JP2012208333A - Information presentation system and information presentation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information presentation system and so on by which a sub-image different from a main image can be displayed without interfering with the display of a main image, by allowing a user to specify a requested area on a display screen, and by which a reduction in size can be achieved by a simple configuration.SOLUTION: An information presentation system 10 has the configuration in which when a main image is displayed on an image display surface US by a table type information presentation device 100, a superposition area SA in the image display surface US used to display a sub-image, different from a main image, is displayed by a small liquid crystal panel apparatus 200 placed on the table type information presentation device 100.

Description

  The present invention relates to a technique for controlling visualization of an image using polarized light.

  In recent years, table-type information presentation that can be operated by participants in conferences or viewers of exhibits while displaying various information on the top of exhibits such as conference tables or exhibition tables that display various information. System research is progressing. In addition, the use of advertisements in these table type information presentation systems or the use in various fields such as use in games has been studied.

  For example, such a table-type information presentation system is different from a transparent polarizing sheet placed on a part of the large display while displaying a predetermined image on a large display provided on a table surface or the like. There is known one capable of browsing two different materials by displaying an image (for example, Patent Document 1).

  In particular, in this system, in order to recognize the position of the polarizing sheet on the large display, the entire large display is imaged via the polarizing film by an imaging camera such as a CCD from above the display surface of the large display. The position of the polarizing sheet can be recognized by recognizing only the image transmitted through the polarizing sheet. Therefore, the system displays a predetermined image at the position of the large display corresponding to the recognized position of the polarizing sheet.

JP 2009-157360 A

  However, in the system described in Patent Document 1, since the entire large display is imaged by an imaging camera such as a CCD from above the display surface of the large display, it becomes a large-scale system and can be installed in a space. Or the location is limited.

  The present invention has been made to solve the above-described problems, and its purpose is to specify a region desired by a user on a display screen and prevent the display of the main image from a sub-image different from the main image. And providing an information presentation system and the like that can be displayed and can be downsized with a simple configuration.

  (1) In order to solve the above problem, the present invention is an information presentation system that presents information to a user by displaying a main image and a sub-image different from the main image as a part of the main image, Light irradiation means for irradiating illumination light that is the basis of the main image and the sub-image, an incident surface on which the irradiated illumination light is incident, and transmitting the incident illumination light while polarizing the polarized light A display panel that displays the main image and the sub-image according to the optical rotation of the light, and a transparent panel, which is movably mounted on a part of the display surface of the display panel. A polarization adjusting terminal device that adjusts the optical rotation of the polarized light emitted from the display surface to form a latent image of the mark image, and is disposed opposite to the incident surface of the display panel, and the display panel Irradiated from the display surface of An imaging camera that images light through the display panel and the polarization adjustment terminal device, and a superimposition in the display screen of the display panel by the polarization adjustment terminal device based on a captured image captured by the imaging camera Detection means for detecting a region; and image data for displaying the sub-image in a superimposed region in the display screen of the detected display panel while displaying the main image on the display panel. And an image data supply means for supplying the image data.

  With this configuration, the present invention makes it possible to visualize and capture a mark image that has been latentized based on polarized light in a superimposed region on the display panel of the polarization adjustment terminal device by using the display panel. It is possible to cause the camera to capture an image, recognize a superimposed area based on the captured image, display a main image on the display panel, and display a sub-image on the superimposed area of the display panel.

  Therefore, according to the present invention, if the polarization adjustment terminal device is placed on the display panel, the user can specify the desired area on the display surface (that is, the overlapping area). A sub-image different from the main image can be displayed in the area desired by the user.

  In addition, since the present invention has no obstacle to display on the display surface of the display panel, the main image and the sub-image can be accurately displayed, and the display panel can be used for the latent image of the mark image. It is also possible to dispose an imaging camera between the light irradiating means and the display panel, and it is possible to reduce the size by simplifying the structure and effectively utilizing the space.

  (2) Further, according to the present invention, the polarization adjustment terminal device adjusts the optical rotation of a plurality of pixels configured by liquid crystal elements and the polarized light transmitted through each pixel, and irradiates from the display surface of the display panel. And a drive circuit for generating a mark image that can be captured by the imaging camera based on the polarized light.

  With this configuration, the present invention can display a mark image by controlling each pixel, and can individually identify the polarization adjustment terminal device by using a different mark image for each polarization adjustment terminal device. . Therefore, according to the present invention, different sub-images can be displayed in the overlapping regions corresponding to each polarization adjustment terminal device, so that it is possible to provide extensibility that can accommodate various information presentations.

  (3) Further, the present invention includes a plurality of the polarization adjustment terminal devices, and each of the polarization adjustment terminal devices displays the mark image different from each of the other polarization adjustment terminal devices based on the irradiated polarized light. It has a configuration to generate.

  With this configuration, since the present invention can individually identify the polarization adjustment terminal device by using a different mark image for each polarization adjustment terminal device, different sub-images can be displayed in the overlapping region corresponding to each polarization adjustment terminal device. Each of them can be displayed and can be provided with extensibility that can accommodate various information presentations.

  (4) In the present invention, the display panel includes a plurality of polarizing layers provided on the display surface and the irradiation surface, and a plurality of liquid crystal elements sandwiched by the polarizing layer in the display screen. And a pixel.

  With this configuration, the present invention makes it possible to visualize a mark image that has been latentized based on polarized light in a superimposed region on the display panel of the polarization adjustment terminal device by using the display panel. The camera can be imaged, and the sub image can be displayed in the overlapping region of the display panel while displaying the main image on the display panel.

  (5) Further, in the present invention, the imaging camera is configured to capture an image of polarized light that is irradiated from an illumination unit different from the light irradiation unit and is incident on the polarization adjustment terminal device and the display panel via a polarizing film. have.

  With this configuration, the present invention can easily generate polarized light used for imaging by an imaging camera such as providing a polarizing film for a lighting fixture, and thus can be downsized with a simple configuration.

  (6) Moreover, this invention has the structure by which the said imaging camera is arrange | positioned between the said light irradiation means and the said display panel.

  With this configuration, the present invention does not require the imaging camera to be provided above the display surface of the display panel, so that downsizing can be realized with a simple configuration.

  (7) In order to solve the above-described problem, the present invention has a transparent panel, and operates in conjunction with a polarization adjustment terminal device that adjusts the optical rotation of polarized light to form a latent image of a mark image. An information presentation device that presents information to a user by displaying a different sub-image as a part of the main image, and a light irradiating means for irradiating illumination light that is the basis of the main image and the sub-image; An incident surface on which the irradiated illumination light is incident, and a display surface that transmits the incident illumination light while being polarized and displays the main image and the sub-image according to the optical rotation of the polarized light. The display panel and the display panel are arranged so as to face the incident surface, and the polarized light irradiated from the display surface of the display panel can be moved to the display panel and a part of the display surface of the display panel. The polarization adjustment placed on An imaging camera that captures an image via a terminal device, and a detection unit that detects a superimposed region in a display screen of the display panel by the polarization adjustment terminal device based on a captured image captured by the imaging camera; The image data supply for supplying to the display panel image data for displaying a mark image different from the main image in a superimposed area in the display screen of the detected display panel while displaying the main image on the display panel Means.

  With this configuration, the present invention makes it possible to visualize and capture a mark image that has been latentized based on polarized light in a superimposed region on the display panel of the polarization adjustment terminal device by using the display panel. It is possible to cause the camera to capture an image, recognize a superimposed area based on the captured image, display a main image on the display panel, and display a sub-image on the superimposed area of the display panel.

  Therefore, according to the present invention, if the polarization adjustment terminal device is placed on the display panel, the user can specify the desired area on the display surface (that is, the overlapping area). A sub-image different from the main image can be displayed in a region desired by the user.

  In addition, since the present invention has no obstacle to display on the display surface of the display panel, the main image and the sub-image can be accurately displayed, and the display panel can be used for the latent image of the mark image. It is also possible to dispose an imaging camera between the light irradiating means and the display panel, and it is possible to reduce the size by simplifying the structure and effectively utilizing the space.

  In the present invention, if the polarization adjustment terminal device is placed on the display panel, the region on the display surface desired by the user (that is, the overlapping region) can be specified. A sub-image different from the main image can be displayed in a region desired by the user.

  In addition, since the present invention has no obstacle to display on the display surface of the display panel, the main image and the sub-image can be accurately displayed, and the display panel can be used for the latent image of the mark image. It is also possible to dispose an imaging camera between the light irradiating means and the display panel, and it is possible to reduce the size by simplifying the structure and effectively utilizing the space.

It is a system configuration figure in one embodiment of an information presentation system concerning the present invention. It is a block diagram which shows the structure containing the structure and functional block of the liquid crystal display panel of one Embodiment. It is a block diagram which shows the structure of the image detection provision apparatus in one Embodiment. It is a block diagram which shows the structure containing the structure and functional block of the liquid crystal cell of the small-sized liquid crystal panel apparatus in one Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the embodiment described below, a table-type information presentation device (hereinafter referred to as “table-type information presentation device”) that displays a main image and a sub-image, and a sub-image on the table-type information presentation device. In the embodiment, the polarization adjustment terminal device, the information presentation system, or the information presentation device of the present invention is applied to an information presentation system including a small liquid crystal terminal device used for determining a display position.

  In the description of the present application, light that has passed through polarizing means such as a polarizing plate or a polarizing filter is defined as “polarized light”.

[Outline of information presentation system]
First, the outline | summary of embodiment of the information presentation system 10 which concerns on this invention using FIG. 1 is demonstrated. FIG. 1 is a system configuration diagram showing the configuration of the information presentation system 10 of the present embodiment.

  As shown in FIG. 1, the information presentation system 10 according to the present embodiment is mounted on a table-type information presentation apparatus 100 having a liquid crystal display panel 120 that displays a main image and a sub image, and the liquid crystal display panel 120. In addition, the liquid crystal display panel 120 includes a small liquid crystal panel device (polarization adjustment terminal device) 200 for specifying a region for displaying a sub-image (hereinafter referred to as “sub-image display region”). The information presentation system 10 presents information to the user by displaying a main image and a sub image on the table type information presentation apparatus 100.

  In particular, the information presentation system 10 presents the table-type information presentation when the table-type information presentation apparatus 100 displays a predetermined image (that is, a main image) on a table surface (hereinafter referred to as “image display surface”) US. An area (hereinafter referred to as “sub-image display area” or “superimpose area”) in the image display surface US for displaying a sub-image different from the main image by the small liquid crystal panel device 200 placed on the apparatus 100. ) SA is specified.

  Specifically, the small liquid crystal panel device 200 adjusts the optical rotation of the polarized light emitted from the upper surface of the liquid crystal display panel 120 toward the small liquid crystal panel device 200 and the liquid crystal display panel 120 by the illumination device 300, The image is made to become a latent image. In particular, the small liquid crystal panel device 200 is placed on a part of the image display surface US of the liquid crystal display panel 120 in the table type information presentation device 100, and based on polarized light irradiated from the image display surface US. A predetermined mark image is formed into a latent image in an area (that is, a sub-image display area) that is placed and superimposed on the display surface.

  For example, as the mark image, an image having a rotational symmetry and having a unique pattern is used.

  The table-type information presentation device 100 displays a main image on the liquid crystal display panel 120 while visualizing a mark image that has been formed into a latent image by the liquid crystal display panel 120, and the liquid crystal display panel 120 based on the visualized image. The overlapping area SA in the inside is recognized. Then, the table-type information presentation device 100 displays a sub-image different from the main image on the recognized overlapping area SA on the liquid crystal display panel 120.

  By having such a configuration, the information presentation system 10 of the present embodiment, when the small liquid crystal panel device 200 is placed on the liquid crystal display panel 120, the region on the image display surface US desired by the user (that is, Since the superimposing area SA) can be designated, a sub-image different from the main image can be displayed in an area desired by the user by an intuitive operation by the user.

  For example, in this case, a photograph of a product to be sold or displayed is displayed as the main image, and a detailed description of the product is displayed as the sub-image.

  In addition, since the information presentation system 10 of the present embodiment has nothing to prevent display on the display surface of the display panel, the main image and the sub-image can be accurately displayed, and the liquid crystal display panel 120 is marked. It is possible to use various kinds of devices in the table-type information presentation device 100, that is, under the liquid crystal display panel 120, for use in forming a latent image, simplifying the structure and effectively using space. It is possible to realize miniaturization by utilizing it.

[Table type information presentation device]
Next, the structure in the table type information presentation apparatus 100 of this embodiment is demonstrated using FIGS. 1-3. 2 is a configuration diagram showing a configuration including the structure and functional blocks of the liquid crystal display panel 120 of the present embodiment, and FIG. 3 is a configuration diagram showing a configuration of the image detection providing device 160 in the present embodiment. .

  As shown in FIGS. 1 and 2, the table-type information presentation device 100 according to the present embodiment displays a casing 110 serving as a table, and a main image and a sub-image provided on the upper surface of the casing 110. Liquid crystal display panel 120, drive control unit 130 that drives liquid crystal display panel 120, backlight 140 that supplies (that is, irradiates) illumination light from the inside of housing 110 toward liquid crystal display panel 120, and the housing An imaging camera 150 that captures the entire display area (hereinafter also referred to as “panel display area”) that displays an image on the image display surface US side of the liquid crystal display panel 120 and a small liquid crystal panel device 200 are mounted inside 110. And an image detection providing device 160 that detects the superimposed region SA and provides the liquid crystal display panel 120 with the main image and the sub-image.

  The housing 110 is formed in a box shape in which the liquid crystal display panel 120 is provided integrally on the upper surface, and the inside is hollow. Further, in the housing 110, the backlight 140, the imaging camera 150, and the image detection providing device 160 are disposed so as not to interfere with each of the imaging region or the irradiation region.

  The liquid crystal display panel 120 is formed on the entire top surface of the housing 110 and has a panel display area composed of a plurality of pixels (pixels). Further, the liquid crystal display panel 120 has a back surface (hereinafter also referred to as “lower surface”) BS on which illumination light emitted from the backlight 140 is incident, that is, a surface formed inside the housing 110, a main image, It has a surface (hereinafter, also referred to as “upper surface”) opposite to the lower surface that displays the sub-image, that is, an image display surface US.

  Specifically, as shown in FIGS. 1 and 2, the liquid crystal display panel 120 includes a pair of polarizing layers, for example, a polarizing filter (hereinafter referred to as “upper surface polarizing filter” and “lower surface polarizing filter”) 121, and It is comprised from the panel part 122. FIG.

  The polarization directions of the upper surface polarizing filter 121a and the lower surface polarizing filter 121b are different by 90 degrees, and the upper surface polarizing filter 121a polarizes light emitted from the backlight 140 in a predetermined direction, and the polarized light (that is, polarized light) ) Is emitted to the glass substrate 123, the transparent electrode 124 and the alignment layer 125.

  The panel unit 122 includes a pair of glass substrates (hereinafter referred to as “upper surface glass substrate” and “lower surface glass substrate”) 123 sandwiched between a pair of polarizing filters, and a pair sandwiched between the pair of glass substrates 123. Transparent electrodes (hereinafter also referred to as “upper surface transparent electrodes” and “lower surface transparent electrodes”) 124 and a pair of alignment layers (hereinafter referred to as “upper surface alignment layers” and “lower surfaces”) sandwiched between the pair of transparent electrodes 124. 125 ”and a liquid crystal layer 126 sandwiched between a pair of alignment layers.

  The liquid crystal layer 126 includes liquid crystal molecules (liquid crystal elements) that are twisted and aligned at a predetermined angle (specifically, 90 degrees) between the upper surface alignment layer 125a and the lower surface alignment layer 125b. The liquid crystal layer 126 normally passes incident polarized light along the twisted and aligned liquid crystal molecules so that the optical rotation becomes 90 degrees. Then, the liquid crystal layer 126 changes the optical rotation of the incident polarized light according to the control of the upper transparent electrode 124a and the lower transparent electrode 124b based on the image data related to the main image and the sub image input to the drive control unit 130. The adjustment is made in the range of 0 to 90 degrees.

  Further, the bottom polarizing filter 121b transmits the polarized light having an optical rotation of 90 degrees by passing through the liquid crystal layer 126 and blocks the other polarized light, and the optical rotation in the liquid crystal layer 126. For polarized light adjusted in the range of 0 to 90 degrees, the polarization component adjusted based on the optical rotation is emitted.

  In addition, the liquid crystal display panel 120 has an intersection (m) of data lines (not shown) extending in the column direction and n scanning lines (not shown) extending in the row direction (not shown). That is, the liquid crystal layer 126 is controlled for each pixel), and the upper transparent electrode 124a and the lower transparent electrode 124b are controlled based on signals from the scanning line and the data line selected by the image data input to the drive control unit 130. Thus, the optical rotation of the polarized light from the lower surface polarizing filter 121b in each pixel is individually controlled.

  The backlight 140 is an illumination unit that is provided on the inner bottom surface of the table-type information presentation device 100 and irradiates the entire liquid crystal display panel 120 from the back surface BS toward the liquid crystal display panel 120 from the bottom surface. In particular, the backlight 140 is disposed in a place where the imaging camera 150 device and the image detection providing device 160 do not interfere with irradiation of the entire liquid crystal display panel 120. For example, the backlight 140 is configured by a plurality of white LEDs.

  The imaging camera 150 captures at least the entire panel display area of the liquid crystal display panel 120. In addition, the imaging camera 150 includes an imaging device (hereinafter referred to as “CCD”) that performs photoelectric conversion, a housing 110 that stores the CCD, and a camera mechanism such as an imaging lens, and a panel display area formed in the CCD. The image is converted into predetermined image data and output to the image detection providing device 160.

  The drive control unit 130 performs various controls for driving the liquid crystal display panel 120 to display the main image and the sub-image based on the image data sent from the image detection providing device 160. Specifically, the drive control unit 130 controls the liquid crystal layer 126 corresponding to each pixel via a plurality of data lines, and the liquid crystal layer corresponding to each pixel via a plurality of scanning lines. A scanning line driving circuit 132 for controlling the image data, a memory circuit 133 for temporarily storing image data to be displayed on the panel unit 122, and a control circuit 134 for controlling each unit.

  The data line driving circuit 131 has a plurality of m data lines under the control of the control circuit 134, and selects the corresponding data line based on the input image data relating to the main image and the sub-image. ing. The scanning line driving circuit 132 has a plurality of n scanning lines under the control of the control circuit 134, and selects the corresponding scanning line based on the input image data.

  The control circuit 134 is configured to perform overall control of the above-described units. In particular, the control circuit 134 converts image data relating to the main image and the sub-image into matrix data for controlling the optical rotation in the liquid crystal layer 126 of each pixel, and performs data line driving based on the converted matrix data. The circuit 131 and the scanning line driving circuit 132 are controlled. The memory circuit 133 is supplied with image data relating to the main image and the sub-image to be displayed on the liquid crystal display panel 120 from the outside via the control circuit 134, and the supplied image data relating to the main image and the sub-image is supplied to the memory circuit 133. Stored internally.

  The image detection providing device 160 is a computer device that can execute various analyzes and controls by a program such as a personal computer. The image detection providing device 160 has a function of detecting a superposition region SA in the panel display region of the liquid crystal display panel 120 by the small liquid crystal panel device 200 based on a picked-up image picked up by the image pickup camera 150 (hereinafter referred to as “superposition region detection”). Also, the main image is displayed on the liquid crystal display panel 120, and image data for displaying a sub-image different from the main image in the detected overlapping area SA is supplied to the liquid crystal display panel 120. A function (hereinafter also referred to as “image data supply function”) is executed by a program (hereinafter referred to as “detection supply program”).

  Specifically, the image detection providing apparatus 160 includes a detection supply program and a ROM / RAM 161 having a memory function used when the detection supply program is executed, and terminal management for managing and controlling the image detection providing apparatus 160. It has a control unit 162 and a data processing unit 163 that executes a detection supply program, and each unit is connected by a bus B. In particular, the data processing unit 163 executes a detection supply program, generates a superimposition region detection unit 165 that executes a superimposition region detection function, and generates image data for generating a main image and a sub image on the liquid crystal display panel 120, An image generation unit 166 to be supplied to the liquid crystal display panel 120 is constructed.

  The ROM / RAM 161 stores data (hereinafter referred to as “marker data”) for recognizing a mark image visualized by being picked up by the image pickup camera 150 when the overlapping area SA is detected. In particular, this marker data is data of the same image pattern as the mark image. For example, the pixel of each pixel forming the same image as the image when the mark image such as binarized data of each pixel is normalized Data consisting of values.

  Based on the marker data stored in the ROM / RAM 161, the overlapping area detection unit 165 analyzes an image captured by the imaging camera 150 (hereinafter referred to as “captured image”) and recognizes the visualized mark image. The position coordinates in the panel display area of the recognized mark image are specified. Specifically, the overlapping area detection unit 165 performs template matching using a normalized correlation coefficient using a template for an image (that is, a captured image) of the liquid crystal display panel 120 that is a recognition target image. Yes.

  For example, the overlapping area detection unit 165 performs a binarization process on the captured image, corrects distortion caused by the imaging camera 150, and uses a transformation matrix calculated in advance for the corresponding area. Conversion is to be performed.

  Here, the corresponding region is a region corresponding to an image used as a template, and in this embodiment, the same image as the mark image is a template, that is, it has a rotationally asymmetric shape in the center. Since the quadrangle becomes a template, the superimposition area detection unit 165 extracts the quadrilateral area from the binarized spatial image while correcting it, and performs perspective transformation on the extracted quadrilateral area. Then, the overlapping region detection unit 165 recognizes a region similar to the template as a mark image from the perspective-transformed region.

  For details on template matching in the superimposition region detection unit 165, co-authored by Hirokazu Kato, Mark Billinghurst, Koichi Asano, and Keihachiro Tachibana “Augmented Reality System Based on Marker Tracking and Its Calibration” Vol. . 4, no. 4 (1999) and Hirokazu Kato “Development of Augmented Reality System Construction Tool ARTToolKit” IEICE Technical Report PRMU 2001-232 (2002-2).

  In the present embodiment, a mark image is formed depending on an image (that is, a main image or a sub image) displayed in the panel display area when passing through the liquid crystal display panel 120 irradiated from the illumination device 300. In some cases, the optical rotation of the polarized light is affected and is not accurately visualized in the captured image captured by the imaging camera 150. However, since the overlapping region detection unit 165 according to the present embodiment determines an image region having a high similarity as a mark image by template matching, even if the mark image is not accurately visualized in the captured image. , Can be recognized.

  On the other hand, the overlapping region detection unit 165 recognizes the mark image from the captured image based on the polarization direction of the polarized light emitted from the illumination device 300 and the polarization directions of the upper surface polarizing filter 121a and the lower surface polarizing filter 121b in the liquid crystal display panel 120. To do.

  For example, if the polarization direction of the polarized light from the illumination device 300 is the same as the polarization direction of the upper surface polarizing filter 121a of the liquid crystal display panel 120 (a direction different from the polarization direction of the lower surface polarizing filter 121b), the small liquid crystal The lightness (gradation value) of the polarized light constituting the mark image whose optical rotation is adjusted by the panel device 200 becomes dark, and the lightness of the polarized light in the portion where the optical rotation is not adjusted is maintained. Further, if the polarization direction of the polarized light from the illumination device 300 is the same direction as the lower surface polarization filter 121b of the liquid crystal display panel 120 (a direction different from the polarization direction of the upper surface polarization filter 121a by 90 degrees), the small liquid crystal panel device 200. The brightness (gradation value) of the polarized light constituting the mark image with the optical rotation adjusted by is maintained, and the brightness of the polarized light in the portion where the optical rotation is not adjusted becomes dark. That is, the contrast at which the mark image is visualized by the captured image is reversed depending on the relationship between the direction of the polarizing film 310 and the upper surface polarizing filter 121a or the lower surface polarizing filter 121b of the liquid crystal display panel 120. In view of this, the superimposed region detection unit 165 of this embodiment sets the contrast of the mark image to be recognized in advance, and recognizes the mark image from the captured image.

  In addition, the overlapping area detection unit 165 identifies a predetermined area based on the position coordinates at the center of the recognized mark image as the overlapping area SA, and determines the overlapping image area (for example, the coordinates of the four corners of the overlapping image area). ) To the image generation unit 166.

  Under the control of the terminal management control unit 162, the image generation unit 166 generates necessary image data based on the coordinate position of the overlap region SA in order to draw the main image and the sub image in the specified overlap region SA. The generated image data is output to the liquid crystal display panel 120.

[Small liquid crystal panel device]
Next, the small liquid crystal panel device 200 of the present embodiment will be described with reference to FIG. FIG. 4 is a configuration diagram showing the structure and functional blocks of the liquid crystal cell of the small-sized liquid crystal panel device 200 in the present embodiment.

  As shown in FIG. 4, the small-sized liquid crystal panel device 200 includes a liquid crystal cell 210 having a panel display region formed of a transparent panel and a plurality of pixels, and a cell driving unit that drives the liquid crystal cell 210. 220, and a mark image generation unit 230 for generating a mark image in the liquid crystal cell 210.

  Specifically, like the panel unit 122 of the liquid crystal display panel 120, the liquid crystal cell 210 includes a pair of glass substrates 211, a pair of transparent electrodes 212 sandwiched between the pair of glass substrates, and a pair of transparent electrodes. A pair of alignment layers 213 sandwiched between 212 and a liquid crystal layer 214 sandwiched between a pair of alignment layers 213 are formed.

  In particular, like the liquid crystal display panel 120, the liquid crystal layer 214 includes liquid crystal molecules (liquid crystal elements) that are twisted and aligned at a predetermined angle (specifically, 90 degrees) between the pair of alignment layers 213. is doing. The liquid crystal layer 214 normally passes incident polarized light through the twisted and aligned liquid crystal molecules so that the optical rotation becomes 90 degrees. Then, the liquid crystal layer 214 adjusts the optical rotation of the incident polarized light in the range of 0 to 90 degrees according to the control of the pair of transparent electrodes 212 based on the image data of the mark image input to the mark image generation unit 230. To adjust.

  In addition, the liquid crystal cell 210 has an intersection (that is, an intersection of m rows of data lines (not shown) extending along the column direction and n rows of scanning lines (not shown) extended along the row direction (not shown)). For each pixel), the liquid crystal layer 214 is controlled, and the pair of transparent electrodes 212 is controlled based on the signals from the scanning line and the data line selected by the image data of the mark image, and the polarizing film is applied from the illumination device 300 in each pixel. The optical rotation of the polarized light irradiated through 310 is individually controlled.

  The cell driver 220 performs various controls for driving the liquid crystal to display the mark image based on the image data sent from the mark image generator 230. Specifically, the cell driving unit 220 includes a data line driving circuit 221 that controls a liquid crystal layer corresponding to each pixel via a plurality of data lines, and a liquid crystal layer corresponding to each pixel via a plurality of scanning lines. A scanning line driving circuit 222 for controlling, a memory circuit 223 for temporarily storing mark image data to be displayed on the liquid crystal cell 210, and a control circuit 224 for controlling each unit are provided.

  The data line driving circuit 221 has a plurality of m data lines under the control of the control circuit 224, and selects a corresponding data line based on the input mark image data. Further, the scanning line driving circuit 222 has a plurality of n scanning lines under the control of the control circuit 224, and selects the corresponding scanning line based on the input mark image data.

  The control circuit 224 is configured to comprehensively control each of the above parts. In particular, the control circuit 224 converts the mark image data into matrix data for controlling the optical rotation in the liquid crystal layer of each pixel, and the data line driving circuit 221 and the scanning line driving based on the converted matrix data. The circuit 222 is controlled. The memory circuit 223 is supplied with mark image data to be displayed on the liquid crystal cell 210 from the outside via the control circuit 224, and the supplied mark image data is stored therein.

  The mark image generation unit 230 generates image data necessary for displaying the mark image to be latent image on the liquid crystal cell 210, and outputs the generated image data to the cell driving unit 220.

[Lighting device]
Next, the illuminating device 300 of this embodiment is demonstrated using FIG.

  As illustrated in FIG. 1, the illumination device 300 according to the present embodiment includes a light source and a polarizing film 310 that covers the entire light source, and polarizes the light emitted from the light source and outputs the polarized light to the entire liquid crystal display panel 120. . That is, the illumination device 300 is provided on the image display surface US of the liquid crystal display panel 120 (above the image display surface), and the small liquid crystal panel device 200 emits polarized light from the image display surface US of the liquid crystal display panel 120. In addition, the liquid crystal display panel 120 is irradiated. For example, the lighting device 300 is configured by a fluorescent lamp, an incandescent lamp, or other lighting fixture that is used as a light source indoors.

  The polarizing film 310 is a film that polarizes light from an unpolarized light source in a predetermined polarization direction. The polarization direction of the polarizing film 310 is not particularly limited as long as the light emitted from the light source can be emitted as a polarization component having a certain polarization direction. In other words, any polarization direction that can recognize a mark image visualized by the imaging camera 150 via the small liquid crystal panel device 200 and the liquid crystal display panel 120 from the captured images captured by the imaging camera 150 may be used. For example, in the case of the information presentation system 10 of the present embodiment, the polarizing film 310 may have a polarization direction that is parallel to the upper surface polarizing filter 121a or different by 90 degrees.

[Function and effect]
As described above, the information presentation system 10 according to the present embodiment can designate the superimposition area SA desired by the user by placing the small liquid crystal panel device 200 on the liquid crystal display panel 120. Thus, a sub-image different from the main image can be displayed in a region desired by the user. Since the information presentation system 10 of the present embodiment has nothing to prevent display on the image display surface of the liquid crystal display panel 120, the main image and the sub image can be accurately displayed, and the liquid crystal display panel 120 can be used to make a latent image of a mark image, and an imaging camera 150 can be disposed between the irradiation device and the liquid crystal display panel 120, and the size can be reduced by simplifying the structure and effectively using the space. be able to.

  In the information presentation system 10 of the present embodiment, the type of the mark image can be easily changed by using the small liquid crystal panel device 200. Further, the mark image can be displayed at an arbitrary position within the range of the liquid crystal cell 210.

[Modification]
In the above embodiment, a main image may be displayed on the liquid crystal display panel 120 using a plurality of small liquid crystal panel devices 200, and a different sub-image may be displayed for each small liquid crystal panel device 200.

  In this case, each small liquid crystal panel device 200 forms a unique mark image based on the polarized light emitted from the illumination device 300, and the overlapping area detection unit 165 is stored in the ROM / RAM 161. Each mark image is recognized based on the marker data corresponding to the unique mark image, and the respective overlapping area SA is recognized. Then, the image generation unit 166 provides the liquid crystal display panel 120 with image data for displaying different sub-images in the recognized individual overlapping areas SA.

  For example, in this case, photographs of a plurality of products are displayed as the main image, and detailed descriptions of individual products are displayed as images as the sub-image. In addition, the mark image that is formed into a latent image by each small-sized liquid crystal panel device 200 is a pattern having no rotational symmetry and recognized by the multiple image area detection unit 165, and an image formed of a unique pattern is used. Yes.

  With this configuration, the present modification can display a mark image by controlling each pixel, and individually identifies the small liquid crystal panel device 200 by using a different mark image for each small liquid crystal panel device 200. Therefore, different sub-images can be displayed in the overlapping areas SA corresponding to the small liquid crystal panel devices 200, respectively, and it is possible to provide extensibility that can cope with various information presentations.

  The information presentation system 10 of the present invention is used in a conference system that presents various information when a conference is held, and an exhibition system such as an art museum or a museum.

DESCRIPTION OF SYMBOLS 10 ... Information presentation system 100 ... Table type information presentation apparatus 110 ... Case 120 ... Liquid crystal display panel 121a ... Upper surface polarizing filter 121b ... Lower surface polarizing filter 122 ... Panel part 130 ... Drive control part 140 ... Backlight 150 ... Imaging camera 160 ... Image detection providing device 161 ROM / RAM
162 ... Terminal management control unit 163 ... Data processing unit 165 ... Superimposed region detection unit 166 ... Image generation unit 200 ... Small liquid crystal panel device 210 ... Liquid crystal cell 300 ... Illumination device 310 ... Polarizing film

Claims (7)

An information presentation system for presenting information to a user by displaying a main image and a sub-image different from the main image as a part of the main image,
Light irradiating means for irradiating illumination light that is the basis of the main image and the sub-image;
An incident surface on which the irradiated illumination light is incident; a display surface that transmits the incident illumination light while polarizing the polarized light; and displays the main image and the sub-image according to the optical rotation of the polarized light; A display panel having
A device that has a transparent panel and is movably mounted on a part of the display surface of the display panel, and adjusts the optical rotation of the polarized light emitted from the display surface to hide the mark image. A polarization adjusting terminal device for imaging,
An imaging camera that is disposed to face the incident surface of the display panel and that captures the polarized light emitted from the display surface of the display panel via the display panel and the polarization adjustment terminal device;
Detecting means for detecting a superimposed region in a display screen of the display panel by the polarization adjusting terminal device based on a captured image captured by the imaging camera;
The image data supply means for supplying the display panel with image data for displaying the sub-image in a superimposed region in the display screen of the detected display panel while displaying the main image on the display panel; ,
An information presentation system comprising: The information presentation system according to claim 1,
The polarization adjustment terminal device,
A plurality of pixels composed of liquid crystal elements;
A drive circuit for adjusting the optical rotation of the polarized light transmitted for each pixel and generating a mark image that can be captured by the imaging camera based on the polarized light emitted from the display surface of the display panel;
An information presentation system comprising: The information presentation system according to claim 2,
A plurality of the polarization adjustment terminal devices,
Each said polarization adjustment terminal device produces | generates the said mark image different from another polarization adjustment terminal device based on the said irradiated polarized light, respectively. In the information presentation system according to any one of claims 1 to 3,
The display panel is
A polarizing layer provided on each of the display surface and the irradiation surface;
A plurality of pixels composed of liquid crystal elements sandwiched by the polarizing layer in the display screen;
An information presentation system. In the information presentation system according to any one of claims 1 to 4,
An information stop system in which the imaging camera images polarized light that is irradiated from an illumination unit different from the light irradiation unit and is incident on the polarization adjustment terminal device and the display panel via a polarizing film. In the information presentation system according to any one of claims 1 to 5,
An information stop system, wherein the imaging camera is disposed between the light irradiation unit and the display panel. The main image and a sub-image different from the main image are displayed as part of the main image in conjunction with a polarization adjustment terminal device that has a transparent panel and adjusts the optical rotation of polarized light to make the mark image a latent image. An information presentation device that presents information to a user by
Light irradiating means for irradiating illumination light that is the basis of the main image and the sub-image;
An incident surface on which the irradiated illumination light is incident; a display surface that transmits the incident illumination light while polarizing the polarized light; and displays the main image and the sub-image according to the optical rotation of the polarized light; A display panel having
The polarized light that is disposed so as to face the incident surface of the display panel and is movably mounted on the display panel and a part of the display surface of the display panel. An imaging camera for imaging via the adjustment terminal device;
Detecting means for detecting a superimposed region in a display screen of the display panel by the polarization adjusting terminal device based on a captured image captured by the imaging camera;
The image data for supplying the display panel with image data for displaying a mark image different from the main image in a superimposed region in the display screen of the detected display panel while displaying the main image on the display panel Supply means;
An information presentation device comprising:

Images