JP2012212410A - Information display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display system capable of performing an input with a normal writing tool and, even when a large-sized display is used, performing a precise input corresponding to a display of the large-sized display.SOLUTION: An information display system comprises a computer PC, a large-sized display D1, and optical input means S, which includes at least one pair of a light emitting element and a light receiving element mounted on a rectangular frame 1, for detecting a blockage of light that reaches from the light emitting element to the light receiving element and is generated in accordance with an input object in the frame 1 so as to output position information on the input object in the frame 1. When performing writing of a memorandum on a desired part with a writing tool P on the basis of a printed mark of a printing object W that is exposed from the frame of the optical input means S, new information such as the memorandum can be superimposingly displayed on an appropriate position corresponding to the current display on the large-sized display D1.

Description

  The present invention relates to an information display system used to display information such as materials during a presentation or a meeting.

  In presentations and conferences, information such as documents stored in advance in an information storage medium such as a USB memory is displayed on a large display such as a liquid crystal panel using a computer, etc., and the displayed documents, etc. The explanation will be given. In the explanation, a pen-type input device such as a tablet or a touch panel is used as input means (apparatus) in order to add new information such as characters, diagrams and marks to the displayed materials. (For example, refer to Patent Document 1).

  The pen-type input device includes a dedicated pen and a dedicated board, and information such as characters can be input by moving the dedicated pen on the dedicated board. In other words, the locus of the tip of the dedicated pen on the dedicated board (input information such as characters) is detected using electromagnetic induction, resistive film method, capacitance method, etc., and the locus (electronic data) As new information, it can be displayed superimposed on information (images) such as the above-mentioned materials via a computer or the like.

JP 2004-206613 A

  By the way, the pen-type input device as described above can input characters, drawings, marks, etc. intuitively and is convenient, but it requires a dedicated pen and a dedicated board. When using a dedicated board, it is necessary to turn one dedicated pen in order or to prepare many dedicated pens.

  In addition, when writing new information such as text on materials displayed on a large display, it is not clear which position on the dedicated board corresponds to the position to be added, so once you have a rough position. After positioning the dedicated pen on the dedicated board and displaying the position on the large display as a trial, the input person sensibly corrects the deviation from the target position on the large display, and then repositions it. It takes time to input.

  In addition, the handwriting remains directly on a medium such as paper rather than a virtual display in which handwriting, characters, etc. are displayed on a display, etc., mainly for people who are unfamiliar with the operation of computers, electronic information devices, etc., and elderly people. The desire to leave notes is still persistent.

  The present invention has been made in view of such circumstances, and can be input using a normal writing instrument. Even when a large display is used, accurate input corresponding to the display of the large display can be performed. An object is to provide an information display system that can be performed.

In order to achieve the above object, an information display system of the present invention comprises a computer, a display for displaying information output from the computer, and a frame-shaped input means (A) below, The trajectory of the input body in the frame is input to the computer as new information, and the new information is displayed in addition to the information displayed on the display.
(A) It is composed of a rectangular frame and at least a pair of light emitting elements and light receiving elements attached thereto, and is generated in association with an input body located in the frame and reaches the light receiving elements from the light emitting elements. Optical input means for outputting position information in the frame of the input body by detecting blocking of light to be transmitted.

  The information display system of the present invention includes the frame-shaped optical input means (A) as a means for detecting the locus (touch position) of the input body. For this reason, a pen dedicated to input is not required, and a human finger or an elongated object such as a pen used for normal writing can be used as an input body used for inputting a memo or the like. Further, the input can be performed by moving the input body within the frame of the input means (A) arranged at a position distant from the large display, and also when writing with a writing instrument, Natural writing can be performed without requiring high writing pressure as in the electromagnetic induction method and without being conscious of the means for detecting the touch position. Further, the optical input means has the advantage that there is no electrical or physical contact in the frame (detection surface of the touch position), it is excellent in durability, and is not easily affected by dust or dirt. .

  Also, in the information display system of the present invention, a plurality of light emitting elements are arranged side by side in one part facing each other in the frame shape in the frame of the frame-shaped input means of (A), and the other part is arranged in the other part. A plurality of light receiving elements are arranged side by side, each light emitting element and the light receiving element are positioned toward the inside of the frame, and light emitted from the light emitting element toward the light receiving element intersects the frame vertically and horizontally. The light-emitting element (light source) that uses the light-emitting diode (LED) as the light-emitting element (light source) and the photodiode (PD) as the light-receiving element use general-purpose components. can do. Therefore, it is advantageous in that the optical input means of the information display system can be configured at low cost. In addition, it has the advantages of excellent impact resistance and durability.

  In the information display system of the present invention, among the four corners of the frame of the frame-like input means (A), the light receiving element composed of the light emitting element and the plurality of light receiving elements is provided at the corners on both sides of one side. Modules each having an element array stacked one above the other are arranged, and tape-like retroreflectors are arranged on the inner surfaces of the three sides excluding the one side between these modules. The light emitted from the light emitting element is reflected by the retroreflecting light reflector, and is recursively incident on the light receiving element array of this one module, with a smaller number of parts, by triangulation, The position of the tip of the input body can be specified. Furthermore, the optical input means of this information display system also has an advantage that it can be configured at low cost using general-purpose parts.

  In the information display system according to the present invention, a printed matter in which the same information as that displayed on the large-sized display is printed in the frame of the optical input means, or a second liquid crystal panel or the like that displays the information. If the display is installed, new information to be added to the display on the large display can be input using the display on the printed matter or the second display as a mark (reference). Information can be input at a precise position corresponding to the display on the large display.

  Further, in the information display system of the present invention, when the optical input means includes a storage means for storing the movement trajectory information of the input body as electronic data, the information is again obtained using a computer or the like. Can be pulled out (played back).

It is a figure explaining the structure of the information display system in 1st Embodiment of this invention. It is a figure explaining the structure of the information display system in 2nd Embodiment of this invention. (A) is a top view explaining the structure of one Example of the optical input means used with the information display system of this invention, (b) is a partial expanded sectional view of a part of (a). (A) is a top view explaining the structure of the other Example of the optical input means used with the information display system of this invention, (b) is the elements on larger scale of the Z section of (a).

  Next, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

  FIG. 1 is a diagram for explaining the entire system of the first embodiment having a basic minimum configuration in the information display system of the present invention. This information display system is a system for transmitting information to many people and sharing the information at the time of a presentation or a meeting. As shown in FIG. 1, a personal computer PC and this personal computer PC are used. A large display D1 for displaying the information output from the optical display means, and an optical input means S for inputting new information (such as a memo) to be displayed on the large display D1. The writing instrument P used for input and the like are provided with the basic configuration of the present invention. The optical input means S is composed of a square frame (rectangular) frame 1 and at least a pair of light emitting elements and light receiving elements attached to the frame 1 (both not shown). By detecting the blockage of light reaching the light receiving element from the light emitting element, which is generated in relation to the input body (writing tool P or the like) in the frame 1, position information of the writing tool P or the like in the frame 1 is output. In addition, the output information is displayed so as to be superimposed on the information displayed on the large display D1 via the personal computer PC. As described above, it is a feature of the information display system of the present invention that the optical input means S that detects input information by an optical technique is used as the input means of the information display system.

  The optical input means S comprises a rectangular frame 1 and a thick thick frame 2 formed integrally with the frame 1, and at least one set of light emission built in the frame 1. A touch position detecting means for detecting the tip position of the writing instrument P or the like is provided in a detection area (work area) within the frame 1 by the element and the light receiving element. In FIG. 1, a printed matter W on which information (material) to be displayed on the large display D1 is printed or an information screen similar to the large display D1 is displayed below the rectangular frame 1. A state in which the second display D2 is arranged is shown.

  The optical input means S includes storage means M for storing position information (movement trajectory) in the frame 1 such as the writing instrument P. Further, the optical input means S includes an input operation stop switch Q for manually stopping the input, an input prohibition switch R for invalidating the input when the optical input means S is lifted, an abnormality, a warning, etc. A lamp L for displaying the light, a battery for driving the light, a control means such as a driver for the light emitting element and the light receiving element, a communication means (wired or wireless) for communicating with an information device such as a computer, etc. Although it is built in the thick frame portion 2 and the like, the illustration thereof is omitted.

  The personal computer PC outputs information such as materials used for explanation in presentations and meetings to the large display D1, and information from the optical input means S (characters input by the optical input means S). Etc.) is output to the large display D1. Thereby, on the large display D1, information such as characters input by the optical input means S is displayed in a superimposed state on the information such as the material. In addition, transmission of information (signal) between the personal computer PC and each device may be performed by a connection cable or wirelessly. In this embodiment, signal transmission between the personal computer PC and the large display D1 is performed by the connection cable B, and signal transmission between the personal computer PC and the optical input means S is performed by the wireless communication F. To be done.

  In order for the personal computer PC to display new information such as characters, figures and marks input by the optical input means S on the screen position on the large display D1 corresponding to the input position. Software for converting the coordinates of the tip of the writing instrument P etc. in the work area (detection area) of the optical input means S into the coordinates on the screen of the large display D1, and instructing the display on the large display D1 (Program) is incorporated. Since the personal computer PC (notebook personal computer in FIG. 1) itself also has a sub display SD for operation, information similar to that of the large display D1 can be displayed on the sub display SD. .

  In addition, information such as conference materials to be displayed on the large display D1 is usually stored in advance in an information storage medium such as a memory, a hard disk, or an external USB memory in the personal computer PC, and from the information storage medium. Is output. The information such as the conference material displayed on the large display D1 and the information such as characters input from the optical input means S are overlapped or separated from each other. Stored in a storage medium or the like.

  As the large display D1, for example, a liquid crystal panel, an organic electroluminescence panel, a plasma panel, a projector, a cathode ray tube monitor, or the like is used.

  When the information display system (FIG. 1) of the first embodiment is used in a presentation or a meeting, first, as preparation, the same information as the meeting material displayed on the large display D1 is preliminarily written on paper or the like. A material portion printed on the size within the frame of the optical input means S (the printed material W) and placed on the optical input means S and displayed on the large display D1. The printed portion corresponding to is exposed from within the frame of the optical input means S (inside the frame 1). In addition, when changing the display of the large display D1 (turning pages) or moving the display position in the material, the printed matter W placed under the optical input means S is adjusted accordingly. Changing to a corresponding one or changing the position of the frame 1 is performed.

  Then, in this state, new information (such as a memo) is written on the portion of the printed material W exposed from the frame of the optical input means S using the writing tool P or the like, using the printing (characters, patterns, etc.) as a mark. As a result, new information to be added to the display on the large display D1 can be input at an appropriate position in a form corresponding to the current display on the large display D1. Furthermore, this input method can be used by recording the memo or the like directly on a paper medium (printed material W) and storing the printed material W on which the new information is written. it can.

  In the information display system of the first embodiment, the same information as the conference material displayed on the large display D1 can be displayed in accordance with the size of the frame of the optical input means S. A small second display (D2 mentioned above) is prepared, and the second display (D2) is installed under the optical input means S, so that the display part of this second display (D2) (ie Even when the same information screen as that of the large display D1 is exposed from the frame of the optical input means S, the display of the second display (D2) is used as a mark in the exposed portion of the frame. By writing new information (such as a memo) with a finger, writing tool P, etc., new information added to the display on the large display D1 can be applied to the current display on the large display D1. In form, it is possible to enter the exact position.

Next, an example in which the information display system of the present invention is configured on a larger scale will be described.
FIG. 2 shows an information display system according to the present invention in which a plurality of computers (PC1, PC2) and a tablet-type optical input means (S1, S2) in which an optical input means is combined with a small second display D2. , S3, S4) is an example configured using a plurality of units (second embodiment). In addition, the same code | symbol is attached | subjected to the structural member similar to 1st Embodiment of the said basic system structure, and the detailed description is abbreviate | omitted. In this configuration example, signal transmission between each of the computers PC1 and PC2 and the large display D1 is performed by wired connection (connection cables B and B ′), and each of the computers PC1 and PC2 and the optical input means S1. , S2, S3, S4 shows an example in which signal transmission is performed by wireless connection (wireless communication F), but the connection between these devices may be performed by wire or wirelessly.

  This information display system is a large-scale system that allows multiple participants in different locations, such as separate rooms and remote locations, to share the information entered by them during a meeting. A large display D1 installed at the main venue of the conference, etc., a host computer PC1 connected to the large display D1 and mainly controlling images displayed on the large display D1, input information, etc. A relay computer PC2 arranged at a location distant from the large display D1 and the host computer PC1, and a large number of tablet optical input means S1, S2 wirelessly connected to the host computer PC1 or the relay computer PC2 , S3, S4, and writing instrument P used for input of each optical input means S1, S2, S3, S4, etc. Obtain.

  The tablet-type optical input means S1, S2, S3, S4 are the same as the optical input means (S) in the system (first embodiment) of the basic configuration, A thick thick frame portion 2 formed integrally with the frame 1, and a detection area (work area) in the frame 1 by at least one set of light emitting elements and light receiving elements built in the frame 1. In addition, a touch position detecting means for detecting the tip position of the writing instrument P or a finger is provided. In this second embodiment, as the optical input means S1, S2, S3, S4, as shown in FIG. 2, the bottom of each square frame 1 of the optical input means S1, S2, S3, S4 is used. On the side (back side), a display (so-called “tablet” type) in which a second display D2 that displays the same information screen as that of the large display D1 is detachably attached is used.

  In the system configuration of the second embodiment, the number of input terminals (optical input means S1, S2, S3, S4) is large. The method of replacing the printed matter (W) placed under the optical input means (S) every time information is input, as described in the above, is limited in terms of distance and equipment and printing. This is because it is difficult due to the time lag. Therefore, in the second embodiment having the large-scale system configuration, information that can be updated in real time, such as the second display D2, is displayed on the information display of each optical input means S1, S2, S3, S4. Means are preferably employed. Of course, if it is possible to perform replacement quickly, a method of placing the printed material (W) under the optical input means (S1, S2, S3, S4) may be used.

  Specific examples of the second display D2 attached to each of the tablet-type optical input means S1, S2, S3, S4 include a flat panel display device such as an organic EL display, a liquid crystal display, and a plasma display. It is done. Each of the optical input means S1, S2, S3, S4 stores positional information (movement trajectory) in the frame 1 such as the writing instrument P and the finger as in the optical input means (S) in FIG. Storage means M is provided. Further, each optical input means S1, S2, S3, S4 includes an input operation stop switch Q for manually stopping the input, and an input prohibition switch for invalidating the input when the optical input means S is lifted. R, a lamp L for displaying an abnormality or warning, a battery for driving the lamp, a control means such as a driver for the light emitting element and the light receiving element, a communication means for communicating with an information device such as a computer (wired or wireless) ) And the like are built in the thick frame portion 2 and the like which are thick, but their illustration is omitted.

  As with the personal computer (PC) in the first embodiment (FIG. 1), the host computer PC1 stores information such as materials used for explanation in presentations and meetings, and a storage medium such as a USB memory in which the materials are stored. To the large display D1, and information (information such as input characters) from the tablet-type optical input means S1, S2 (S3, S4) is output to the large display D1. To do. Thereby, on the large display D1, information such as characters input by the optical input means S1, S2 (S3, S4) is displayed in a superimposed state on the information such as the material.

  The relay computer PC2 is installed in another room or a remote place away from the room (venue) where the large display D1, the host computer PC1 and the like are arranged, and the optical inputs arranged around the room. Information (information such as input characters) from the means S3 and S4 is relayed / transferred to the host computer PC1. As a result, information such as characters input by the optical input means S3 and S4 located away from the large display D1 and the host computer PC1 etc. is also superimposed on the information such as the above materials. It is displayed on the display D1.

  Then, the host computer PC1 and the relay computer PC2 are provided with new information such as characters, figures, marks, etc. inputted by the tablet-type optical input means S1, S2, S3, S4 connected thereto. In order to display at the screen position on the large-sized display D1 corresponding to the input position, the writing tools P and the above-mentioned writing tools P in the work area (detection area) of each of the optical input means S1, S2, S3, S4 Software (program) for converting the coordinates of the tip of a finger or the like into the coordinates on the screen of the corresponding large display D1 is incorporated.

  With this configuration, even in the second embodiment using the plurality of tablet-type optical input means S1, S2, S3, and S4, the optical input means S1, S2, S3, and S4 mounted on the optical input means S1, S2, S3, and S4 are used. Using the display on the 2 display D2 as a mark, writing new information (such as a memo) with a finger or writing instrument P or the like allows new information to be added to the display on the large display D1 to be displayed on the large display D1. It is possible to input at an appropriate position in a form that appropriately corresponds to the current display.

  It should be noted that new information such as characters, figures, marks, etc., input by the tablet-type optical input means S1, S2, S3, S4 is stored in the second display D2 mounted on the optical input means used for input and It is displayed on the large display D1 and the sub-display SD of each computer PC1, PC2 as well as on the second display D2 mounted on other optical input means not used for input. It has become so. Thereby, all the some participants who exist in remote places, such as another room and a remote place, can share information in real time. In this case, input information (handwriting or the like) is input for each optical input means S1, S2, S3, S4 so that the terminal (optical input means) or the input person who inputs the new information can be identified. You may make it display on each display with a different color. Further, the terminal (optical input means) to which the new information is input or the identification information (name or the like) of the input person may be programmed so as to be identified by a comment (pop-up or the like) such as a balloon on the display. .

  In addition, in order to prevent confusion such as simultaneous input by a plurality of participants (input persons) such as a conference, for example, the optical input means S1, S2, S3, S4 are connected to the host computer PC1, the relay computer PC2, etc. A function of allocating input priority (priority input order) may be given. As a result, each participant (input person) can smoothly write (speak).

  In the above two embodiments, the optical input means S or S1, S2, S3, S4 are turned on in order to prevent unintended erroneous input or empty input by an input person or the like. In such a state, a switch or the like that can invalidate only the input (detection by the touch position detection means) of each optical input means S or S1, S2, S3, S4, etc. You may arrange | position on the thick frame part 2 etc. which became thick (refer "input operation stop switch Q" of Fig.3 (a) mentioned later). In the optical input means S1, S2, S3, S4 (or S) provided with the second display D2, the second display D2 has an influence even in the input stop state in which the input operation stop switch Q is operated. The display is continued without receiving.

  Furthermore, each optical input means S or S1, S2, S3, S4 is input in a state where it is not properly placed on the second display D2 or a predetermined position on the printed matter W etc. on which the information is described. Alternatively, in order to prevent the operation, the optical input means S or S1, S2, S3, and the like are provided on the back side (the side in contact with the second display D2 or the printed material W) of the frame 1 or the thick frame 2 or the like. A switch or the like for detecting that S4 is floating may be provided (see “input prohibition switch R” in FIG. 3B described later).

  Next, as a specific configuration example of the optical input means (S or S1, S2, S3, S4) used in each of the above-described embodiments, the touch position of an object is detected by shielding orthogonal lattice-shaped light. Two types of optical input means, that is, the optical input means Sa of the system and the optical input means Sb of the system that calculates the light shielding position by the object by triangulation will be described.

  First, as a specific example of the optical input means used in the information display system, a large number of light emitting diodes (LEDs) are arranged as light emitting elements (light sources) in the frame 1 of the optical input means (S1). An optical system that forms a lattice of light for detecting the tip (T) of the writing instrument P within the frame of the optical input means S1 by arranging and arranging a large number of photodiodes (PD) as light receiving elements. The input means Sa will be described.

  FIG. 3A is a plan view for explaining the configuration of an embodiment (Sa) of the optical input means used in the information display system of the present invention, and FIG. It is a partial expanded sectional view. In this figure, for ease of explanation, the long side X1, X2 direction of the frame 1 is the horizontal direction (x direction), and the short side Y1, Y2 direction of the frame 1 is the vertical direction (y direction). At the same time, lattice-shaped light (invisible infrared light) inside the frame 1 is indicated by a two-dot chain line. Further, the number of LEDs and PDs and the number of grid lights are omitted, and the electrical wiring and the like in the frame 1 are indicated by dotted lines, and a battery, a computer, etc. for driving the optical input means S1 The communication means (cable or wireless antenna) for communicating with the information equipment is not shown (the same applies to FIG. 4 described later).

  As shown in FIG. 3A, the optical input means Sa of the information display system in this embodiment is configured such that the tip (touch position T) of the writing instrument P in a square area (work area) inside the frame-like frame 1 is used. ) And the movement position information (change in the xy position) of the tip position of the writing instrument P obtained by the touch position detection means. When the storage means MC (built-in) that also serves as the control means for the light emitting element and the light receiving element, the input operation stop switch Q that can manually stop the input by the writing instrument P, and the optical input means Sa are lifted Are provided with an input prohibition switch R that automatically disables input by the writing instrument P, and a plurality of lamps L that display an abnormality or warning of the device.

  The frame 1 portion of the optical input means Sa includes a number of LEDs 3, 3,... Arranged side by side in the frame 1 as a light emitting part of the touch position detecting means, as shown in FIG. In the frame 1 portion (side X2, Y2) facing the portion (side X1, Y1) of the frame 1 where each LED 3 is arranged, a large number of PD4 corresponding to each LED 3 is provided. The LED 3 and the PD 4 are aligned and positioned along the inner edge of the frame-like frame 1 so that the front ends thereof face inward. Then, by controlling the storage means MC that also serves as a controller (control means) for each LED 3 and PD 4, the LEDs 3 are caused to emit light at the same time or sequentially in the scanning direction, thereby forming a square detection area in the frame 1. A light grid (two-dot chain line) perpendicular to the vertical and horizontal directions is formed.

  In addition, as LED3 used as said light emitting element (light source), the infrared LED (infrared light emitting diode) of the type which light-emits the light of near infrared (wavelength: 700-2500 nm) is preferable. Further, as the light receiving element, in addition to the photodiode (PD), a linear sensor array in which a large number of light receiving elements are arranged in a line in a bar shape or an array shape, an image sensor, or the like may be used.

  Detection of the touch position T of the writing instrument P using the optical input means Sa of the above-described embodiment is performed in the following procedure. That is, first, as calibration, the intensity of light (grating light) reaching the PD 4 corresponding (opposite) to the LED 3 while sequentially emitting the LEDs 3 of the light emitting unit one by one (from the end), Measurement is performed at the time of light emission and at the time of no light emission, and a threshold value for detection / non-detection of an object by shading is determined for each PD 4 and stored as a table or the like in the storage means MC. Next, the optical input means Sa provided with the storage means MC also serving as the controller is lifted so that the print portion corresponding to the material portion displayed on the large display (D1) is exposed from within the frame. The input means Sa is placed on the printed material W.

  Next, the storage means MC also serving as the controller causes the LEDs 3 to emit light sequentially, and the detection area of the optical input means Sa is scanned, and exposed from the frame of the optical input means Sa. When the tip of the writing instrument P is lowered on the printed matter W, a part of the grid-like light passing through the frame is blocked by the tip of the writing instrument P as shown in FIG. When the portion is detected by the corresponding PD 4 of the touch position detecting means, the coordinate position [xy axis, see “touch position T” in FIG. 3A] in the frame of the writing tool P tip is obtained. The specified coordinates are transmitted to a computer (PC) or the like. In addition, when it is detected that there are a plurality (two or more points) of light blocking portions in the detection area, or when the light blocking portions are not accurately detected due to the influence of sunlight or electric light, etc. When the coordinates of the tip of P cannot be specified, scanning within the detection area is stopped, and a detection abnormality is notified (warned) by turning on the lamp L or the like.

  Next, when the writing tool P is moved and a memo or annotation is added, a locus of the tip of the writing tool P (writing information such as a memo) accompanying the movement is detected, and the coordinates of the locus are stored in the computer (PC ) And the information converted for the large display (D1) in the computer (PC) is displayed on the screen of the large display (D1) corresponding to the input position. It is displayed in a state superimposed on the information. Note that information such as a memo may be recorded in a memory or the like of the storage means MC that also serves as the controller at the same time that the memo is written with the writing instrument P.

  The above-described switch Q for stopping the input operation is disposed on the upper surface of a part of the frame 1 (the thick thick frame portion 2) [see FIG. 3 (a). ]. This input operation stop switch Q invalidates the detection of the tip of the writing instrument P by the touch position detecting means, and stops the light emission of the LED 3 or the light reception of the PD 4 by the ON-OFF operation. Alternatively, the information input by the writing instrument P or the like can be stopped at any timing of the input person by stopping the calculation in the storage means MC. As the input operation stop switch Q, an electromagnetic or optical switch such as a touch switch or a pressure sensitive switch can be used in addition to various mechanical switches such as push, button, tact, and slide. Further, when the input operation stop switch Q is activated, a warning display such as turning on the lamp L may be performed to clearly indicate that “input operation is being stopped”.

  Also, the input prohibition switch R described above is disposed on the back side of a part of the frame 1 (thick thick frame portion 2). As shown in the cross-sectional view of FIG. 3 (b), the input prohibition switch R is provided in the recessed portion 2a provided in the thick frame portion 2 of the frame 1 and opened toward the back side. When the frame 1 is lifted (floated), the tip of the input prohibition switch R is in the direction of the arrow in the direction of the arrow as shown by the phantom line (two-dot chain line) in the figure. Operates protruding from. Then, by the operation of the input prohibition switch R, the light emission of the LED 3 or the light reception of the PD 4 is stopped, the calculation in the storage means MC is stopped, or the entire optical input means is turned off. Etc. makes it impossible (automatically) to input information using the writing implement P or the like. As a result, the new information is optically displayed in an inappropriate state for input, such as when the optical input means Sa floats in the air or is not properly placed on a predetermined position on the printed matter W or the like. Input (saved) to the input means Sa can be prevented. Further, even when one optical input means Sa is sequentially used by a large number of people, there is no erroneous input when the optical input means Sa is transferred from person to person, and an input is immediately made at the place where the frame 1 is placed. Can be resumed, which is convenient. As the input prohibition switch R, an electromagnetic switch such as a pressure-sensitive switch, an optical switch that detects reflectance, brightness, or the like can be used in addition to a mechanical switch such as a push switch. As in the case of the input operation stop switch Q, the lamp L on the frame 1 or the like may be used to display a warning that “input is prohibited”. A warning by sound such as an alarm may be added.

  According to the optical input means Sa of the information display system in one embodiment as described above, a pen dedicated to input is unnecessary, and there is no inconvenience even if it is used by a large number of people. In addition, new information to be added to the display of the large display (D1) with the printed matter W exposed in the frame of the optical input means Sa and the display of the second display D2 as a mark is accurately positioned corresponding to the display. Can be entered. Furthermore, since erroneous input avoiding means such as an input operation stop switch Q and an input prohibition switch R are provided, even when one optical input means Sa is used by many people, there are few malfunctions. Moreover, the optical input means Sa of the above embodiment uses general-purpose components such as a light emitting diode (LED) as a light emitting element (light source) and a photodiode (PD) as a light receiving element. Therefore, the information display system can be configured at a low cost.

  Next, modules (C1, C2) each composed of a light-emitting element and a light-receiving element array are arranged at two corners of the frame 1 of the optical input means, and the writing instrument in the frame is used by using these two modules. Another embodiment of the optical input means Sb for specifying the position of the tip of P by triangulation will be described.

  FIG. 4A is a plan view for explaining the configuration of another embodiment (Sb) of the optical input means used in the information display system of the present invention, and FIG. 4B is a Z portion of FIG. FIG. Also in these drawings, the long side X1, X2 direction of the frame 1 is the horizontal direction (x direction), the short side Y1, Y2 direction of the frame 1 is the vertical direction (y direction), and the thick frame portion Illustration of a battery, communication means, and the like arranged in 2 is omitted.

  The optical input means Sb of the information display system in this other embodiment is also the position (xy coordinate) of the tip (touch position T) of the writing instrument P in the square area (work area) inside the frame-like frame 1. ) And the movement locus information (change in the xy position) of the tip position of the writing instrument P obtained by the touch position detection means, and the light emitting element and light receiving element control means Storage means MC (built-in) that also serves as an input, an input operation stop switch Q that can manually stop input by the writing instrument P, and input by the writing instrument P when the optical input means Sa is lifted. An input prohibition switch R that is automatically disabled and a plurality of lamps L that display an abnormality or warning of the device are provided.

  The optical input means Sb of the other embodiment is different from the optical input means Sa of the previous embodiment in that one of the four corners of the frame 1 of the optical input means Sb ( In this example, a light receiving / emitting module (camera) in which the light emitting elements (LED3) and the light receiving element array (image sensor 5) are vertically combined as shown in FIG. 4B at corners 1a, 1b on both sides of X2). Modules C1 and C2) are arranged, respectively, on the inner side surfaces of the three sides (X1, Y1, Y2) excluding the one side (X2) between the camera modules C1 and C2, as shown in FIG. In addition, a tape-like retroreflector (retroreflective tape 6) is attached. The storage means MC is also used as a controller (control means) for the LED 3 and the image sensor 5 as in the above embodiment.

  With this configuration, the optical input means Sb of the other embodiments described above allows the light emitted from the LEDs 3 of the camera modules C1 and C2 to be emitted from the camera modules C1 and C2 by the reflection of the retroreflective tape 6. As shown in FIG. 4 (a), a radial light crossing occurs in which the light spreads in a ripple pattern for each of the camera modules C1 and C2.

  The light emitting elements (light sources) of the camera modules C1 and C2 are preferably infrared LEDs (infrared light emitting diodes) that emit near-infrared (wavelength: 700 to 2500 nm) light. As the light receiving element, an image sensor such as a CCD or CMOS, a CMOS linear sensor array in which a large number of light receiving elements are arranged in a row, or the like can be used.

  Further, the retroreflector that is attached to the inner surface of the three sides (X1, Y1, Y2) of the frame 1 may be either a microprism type or a glass bead type. Further, in the above example, a tape-shaped molded body is used for easy handling, but instead, the inner side surface of the three sides (X1, Y1, Y2) has optical recursion. A paint or the like may be applied.

  The detection of the touch position T of the writing instrument P using the optical input means Sb of the other embodiments is performed in the following procedure. That is, first, as calibration, the intensity of the light (recursive light) recursed to each image sensor 5 of each camera module C1, C2 while emitting each LED3 of the camera modules C1, C2 is determined. Measured when no light is emitted, and determines a threshold value for detection / non-detection of an object due to light shielding for each of the camera modules C1 and C2, and stores it in the storage means MC as a table or the like. Next, the optical input means Sb provided with the storage means MC also serving as the controller is lifted so that the print portion corresponding to the material portion displayed on the large display (D1) is exposed from within the frame. The input unit Sb is placed on the printed material W.

  Next, when the tip of the writing instrument P is lowered to the portion of the printed matter W exposed from the frame of the optical input means Sb in a state where each LED 3 is caused to emit light by the memory means MC also serving as the controller. As shown in FIG. 4A, a part of the crossed light passing through the frame is blocked by the tip of the writing instrument P, and the blocked part is detected by the corresponding light receiving elements of the camera modules C1 and C2. The Further, using an arithmetic unit or the like (not shown), the blocking (light-shielding) position detected by the storage means MC also serving as the controller is obtained by triangulation, and the coordinate position [x -Y axis, see “touch position T” in FIG. 4A], and transmit the coordinates to a computer (PC) or the like. As in the case of the optical input means Sa for detecting coordinates with the grid-like light, when it is detected that there are a plurality (two or more) of light blocking portions in the detection area, or when sunlight or electric lamp light is used. When the coordinates of the tip of the writing instrument P cannot be specified, such as when the light blocking portion is not accurately detected due to the influence of the light, the scanning within the detection area is stopped, and the detection error due to the lighting of the lamp L, etc. Is notified (warning).

  When the writing instrument P is moved to write a memo, an annotation, or the like, the locus (writing information of the memo or the like) of the tip of the writing instrument P accompanying the movement is detected and calculated, and the locus coordinate is the computer. (PC) etc., and information converted for the large display (D1) in the computer (PC) is displayed on the screen of the large display (D1) corresponding to the input position. It is displayed in a state superimposed on information such as materials. Note that information such as a memo may be recorded in a memory or the like of the storage means MC that also serves as the controller at the same time that the memo is written with the writing instrument P.

  The optical input means Sb also includes an input operation stop switch Q and an input prohibition switch R similar to the optical input means Sa of the above embodiment. Further, when the input operation stop switch Q and the input prohibition switch R are activated, the lamp L is turned on or a warning sound is sounded to clearly indicate that “input operation is stopped” or “input prohibition”. The same is true in that a warning display such as issuing a warning is made.

  According to the optical input means Sb of the information display system in the other embodiments as described above, like the optical input means Sa of the one embodiment, no dedicated pen is required for the input operation, and it is used by a large number of people. However, no inconvenience arises. Also, new information to be added to the display of the large display (D1) with the printed matter W exposed in the frame of the optical input means Sb or the display of the second display D2 as a mark, and the correct position corresponding to the display Can be entered. Furthermore, since the input operation stop switch Q, the input prohibition switch R, and the like are provided, even when one optical input means Sb is used by many people, there are few erroneous inputs. In addition, the optical input means Sb of the other embodiments uses general-purpose parts such as a light emitting diode (LED) as a light emitting element (light source) and an image sensor such as a CCD or CMOS as a light receiving element. Since it can be used, the information display system can be configured at low cost in combination with the small number of optical components to be configured.

  The information display system of the present invention can be input using a normal writing instrument, and even when a large display is used, accurate input corresponding to the display of the large display can be performed.

1 frame S, Sa, Sb Optical input means S1, S2, S3, S4 Optical input means W Printed matter P Writing instrument D1, D2 Display PC, PC1, PC2 Computer

Claims (3)

A computer, a display for displaying information output from the computer, and a frame-shaped input unit (A) below, wherein the computer uses the locus of the input body within the frame of the input unit as new information. And displaying the new information in addition to the information displayed on the display.
(A) It is composed of a rectangular frame and at least a pair of light emitting elements and light receiving elements attached thereto, and is generated in association with an input body located in the frame and reaches the light receiving elements from the light emitting elements. Optical input means for outputting position information in the frame of the input body by detecting blocking of light to be transmitted.   In the frame-shaped input means frame (A), a plurality of light-emitting elements are arranged side by side in one portion facing each other in the frame shape, and a plurality of light-receiving elements are arranged in the other portion. The element and the light receiving element are positioned toward the inside of the frame, and light emitted from the light emitting element toward the light receiving element forms a lattice of light that intersects the frame in the vertical and horizontal directions. The information display system according to claim 1.   A module in which the light emitting element and a light receiving element array composed of a plurality of light receiving elements are vertically stacked on the corners on both sides of one side of the four corners of the frame of the frame-shaped input means of (A) above. A tape-like retroreflector is disposed on the inner surface of each of the three sides excluding the one side between the modules, and the light emitted from the light emitting element of one module is The information display system according to claim 1, wherein the information display system is reflected by a retroreflecting light reflector and recursively incident on the light receiving element array of the one module.

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