimating lens (113) are fixed by fixing members coupled to both sides of the first surface of the heat sink.

The structure of the light source unit 110 including the fixing member will be described later in detail.

The dichroic mirrors 121a and 121b of the illumination optical system 120 are mirrors capable of selectively reflecting or transmitting only light having a specific wavelength to obtain light of a desired wavelength band, and usually use interference of light.

The dichroic mirrors 121a and 121b are arranged such that the first dichroic mirror 121a is located at a position where the blue (B) light and the red (R) light intersect, And the second dichroic mirror 121b may be positioned at a position where the red (R) light intersects.

At this time, the first dichroic mirror 121a transmits blue (B) light and reflects green (G) light and red (R) light.

On the other hand, the second dichroic mirror 121b can reflect green (G) light and transmit red (R) light.

As described above, the red (R) light, the green (110b) light, and the blue (110c) light are synthesized by passing through the two dichroic mirrors 121a and 122b and synthesized into light of various colors according to an image to be formed .

The second condenser lens 122 of the illumination optical system 120 condenses again the light synthesized by the two dichroic mirrors 121a and 121b. The second condenser lens 122 may be included in the light source unit 110 according to the structure of the projector 100 according to the present invention.

The integrator 124 of the illumination optical system 120 receives the light passing through the second condenser lens 122 through the first reflection surface 123a and shapes the light into a shape having a uniform luminous intensity.

The integrator 124 may be a light tunnel consisting of rod-shaped rod lenses or box-shaped mirrors, a funnel, a trapezoidal optical funnel, or the like.

According to the structure of the projector 100 according to the present invention, a fly-eye lens may be provided in place of the integrator 124. [ In this case, the second condenser lens 122 is omitted.

The illumination lens 125 of the illumination optical system 120 reflects the light having passed through the integrator 124 to the projection optical system 130 through the second reflection surface 123b.

The display device 132 of the projection optical system 130 outputs image information to be projected by appropriate switching or reflection processes when the light emitted from the illumination optical system 120 arrives, Information is projected on the screen 140 by the projection lens 133.

The display device 132 may be a DMD (digital micromirror device), a liquid crystal on silicon (LCoS), or a liquid crystal device (LCD). In addition, the projector 100 according to the present invention may use a scanner in place of the prism 131 and the display device 132.

2 is a block diagram of a laser projector having a reflection type polarization conversion unit according to an embodiment of the present invention.

2, the laser projector according to the present invention includes light sources 212, 214 and 216, dichroic mirrors 222, 224 and 226 as an image projecting part, and a scanner 230, A polarized light conversion unit 240, a power supply unit 260, and a control unit 270.

Of course, the laser projector according to the present invention may be configured to include elements other than the above-described components (for example, a reflection surface, a prism, and the like) as needed, but other than the above- Since there is no direct connection, a detailed explanation thereof will be omitted below for simplicity of explanation.

On the other hand, it should be noted that when the components are implemented in practical applications, two or more components may be combined into one component as necessary, or one component may be divided into two or more components .

Hereinafter, the components of the laser projector 300 according to the present invention will be described in order.

The light sources 212, 214 and 216 are composed of laser diodes of red (R), green (G) and blue (B), and emit laser light generated from the laser diodes.

The dichroic mirrors 222, 224, and 226 separate laser light emitted from the light sources 212, 214, and 216.

The scanner 230 scans the laser light emitted from the light sources 212, 214 and 216 and reflects the image on the screen 250 by reflecting the light on the x axis (horizontal) or the y axis (vertical).

A panel such as a digital micromirror device (DMD), a liquid crystal on silicon (LCoS), and a liquid crystal device (LCD) may be used instead of the scanner 230.

The polarization conversion unit 240 changes the polarization direction of laser light emitted from the dichroic mirrors 222, 224, and 226 or the scanner 230 to remove the coherency of the laser light. The polarization conversion unit 240 may be positioned between the scanner 240 and the screen 250 as shown in FIG. 2 and may be positioned between the dichroic mirrors 222, 224, and 226 and the scanner 240 Lt; / RTI > The details of the operation of the polarization converter 240 will be described later in detail.

The power supply unit 260 supplies power to the respective components of the laser projector, and the control unit 270 controls the overall operation of the respective components of the laser projector.

Hereinafter, the configuration of the reflection type or transmission type polarization conversion unit 240 will be described.

The reflection type polarization conversion unit 240 includes a polarization rotation plate, a motor, and a reflection plate. That is, the polarization rotation plate rotates the polarization of laser light by a predetermined angle. The polarizing rotary plate may be a lambda / 4 rotary plate that rotates the polarized light from 0 DEG to 45 DEG in a stationary state.

Under the control of the control unit 270, the motor receives power from the power supply unit 260 and rotates the polarization rotation plate.

A reflection plate is formed between the polarization rotation plate and the motor. When the polarization conversion unit 240 is positioned between the scanner 240 and the screen 250 as shown in FIG. 3, When the polarized light is reflected by the screen 250 and the polarized light conversion unit 240 is located between the dichroic mirror 220 and the scanner 230, the polarized light is reflected by the scanner 230 .

The transmission type polarization conversion unit 240 includes a polarization rotation plate and a motor. That is, the polarization rotation plate rotates the polarization of laser light by a predetermined angle. The polarizing rotary plate may be a lambda / 2 rotary plate which rotates the polarized light from 0 DEG to 90 DEG mainly in a stationary state.

Under the control of the control unit 270, the motor receives power from the power supply unit 260 and rotates the polarization rotation plate.

Generally, a laser is emitted with the direction of a particular polarization when the beam is emitted. The beam having such a specific polarization direction passes through the polarization conversion section 240 including the polarization rotation plate according to the present invention, so that the beam having polarization in different directions progresses at the same time continuously as the time changes.

Through this process, beams having different polarizations continuously change temporally and spatially to produce different interference fringes, and the laser spot patterns generated by temporally and spatially continuous interference fringe patterns are formed on the screen 250 When it is seen, it appears as an average of the laser spot patterns, so that the glitter phenomenon appears to disappear and the laser spot is removed.

That is, the polarization direction of the beam emitted from the laser beam is continuously changed by the polarization converter 240 according to the present invention, so that the coherence inherent to the laser beam is reduced, and as the coherence is reduced, Is removed.

FIG. 3 is a view for explaining an image processing system according to an embodiment of the present invention, and FIG. 4 is a view for explaining a first state and a second state of a PDLC screen according to an embodiment of the present invention And FIG. 5 is a diagram illustrating a PDLC screen for outputting an overlay image according to the present invention.

Here, the image processing system according to the present invention includes an image projection device for projecting an image, a PDLC screen having a PDLC film on a screen, a power supply unit electrically connected to the PDLC film to supply power, And controls the PDLC film to be in a second state by interrupting the power supply, wherein the switching operation of the power supply and the power supply interruption is performed at a predefined predetermined period And a control unit for controlling the control unit.

Referring to FIG. 3, the image processing system includes a PDLC screen 320 and a projector 330 as an image projection device. At this time, the image projection device may be, for example, at least one or more, and may include a projector and other digital device (s) capable of projecting other images.

The user 340 may view the object or foreground 310 at a predetermined distance from the rear surface of the PDLC screen 320 in the first state through the PDLC screen 320. In the second state, 320 can not be seen. That is, the PDLC screen 320 is in a first state, the PDLC film is in a transparent state, and the second state may be an opaque state. In other words, when power is supplied to the PDLC screen or the PDLC film 320, the PDLC screen 410 becomes transparent so that the foreground or objects can be seen through, When the power supply is interrupted, the PDLC screen 420 becomes opaque or translucent so that no external foreground or object can be seen, as shown in FIG. 4B.

In the present invention, the user continuously switches between the first state and the second state as shown in FIGS. 4A and 4B at a predetermined cycle, that is, within a period of time within which the after-image disappears into the human eye, So as to be able to see.

According to the present invention, although not shown, the PDLC screen comprises a built-in or external power supply and a controller. The power supply unit supplies power to the PDLC film, and the controller controls power supply to the PDLC film at the power supply unit and performs overall control of the PDLC screen. In addition, the controller can perform data communication and perform other control according to the image projection apparatus and the wire / wireless communication protocol.

Such a controller may instruct the power supply unit to supply power to the PDLC film when an image projected from the image projection apparatus is received.

Wherein the controller instructs the power supply unit to interrupt the power supply when the image projected from the image projection apparatus is received and supplies power to the PDLC film when the predetermined period has elapsed from the image reception time Command.

The controller may control the power supply and cutoff switching operation to be automatically performed at the predefined period when the image projected from the image projection apparatus is received.

The controller can command the PDLC screen to execute an active mode to output an image projected from the image projection apparatus.

The controller collects illuminance data around the PDLC screen, compares the collected illuminance data with the output image data, and determines whether the switching cycle of the PDLC film is different from the predefined predetermined cycle based on the comparison result Can be controlled.

For example, the controller may collect illuminance data around the PDLC screen, compare the illuminance data collected with the output image data, and determine, based on the comparison result, the light output intensity of the projector, And a color change of the image data to the projector.

Meanwhile, the PDLC screen may be attached to a head-up display of a vehicle and a see-through display of a wearable device.

Referring to FIG. 5, the PDLC screen 510 is overlaid with predetermined information on an external foreground.

The tree 520 in the center of the PDLC screen 510 is focused to receive the distance information 348m from the PDLC screen to the tree 520 and the action or image 530 to the upper left corner, Current temperature (30 ° C) (540) and the current time information (11:00 am) (550) are displayed in the lower right corner.

However, the configuration of the overlay image in the PDLC screen is only an example for facilitating the understanding of the present invention and for convenience of explanation, and the scope of the present invention is not limited thereto. In other words, in FIG. 5, text-type information is mainly overlaid, but the overlaid data may include not only text data but also various data formats such as still image, moving image data, and the like.

6 to 7 are views for explaining a case where a PDLC screen is attached to a head-up display for a vehicle according to an embodiment of the present invention.

FIG. 6A shows a front window of a vehicle operator, and FIG. 6B shows a PDLC screen according to the present invention attached to the front window of FIG. 6A.

In a typical vehicle, no information is output to the front windshield 610 of the vehicle driver as shown in FIG. 6A. However, the head-up display, which is currently popular, outputs predetermined information to the front window of the driver of the vehicle as shown in FIG. 6B. However, in the case of the conventional head-up display, it is mainly required to have a glass window separately manufactured for the head-up display or to display only a part of the front window. However, in the case of the head-up display for a vehicle shown in FIG. 6B, a head-up display is implemented by attaching a PDLC film of a predetermined size to a front window of the vehicle driver at a desired position at a desired position by the driver.

6B, the obstacle 620 is focused on the center, the current vehicle speed and gear level are outputted to the left upper end 630, and driving information such as left turn, right turn, The navigation information including the navigation information is output, the fuel information is outputted to the lower left side 650 and the current time information is outputted to the lower right side 660.

In the case of FIG. 6B according to the present invention, the projector for projecting an image on the PDLC screen needs to be located mainly near the driver's hand near the area where the image is necessarily output, such as a head-up display for a conventional vehicle And may be disposed at any position capable of projecting an image on the PDLC screen. On the other hand, the PDLC film is electrically connected to a battery or the like of the vehicle, and performs switching operations such as transparent and opaque as shown in FIGS. At this time, it is preferable that the switching period is set and controlled such that there is no driving disturbance according to the switching period when visual elements are very important, such as a vehicle. In other words, the switching period is arbitrarily set according to the characteristics of the device in which the PDLC screen is employed, and the period is arbitrarily changeable.

On the other hand, Fig. 7 is similar to Fig. 6B except that in this case, when the telephone is turned on from the other party, the other party's image 620 is output on the PDLC screen.

Here, the projector can be paired with the mobile device of the vehicle driver and receive image data for video communication therefrom. At this time, the audio data can be directly processed and outputted by the mobile device.

7, when a video call, a text message, or the like is received, the driver of the vehicle can solve a safety problem that may occur as a result of directly viewing or handling the mobile device during operation. On the other hand, the projector may move or change the size of the output image 620 of the other party to another area in the PDLC screen in response to a command from the vehicle operator.

In addition, if the image output format of FIG. 6 is a basic format in the vehicle, when other image data is output, an output image of the basic format may be moved or removed to another area to perform adaptive processing. In this case, in the case of outputting the image data added to the basic format continuously, there may be a problem by interfering with the view of the driver of the vehicle.

8 to 9 are diagrams for explaining a case where a PDLC screen is attached to a screen of a wearable device according to an embodiment of the present invention.

8 and 9 are diagrams illustrating components and functions of an image processing device.

8 and 9, the external configuration of the spectacular image processing device and its function will be described in more detail.

The spectacular image processing device is largely divided into a body part and a mounting part.

The trunk portion is constituted by a left / right display 822/824 which outputs a content and uses a see-through display, and a supporting portion which supports the left / right display 822/824. At this time, the left / right display 822/824 is a PDLC screen with a PDLC film attached according to the present invention.

Here, as described above, the support unit may include various interfaces and sensors according to its position in addition to the basic functions of supporting and fixing the left and right displays 822/824, and may be used in the control process of the image processing device. A camera sensor 826, a tracking system 828, and the like may be provided in a portion between the left and right displays 822/824 as a front portion of the support portion.

The camera sensor 826 senses images / video, etc. and provides sensing data to the processor.

The tracking system 828 controls and tracks the content output through the left / right display 822/824.

In addition, there may be a control unit 834 for controlling the resolution of the output content, the position at which the image is formed, and the like on the left / right display 822/824 as a support unit. This is implemented as a touch pad, and the position at which the resolution or image is formed can be controlled as the user touches the left and right.

In addition, a microphone 830 may be provided under the left and right displays 822/824 as a support part. The microphone 830 serves as an interface for receiving external and user voice such as voice recording, search, or quick search. The audio data received via the microphone 830 may be processed in the processor 810.

In addition, an antenna 832 is provided on one side of the support part to perform signal reception, sensitivity check, and the like.

The mount is a basic function for supporting or fixing the image processing device to a part of the user's body. The mounting portion is composed of an outer surface and an inner surface, and the outer surface and the inner surface can perform different configurations or functions. And the outer surface of the right mounting portion includes a touch pad 816, a computing system & communication interface 814, a power supply 816, and the like from a region close to the body portion .

On the other hand, the inner surface of the left mounting part may be the area 842 in which the battery is mounted. The inner surface of the right mounting portion and the outer surface of the left mounting portion correspond to the inner surface of the left mounting portion and the outer surface of the right mounting portion, respectively, and can be implemented with the same configuration. However, it will be appreciated that each side of each mounting part can be implemented in different configurations as necessary. In addition, the furthest portion of the body portion, i.e., the tail portion 844, may be used for a module or a secondary battery for a specific function.

Fig. 9 shows, for example, the inner surface of the trunk portion of the image processing device.

A proximity sensor 910 is provided between the left and right displays 822/824. Here, the proximity sensor 910 determines whether or not the user wears the image processing device, for example, and measures the distance between the image processing device and the pupil of the user. Based on the information sensed by the proximity sensor 910, the image processing device minimizes consumed power according to the state to perform functions such as smart power management, stopping of data being reproduced, bookmarking, storage, And adjusting the focal depth that is specified by the user according to the user's operation.

On the other hand, since the PDLC screen is provided in the left / right display 822/824, as shown in FIG. 9, a screen configuration 920 as shown in FIG. 5 together with an external image like a cue- .

Accordingly, referring to FIG. 9, a wearer wearing a wearable device can enjoy a display as if an augmented reality was made.

In addition, although not shown or described in the present specification, a PDLC screen according to the present invention can be used at any time without restriction of space or space by attaching the PDLC film to all services that can be provided in a conventional digital device or a display device. In other words, in general, if an image is to be output or served in a place where a display is not provided in advance, it is complicated to implement it externally. However, according to the present invention, if an object of a predetermined size is only transparent or opaque, ) And output it to the users.

FIG. 10 is a view for explaining an image processing method according to an embodiment of the present invention.

The image processing method in an image processing system according to an embodiment of the present invention includes the steps of receiving an image to be projected, controlling the switching operation of power supply and power supply interception at a predefined period, And outputting the received image on a PDLC screen having a PDLC film attached thereto on a screen, the PDLC film switching and repeating switching between a first state and a second state according to a switching operation.

The PDLC screen executes the active mode (S1002). Here, the meaning of the active mode means that the switching on / off is started at a predetermined period, for example.

Thereafter, the projector receives the content data including the image data (S1004), decodes the received content data (S1006), and projects the decoded content data on the PDLC screen (S1008).

The controller of the projector or the PDLC screen collects peripheral illuminance data of the PDLC film or the screen (S1010), and compares the output content data with the collected illuminance data (S1012). Here, the meaning of the comparison is to judge whether the output content data is recognizable by the surrounding illuminance and to control the output content data.

If the ambient illuminance is too bright to recognize the content, the controller requests the projector to convert at least one of the output position, the resolution, and the color of the content data (S1014).

The projector converts the content data according to the request and outputs it to the PDLC screen (S1016).

According to the present invention, by attaching a PDLC film to a screen of a digital device or a non-digital device, it is possible to overlay and output an image projected through an image projection device onto a screen that can be viewed through a screen, And PDLC screens or image projection devices to provide intuitive perception of overlaid images. PDLC screens can be attached to a vehicle or wearable device to facilitate head-up display or seed-through display. And the like.

Although the present invention has been described with reference to the projector as an image projection apparatus in order to facilitate understanding of the present invention and for convenience of explanation, the scope of the present invention is not limited thereto. In other words, the image projection apparatus is applicable in the same or similar manner to various types of digital devices capable of outputting images to the outside.

The image processing system and the image processing method disclosed in this specification can be applied to not only the configuration and method of the above-described embodiments are limited, but the embodiments can be applied to all or some of the embodiments May be selectively combined.

Meanwhile, the operation method of the image processing system disclosed in the present specification can be implemented as a code that can be read by a processor on a recording medium readable by a processor included in the image processing system. The processor-readable recording medium includes all kinds of recording devices in which data that can be read by the processor is stored. Examples of the recording medium readable by the processor include ROM (Read Only Memory), RAM (Random Access Memory), CD-ROM, magnetic tape, floppy disk, optical data storage device, And may be implemented in the form of a carrier-wave. In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Of the right. Further, such modified embodiments should not be understood individually from the technical idea of the present invention.

100: projector 110: light source
111: light source 112: first condensing lens
113: Collimating lens
120: illumination optical system 121a, 121b: dichroic mirror
122: second condensing lens 123a, 123b: first and second reflecting surfaces
124: integrator 125: illumination lens
130: projection optical system 131: prism
132: display element 133: lens

Claims (20)

An image processing system comprising:
PDLC screen with PDLC film on screen;
A projector for projecting and outputting an image on a specific location of the PDLC screen;
A power supply unit electrically connected to the PDLC film to supply power; And
The PDLC film is controlled to be in a first state by supplying power to the PDLC film, and the PDLC film is controlled to be in a second state by interrupting the power supply, And a controller for controlling the control unit to perform the predetermined period,
The controller comprising:
And comparing the collected illuminance data with the data of the output image, and based on the comparison result, illuminance around the PDLC screen is brighter than a predetermined level, And controls the projector such that an output position of the image is changed when recognition of the image output on the position is difficult. The method according to claim 1,
Wherein the first state is that the PDLC film is transparent and the second state is the opaque state of the PDLC film. The method according to claim 1,
Wherein the predefined predetermined period comprises:
Wherein the image is a time before a residual image disappears in a human eye. The method according to claim 1,
The controller comprising:
And instructs the power supply unit to supply power to the PDLC film when an image projected from the projector is received. The method according to claim 1,
The controller comprising:
When the image projected from the projector is received, commands the power supply unit to interrupt the power supply, and commands the power supply to the PDLC film when the predetermined period has elapsed from the image reception time point Image processing system. The method according to claim 1,
The controller comprising:
And controls the power supply and cutoff switching operation to be automatically performed at the predefined period when the image projected from the projector is received. The method according to claim 1,
The controller comprising:
And instructs the PDLC screen to execute an active mode to output an image projected from the projector. delete delete The method according to claim 1,
The PDLC screen comprises:
Through display of a wearable device and a head-up display of a vehicle and a cue-through display of the wearable device. A method of processing an image in an image processing system,
Receiving an image to be projected;
Controlling the switching operation of the power supply and the power supply cutoff to continue at a predefined predetermined period;
Outputting the received image on a PDLC screen having a PDLC film attached thereto on a screen, the PDLC film switching and repeating switching between a first state and a second state according to the switching operation;
Collecting illumination data around the PDLC screen;
Comparing the collected illuminance data with data of the output image; And
And changing an output position of the image when the roughness of the periphery of the PDLC screen is brighter than a predetermined level based on the result of the comparison and the recognition of the image output on a specific position of the PDLC screen is difficult, Processing method. delete delete delete delete delete delete delete delete delete

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