WO2019003304A1 - Projection image display system - Google Patents

Projection image display system Download PDF

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Publication number
WO2019003304A1
WO2019003304A1 PCT/JP2017/023588 JP2017023588W WO2019003304A1 WO 2019003304 A1 WO2019003304 A1 WO 2019003304A1 JP 2017023588 W JP2017023588 W JP 2017023588W WO 2019003304 A1 WO2019003304 A1 WO 2019003304A1
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WO
WIPO (PCT)
Prior art keywords
display system
projection type
video display
touch sensor
type video
Prior art date
Application number
PCT/JP2017/023588
Other languages
French (fr)
Japanese (ja)
Inventor
克行 渡辺
藤田　浩司
賀来　信行
崇嗣 川端
浩一 梶原
Original Assignee
マクセル株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by マクセル株式会社 filed Critical マクセル株式会社
Priority to PCT/JP2017/023588 priority Critical patent/WO2019003304A1/en
Publication of WO2019003304A1 publication Critical patent/WO2019003304A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information

Definitions

  • the present invention relates to a video display system.
  • a projection type video display which is an optical device for projecting various types of video, inputs a video signal from the outside and enlarges the video, as is also known in Patent Document 1 below. Is widely used as a means for projecting light onto a panel or wall surface.
  • Patent Document 2 a system that can be interactively operated via the video while projecting a video using a projection type video display device is already known from Patent Document 2 below.
  • the present invention has an object to provide an image display system more suitable for portability and simplicity.
  • a video signal generation that generates a video signal by executing a predetermined operation based on an external input or operation
  • a projection type image display apparatus for projecting an image by enlarging the image based on the image signal from the image signal generation section; displaying an image projected from the projection type image display apparatus;
  • Interactive screen device capable of generating an input signal by handwriting input or operation of the coordinates, and coordinates for performing coordinate correspondence between a plane coordinate value of the image to be projected and a plane coordinate value from a table surface incorporating the interactive screen
  • a projection type image display system having an image projection apparatus for projecting information on a table having an interactive screen built therein, wherein the strength of the table is secured and at the same time the sensitivity of the touch sensor sheet is suppressed.
  • An interactive projection type image display system capable of stable table touch operation by arranging
  • the present invention is an interactive projection type video display system having a table incorporating an interactive screen, and the projection type video display apparatus for projecting information has an interactive function from a short focus projector having a projection ratio of 0.2 or less
  • the projection type video display apparatus for projecting information has an interactive function from a short focus projector having a projection ratio of 0.2 or less
  • a projection type having a form for projecting information on a table having an interactive function from a projector fixed on the upper part of the table A video display device is provided.
  • a projection type image display apparatus fixed to an interactive table operating as an interactive operation surface and a table top of a table incorporating an interactive screen excellent in operability while maintaining the strength of the table.
  • BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the general appearance of the interactive projection type video display system which is one embodiment of this invention. It is a figure which shows the state which the projector which comprises an interactive projection type video display system is projecting an imaging
  • FIG. 1 It is a figure which shows the cross-section of the table which incorporated the said interactive screen.
  • (A), (B) is a figure which shows the curvature of the table top plate which incorporated the said interactive screen, and the relationship of an incorporated member.
  • (A), (B) is a figure which shows the structure of the member laminated
  • (A), (B) is a figure which shows the charge amount change stored when an electrostatic touch sensor is touched with a finger directly.
  • (A) and (B) are figures which show the charge amount change accumulate
  • FIG. 1 shows the configuration of a table incorporating an interactive screen according to an embodiment of the present invention, and the overall configuration of a projection type video display system.
  • 1 is a plane coordinate detection unit
  • 4 is a table containing an interactive screen (hereinafter referred to as an interactive table)
  • 5 is a projector (projection type video display device)
  • 6 is a video signal generation unit
  • 8 indicates a control unit.
  • the plane coordinate detection unit 1 incorporated in the above-mentioned interactive table 4 includes a plurality of conductors (X coordinate conductor and Y coordinate conductor) which are arranged orthogonal to each other and which oppose each other with a dielectric interposed therebetween. Furthermore, an X-coordinate detection and grouping wiring portion 9 in which the X-coordinate conductors are grouped and a Y-coordinate detection and grouping wiring portion 10 in which the Y-coordinate conductors are grouped are provided.
  • the plane coordinate detection unit 1 forms the Y coordinate electrostatic detection sensor 15 and the X coordinate electrostatic detection sensor 16 respectively.
  • the plane coordinate detection unit 1 is a sensor that detects the level of capacitance change related to the dielectric constant, and is at the intersection of the X coordinate electrostatic detection sensor 15 and the Y coordinate electrostatic detection sensor 16 respectively. By touching the vicinity with a finger, a change in capacitance related to the dielectric constant is detected, and the detection signal (coordinate signal) is detected via the X coordinate detection summary wiring unit 10 and the Y coordinate detection summary wiring unit 9. It sends to each sensor signal generation unit 11. These detection signals (coordinate signals) are sent from the sensor signal generation unit 11 constituting the plane coordinate detection unit 1 to the coordinate adjustment unit 7 as a plane coordinate detection signal 19.
  • the surface of the plane coordinate detection unit 1 is used as a screen surface, for example, covered with a white-based top plate 4 in which the projection light from the projector is easily visible.
  • group arrange
  • the projection image from the projector 5 is projected onto the interactive table 4.
  • a state where an image from the projector 5 is projected on the interactive table 4 is shown in FIG.
  • the contact position (input position) information of the finger on the interactive table 4 is sent to the coordinate adjustment unit 7 by the planar coordinate detection signal 19 from the planar coordinate detection unit 1.
  • the projection video signal 21 is sent from the video signal generation unit 6 to the projector 5 described above.
  • the coordinate adjustment unit 7 associates the coordinates of the image scale projected on the interactive table 4 with the scale of the plane coordinate detection unit 1.
  • the scale correspondence information is sent to the control unit 8, and the control unit 8 changes and displays the image of the portion touched by the finger on the screen image (for example, a black dot, an arrow, etc.).
  • the projector 5 projects an image on the top surface of the top of the table 4 incorporating the interactive screen, and the handwriting incorporated in the interactive table 4
  • the plane coordinate detection unit 1 capable of inputting enables an interactive operation by the touch of an operator's finger or the like on the upper surface of the top plate of the interactive table 4 and can provide an interactive table and a projection type video display system .
  • the video signal generation unit 6, the coordinate adjustment unit 7, and the control unit 8 described above have, for example, a general personal computer (hereinafter simply referred to as a "PC"), a terminal, or a dedicated computer. It is well configured as an interactive device that generates an image as its output in response to an input from the operator and performs a desired process in response to the input.
  • the projector 5 described above may be, for example, a small desktop projection type and a short focus projector, or a direct throw type projector that projects an image perpendicularly to the screen.
  • projection can be easily performed anywhere on the table surface by preparing the interactive screen (further, personal computer) built in the portable table together with the small-sized projector 5 It is possible to construct a video display system capable of realizing interactive operations on the captured video.
  • the lower case 502 having a substantially rectangular outer shape and the upper side disposed and fixed on the upper surface thereof, whose component parts are integrally formed with the bottom surface and the peripheral side surfaces. It is accommodated in the inside of the space formed by case 503, and is comprised. Further, as is apparent from these figures, a substantially central portion of the upper case 503, which is the upper surface of the projector device, is formed in a so-called hilly shape (convex portion), and a portion thereof is That is, the openable and closable mirror cover 531 is separated from the other parts and is attached so as to be rotatable outward by a predetermined angle. And, inside the openable mirror cover 531, a reflection mirror (free curved surface mirror) 132 which is a part of the optical system and is formed in a rotationally asymmetric shape with a convex shape is attached.
  • a reflection mirror (free curved surface mirror) 132 which is a part of the optical system and is formed in a rotationally asymmetric shape with a con
  • a lens optical system (not shown) is mainly disposed inside the convex portion of the above-mentioned open / close mirror cover 531, and an opening for guiding the projection light to the outside is formed.
  • a rotary knob for focus adjustment on the surface of the upper case 503, a rotary knob for focus adjustment, a touch panel operation unit including push buttons for various inputs, and the like are provided on the surface of the upper case 503, a rotary knob for focus adjustment, a touch panel operation unit including push buttons for various inputs, and the like are provided.
  • a pair of stand legs 505, 505 are integrally formed with the main body on one side of the lower case 502 of the projector device so as to enable vertical installation corresponding to the usage of the device.
  • the weight is set to a relatively light weight of about 1.2 kg as a whole. That is, they are designed so that they can be easily installed and projected.
  • An image from the projector device 5 is projected on a projection surface such as a screen, a wall surface, a desk or a table, for example.
  • a short focus optical system (not shown) having a projection ratio of 0.2 or less (0 or more) can project and display a sufficiently enlarged image even if the distance from the device to the image projection surface is short. It has excellent projection performance.
  • the screen size 16 when an image is projected in a state where the front end portion of the device is in contact with the image projection surface, the screen size 16 of 30.5 inches ⁇ 19.1 inches (36 inches diagonal: 16 inches) You can get the screen of 10).
  • FIG. 3 shows the configuration of an interactive table and a projection type video display system in the case where the projector 5 of FIG.
  • the description of the same functional units and the same operations as in FIG. 1 will be omitted.
  • the projector 30 used in FIG. 3 is a projector having both an illumination function and a projector function. When the projector image is not projected, the illumination is turned on the table. Also, when projecting a projector image, the illumination operates to dim or extinguish.
  • the projector 10 has a positional relationship in which the projection optical axis is perpendicular to the projection surface (table surface).
  • the projector 30 has an optical projection image enlargement / reduction function or an electronic enlargement / reduction function, and can project an image on a table surface with an appropriate image size on the projection surface.
  • Reference numeral 33 denotes a table top
  • 34 denotes an image projected on the table surface.
  • the projector illumination 30 is attached to the tip of the pole 31, the pole 31 is fixed to the top plate 33 by the fixing portion 32, and the information is projected from the projector illumination 30 to the top plate.
  • the projector lighting 30 incorporates a lighting device using an LED element, and can also be used as general lighting.
  • the position of the fixing portion 32 for fixing the pole 31 relative to the projection surface 34 as shown in FIG. By making the table end positioned in the direction perpendicular to the rectangular longitudinal direction (indicated by the arrow in the figure), it is possible to provide a more visible environment for the viewer of the image by surrounding the table.
  • FIG. 1 A top view of a table incorporating the touch sensor sheet 41 is shown in FIG.
  • the touch sensor sheet 41 is built in the inside of the top plate 33, and a portion of the flexible cable 42 for transmitting and receiving signals is bored in the surface of the top plate, and the flexible cable 42 is used as the back surface of the table top plate from the hole.
  • the control circuit is attached to turn.
  • the top plate has a color tone with high concealment, and by attaching the touch sensor sheet 41 to a lower layer to a furniture-like table surface with melamine coating etc., the table surface interacts while being a natural table. It is considered as the operation side.
  • the table surface has a circular shape, and the touch sensor sheet 41 is disposed inscribed in the circular table surface.
  • the touch sensor sheet 41 is disposed inscribed in the circular table surface.
  • the table may have any shape, and the touch sensor sheet 41 may be circular as long as it can be included in the table. good.
  • the touch sensor sheet having a predetermined area may be partially disposed at a predetermined position on the table surface.
  • the aspect ratio of the touch sensor sheet 41 does not have to be particularly limited. The attachment method of the details of the touch sensor sheet 41 will be described with reference to FIGS. 12 and 13. Here, the positional relationship between the top 33 and the touch sensor sheet 41 will be described.
  • the table top needs to have a strength, and a thickness of, for example, 30 mm or more is required.
  • the candidate members will be described below.
  • the dielectric constant ⁇ is about 2 to 4 when it is dry, but when it absorbs water, the dielectric constant ⁇ becomes large, so an unstable state is created for the electrostatic touch sensor sheet. become.
  • the surface unevenness is large, the gap with the electrostatic touch sensor sheet is likely to change depending on the location, and the capacitance changes due to the air layer, and wood directly under the electrostatic touch sheet Stable touch sensing becomes difficult.
  • synthetic resins such as acrylics and polycarbonates have a dielectric constant ⁇ of, for example, 2.7 (acrylic) /2.9 (polyca) and, unlike wood, have a substantially constant dielectric constant while having few surface irregularities.
  • the gap between the electrostatic touch sensor sheet and the electrostatic touch sensor sheet can be made relatively uniform, and the variation in capacitance due to the location can be suppressed.
  • the surface strength is weak and easily scratched, so it is not suitable as a top surface member of the top plate of the table. Then, the said subject is solvable by sticking the member which is hard to get a scratch on acrylic resin with few unevenness
  • a member having a low dielectric constant is used as described with reference to FIGS. 9 and 10, the amount of change in electric charge when a finger is touched decreases and it becomes difficult to distinguish. It is necessary to put a material that is hard to stick or hard to notice.
  • the members used on the surface of the table is melamine resin, but since the dielectric constant ⁇ is relatively high at about 7, the amount of change in charge when a finger is touched is secured to maintain a large capacitance. Can be used to reduce the impact on discrimination performance.
  • it since it is a scratch-resistant material and the surface has a high degree of diffusion, it is suitable for projecting an image from a projector. From the above reasons, a member on the touch sensor sheet has a basic configuration as shown in FIG.
  • FIG. 5 The schematic diagram of the cross section which followed the broken line of the table top plate 33 shown in FIG. 5 is shown in FIG.
  • Melamine resin 45, acrylic resin or polycarbonate resin 46, electrostatic touch sensor sheet 48, and insulating material 50 are disposed in order from the top of the top plate, and wood 47, 51, 52 is disposed to surround them. There is.
  • an acrylic resin sheet 46 with few surface irregularities is placed on the top of the electrostatic touch sensor sheet 48, and a melamine resin sheet 45 is bonded on the top. At this time, in order to maintain the strength, a thickness of 30 mm is secured by the resin member layer.
  • the first resin member on the top plate surface side touched by the finger is a melamine resin having a relatively high dielectric constant, and the finger does not touch
  • the lower second resin member on the side is made of acrylic resin having a relatively low dielectric constant
  • the thickness of the first resin member on the top plate surface side is made smaller than the thickness of the lower second resin member
  • the table covered with wood 47, 51, 52 is not necessarily grounded including the table legs, when the electrostatic touch sensor sheet 48 is placed directly on the wood 52, the electrostatic touch sensor sheet The 48 charges become unstable, and good touch performance can not be obtained. In order to avoid that, it becomes possible to arrange the insulating material 50 and operate the electrostatic touch sensor sheet 48 stably.
  • a cushioning material (elastic member) 49 is disposed on the lower surface of the electrostatic touch sensor sheet 48.
  • the cushioning material (elastic member) 49 presses the electrostatic touch sensor sheet 48 against the acrylic resin 46.
  • the electrostatic touch sensor sheet 48 and the acrylic resin 46 are used. It is possible to maintain close contact with it and to realize stable touch operability.
  • stacked on the table 4 at FIG. 8 (A), and sectional drawing after incorporating in the table 4 at (B) are shown.
  • FIG. 9A shows an equivalent circuit of an electrostatic touch sensor.
  • the electrostatic touch sensor includes a dielectric 61 and an electrode 60, and charges are accumulated in a capacitor C062 (capacitance value C0). Also, when the finger 64 touches the dielectric 61, the capacitor C1-65 (capacitance value C1) is formed, the charge of the capacitor C0-62 moves to the capacitor C1-65, and the finger 64 detects the amount of change. It detects the touched position.
  • the charge Q0 is stored in the capacitor C062, and at the time T1 when the finger 64 touches, the charge Q0 stored in the capacitor C062 moves to the capacitor C1-65, resulting in the capacitor C0
  • the charge of 62 decreases with time constant CR to Q0 '.
  • a threshold Qth for determining a change in charge determines that the finger 64 is touched when the charge is lower than the threshold, and recognizes the position where the finger 64 is touched on the electrostatic touch sensor sheet.
  • FIG. 10A shows an equivalent circuit in the case where two kinds of members are further superimposed on the dielectric of the electrostatic touch sensor and the finger is touched via them.
  • the capacitance of the acrylic resin 46 in contact with the electrostatic touch sensor sheet 48 and the melamine resin 45 pasted thereon is represented by a capacitor C2-66 (capacitance value C2) and a capacitor C3-67 (capacitance value C3).
  • the capacitance C of the electrostatic touch sensor member can be expressed by the following equation.
  • C ⁇ ⁇ S / T ( ⁇ : dielectric constant, S: area, T: thickness)
  • the inventors confirmed the discrimination performance of the electrostatic touch sensor under the above conditions, and confirmed that stable discrimination can be performed.
  • the capacitance of the member stacked on the upper part of the electrostatic touch sensor is 30% of the capacitance of the electrostatic touch sensor, for example, the capacitance value is about 10%
  • the change amount is also about 10% It turns out that it is difficult to determine the change.
  • the aspect ratio of the touch sensor sheet 41 is 16: 9. Since the touch sensor sheet 41 is provided in the lower layer of the table top surface having high concealability, it is difficult to visually grasp the effective range of the touch sensor sheet 41. In order to realize the interactive operation on the image projected from the projector 5 or 30, it is necessary to make the area of the projected projector image and the area of the touch sensor sheet 41 coincide with each other.
  • the appearance of the mark on the table top surface is impaired if printed or printed on the table top surface, and the table top surface of the table top surface and the lower portion of the touch sensor sheet 41 in FIG. It has LEDs 43 and 44 (there are two other LEDs not shown) corresponding to the four points.
  • the LEDs can be made to emit light, and the four corners of the touch sensor sheet 41 can be illuminated on the table top surface, and the touch sensor sheet 41 below the table top surface You can know the position.
  • the material of the top surface of the table at this time can be realized not by a completely concealed material but by, for example, adopting a concealability (for example, 80% concealment) which allows the light of the LED to slightly pass.
  • a concealability for example, 80% concealment
  • four marks may be provided on the side edges of the table top surface. In this way, the projected image from the projector 5 or 30 can be roughly aligned by an operation of enlarging or reducing the size of the projected image in the touch sensor sheet 41.
  • the operator recognizes the effective range of the touch sensor sheet 41 if the above marks are added to at least two positions of the apex of the diagonal of the rectangle. Is possible.
  • FIG. 12 shows a configuration in which the control substrate located at the end of the electrostatic touch sensor sheet 48 is installed on the back of the table via flexible wiring.
  • 70 is a component constituting the top plate of the table
  • 71 is an electrostatic touch sensor sheet
  • 72 is a wood constituting the back of the table
  • 73 is a control board
  • 74 is a case covering a control board etc.
  • 75 is a control board Structural parts
  • 76 shows a flexible wiring portion of the touch sensor sheet.
  • FIG. 13 shows the configuration of each member when the top plate of the table is viewed from the back, and each reference numeral is the same as the number in FIG.
  • a screen can be obtained by combining a short focus projector capable of desktop projection with a personal computer connected thereto or the like.
  • An image can be easily projected on a table having a function, and an interactive operation performed so far with a smartphone or tablet can be realized on a large screen, and a system in which information can be shared by a plurality of persons can be realized.
  • a hard table surface in addition to interactive operation, it is also possible to simultaneously have the function of a conventional table such as writing characters on paper, eating tea and tea on the table.
  • the present invention is not limited to the above-mentioned embodiment, and various modifications are included.
  • the above-mentioned embodiment explained the interactive table which built the electrostatic touch sensor sheet in the table as an example, it can apply also to the interactive screen which does not have a leg.
  • each member incorporated in the table has been described in a limited manner, but it is also possible to replace it with a member having substantially the same characteristics (surface unevenness performance, dielectric constant, scratch resistance, etc.).
  • DESCRIPTION OF SYMBOLS 1 ... Plane
  • Cushion material (elastic member), 47, 51, 52 ... Wood, 60 ...

Abstract

Provided is a projection image display system having excellent portability and usability. Specifically provided is an interactive screen projection image display system equipped with an image signal generation unit, a projection image display device, an interactive screen device, a coordinate adjustment unit, and a control unit, wherein the interactive screen device is portable and is disposed on the same surface as the projection image display device, and wherein the interactive screen device is equipped with a control unit which converts the position on the surface of the interactive screen device where a handwriting input or an operation has been attempted into a position in an image being projected from the image signal generation unit, making it possible to perform a handwriting input or an operation by touching the surface of the interactive screen onto which an image is being projected.

Description

投射型映像表示システムProjection type image display system
　本発明は、映像表示システムに関する。 The present invention relates to a video display system.
　各種の映像を投射するための光学装置である投射型映像表示装置（いわゆる、プロジェクタ）は、以下の特許文献１にも知られるように、外部からの映像信号を入力してその映像を拡大してパネルや壁面等に投射するための手段として、広く利用されてきている。 A projection type video display (so-called projector), which is an optical device for projecting various types of video, inputs a video signal from the outside and enlarges the video, as is also known in Patent Document 1 below. Is widely used as a means for projecting light onto a panel or wall surface.
　一方、投射型映像表示装置を利用して映像を投射しながら、前記映像を介してインタラクティブに操作可能なシステムも、以下の特許文献２により既に知られている。 On the other hand, a system that can be interactively operated via the video while projecting a video using a projection type video display device is already known from Patent Document 2 below.
特開２０００－１２２１８０号公報Japanese Patent Laid-Open No. 2000-122180 特開２０１６－１８６６６８号公報Unexamined-Japanese-Patent No. 2016-186668
　しかしながら、上述した従来技術、特に、上記特許文献２により知られるインタラクティブプロジェクションシステムでは、映像を、天井面に取り付けたプロジェクタによりパネルや壁面等に拡大して投射する。更に、拡大してパネルや壁面上に投射された映像上で操作者の指やペン等によって行われる指示を、複数台のカメラ手段によって撮像された画像から３次元的に算出・検出して入力する。これにより、インタラクティブなプロジェクションシステムを達成している。そのため、システムが大型化してしまい、特に、その可搬性や簡便性における課題が指摘されていた。 However, in the above-described prior art, in particular, in the interactive projection system known by the above-mentioned Patent Document 2, an image is enlarged and projected on a panel, a wall surface or the like by a projector attached to a ceiling surface. Furthermore, the instruction given by the operator's finger or pen on the image enlarged and projected on the panel or wall surface is calculated and detected three-dimensionally from the images captured by a plurality of camera means and input Do. This achieves an interactive projection system. Therefore, the size of the system has been increased, and in particular, problems in portability and simplicity have been pointed out.
　そこで、本発明は、可搬性や簡便性について、より好適な映像表示システムを提供することをその目的とするものである。 Therefore, the present invention has an object to provide an image display system more suitable for portability and simplicity.
　上記の目的を達成するために、本発明によれば、以下の請求項でも述べるように、まず、外部からの入力または操作に基づいて所定の演算を実行して映像信号を生成する映像信号生成部と、前記映像信号生成部からの映像信号に基づいて映像を拡大して投射する投射型映像表示装置と、前記投射型映像表示装置から投射された映像を表示すると共に、その表示面上での手書き入力または操作により入力信号を生成することが可能なインタラクティブスクリーン装置と、前記投射する映像の平面座標値と前記インタラクティブスクリーンを内蔵したテーブル面からの平面座標値との座標対応付けを行う座標調整部と、前記座標調整部により調整された前記インタラクティブスクリーン装置の平面座標情報に応じて前記映像を変更する制御部と、を備えたインタラクティブスクリーンを内蔵したテーブルに情報を投射する映像投射装置を有した投射型映像表示システムにおいて、前記テーブルの強度を確保すると同時にタッチセンサシートの感度劣化を抑えるために前記タッチセンサシートの下部にクッション層(弾性部材層)を備え、上部に比較的大きな静電容量を確保できる厚さと誘電率を有する部材を配置することで安定したテーブルタッチ操作が可能なインタラクティブ投射型映像表示システムが提供される。 In order to achieve the above object, according to the present invention, as described in the following claims, first, a video signal generation that generates a video signal by executing a predetermined operation based on an external input or operation A projection type image display apparatus for projecting an image by enlarging the image based on the image signal from the image signal generation section; displaying an image projected from the projection type image display apparatus; Interactive screen device capable of generating an input signal by handwriting input or operation of the coordinates, and coordinates for performing coordinate correspondence between a plane coordinate value of the image to be projected and a plane coordinate value from a table surface incorporating the interactive screen An adjusting unit, and a control unit that changes the image according to the plane coordinate information of the interactive screen device adjusted by the coordinate adjusting unit; A projection type image display system having an image projection apparatus for projecting information on a table having an interactive screen built therein, wherein the strength of the table is secured and at the same time the sensitivity of the touch sensor sheet is suppressed. An interactive projection type image display system capable of stable table touch operation by arranging a member having a cushion layer (elastic member layer) in the lower part and a thickness and dielectric constant capable of securing relatively large electrostatic capacity in the upper part Provided.
　本発明によれば、インタラクティブスクリーンを内蔵したテーブルを有したインタラクティブ投射型映像表示システムであって、情報を投射する投射型映像表示装置は、投射比が０．２以下の短焦点プロジェクタからインタラクティブ機能を有したテーブル上に情報を投射する形態を有する投射型映像表示装置が提供できるのに加え、テーブル上部に固定されたプロジェクタからインタラクティブ機能を有したテーブル上に情報を投射する形態を有する投射型映像表示装置が提供される。 According to the present invention, it is an interactive projection type video display system having a table incorporating an interactive screen, and the projection type video display apparatus for projecting information has an interactive function from a short focus projector having a projection ratio of 0.2 or less In addition to providing a projection type video display apparatus having a form for projecting information on a table having a projection type, a projection type having a form for projecting information on a table having an interactive function from a projector fixed on the upper part of the table A video display device is provided.
　本発明によれば、テーブルの強度を保ったまま操作性に優れたインタラクティブスクリーンを内蔵したテーブルの天板をインタラクティブ操作面として動作するインラタクティブテーブルとテーブルに固定した投射型映像表示装置を提供することで、簡単に大画面に対してインタラクティブ操作を実現できるシステムが提供されるという優れた効果が達成されることとなる。 According to the present invention, there is provided a projection type image display apparatus fixed to an interactive table operating as an interactive operation surface and a table top of a table incorporating an interactive screen excellent in operability while maintaining the strength of the table. By doing so, an excellent effect of providing a system capable of easily realizing interactive operation on a large screen is achieved.
本発明の一実施の形態であるインタラクティブ投射型映像表示システム全体の概観構成を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the general appearance of the interactive projection type video display system which is one embodiment of this invention. インタラクティブ投射型映像表示システムを構成するプロジェクタが映像を机上へ投射している状態を示す図である。It is a figure which shows the state which the projector which comprises an interactive projection type video display system is projecting an imaging | video on a desk. 本発明の一実施の形態になるインタラクティブ投射型映像表示システム全体の概観構成を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the general appearance of the interactive projection type video display system which becomes one embodiment of this invention. インタラクティブ投射型映像表示システムにおいてテーブルに取り付けられた投射型映像表示装置からインタラクティブスクリーンを内蔵したテーブルへ投射している状態を示す図である。It is a figure which shows the state currently projected on the table which incorporated the interactive screen from the projection type video display apparatus attached to the table in the interactive projection type video display system. インタラクティブスクリーンを内蔵したテーブルの上面図を示す図である。It is a figure which shows the top view of the table which incorporated the interactive screen. 上記インタラクティブスクリーンを内蔵したテーブルの断面構造を示す図である。It is a figure which shows the cross-section of the table which incorporated the said interactive screen. （Ａ）、（Ｂ）は上記インタラクティブスクリーンを内蔵したテーブル天板の反りと内蔵部材との関係を示す図である。(A), (B) is a figure which shows the curvature of the table top plate which incorporated the said interactive screen, and the relationship of an incorporated member. （Ａ）、（Ｂ）は上記インタラクティブスクリーンを内蔵したテーブルに積層する部材の構成およびテーブルに組み込んだ後の断面図を示す図である。(A), (B) is a figure which shows the structure of the member laminated | stacked on the table which incorporated the said interactive screen, and sectional drawing after incorporating in a table. （Ａ）、（Ｂ）は静電型タッチセンサを直接指で触れた場合の蓄積された電荷量変化を示す図である。(A), (B) is a figure which shows the charge amount change stored when an electrostatic touch sensor is touched with a finger directly. （Ａ）、（Ｂ）は静電型タッチセンサを２種の部材を介して指で触れた場合の蓄積された電荷量変化を示す図である。(A) and (B) are figures which show the charge amount change accumulate | stored when an electrostatic touch sensor is touched with a finger | toe via two types of members. インタラクティブテーブルに内蔵したタッチセンサシートの領域を認識させるマーキング方法を示す図である。It is a figure which shows the marking method made to recognize the area | region of the touch sensor sheet incorporated in the interactive table. 上記インタラクティブスクリーンと回路基板のテーブルへの取り付け構造を示す図である。It is a figure which shows the attachment structure to the table of the said interactive screen and a circuit board. 上記インタラクティブスクリーンとテーブルへの組込み部材の構成を示す図である。It is a figure which shows the structure of the incorporating member to the said interactive screen and a table.
　以下、本発明の実施の形態について、添付の図面を参照しながら、詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.
　まず、図１に、本発明の一実施の形態であるインタラクティブスクリーンを内蔵したテーブル並びに投射型映像表示システム全体の構成を示す。この図において、１は平面座標検出部を、４はインタラクティブスクリーンを内蔵したテーブル(以下インタラクティブテーブルと称す)を、５はプロジェクタ（投射型映像表示装置）を、６は映像信号生成部を、７は座標調整部を、８は制御部を、それぞれ示している。 First, FIG. 1 shows the configuration of a table incorporating an interactive screen according to an embodiment of the present invention, and the overall configuration of a projection type video display system. In this figure, 1 is a plane coordinate detection unit, 4 is a table containing an interactive screen (hereinafter referred to as an interactive table), 5 is a projector (projection type video display device), 6 is a video signal generation unit, Indicates a coordinate adjustment unit, and 8 indicates a control unit.
　また、上記のインタラクティブテーブル４に内蔵される平面座標検出部１は、互いに直交して配列され、かつ、その間に誘電体を挟んで対向する複数の導体（Ｘ座標導体とＹ座標導体）を備え、更に、Ｘ座標導体をまとめたＸ座標検出まとめ配線部９と、Ｙ座標導体をまとめたＹ座標検出まとめ配線部１０を備えている。 Further, the plane coordinate detection unit 1 incorporated in the above-mentioned interactive table 4 includes a plurality of conductors (X coordinate conductor and Y coordinate conductor) which are arranged orthogonal to each other and which oppose each other with a dielectric interposed therebetween. Furthermore, an X-coordinate detection and grouping wiring portion 9 in which the X-coordinate conductors are grouped and a Y-coordinate detection and grouping wiring portion 10 in which the Y-coordinate conductors are grouped are provided.
　また、これらのまとめ配線部９、１０は、それぞれ、センサ信号生成部１１へ接続されている。即ち、上記の構成により平面座標検出部１は、それぞれ、Ｙ座標静電検出センサ１５、および、Ｘ座標静電検出センサ１６を形成している。 Further, these collective wiring sections 9 and 10 are connected to the sensor signal generation section 11 respectively. That is, according to the above configuration, the plane coordinate detection unit 1 forms the Y coordinate electrostatic detection sensor 15 and the X coordinate electrostatic detection sensor 16 respectively.
　より詳細に説明すると、平面座標検出部１は、誘電率に関連した容量変化のレベルを検出するセンサであって、それぞれ、Ｘ座標静電検出センサ１５とＹ座標静電検出センサ１６の交点の近傍を指で触れることで、誘電率に関連した容量の変化を検出し、そして、前記Ｘ座標検出まとめ配線部１０とＹ座標検出まとめ配線部９を介して、その検出信号（座標信号）をそれぞれのセンサ信号生成部１１へ送る。これらの検出信号（座標信号）は、それぞれ、平面座標検出部１を構成するセンサ信号生成部１１から、平面座標検出信号１９として、上記の座標調整部７へ送出される。 More specifically, the plane coordinate detection unit 1 is a sensor that detects the level of capacitance change related to the dielectric constant, and is at the intersection of the X coordinate electrostatic detection sensor 15 and the Y coordinate electrostatic detection sensor 16 respectively. By touching the vicinity with a finger, a change in capacitance related to the dielectric constant is detected, and the detection signal (coordinate signal) is detected via the X coordinate detection summary wiring unit 10 and the Y coordinate detection summary wiring unit 9. It sends to each sensor signal generation unit 11. These detection signals (coordinate signals) are sent from the sensor signal generation unit 11 constituting the plane coordinate detection unit 1 to the coordinate adjustment unit 7 as a plane coordinate detection signal 19.
平面座標検出部１の表面は、プロジェクタからの投射光が視認しやすい、例えば白色系の天板４で覆い、スクリーン面として用いる。なお、前記白色系の天板は平面座標検出部１の検出性能に大きく影響を与えないものを配置する。 The surface of the plane coordinate detection unit 1 is used as a screen surface, for example, covered with a white-based top plate 4 in which the projection light from the projector is easily visible. In addition, the top board of the said white type | system | group arrange | positions what does not affect the detection performance of the plane coordinate detection part 1 largely.
　一方、上記のプロジェクタ５からの投射映像は、インタラクティブテーブル４へ投射される。なお、プロジェクタ５からの映像をインタラクティブテーブル４へ投射している状態を図２に示す。 On the other hand, the projection image from the projector 5 is projected onto the interactive table 4. A state where an image from the projector 5 is projected on the interactive table 4 is shown in FIG.
　かかる構成において、平面座標検出部１からの平面座標検出信号１９により、前記インタラクティブテーブル４上の指の接触位置（入力位置）情報を座標調整部７へ送出する。 In this configuration, the contact position (input position) information of the finger on the interactive table 4 is sent to the coordinate adjustment unit 7 by the planar coordinate detection signal 19 from the planar coordinate detection unit 1.
　また、上記のプロジェクタ５には、投射映像信号２１が、映像信号生成部６から送出される。ここで、プロジェクタ５からインタラクティブテーブル４上へ投射される映像スケールと、当該インタラクティブテーブル４の下層の平面座標検出部１とのスケール調整が必要である。そこで、例えば、前記インタラクティブテーブル４に投射された映像スケールの座標と前記平面座標検出部１とのスケールの対応付けは、座標調整部７にて行う。具体的には、スケールの対応情報は、制御部８へ送出され、当該制御部８は、スクリーン映像に指で触れた部位の映像に変更を加えて表示する（例えば、黒点や矢印等）。 Further, the projection video signal 21 is sent from the video signal generation unit 6 to the projector 5 described above. Here, it is necessary to perform scale adjustment between the image scale projected from the projector 5 onto the interactive table 4 and the plane coordinate detection unit 1 in the lower layer of the interactive table 4. Therefore, for example, the coordinate adjustment unit 7 associates the coordinates of the image scale projected on the interactive table 4 with the scale of the plane coordinate detection unit 1. Specifically, the scale correspondence information is sent to the control unit 8, and the control unit 8 changes and displays the image of the portion touched by the finger on the screen image (for example, a black dot, an arrow, etc.).
　一方、上述したインタラクティブテーブル、並びに、投射型映像表示システムにおいても、上記プロジェクタ５によりインタラクティブスクリーンを内蔵したテーブル４の天板の上面上に映像を投射すると共に、当該インタラクティブテーブル４に内蔵された手書き入力が可能な平面座標検出部１により、当該インタラクティブテーブル４の天板の上面上で、操作者の指等の接触によるインタラクティブ動作が可能となり、インタラクティブテーブル、並びに、投射型映像表示システムを提供できる。 On the other hand, also in the above-mentioned interactive table and projection type image display system, the projector 5 projects an image on the top surface of the top of the table 4 incorporating the interactive screen, and the handwriting incorporated in the interactive table 4 The plane coordinate detection unit 1 capable of inputting enables an interactive operation by the touch of an operator's finger or the like on the upper surface of the top plate of the interactive table 4 and can provide an interactive table and a projection type video display system .
　一方、上述した映像信号生成部６、座標調整部７、制御部８は、例えば、一般的なパーソナルコンピュータ（以下、単に「パソコン」と言う）や端末、または専用のコンピュータの構成であっても良く、操作者からの入力によりその出力として映像を生成すると共に、その入力により所望の処理を行うインタラクティブな装置として構成されている。上述したプロジェクタ５は、例えば、小型の机上投射型で、かつ、短焦点のプロジェクタ、あるいは、スクリーンに対して垂直に映像を投射する直投型プロジェクタであっても良い。 On the other hand, even if the video signal generation unit 6, the coordinate adjustment unit 7, and the control unit 8 described above have, for example, a general personal computer (hereinafter simply referred to as a "PC"), a terminal, or a dedicated computer. It is well configured as an interactive device that generates an image as its output in response to an input from the operator and performs a desired process in response to the input. The projector 5 described above may be, for example, a small desktop projection type and a short focus projector, or a direct throw type projector that projects an image perpendicularly to the screen.
　即ち、上述したインタラクティブスクリーン投射型映像表示システムによれば、小型のプロジェクタ５と共に、可搬型のテーブルに内蔵したインタラクティブスクリーン（更には、パソコン）を準備することにより、どこでも簡単に、テーブル面に投射された映像に対してインタラクティブな操作を実現できる映像表示システムを構築することが可能となる。 That is, according to the above-described interactive screen projection type image display system, projection can be easily performed anywhere on the table surface by preparing the interactive screen (further, personal computer) built in the portable table together with the small-sized projector 5 It is possible to construct a video display system capable of realizing interactive operations on the captured video.
　また、例えば、テーブル面にデジタル広告コンテンツを投射し、該コンテンツを、テーブル面にタッチしてコンテンツのページめくり、拡大縮小操作、テーブル面へ電子的なお絵描きをすることが可能な便利で有用なテーブル型映像表示システムとすることも可能となろう。 In addition, for example, it is possible to project digital advertisement content on a table surface, touch the content on the table surface, turn pages of the content, zoom in / out, and draw electronically on the table surface. It would also be possible to make it a table type video display system.
　＜プロジェクタ装置＞
　ここで、上述したインタラクティブスクリーン投射型映像表示システムを構成するプロジェクタ５について簡単に述べる。
本例のプロジェクタ５は、投射比が０．２以下（但し、０以上）の、いわゆる、短焦点プロジェクタの場合について説明する。 <Projector device>
Here, the projector 5 constituting the above-described interactive screen projection type video display system will be briefly described.
The projector 5 of this example will be described for the case of a so-called short focus projector having a projection ratio of 0.2 or less (0 or more).
　その一例として、図２にも示すように、その構成部品を、底面と周囲の側面を一体に形成した、外形が略矩形状の下側ケース５０２と、その上面に配置されて固定される上側ケース５０３により形成される空間の内部に収容して構成されている。また、これらの図からも明らかなように、このプロジェクタ装置の上面である上側ケース５０３の略中央部は、いわゆる、丘陵状に盛り上がって形成されており（凸状部）、その一部には、即ち、開閉式ミラーカバー５３１が、他の部分から切り離されると共に、外側に向かって所定の角度だけ回動可能に取り付けられている。そして、この開閉式ミラーカバー５３１の内側には、光学系の一部である、凸面形状で回転非対称に形成された反射ミラー（自由曲面ミラー）１３２が取り付けられる。 As one example, as also shown in FIG. 2, the lower case 502 having a substantially rectangular outer shape and the upper side disposed and fixed on the upper surface thereof, whose component parts are integrally formed with the bottom surface and the peripheral side surfaces. It is accommodated in the inside of the space formed by case 503, and is comprised. Further, as is apparent from these figures, a substantially central portion of the upper case 503, which is the upper surface of the projector device, is formed in a so-called hilly shape (convex portion), and a portion thereof is That is, the openable and closable mirror cover 531 is separated from the other parts and is attached so as to be rotatable outward by a predetermined angle. And, inside the openable mirror cover 531, a reflection mirror (free curved surface mirror) 132 which is a part of the optical system and is formed in a rotationally asymmetric shape with a convex shape is attached.
　また、上述した開閉式ミラーカバー５３１の凸状部の内部には、主として、ここでは図示しないレンズ光学系が配置されており、そして、投射光を外部に導くための開口部が形成されている。また、上側ケース５０３の表面には、フォーカス調整用の回転ツマミや、各種入力用のプッシュボタンからなるタッチパネル式操作部などが、それぞれ、設けられている。また、プロジェクタ装置の下側ケース５０２の一側面には、装置の使用形態に対応して縦型の設置が可能なように、一対のスタンド脚５０５、５０５が本体と一体に形成されている。 Further, a lens optical system (not shown) is mainly disposed inside the convex portion of the above-mentioned open / close mirror cover 531, and an opening for guiding the projection light to the outside is formed. . In addition, on the surface of the upper case 503, a rotary knob for focus adjustment, a touch panel operation unit including push buttons for various inputs, and the like are provided. In addition, a pair of stand legs 505, 505 are integrally formed with the main body on one side of the lower case 502 of the projector device so as to enable vertical installation corresponding to the usage of the device.
　加えて、上述したプロジェクタ装置の外形寸法は、その一例として、（幅）Ｗ＝２６５ｍｍ、（奥行き）Ｄ＝２００ｍｍ、（高さ）Ｈ＝７０ｍｍの、いわゆる、Ａ４サイズに対応する寸法となっている。また、その重量は、装置全体として１．２ｋｇ程度と、比較的軽量に設定されている。即ち、簡易に設置して、投射することが可能となるように設計されている。 In addition, the external dimensions of the above-described projector device are, for example, dimensions corresponding to a so-called A4 size, with (width) W = 265 mm, (depth) D = 200 mm, (height) H = 70 mm There is. In addition, the weight is set to a relatively light weight of about 1.2 kg as a whole. That is, they are designed so that they can be easily installed and projected.
　プロジェクタ装置５からの映像は、例えば、スクリーンや壁面や机やテーブルなどの被投射表面上に投射される。 An image from the projector device 5 is projected on a projection surface such as a screen, a wall surface, a desk or a table, for example.
　そして、投射比が０．２以下（但し、０以上）の図示しない短焦点光学系により、当該装置から映像投射面までの距離が短くても十分に拡大された映像を投射して表示可能な優れた投射性能を確保している。 Then, a short focus optical system (not shown) having a projection ratio of 0.2 or less (0 or more) can project and display a sufficiently enlarged image even if the distance from the device to the image projection surface is short. It has excellent projection performance.
　具体的には、本装置を、映像投射面にその先端部を当接した配置状態で映像の投射を行った場合、３０．５インチ×１９．１インチ(対角３６インチの画面サイズ１６：１０)の画面を得ることができる。 Specifically, when an image is projected in a state where the front end portion of the device is in contact with the image projection surface, the screen size 16 of 30.5 inches × 19.1 inches (36 inches diagonal: 16 inches) You can get the screen of 10).
　次に、図３に前記図１のプロジェクタ５を照明型のプロジェクタ３０とした場合のインタラクティブテーブル並びに投射型映像表示システム構成を示す。図１と同一機能部並びに同一な動作説明は省略する。図３で用いるプロジェクタ３０は、照明機能とプロジェクタ機能の両方を併せ持つプロジェクタである。プロジェクタ映像を投射しない場合は、照明をテーブルに対して灯光する。また、プロジェクタ映像を投射する場合は、前記照明は減光または消灯するように動作する。プロジェクタ１０は、投射面（テーブル表面）に対して投射光軸を垂直な位置関係としている。プロジェクタ３０は、光学的な投射映像の拡大縮小機能あるいは、電子的な拡大縮小機能を有し、投射面に対して、適切な映像サイズにてテーブル面に映像を投射することができる。 Next, FIG. 3 shows the configuration of an interactive table and a projection type video display system in the case where the projector 5 of FIG. The description of the same functional units and the same operations as in FIG. 1 will be omitted. The projector 30 used in FIG. 3 is a projector having both an illumination function and a projector function. When the projector image is not projected, the illumination is turned on the table. Also, when projecting a projector image, the illumination operates to dim or extinguish. The projector 10 has a positional relationship in which the projection optical axis is perpendicular to the projection surface (table surface). The projector 30 has an optical projection image enlargement / reduction function or an electronic enlargement / reduction function, and can project an image on a table surface with an appropriate image size on the projection surface.
　次に、本発明の実施形態の一つであるインタラクティブテーブルと前記テーブルに固定されたプロジェクタを内蔵した照明装置(以下プロジェクタ照明と称す)を組み合せたテーブル付きのプロジェクタ照明１００の外観図を図４に示す。３３はテーブルの天板を、３４はテーブル面に投射した映像を示す。プロジェクタ照明３０をポール３１先端に取り付け、該ポール３１を固定部３２で天板３３に固定し、プロジェクタ照明３０から天板に情報を投射する構成となっている。ここで投射面３４に相当する場所（テーブル）に前記平面座標検出部（以下タッチセンサシート４１と称す）を内蔵することで、テーブル上で投射された情報に対しインタラクティブな操作が可能となる。なお、ここでは記載していないが、プロジェクタ照明３０には、ＬＥＤ素子を使った照明装置が組み込まれ、一般照明としても使うことが可能である。 Next, an external view of a projector illumination 100 with a table combining an interactive table, which is one of the embodiments of the present invention, and an illumination device (hereinafter referred to as a projector illumination) incorporating a projector fixed to the table is shown in FIG. Shown in. Reference numeral 33 denotes a table top, and 34 denotes an image projected on the table surface. The projector illumination 30 is attached to the tip of the pole 31, the pole 31 is fixed to the top plate 33 by the fixing portion 32, and the information is projected from the projector illumination 30 to the top plate. Here, by incorporating the plane coordinate detection unit (hereinafter referred to as the touch sensor sheet 41) in a place (table) corresponding to the projection surface 34, interactive operation can be performed on the information projected on the table. Although not described here, the projector lighting 30 incorporates a lighting device using an LED element, and can also be used as general lighting.
　また、投射映像は矩形の長手方向を横方向として使用することが多いため、図４に示すように前記ポール３１を固定する固定部３２の位置を、投射面３４に対して、投射面３４の矩形の長手方向（図中に矢印で示す）に垂直な方向に位置するテーブル端にすることで、テーブルを囲んで映像を見る人に対してより見やすい環境を提供できる。 In addition, since the projected image is often used with the longitudinal direction of the rectangle as the lateral direction, the position of the fixing portion 32 for fixing the pole 31 relative to the projection surface 34 as shown in FIG. By making the table end positioned in the direction perpendicular to the rectangular longitudinal direction (indicated by the arrow in the figure), it is possible to provide a more visible environment for the viewer of the image by surrounding the table.
　以降インタラクティブテーブルに関して具体的に説明する。前記タッチセンサシート４１を内蔵したテーブルの上面図を図５に示す。天板３３の内部にタッチセンサシート４１を内蔵するものであり、信号授受を行うフレキシブルケーブル４２の部分を天板の面内に穴をあけて、該穴よりフレキシブルケーブル４２をテーブル天板の裏面に回して制御回路を取り付ける構成としている。例えば天板は隠ぺい性の高い色調であって、メラミン塗装などを施した家具調のテーブル面に対し下層に前記タッチセンサシート４１を装着することで、自然なるテーブルでありながら、前記テーブル面をインタラクション操作面としている。 The following specifically describes the interactive table. A top view of a table incorporating the touch sensor sheet 41 is shown in FIG. The touch sensor sheet 41 is built in the inside of the top plate 33, and a portion of the flexible cable 42 for transmitting and receiving signals is bored in the surface of the top plate, and the flexible cable 42 is used as the back surface of the table top plate from the hole. The control circuit is attached to turn. For example, the top plate has a color tone with high concealment, and by attaching the touch sensor sheet 41 to a lower layer to a furniture-like table surface with melamine coating etc., the table surface interacts while being a natural table. It is considered as the operation side.
　図５に示すように、テーブル面形状は円形状を成し、円形テーブル面に内接してタッチセンサシート４１を配置している。ここでは、円形のテーブルに内接した矩形のタッチセンサシート４１を用いたが、テーブルはどのような形状であっても良く、またタッチセンサシート４１はテーブル内に包含できれば、円形であっても良い。 As shown in FIG. 5, the table surface has a circular shape, and the touch sensor sheet 41 is disposed inscribed in the circular table surface. Although a rectangular touch sensor sheet 41 inscribed in a circular table is used here, the table may have any shape, and the touch sensor sheet 41 may be circular as long as it can be included in the table. good.
　また、テーブル面の所定位置に所定面積のタッチセンサシートを部分的に配置しても良い。また、タッチセンサシート４１のアスペクト比は特に限定される必要はない。タッチセンサシート４１の詳細の取り付け方法に関しては、図１２、図１３で説明する。ここでは天板３３とタッチセンサシート４１の位置関係を説明する。 Further, the touch sensor sheet having a predetermined area may be partially disposed at a predetermined position on the table surface. Further, the aspect ratio of the touch sensor sheet 41 does not have to be particularly limited. The attachment method of the details of the touch sensor sheet 41 will be described with reference to FIGS. 12 and 13. Here, the positional relationship between the top 33 and the touch sensor sheet 41 will be described.
　ここで、テーブル内部に静電型タッチセンサシートを内蔵する際に必要な条件を示す。まず、テーブルの天板としての強度が必要であり、厚さとして例えば３０ｍｍ以上は必要となる。部材の候補に関して以下に説明する。まず木材の場合は、乾燥しているときの誘電率εは２～４程度であるが、吸水すると誘電率εが大きくなるため静電型タッチセンサシートに対しては不安定な状態を作り出すことになる。また、表面の凹凸が大きいため、静電型タッチセンサシートとの間の間隙が場所によって変化しやすく、空気層による静電容量の変化も生じてしまい、静電型タッチシートの下に直接木材を配置した場合、安定したタッチセンシングが難しくなる。 Here, conditions necessary for incorporating the electrostatic touch sensor sheet in the table will be shown. First, the table top needs to have a strength, and a thickness of, for example, 30 mm or more is required. The candidate members will be described below. First, in the case of wood, the dielectric constant ε is about 2 to 4 when it is dry, but when it absorbs water, the dielectric constant ε becomes large, so an unstable state is created for the electrostatic touch sensor sheet. become. In addition, since the surface unevenness is large, the gap with the electrostatic touch sensor sheet is likely to change depending on the location, and the capacitance changes due to the air layer, and wood directly under the electrostatic touch sheet Stable touch sensing becomes difficult.
　一方、アクリルやポリカーボネートなどの合成樹脂は、誘電率εは、例えば２．７（アクリル）／２．９（ポリカ）であり、木材と異なりほぼ一定の誘電率を有する一方、表面の凹凸が少なく、静電型タッチセンサシートとの間の間隙は比較的均一化にでき、場所による静電容量のばらつきが抑えられる。但し、直接天板として用いた場合は、表面強度が弱く、傷が付きやすいためテーブルの天板の最上面の部材としては向かない。そこで凹凸の少ないアクリル樹脂の上に傷の付きにくい部材を貼ることで上記課題を解決できる。 On the other hand, synthetic resins such as acrylics and polycarbonates have a dielectric constant ε of, for example, 2.7 (acrylic) /2.9 (polyca) and, unlike wood, have a substantially constant dielectric constant while having few surface irregularities. The gap between the electrostatic touch sensor sheet and the electrostatic touch sensor sheet can be made relatively uniform, and the variation in capacitance due to the location can be suppressed. However, when used directly as a top plate, the surface strength is weak and easily scratched, so it is not suitable as a top surface member of the top plate of the table. Then, the said subject is solvable by sticking the member which is hard to get a scratch on acrylic resin with few unevenness | corrugations.
　しかしながら、図９、図１０で説明するように誘電率が低い部材を用いると、指が触れたときの電荷の変化量が少なくなり、判別しにくくなるため、誘電率がある程度高く、かつ、傷が付きにくい、もしくは目立ちにくい素材を貼る必要がある。テーブルの表面に使用される部材の中にメラミン樹脂があるが、誘電率εが約７と比較的高いため、静電容量を大きく保てるため指が触れたときの電荷の変化量を確保することが可能であり、判別性能への影響を抑えられる。また傷に強い素材で、かつ、表面の拡散性が強いため、プロジェクタから映像を投射するのに向いている。以上の理由から、タッチセンサシートの上の部材として、図６に示すような基本構成とする。 However, if a member having a low dielectric constant is used as described with reference to FIGS. 9 and 10, the amount of change in electric charge when a finger is touched decreases and it becomes difficult to distinguish. It is necessary to put a material that is hard to stick or hard to notice. Among the members used on the surface of the table is melamine resin, but since the dielectric constant ε is relatively high at about 7, the amount of change in charge when a finger is touched is secured to maintain a large capacitance. Can be used to reduce the impact on discrimination performance. In addition, since it is a scratch-resistant material and the surface has a high degree of diffusion, it is suitable for projecting an image from a projector. From the above reasons, a member on the touch sensor sheet has a basic configuration as shown in FIG.
　次に、テーブル内部に積層する部材構成について詳細に説明する。図５に示したテーブル天板３３の破線に沿った断面の模式図を図６に示す。天板上面から順に、メラミン樹脂４５、アクリル樹脂もしくはポリカーボネート樹脂４６、静電型タッチセンサシート４８、絶縁材料５０が順に配置されており、木材４７、５１、５２がこれらを囲うように配置されている。上記に説明したように、静電型タッチセンサシート４８の上部には表面の凹凸が少ないアクリル樹脂製のシート４６を載せ、その上部にメラミン樹脂製のシート４５を貼り合わせる。このとき、強度を保つために樹脂部材層で３０ｍｍの厚さを確保する。 Next, the member configuration to be stacked inside the table will be described in detail. The schematic diagram of the cross section which followed the broken line of the table top plate 33 shown in FIG. 5 is shown in FIG. Melamine resin 45, acrylic resin or polycarbonate resin 46, electrostatic touch sensor sheet 48, and insulating material 50 are disposed in order from the top of the top plate, and wood 47, 51, 52 is disposed to surround them. There is. As described above, an acrylic resin sheet 46 with few surface irregularities is placed on the top of the electrostatic touch sensor sheet 48, and a melamine resin sheet 45 is bonded on the top. At this time, in order to maintain the strength, a thickness of 30 mm is secured by the resin member layer.
　具体的には、比較的誘電率の低いアクリル樹脂（ε＝２．７）の厚さを２０ｍｍ、比較的誘電率の高いメラミン樹脂（ε＝７）の厚さを１０ｍｍとした。このように、まず、当該３０ｍｍの厚さに含まれる複数の樹脂の層のうち、指が触れる天板表面側の第１の樹脂部材を比較的誘電率の高いメラミン樹脂とし、指が触れない側の下層の第２の樹脂部材を比較的誘電率の低いアクリル樹脂とし、更に、天板表面側の第１の樹脂部材の厚さを、下層の第２の樹脂部材の厚さよりも小さくすることで、指の接触判別性能をより好適にする構成を実現できる。 Specifically, the thickness of a relatively low dielectric constant acrylic resin (ε = 2.7) was 20 mm, and the thickness of a relatively high dielectric constant melamine resin (ε = 7) was 10 mm. As described above, first, among the plurality of resin layers included in the thickness of 30 mm, the first resin member on the top plate surface side touched by the finger is a melamine resin having a relatively high dielectric constant, and the finger does not touch The lower second resin member on the side is made of acrylic resin having a relatively low dielectric constant, and the thickness of the first resin member on the top plate surface side is made smaller than the thickness of the lower second resin member This makes it possible to realize a configuration that makes the contact determination performance of the finger more suitable.
　また、木材４７、５１、５２で覆われているテーブルはテーブル脚を含め必ずしも接地されていないため、直接木材５２の上に静電型タッチセンサシート４８を置いた場合、静電型タッチセンサシート４８の電荷が不安定になり、性能の良いタッチ性能が得られない。それを回避するために絶縁材料５０を配置し静電型タッチセンサシート４８を安定に動作させることが可能となる。 Also, since the table covered with wood 47, 51, 52 is not necessarily grounded including the table legs, when the electrostatic touch sensor sheet 48 is placed directly on the wood 52, the electrostatic touch sensor sheet The 48 charges become unstable, and good touch performance can not be obtained. In order to avoid that, it becomes possible to arrange the insulating material 50 and operate the electrostatic touch sensor sheet 48 stably.
　一方、上記に説明したように、静電型タッチセンサシート４８の上部に配置するアクリル樹脂４６とメラミン樹脂４５を貼り合わせた厚さ３０ｍｍの天板上部の反りなどが発生した場合の安定動作の確保について図７（Ａ）、（Ｂ）を用いて説明する。図７に示すように、アクリル樹脂４６とメラミン樹脂４５を貼り合わせた部材（天板上部）が反った場合に、天板上部と静電型タッチセンサシート４８間の密着性が損なわれる。図では周辺で間隙が増加するため空気層による静電容量が発生し、テーブル４の中央と端で感度が変わり、安定したタッチ操作性が得られない。 On the other hand, as described above, the stable operation in the case where the upper portion of the top plate with a thickness of 30 mm formed by bonding the acrylic resin 46 and the melamine resin 45 disposed on the upper portion of the electrostatic touch sensor sheet 48 occurs. Securing will be described with reference to FIGS. 7A and 7B. As shown in FIG. 7, when the member (upper part of the top plate) obtained by bonding the acrylic resin 46 and the melamine resin 45 is warped, the adhesion between the upper part of the top plate and the electrostatic touch sensor sheet 48 is impaired. In the figure, since the gap increases in the periphery, capacitance due to the air layer is generated, the sensitivity changes between the center and the end of the table 4, and stable touch operability can not be obtained.
　そこで、本発明の実施の形態では、図７（Ｂ）に示すように静電型タッチセンサシート４８の下面にクッション材（弾性部材）４９を配置する。この配置によりクッション材（弾性部材）４９が静電型タッチセンサシート４８をアクリル樹脂４６に対して押圧することになる。これにより、例えば、天板のゆがみなどにより、アクリル樹脂４６と絶縁材料５０との間隔が部分的に不均一である場合や、経年変化した場合でも、静電型タッチセンサシート４８とアクリル樹脂４６との密着性を保つことが可能であり、安定したタッチ操作性を実現するものである。図８（Ａ）にテーブル４に積層する部材の構成、（Ｂ）にテーブル４に組み込んだ後の断面図を示す。 Therefore, in the embodiment of the present invention, as shown in FIG. 7B, a cushioning material (elastic member) 49 is disposed on the lower surface of the electrostatic touch sensor sheet 48. By this arrangement, the cushioning material (elastic member) 49 presses the electrostatic touch sensor sheet 48 against the acrylic resin 46. Thereby, for example, even when the interval between the acrylic resin 46 and the insulating material 50 is partially uneven due to the distortion of the top plate, or when aged, the electrostatic touch sensor sheet 48 and the acrylic resin 46 are used. It is possible to maintain close contact with it and to realize stable touch operability. The structure of the member laminated | stacked on the table 4 at FIG. 8 (A), and sectional drawing after incorporating in the table 4 at (B) are shown.
　次に静電型タッチセンサシートにおいて指先が触れた場所の位置検出方法について図９（Ａ）、（Ｂ）を用いて説明する。図９（Ａ）は静電型タッチセンサの等価回路を示したもので、静電型タッチセンサは誘電体６１と電極６０で構成されコンデンサＣ０６２（容量値Ｃ０）に電荷が蓄積される。また、誘電体６１に指６４が触れるとコンデンサＣ１－６５（容量値Ｃ１）が構成され、コンデンサＣ０－６２の電荷がコンデンサＣ１－６５に移動し、その変化量を検出することで指６４が触れた位置を検出するものである。例えば電極６０が抵抗６３（抵抗値Ｒ）を介して電源に接続されている場合に指６４が触れた位置の電荷の変化を図９（Ｂ）に示す。縦軸に電荷、横軸に時間の経過を示す。 Next, a method of detecting the position of the place touched by the fingertip in the electrostatic touch sensor sheet will be described with reference to FIGS. 9A and 9B. FIG. 9A shows an equivalent circuit of an electrostatic touch sensor. The electrostatic touch sensor includes a dielectric 61 and an electrode 60, and charges are accumulated in a capacitor C062 (capacitance value C0). Also, when the finger 64 touches the dielectric 61, the capacitor C1-65 (capacitance value C1) is formed, the charge of the capacitor C0-62 moves to the capacitor C1-65, and the finger 64 detects the amount of change. It detects the touched position. For example, when the electrode 60 is connected to the power supply via the resistor 63 (resistance value R), a change in charge at a position touched by the finger 64 is shown in FIG. 9B. The ordinate represents the charge, and the abscissa represents the passage of time.
　初期の時点(０～Ｔ１)ではコンデンサＣ０６２に電荷Ｑ０が蓄積されており、指６４が触れた時刻Ｔ１でコンデンサＣ０６２に蓄積された電荷Ｑ０はコンデンサＣ１-６５に移動し、その結果コンデンサＣ０-６２の電荷がＱ０’まで時定数ＣＲで低下する。電荷の変化を判断するための閾値Ｑｔｈで、閾値より電荷が低下した場合に指６４が触れたことを判別し、静電型タッチセンサシート上に指６４が触れた位置を認識する。 At the initial time point (0 to T1), the charge Q0 is stored in the capacitor C062, and at the time T1 when the finger 64 touches, the charge Q0 stored in the capacitor C062 moves to the capacitor C1-65, resulting in the capacitor C0 The charge of 62 decreases with time constant CR to Q0 '. A threshold Qth for determining a change in charge determines that the finger 64 is touched when the charge is lower than the threshold, and recognizes the position where the finger 64 is touched on the electrostatic touch sensor sheet.
　次に各部材の容量値を用い、電荷の変化について具体的に説明する。指６４が触れるエリアを約１ｃｍ２と想定した場合、１ｃｍ２の領域で静電型タッチセンサが有する容量値を３０ｐＦと仮定する。一般に人体が持つ容量は約１００ｐＦと言われており、図９に示すように誘電体６１に指６４が直接触れた場合にコンデンサＣ０６２に蓄積される電荷は、下式の通り２３％低下したＱ０’となり、閾値Ｑｔｈで十分に判別できることが分かる。
　ＱＯ’＝Ｑ０×Ｃ０／（Ｃ０＋Ｃ１）＝０．２３Ｑ０ Next, the change in charge will be specifically described using the capacitance value of each member. Assuming the area of the finger 64 touches about 1 cm 2, it is assumed that 30pF the capacitance value with the electrostatic touch sensor in a 1 cm 2 area. Generally, the capacitance of the human body is said to be about 100 pF, and the charge stored in the capacitor C062 when the finger 64 directly touches the dielectric 61 as shown in FIG. It can be seen that the threshold value Qth can be sufficiently determined.
QO ′ = Q0 × C0 / (C0 + C1) = 0.23Q0
　次に、図８に示した部材の構成での電荷の変化を図１０（Ａ）（Ｂ）を用いて説明する。図１０（Ａ）は静電型タッチセンサの誘電体の上に更に２種の部材が重畳し、それらを介して指が触れた場合の等価回路を示す。静電型タッチセンサシート４８と接するアクリル樹脂４６とその上に貼られたメラミン樹脂４５が有する容量をコンデンサＣ２－６６（容量値Ｃ２）、コンデンサＣ３－６７（容量値Ｃ３）で表す。
　一般に静電型タッチセンサ部材の持つ容量Ｃは下記の式で示せる。
　Ｃ＝ε×Ｓ／Ｔ　（ε：誘電率、Ｓ：面積、Ｔ：厚さ） Next, the change in charge in the configuration of the members shown in FIG. 8 will be described with reference to FIGS. 10 (A) and 10 (B). FIG. 10A shows an equivalent circuit in the case where two kinds of members are further superimposed on the dielectric of the electrostatic touch sensor and the finger is touched via them. The capacitance of the acrylic resin 46 in contact with the electrostatic touch sensor sheet 48 and the melamine resin 45 pasted thereon is represented by a capacitor C2-66 (capacitance value C2) and a capacitor C3-67 (capacitance value C3).
Generally, the capacitance C of the electrostatic touch sensor member can be expressed by the following equation.
C = ε × S / T (ε: dielectric constant, S: area, T: thickness)
　アクリル樹脂４６の誘電率εは約２．７でありＣ２＝２．７×１ｃｍ２／０．２ｃｍ＝１３．５ｐＦ、メラミン樹脂の誘電率εは高く約７でありＣ３＝７×１ｃｍ２／０．１ｃｍ＝７０ｐＦとなる。コンデンサＣ１，Ｃ２，Ｃ３が直列接続されるため、その直列容量は約２０ｐＦとなる。その場合、静電型タッチセンサの保持している電荷は初期状態のＱ０から約６０％のＱ０’’（＝０．６Ｑ０）に低下し、それに伴い閾値を上げる必要がある。 The dielectric constant ε of the acrylic resin 46 is about 2.7 and C2 = 2.7 × 1 cm 2 /0.2 cm = 13.5 pF. The dielectric constant ε of the melamine resin is high and about 7 and C 3 = 7 × 1 cm 2 / It becomes 0.1 cm = 70 pF. Since the capacitors C1, C2 and C3 are connected in series, their series capacitance is about 20 pF. In that case, the charge held by the electrostatic touch sensor drops from Q0 in the initial state to about Q0 '' (= 0.6Q0) of about 60%, and it is necessary to raise the threshold accordingly.
　発明者らは、上記の条件で静電型タッチセンサの判別性能を確認したところ、安定した判別ができることを確認している。上記の通り、静電型タッチセンサの容量３０ｐＦに対して静電型タッチセンサの上部に積層する部材の容量が、例えば１割程度の容量値になったとすると、変化量も１割程度になり変化を判別するのが難しくなることが分かる。 The inventors confirmed the discrimination performance of the electrostatic touch sensor under the above conditions, and confirmed that stable discrimination can be performed. As described above, if the capacitance of the member stacked on the upper part of the electrostatic touch sensor is 30% of the capacitance of the electrostatic touch sensor, for example, the capacitance value is about 10%, the change amount is also about 10% It turns out that it is difficult to determine the change.
　次に、テーブル４の内部に内蔵した静電型タッチセンサシート４８のセンシング領域を明確にするための実施の形態を図１１に示す。ここでは例えば、タッチセンサシート４１のアスペクト比は１６：９とする。隠ぺい性の高いテーブル天面の下層にタッチセンサシート４１を備えていることから、タッチセンサシート４１の有効範囲を目視で把握することは困難である。プロジェクタ５または３０から投射した映像上でインタラクティブ操作を実現するには、投射したプロジェクタ映像とタッチセンサシート４１の領域を一致させる必要がある。 Next, an embodiment for clarifying the sensing area of the electrostatic touch sensor sheet 48 built in the inside of the table 4 is shown in FIG. Here, for example, the aspect ratio of the touch sensor sheet 41 is 16: 9. Since the touch sensor sheet 41 is provided in the lower layer of the table top surface having high concealability, it is difficult to visually grasp the effective range of the touch sensor sheet 41. In order to realize the interactive operation on the image projected from the projector 5 or 30, it is necessary to make the area of the projected projector image and the area of the touch sensor sheet 41 coincide with each other.
　このため、プロジェクタ５または３０から映像をテーブル天面へ投射する際に、タッチセンサシート４１の有効範囲を操作者が把握するためのマーキングが必要となる。そこで、例えば、テーブル４内のタッチセンサシート４１の４点の角位置にマーク（図１１中の３６から３９）を付けることで、プロジェクタ５または３０からテーブル天面へ投射する領域を把握することができる。 Therefore, when projecting an image from the projector 5 or 30 onto the table top surface, marking for the operator to grasp the effective range of the touch sensor sheet 41 is required. Therefore, for example, by putting marks (36 to 39 in FIG. 11) at four angular positions of the touch sensor sheet 41 in the table 4, the area projected from the projector 5 or 30 onto the table top surface can be grasped. Can.
　しかしながら、テーブル天面のマークを刻印あるいは印刷すると外観を損なうため、前記テーブル天面のマークとして、例えば、図１１のテーブル天面とタッチセンサシート４１よりも下層、かつ、タッチセンサシート４１のコーナ４点に対応したＬＥＤ４３、４４（他に図示しないＬＥＤが２個ある）を備る。電源８０より前記４個のＬＥＤへ電流を供給することでＬＥＤを発光させ、テーブル天面にタッチセンサシート４１のコーナ４点を光らせることができ、テーブル天面の下層にあるタッチセンサシート４１の位置を把握することができる。 However, the appearance of the mark on the table top surface is impaired if printed or printed on the table top surface, and the table top surface of the table top surface and the lower portion of the touch sensor sheet 41 in FIG. It has LEDs 43 and 44 (there are two other LEDs not shown) corresponding to the four points. By supplying current to the four LEDs from the power supply 80, the LEDs can be made to emit light, and the four corners of the touch sensor sheet 41 can be illuminated on the table top surface, and the touch sensor sheet 41 below the table top surface You can know the position.
　この際のテーブル天面の素材は、完全なる隠ぺい性の素材ではなく、例えば、前記ＬＥＤの光をわずかに通過させる隠ぺい性（例えば隠ぺい性８０％）を採用することで実現できる。また、テーブル天面の下層にあるタッチセンサシート４１の位置を把握する別の方法として、テーブル天面の横エッジに４点のマーク（例えば刻印、印字、凹凸）をつけても良い。こうすることで、プロジェクタ５または３０からの投射映像を、タッチセンサシート４１内での投射映像サイズの拡大、縮小操作にて概略の位置合せを行うことができる。 The material of the top surface of the table at this time can be realized not by a completely concealed material but by, for example, adopting a concealability (for example, 80% concealment) which allows the light of the LED to slightly pass. Further, as another method of grasping the position of the touch sensor sheet 41 in the lower layer of the table top surface, four marks (for example, marking, printing, unevenness) may be provided on the side edges of the table top surface. In this way, the projected image from the projector 5 or 30 can be roughly aligned by an operation of enlarging or reducing the size of the projected image in the touch sensor sheet 41.
　なお、タッチセンサシート４１の有効範囲が矩形であれば、上記マークは少なくとも該矩形の対角の頂点の２つの位置に付加すれば、操作者は、タッチセンサシート４１の有効範囲を認識することが可能となる。 If the effective range of the touch sensor sheet 41 is rectangular, the operator recognizes the effective range of the touch sensor sheet 41 if the above marks are added to at least two positions of the apex of the diagonal of the rectangle. Is possible.
　次に、テーブル４に内蔵した静電型タッチセンサシート４８の端末処理の仕方について図１２、図１３を用いて説明する。図１２は静電型タッチセンサシート４８の端に位置する制御基板を、フレキシブル配線を介してテーブルの背面に設置する構成を示す。７０がテーブルの天板を構成する部品、７１が静電型タッチセンサシート、７２がテーブルの裏面を構成する木材、７３が制御基板、７４が制御基板等を覆う筺体、７５が制御基板を取り付ける構造部品、７６がタッチセンサシートのフレキシブル配線部を示す。フレキシブル配線部分を筺体内に納めることで回路動作の安定性を確保できる一方、筺体に必要なインターフェース（給電用のUSBケーブルなど）を配置することで、外部ＰＣなどとの接続を簡単に行える。図１３は、テーブルの天板を裏面から見たときの、各部材の構成を示したものであり、各符号は、図１２の番号と同一である。 Next, a method of terminal processing of the electrostatic touch sensor sheet 48 built in the table 4 will be described with reference to FIGS. 12 and 13. FIG. 12 shows a configuration in which the control substrate located at the end of the electrostatic touch sensor sheet 48 is installed on the back of the table via flexible wiring. 70 is a component constituting the top plate of the table, 71 is an electrostatic touch sensor sheet, 72 is a wood constituting the back of the table, 73 is a control board, 74 is a case covering a control board etc., 75 is a control board Structural parts, 76 shows a flexible wiring portion of the touch sensor sheet. Stability of the circuit operation can be secured by housing the flexible wiring portion in the housing, while connection with an external PC or the like can be easily performed by arranging the necessary interface (a USB cable for feeding etc.) on the housing. FIG. 13 shows the configuration of each member when the top plate of the table is viewed from the back, and each reference numeral is the same as the number in FIG.
　これによれば、手書き入力時において、指先を使用する場合と、ペンを使用する場合とで、異なる感度で入力が行われることから、手書き入力の種類に応じた好適な書き込みを実現することが可能となる。 According to this, at the time of handwriting input, since input is performed with different sensitivities in the case of using a fingertip and the case of using a pen, it is possible to realize suitable writing according to the type of handwriting input. It becomes possible.
　上記にも詳述したように、本発明一実施の形態であるインタラクティブテーブル投射型映像表示システムによれば、机上投射が可能な短焦点プロジェクタとそれに接続されるパソコン等を組み合せることで、スクリーン機能を持つテーブル上で簡単に映像を投射でき、かつ、これまでスマートホンやタブレットなどで行ってきたインタラクティブ操作を大画面上で実現でき、複数の人間で情報を共有できるシステムを実現できる。また、硬質なテーブル表面を持つことによって、インタラクティブ操作の他に、テーブル上で紙面に文字を書いたり、お茶や食事をするなど従来のテーブルの機能も同時に有することができる。 As described above in detail, according to the interactive table projection type image display system according to the embodiment of the present invention, a screen can be obtained by combining a short focus projector capable of desktop projection with a personal computer connected thereto or the like. An image can be easily projected on a table having a function, and an interactive operation performed so far with a smartphone or tablet can be realized on a large screen, and a system in which information can be shared by a plurality of persons can be realized. Moreover, by having a hard table surface, in addition to interactive operation, it is also possible to simultaneously have the function of a conventional table such as writing characters on paper, eating tea and tea on the table.
　以上、本発明の実施の形態について種々述べたが、本発明は上記した実施の形態に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施の形態は静電型タッチセンサシートをテーブルに内蔵したインタラクティブテーブルを例に説明したが、脚を持たないインタラクティブスクリーンにも応用できるものである。また、本発明では、テーブルに組み込んだ各部材を限定して説明したが、その特徴（表面の凹凸性能、誘電率、傷への耐性など）がほぼ一致する部材に置き換えることも可能である。 As mentioned above, although variously described about the embodiment of the present invention, the present invention is not limited to the above-mentioned embodiment, and various modifications are included. For example, although the above-mentioned embodiment explained the interactive table which built the electrostatic touch sensor sheet in the table as an example, it can apply also to the interactive screen which does not have a leg. Further, in the present invention, each member incorporated in the table has been described in a limited manner, but it is also possible to replace it with a member having substantially the same characteristics (surface unevenness performance, dielectric constant, scratch resistance, etc.).
　１…平面座標検出部、４…インタラクティブテーブル、５…プロジェクタ（投射型映像表示装置）、６…映像信号生成部、７…座標調整部、８…制御部、９…Ｘ座標検出まとめ配線部、１０…Ｙ座標検出まとめ配線部、１１…センサ信号生成部、１５…Ｘ座標静電検出センサ、１６…Ｙ座標静電検出センサ、１９…平面座標検出信号、３０…照明型プロジェクタ、３３,７０…テーブル天板、４５…メラミン樹脂、４６…アクリル樹脂、４８，７１…静電型タッチセンサシート、５０…絶縁材料、４９…クッション材(弾性部材)、４７，５１，５２…木材、６０…電極、６１…誘電体、６４…指、６２，６５，６６，６７…コンデンサ、６３…抵抗、７６…フレキシブル配線部、７３…制御基板、７４…筺体、７５…基板取り付け構造部品、１００…インタラクティブテーブル付きプロジェクタ照明。 DESCRIPTION OF SYMBOLS 1 ... Plane | planar coordinate detection part, 4 ... Interactive table, 5 ... Projector (projection type video display apparatus), 6 ... Video signal production | generation part, 7 ... Coordinate adjustment part, 8 ... Control part, 9 ... X coordinate detection summary wiring part, DESCRIPTION OF SYMBOLS 10 ... Y coordinate detection summary wiring part, 11 ... sensor signal generation part, 15 ... X coordinate electrostatic detection sensor, 16 ... Y coordinate electrostatic detection sensor, 19 ... plane coordinate detection signal, 30 ... illumination type projector, 33, 70 ... Table top plate, 45 ... Melamine resin, 46 ... Acrylic resin, 48, 71 ... Electrostatic touch sensor sheet, 50 ... Insulating material, 49 ... Cushion material (elastic member), 47, 51, 52 ... Wood, 60 ... Electrodes 61: dielectrics, 64: fingers, 62, 65, 66, 67: capacitors, 63: resistances, 76: flexible wiring portions, 73: control boards, 74: housings, 75: board mounting structure parts, 00 ... projector lighted interactive table.

Claims (13)

  1. 　映像を投射する投射型映像表示装置と、
    　前記映像が投射されるスクリーン面と、
    　前記スクリーン面の下部に配置されるタッチセンサシートと、を備え、
    　前記スクリーン面へのユーザのタッチを検出するタッチセンサシートからの出力に応じて前記投射型映像表示装置が投射する前記映像の内容を変更する、投射型映像表示システム。     A projection-type image display device that projects an image;
    A screen surface on which the image is projected;
    And a touch sensor sheet disposed below the screen surface,
    The projection type video display system which changes the content of the said image which the said projection type video display apparatus projects according to the output from the touch sensor sheet | seat which detects the user's touch to the said screen surface.
  2. 　請求項１に記載の投射型映像表示システムにおいて、
    　前記タッチセンサシートから出力される位置情報を投射される前記映像の座標と対応付けを行って座標情報を生成する座標調整部と、
    　映像信号を生成する映像信号生成部と、
    　制御部と、を備え、
    　前記制御部は、前記座標調整部が生成した座標情報に応じて、前記映像信号生成部が生成する前記映像を変更する制御を行う、投射型映像表示システム。     In the projection type video display system according to claim 1,
    A coordinate adjustment unit that generates coordinate information by associating positional information output from the touch sensor sheet with coordinates of the projected image;
    A video signal generation unit that generates a video signal;
    And a control unit,
    The projection type video display system, wherein the control unit performs control of changing the video generated by the video signal generation unit according to the coordinate information generated by the coordinate adjustment unit.
  3. 　請求項１または２に記載の投射型映像表示システムにおいて、
    　前記スクリーン面を、前記タッチセンサシートが内蔵されたテーブルの天板により構成した、投射型映像表示システム。     The projection type video display system according to claim 1 or 2
    The projection type video display system which comprised the said screen surface by the top plate of the table in which the said touch sensor sheet was incorporated.
  4. 　請求項３に記載の投射型映像表示システムにおいて、
    　前記テーブルの天板の上部の位置に前記投射型映像表示装置を支柱を介して固定し、
    　前記タッチセンサシートのセンシング範囲を前記映像の投射範囲と概ね一致もしくは、前記タッチセンサシートのセンシング範囲を前記映像の投射範囲よりも大きくした、投射型映像表示システム。     In the projection type video display system according to claim 3,
    The projection type image display apparatus is fixed at a position above the top plate of the table via a support,
    The projection type video display system which made the sensing range of the said touch sensor sheet | seat substantially correspond with the projection range of the said imaging | video, or made the sensing range of the said touch sensor sheet | seat larger than the projection range of the said imaging | video.
  5. 　請求項３または４に記載の投射型映像表示システムにおいて、
    　前記テーブルはその天板の上面側から順に、樹脂部材層、前記タッチセンサシート、弾性部材、絶縁部材が重ねられて配置されている、投射型映像表示システム。     In the projection type video display system according to claim 3 or 4,
    The projection type video display system in which the resin member layer, the touch sensor sheet, the elastic member, and the insulating member are sequentially stacked from the upper surface side of the top plate.
  6. 　請求項５に記載の投射型映像表示システムにおいて、
    　前記樹脂部材層は、前記天板の上面を形成する第１の樹脂部材と、前記第１の樹脂部材の下面に貼り合される第２の樹脂部材とが積層されており、前記第２の樹脂部材の下面と前記タッチセンサシートとが接するように配置されている、投射型映像表示システム。     In the projection type video display system according to claim 5,
    In the resin member layer, a first resin member forming the upper surface of the top plate and a second resin member bonded to the lower surface of the first resin member are stacked, and the second The projection type video display system arrange | positioned so that the lower surface of the resin member and the said touch sensor sheet may contact | connect.
  7. 　請求項６に記載の投射型映像表示システムにおいて、
    　前記第１の樹脂部材は、前記第２の樹脂部材よりも静電容量が大きい、投射型映像表示システム。     In the projection type video display system according to claim 6,
    The projection-type image display system, wherein the first resin member has a capacitance larger than that of the second resin member.
  8. 　請求項６に記載の投射型映像表示システムにおいて、
    　前記第１の樹脂部材の厚さは、前記第２の樹脂部材の厚さよりも小さい、投射型映像表示システム。     In the projection type video display system according to claim 6,
    The projection type video display system whose thickness of the said 1st resin member is smaller than the thickness of the said 2nd resin member.
  9. 　請求項５～８のいずれか一項に記載の投射型映像表示システムにおいて、
    　前記樹脂部材層の下面と前記絶縁部材の上面との間隔が少なくとも部分的に不均一である場合、または前記間隔が経時的に変化した場合でも、前記タッチセンサシートと前記樹脂部材層の下面の接触が維持されるように、前記弾性部材が前記タッチセンサシートを前記樹脂部材層側に押圧するように配置されている、投射型映像表示システム。     The projection type video display system according to any one of claims 5 to 8,
    When the distance between the lower surface of the resin member layer and the upper surface of the insulating member is at least partially nonuniform, or even when the distance changes with time, the touch sensor sheet and the lower surface of the resin member layer The projection-type image display system, wherein the elastic member is disposed to press the touch sensor sheet toward the resin member layer so as to maintain contact.
  10. 　請求項１～９のいずれか一項に記載の投射型映像表示システムにおいて、
    　前記タッチセンサシートを静電型のセンサで構成した、投射型映像表示システム。     The projection type video display system according to any one of claims 1 to 9,
    The projection type video display system which comprised the said touch sensor sheet | seat by the sensor of electrostatic type.
  11. 　請求項３～１０のいずれか一項に記載の投射型映像表示システムにおいて、
    　前記テーブルの天板上面に前記タッチセンサシートの有効範囲の少なくとも２つの頂点の位置を認識するマークを付加した、投射型映像表示システム。     The projection type video display system according to any one of claims 3 to 10,
    The projection type video display system which added the mark which recognizes the position of the at least 2 vertex of the effective range of the said touch sensor sheet | seat on the top-plate upper surface of the said table.
  12. 　請求項５～１０のいずれか一項に記載の投射型映像表示システムにおいて、
    　前記樹脂部材層を光を少なくとも部分的に透過する光透過性部材で構成し、
    　前記テーブルの天板の内部に、前記光透過性部材を透過する光を発する光源を設置し、
    　前記光源の発する光を用いて、前記タッチセンサシートの有効範囲をユーザに伝達する、投射型映像表示システム。     The projection type video display system according to any one of claims 5 to 10,
    The resin member layer is composed of a light transmitting member which transmits light at least partially,
    Inside the top plate of the table, a light source emitting light passing through the light transmitting member is installed;
    The projection type video display system which transmits the effective range of the said touch sensor sheet to a user using the light which the said light source emits.
  13. 　請求項４～１２のいずれか一項に記載の投射型映像表示システムにおいて、
    　前記タッチセンサシートの有効範囲は略矩形であり、
    　前記支柱はその一端が、テーブルの側面の取り付け位置に、取り付け部材により固定され、他端が前記テーブルの天板の上部に前記投射型映像表示装置を固定する構造で、
    　前記取り付け部材は、前記テーブル側面のうち、前記タッチセンサシートの有効範囲に対して前記矩形の長手方向に対して垂直の方向に位置する部分の位置に設置する、投射型映像表示システム。     The projection type video display system according to any one of claims 4 to 12.
    The effective range of the touch sensor sheet is substantially rectangular,
    The support is fixed at one end thereof at a mounting position of the side of the table by a mounting member, and the other end is fixed to the projection type video display on the top of the top plate of the table.
    The projection type video display system, wherein the mounting member is installed at a position of a portion of the side surface of the table that is located in a direction perpendicular to the longitudinal direction of the rectangle with respect to the effective range of the touch sensor sheet.
PCT/JP2017/023588 2017-06-27 2017-06-27 Projection image display system WO2019003304A1 (en)

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