JP2004144875A - Presentation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a presentation system which is compatible to multiple functions while miniaturizing a remote controller or dispensing with it, and smoothly proceeds the presentation. <P>SOLUTION: A function key 80 is composed by fixing a key top 82 on which a function display 83 representing the function for the presentation and a bar code 84 related to the function for the presentation are displayed to an arbitrary holder 81 mounted on a function board 60. The bar code 84 emerges when an infrared light lamp 88 on the background is ignited by pushing the key top 82. The bar code 84 is picked up with an imaging part 40, a controlling part 31 discriminates the bar code 84 from the picked-up image, and carries out the function for the presentation related to the bar code 84. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a presentation system in which materials such as manuscripts and drawings are projected on display means such as a screen and a display, and an explanation is given to an audience while referring to the material images.
[0002]
[Prior art]
When a presentation is performed by projecting a material image onto a screen, an OHP is generally used as a material image projecting device, but in recent years, a liquid crystal projector has become widespread. In general, a liquid crystal projector is connected to an external device such as a personal computer and displays an image held by the external device. However, when giving a presentation using a liquid crystal projector connected to a personal computer, for example, it is necessary to operate a mouse or a keyboard in close proximity to the personal computer, which is cumbersome, and it may be difficult for the presentation to proceed smoothly.
[0003]
From the viewpoint that such a problem can be solved by adding a function of operating a personal computer to a remote controller, the present applicant has disclosed in Japanese Patent Application No. 2001-233152 and Japanese Patent Application No. 2002-184327 for presentation. A remote control that can select a laser pointer mode in which normal laser light is projected as a laser pointer, and a mouse mode in which infrared light is emitted and a mouse image for operating a personal computer is generated at a position where the infrared light is irradiated on the screen ( Laser pointer).
[0004]
[Problems to be solved by the invention]
Like the proposal above, if the remote control has various functions, the presentation can be enhanced, but on the other hand, the remote control will be equipped with parts and buttons according to many functions, so In addition, there is a possibility that the operation becomes complicated and the operation becomes complicated, which makes it difficult to handle. In addition, frequently used functions may differ depending on the contents of the presenter and the presentation. On the other hand, since the arrangement of buttons is fixed, there is a problem that it is difficult to operate the remote controller depending on the presenter. Furthermore, when the remote controller is operated, the line of sight is pointed at the remote controller, and in some cases, buttons to be operated may be searched for, which may hinder smooth presentation.
[0005]
Accordingly, it is an object of the present invention to provide a presentation system that can cope with multiple functions while making it possible to reduce the size of a remote control or eliminate the need for a remote control, and that can smoothly advance a presentation.
[0006]
[Means for Solving the Problems]
The present invention relates to a presentation system for displaying an image on a display means such as a screen, a unique information set as a medium associated with a presentation function and set as a medium for identifying the presentation function, and a function for holding the unique information. A board, an activating unit for validating the unique information, and a control unit for recognizing the unique information validated by the activating unit and executing a presentation function associated with the unique information. And
[0007]
Examples of the presentation function according to the present invention include controlling an image displayed on a display unit, setting the shape of a point image when pointing to the image, and the like. The control of the image includes page forward / backward of the screen, stop of the screen, and the like. When there are a plurality of output destinations of the image, selection of the output destination of the image is also included. When a sound is output during a presentation, control relating to the sound generation is also used as a presentation function.
[0008]
In the presentation, a plurality of presentation functions are appropriately used according to the situation. Conventionally, a remote controller or the like equipped with buttons for executing such functions has been used. In the present invention, a function board is used instead of such a remote controller. This function board holds unique information. The unique information is a medium for identifying the presentation function, and is set differently for each presentation function. One unique information is associated with one presentation function in a pair state and registered in the control unit. Is done.
[0009]
In the present invention, the unique information associated with the desired presentation function is selected from the unique information held in the function board, and the control unit recognizes the selected unique information, which is referred to as “validating the unique information”. A combination of the presentation function and the unique information is registered in the control unit in advance, and when one unique information is validated, the presentation function associated with the unique information is executed.
[0010]
Specific examples of the unique information of the present invention include image information such as numbers, symbols, and bar codes, and color information. When the unique information is such image information, the unique information can be made effective by capturing the unique information with an imaging unit that captures the function board. That is, by explicitly indicating the position of the unique information by emitting light or indicating the position by light, the control unit can directly read and recognize the unique information. Alternatively, a form in which the control unit recognizes the position of the unique information in advance and recognizes the unique information based on the specified position of the unique information may be adopted.
[0011]
The activating means of the present invention can also be realized by transmitting a position signal such as light or radio wave for causing the control unit to identify the position of the unique information. In this case, the position of the position signal and the unique information is recognized in advance by the control unit, and a position signal corresponding to the position where the unique information is held is transmitted to the control unit.
[0012]
According to the present invention, a presentation function can be executed by an operation such as activation of unique information held on a function board without depending on a remote control operation, and multi-function can be supported. If the function board is placed in or near the field of view of the presenter who looks at the display means such as a screen, the movement of the line of sight does not increase, so that the operation for executing the presentation function is less likely to stagnate, and the presentation is smooth. Can proceed. If some of the presentation functions are converted into unique information and held on the function board, the size of the remote controller can be reduced. If all of the functions are converted into unique information, the remote controller can be dispensed with.
[0013]
In the present invention, if the unique information is held by a holding member such as a plate and the holding member is detachably attached to an arbitrary position of the function board, the unique information can be arranged at a desired position of the presenter. Can be. Therefore, the unique information associated with the presentation function that is frequently used can be arranged at an easy-to-operate position, such as the center of the function board, thereby further smoothing. In the case where the above-described enabling means using a position signal such as light or radio wave is employed, the signal may be transmitted when the holding member is pressed.
[0014]
According to the present invention, by providing a virtual screen area on the function board and pointing the virtual screen area, it is possible to add a form in which a point image is combined with an image displayed on the display means.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(1) First embodiment
FIG. 1 schematically shows the entire presentation system according to the first embodiment of the present invention. In the figure, reference numeral P is a presenter, 10 is a screen (display means), 20 is a liquid crystal projector for projecting an image on the screen 10, 30 is a control board supported by a tripod, and 40 is an imaging unit installed on the control board 30 , 50 is a personal computer, 60 is a function board supported by a stand 61, and 70 is a pen.
[0016]
The imaging unit 40 includes a camera body 41 installed on the control board 30, a zoom lens 42, and an optical filter 43 detachably attached to the front of the zoom lens 42, and captures an image of the function board 60. It is set up to do. The optical filter 43 is an infrared light transmitting filter that transmits only infrared light, and is detachably attached to the imaging optical path of the zoom lens 42.
[0017]
In the control board 30, a control unit 31, an image combining unit 32, a switch 33, and a frame memory 34 shown in FIG. The image projected from the liquid crystal projector 20 onto the screen 10 is an image captured by the imaging unit 40, an image generated by the personal computer 50, an internal storage device in the control board 30, or a removable external storage medium loaded on the control board 30. Etc. is one of the stored images. Here, these types of images are referred to as an imaging unit image, an external image, and a storage device image, respectively. One of these images is selected by the switch 33, and the selected image is temporarily stored in the frame memory 34 and then input to the image synthesizing unit 32. The selection by the switching unit 33 is performed by, for example, an image switching switch (not shown) provided on the control board 30. The image input to the image synthesis unit 32 is input to the liquid crystal projector 20 via the external output unit 35, and is projected from the liquid crystal projector 20 on the screen 10.
[0018]
The function board 60 is attached to the stand 61 in a state of standing almost vertically. As shown in FIG. 2, an area 62 used as a virtual screen 11 for pointing is provided on the front of the function board 60, and a plurality of function keys 80 are arranged below the virtual screen area 62. I have. In this case, a total of eight function keys 80 are arranged in four upper and lower rows. At the four corners of the function board 60 including the virtual screen area 62 and the array of the function keys 80, infrared light emitting points 63 made of LEDs or the like are provided.
[0019]
In the present system, by using the virtual screen 11 and the pen 70, it is possible to instruct a point on the display screen of the screen 10 (pointing). As shown in FIG. 4, the pen 70 has, at the tip thereof, an instruction mark 71 composed of an LED or the like that emits infrared light. The instruction mark 71 emits light when a switch 72 is pressed to turn it on. The operation of the pointing function will be described below.
[0020]
First, the control unit 31 uses a general image analysis method to generate a virtual screen corresponding to the function board 60 (the virtual screen in this case is a rectangular screen including a virtual screen area 62 and an array of function keys 80). The XY coordinates (referring to a plane) are generated as follows. The infrared light emitting points 63 at the four corners are made to emit light, and these infrared light emitting points 63 are photographed by the imaging unit 40 in which the optical filter 43 is inserted in the imaging optical path. Then, the positions of the infrared light emitting points 63 at the four corners are recognized from the captured image data of the imaging unit 40, and then the XY coordinates of the virtual screen are generated from the positions of the infrared light emitting points 63 by image processing. As a result, a rectangular virtual screen having four corners of the infrared light emitting point 63 is generated on the front surface of the function board 60.
[0021]
After generating the virtual screen, screen coordinates are generated. The screen coordinates are calculated from the positions of the virtual screen in the X and Y directions in each direction so as to correspond to the ratio of the number of pixels in the X and Y directions of the image displayed on the screen 10. . The screen coordinates are held by the control unit 31.
[0022]
When performing pointing, the instruction mark 71 is made to emit light with the tip of the pen 70 touching the virtual screen area 62 of the function board 60. The instruction mark 71 is photographed by the imaging unit 40 in which the optical filter 43 is inserted into the imaging optical path, and the control unit 31 uses the captured image data to generate a virtual screen 11 (this virtual screen 11 is displayed in the virtual screen area 62). The position coordinates of the instruction mark 71 on the coordinates (corresponding portions) are calculated one by one. Then, the control unit 31 generates a point image such as an arrow at the calculated position coordinates of the instruction mark 71. The point image generated by the control unit 31 is input to the image combining unit 32, and the image combining unit 32 combines the point image with the image input from the frame memory 34. Then, the synthesized image is input to the liquid crystal projector 20 via the external output unit 35, and is projected from the liquid crystal projector 20 to the screen 10.
[0023]
FIG. 5 shows an image of a process from generation of a virtual screen to pointing. In the figure, reference numeral 44 denotes a shooting range, that is, an angle of view of the imaging unit 40. Within the angle of view 44, a virtual screen area 62 is defined as a plane having an X axis (horizontal axis) and a Y axis (vertical axis). And a virtual screen 11A including the array of the function keys 80. The image of the instruction mark 71 is read by the imaging unit 40 as instruction mark data 71a on the image data. 11B is the screen coordinates described above. Reference numeral 90 denotes a point image generated on the screen coordinates 11B, in this case, an arrow. On the other hand, reference numeral 91 in FIG. 5 denotes an image displayed on the screen 10, and the display image 91 and the point image 90 are input to the image combining unit 32. Then, the image combining unit 32 combines the display image 91 and the point image 90, and the combined image 92 is projected from the liquid crystal projector 20 onto the screen 10. In this case, since the tip of the pen 70 is applied to the virtual screen area 62 of the function board 60, there is an advantage that the camera shake is less likely to occur in the point image 90.
[0024]
As shown in FIG. 3, various commands related to the personal computer 50 are generated in the control unit 31 as presentation functions, and the commands are input to the personal computer 50 via the external output unit 35. When a command is input, the personal computer 50 executes the command. The control unit 31 has audio data, and the audio data is generated from the speaker 36 via the external output unit 35. The speaker 36 is built in the control board 30, for example, or an external speaker is used.
[0025]
In the present embodiment, the following presentation functions can be executed using the function board 60.
(1) Send the external image to the next page.
(2) Return the external image to the previous page.
(3) Erase the external image.
(4) Leave the external image.
▲ 5 ▼ Change the point image to ○
(6) Make the point image a short underline.
(7) Make the point image a long underline.
(8) Turn the point image into an arrow.
[0026]
The function keys 80 arranged on the function board 60 include, as shown in FIG. 6, a holder 81 and a key top (holding member) 82 which is detachably attached to the holder 81. The key top 82 is a horizontally long thin rectangular plate made of a transparent or translucent resin or the like, and the surface thereof has the above functions (1) to (8) as shown in FIG. Characters, pictures, etc. (here, function display 83) are printed, respectively, and on the back side, as a unique information associated with the function display 83 printed on the front side, a bar code 84 as shown in FIG. Is printed. FIG. 7 shows an example of the key top 82 relating to the function (1), in which “Send” is displayed as a function display 83 on the front side, and a bar code associated with the function “Send” is displayed on the back side. 84 is printed. Here, the function display 83 on the front surface is printed with a dye or pigment that transmits infrared light, and the barcode 84 on the back surface is printed with a dye or pigment that does not transmit infrared light. Each bar code 84 printed on the back surface of each key top 82 has a different pattern, and one bar code 84 is associated with one presentation function (function displayed on the function display 83) in a pair state. Registered in the control unit.
[0027]
As shown in FIG. 6, a holder 81 to which a key top 82 is detachably attached is movably fitted in a guide 85 fixed to the front surface of the function board 60 in the front-rear direction. It is constantly urged forward (to the left in FIG. 6) by a compression spring 86 interposed therebetween. Behind the holder 81, a key switch 87 for transmitting a function signal to be described later and an infrared lamp 88 are arranged. The infrared lamp 88 can be individually turned on for each function key 80 by a lighting switch (not shown).
[0028]
When the infrared lamp 88 is turned on, the bar code 84 printed on the back surface of the key top 82 appears as a silhouette. When the imaging unit 40 in which the optical filter 43 is inserted in the imaging optical path captures this state, only the barcode 84 is captured. This is because the barcode 84 is printed with a dye or a pigment that does not transmit infrared light, and characters and pictures on the surface are printed with a dye or a pigment that transmits infrared light. From the viewpoint that the barcode 84 can be clearly photographed over the entire area, a light diffusion plate 82a may be attached to the back surface of the keytop 82 as shown in FIG. In addition, uniform illumination light can be obtained by arranging a plurality of infrared light lamps 88 or using a surface light emitting element.
[0029]
In the control unit 31, for each bar code 84 of a different pattern printed on the back surface of each key top 82, the presentation functions (1) to (8) indicated by the function display 83 printed on the front surface are previously set. When the control unit 31 identifies the barcode 84, the control unit 31 executes the presentation function associated with the barcode 84.
[0030]
The control board 30 is provided with a preparation button. When the preparation button is pressed, a preparation signal such as light is transmitted from a transmission unit of the control board 30 (both are not shown). The transmitted preparation signal is received by the receiving unit 64 provided in the stand 61 shown in FIG. When the receiving unit 64 receives the preparation signal, the function board 60 enters a preparation state. Further, a transmission unit 65 for transmitting a function signal by light is provided adjacent to the reception unit 64. When the key top 82 is pressed against the compression spring 86, the key switch 87 is pressed by the holder 81 and the key switch 87 is turned on, whereby a function signal is transmitted from the transmission unit 65. The function signal is transmitted even when the key switch 87 of any one of the function keys 80 is turned on, and the function signal is received by the receiving unit of the control board 30. When the receiving unit of the control board 30 receives the function signal, the control unit 31 identifies the captured image of the imaging unit 40, that is, the barcode 84, and executes the function for presentation.
[0031]
Next, the operation of the control unit for executing the presentation function will be described.
A. Generate virtual screen from preparation, pre-recognize function keys
In the present system, as a first stage, a process of steps S101 to S105 shown in FIG. 8 is performed. In the process, first, a function to be used is selected from the presentation functions (functions (1) to (8) above) displayed on each keytop 82, and the keytop 82 on which the function is displayed on the surface is selected. select. Then, the selected key top 82 is fitted and set in each holder 81 of the function board 60 (step S101). FIG. 2 shows a state where all the key tops 82 are set.
[0032]
Next, the entire function board 60 is photographed by the imaging unit 40 (step S102). In order to photograph the entire function board 60, the posture of the camera body 41 is adjusted to face the function board 60, and the magnification of the zoom lens 42 is further adjusted. Next, a preparation signal is transmitted by pressing a preparation button of the control board 30, and the function board 60 is prepared (step S103). Subsequently, the control unit 31 generates the virtual screen 11A on the front surface of the function board 60 (step S104), and then causes the control unit 31 to recognize the position of the eight barcodes 84 on the virtual screen 11. Function pre-recognition of the function key 80 is performed (step S105). The generation of the virtual screen 11A and the function pre-recognition of the function keys 80 are performed by the following operations. Note that the order may be reversed.
[0033]
a. Generate virtual screen
Although the generation of the virtual screen 11A has been described above, it will be briefly described here with reference to FIG. First, the optical filter 43 is inserted into the imaging optical path so that the imaging unit 40 can capture only infrared light (step S201), and then the infrared light emitting points 63 at the four corners of the function board 60 emit light (step S201). Step S202). The infrared light emitting points 63 at the four corners are photographed by the imaging unit 40, the positions of the infrared light emitting points 63 at the four corners are recognized from the captured image data, and then virtual processing is performed based on the positions of the infrared light emitting points 63 by image processing. The XY coordinates of the screen 11A are generated (Step S203). Thereafter, the infrared light emitting point 63 is extinguished (step S204).
[0034]
b. Function key function pre-recognition
As shown in FIG. 9B, first, the optical filter 43 is inserted into the imaging optical path so that the imaging unit 40 can capture only infrared light (step S301), and corresponds to one function key 80. The infrared lamp 88 is turned on by a lighting switch (not shown) (step S302). Next, the imaging unit 40 captures an image of the barcode 84 displayed as a silhouette on the keytop 82 by turning on the infrared light lamp 88 (step S303). The control unit 31 recognizes the position of the barcode 84 on the virtual screen 11A (step S304), whereby the position of one barcode 84 on the virtual screen 11A and the presentation for the barcode 84 at that position are associated. The control unit 31 recognizes the function in advance. Subsequently, steps S302 to S304 are performed for each function key 80, and the control unit 31 recognizes the position of the remaining barcode 84 and the presentation function.
[0035]
B. Enable barcodes during presentations
The above is the preparation work before giving a presentation. Next, an operation for validating the barcode 84 when actually giving a presentation will be described with reference to FIG. As shown in FIG. 10B, first, the optical filter 43 is inserted into the imaging optical path so that the imaging unit 40 can capture only infrared light (step S401), and the instruction mark 71 of the pen 70 emits light. Then, the user presses the key top 82 on which the desired presentation function is displayed with the tip of the pen 70 (step S403). Then, the key switch 87 is turned ON, and the function signal is transmitted from the transmission unit 65 (step S404). The function signal is received by the receiving unit of the control board 30, and the control unit 31 identifies the type of the barcode 84 from the position of the instruction mark 71 photographed by the imaging unit 40 (step S405), and associates the type with the barcode 84. The designated presentation function is executed (step S406).
[0036]
In this case, the presentation functions executed by the function board 60 are the above-mentioned (1) to (8), but (1) to (4) relate to an external image, and the image projected from the liquid crystal projector 20 is Used when an external image is used. For example, when the user wants to perform the function (1), that is, to feed a page of an external image, the user presses the “Send” key top 82 with the tip of the pen 70 that has caused the instruction mark 71 to emit light. Then, the control unit 31 recognizes from the position of the instruction mark 71 that the function for presentation is “page feed of external image”, and sends the command to the personal computer 50. In the personal computer 50, the page is sent to the next image, and the image is projected from the liquid crystal projector 20. With respect to the presentation functions (2) to (4), a command is sent from the control unit 31 to the personal computer 50 by pressing the key top 82 corresponding to these functions at the portion of the instruction mark 71 that emits light. The presentation function is executed.
[0037]
The points (5) to (8) relate to the setting of a point image when pointing is performed by the instruction mark 71 of the pen 70. For example, when the function of (7), that is, the point image is desired to be a long underline, the "long underline" key top 82 is pressed with the tip of the pen 70 which caused the indicator mark 71 to emit light (FIG. 10A shows this state). ing). Then, the control unit 31 recognizes from the position of the instruction mark 71 that the function for presentation is "to make a point image a long underline", and generates a point image with a long underline. The point image is combined with the image input to the image combining unit 32 by the image combining unit 32, and a combined image to which the point image is added is projected from the liquid crystal projector 20.
[0038]
In the above embodiment, the controller 31 identifies the bar code 84 by pressing the key top 82 of the function key 80 provided on the function board 60 with the indication mark 71 of the pen 70, and associates the bar code 84 with the bar code 84. The presentation function. By arranging the function board 60 in or near the range of the field of view of the presenter P who views the screen 10, the movement of the line of sight does not increase, so that it is compared with a conventional case where the function for presentation is executed by the remote controller. Stagnation is unlikely to occur, and the presentation can proceed smoothly. When a remote controller for executing the function for presentation is attached, if a part of the function for presentation is set to be executable by the function keys 80 of the function board 60 as described above, the size of the remote controller can be reduced. If it is set to be executable, no remote control is required.
[0039]
The key top 82 of the function key 80 is removably attached to the holder 81, which means that the bar code 84 can be arranged at an arbitrary position. Therefore, the keytop 82 on which the barcode 84 associated with the frequently used presentation function is printed can be arranged at an easy-to-operate position, thereby further smoothing the presentation.
[0040]
FIG. 11A shows an example of changing function keys that can be used in the above embodiment. As shown in FIG. 11B, the key top 82 attached to the function key 80 has both a function display 83 indicating a presentation function and a bar code 84 on its surface as a dye or pigment through which infrared light is not transmitted. Etc., nothing is printed on the back surface, and the light diffusion plate is not attached. In the case of using the function key 80 using the key top 82, there is no need to provide the infrared light lamp 88 as shown in FIG.
[0041]
The function pre-recognition for the function key 80 having the key top 82 shown in FIG. 11 is performed by the process shown in FIG. That is, the optical filter 43 is removed from the imaging optical path (step S501), the bar code 84 displayed on the keytop 82 is photographed by the imaging unit 40 (step S502), and the position of the bar code 84 on the virtual screen 11A is recognized. (Step S503). Thereby, the position of the barcode 84 on the virtual screen 11A is recognized in advance. Even if this keytop 82 is used, the barcode 84 can be validated in the same manner as in the above embodiment.
[0042]
In this modified example, the control unit 31 recognizes the function for presentation by directly reading the bar code 84 printed on the surface of the key top 82, and it is not necessary to provide the function key 80 with the infrared light lamp 88. Accordingly, the function display 83 and the barcode 84 representing the presentation function to be printed on the front surface of the key top 82 can be printed with a visible dye or pigment, and the light diffusion on the back surface of the key top 82 can be performed. There is no need to stick a board. Therefore, it can be configured at low cost, which is advantageous in cost.
[0043]
Next, another embodiment of the present invention in which the means for validating the barcode 84 is changed will be described.
[0044]
(2) Second embodiment: transmitting a function signal from a pen
FIG. 13A shows a valid state of the barcode 84 according to the second embodiment, and FIG. 13B shows the operation thereof. In the second embodiment, a pen 70 is provided with a function key 73 as shown in FIG. 13A, and when the function key 73 is pressed, the pen 70 transmits the instruction mark 71 to the pen 70 by the transmission mark 65. The same type of light as the signal is emitted and the function signal is transmitted.
[0045]
To activate the barcode 84 in the second embodiment, as shown in FIG. 13B, first, the optical filter 43 is inserted into the imaging optical path (step S601). Next, as shown in FIG. 13A, the instruction mark 71 of the pen 70 is overlaid on the keytop 82 on which the desired presentation function is displayed (step S602), and the function key 73 of the pen 70 is pressed to indicate the instruction mark. The light emitting device 71 emits light (step S603). Then, a function signal is transmitted from the instruction mark 71 (step S604). The function signal is received by the receiving unit of the control board 30, and the control unit 31 identifies the type of the barcode 84 from the position of the instruction mark 71 captured by the imaging unit 40 (step S605), and associates the type with the barcode 84. The designated presentation function is executed (step S606).
[0046]
(3) Third embodiment: transmitting a position signal unique to a function key
FIG. 14A shows a valid state of the barcode 84 according to the third embodiment, and FIG. 14B shows the operation thereof. In the third embodiment, when the key switch 87 is turned on by pressing the key top 82 of the function key 80 on the function board 60, the transmission unit 65 transmits a unique position signal for each function key 80. That is, since eight function keys 80 are provided in this case, eight types of position signals are set, and these position signals are signals indicating the positions of the function keys 80. The control unit 31 of the control board 30 identifies which function key 80 these position signals correspond to. As the function pre-recognition of the function key 80, the bar code 84 photographed by the imaging unit 40 as described above and the position signal are associated.
[0047]
To activate the barcode 84, as shown in FIG. 14B, the keytop 82 on which the desired presentation function is displayed is pressed with a finger or the tip of the pen 70 (step S701). FIG. 14A shows a state in which the key top 82 is being pressed with a finger. When the keytop 82 is pressed, a position signal corresponding to the function key 80 is transmitted from the transmission unit 65 (step S702). The position signal is received by the receiving unit of the control board 30, and the control unit 31 identifies the function key 80 of which position is based on the type of the position signal (step S703), and based on this, the bar code 84 recognized in advance. Is identified (step S704), and the function for presentation associated with the barcode 84 is executed (step S705).
[0048]
In the second and third embodiments, the same operation can be obtained by using the function keys 80 and the key tops 82 shown in FIGS. 11A and 11B.
[0049]
According to the third embodiment, after performing the function pre-recognition of the function keys 80, the barcode 84 can be activated without the imaging unit 40 photographing the function board 60. Therefore, there is an advantage that a virtual screen for pointing can be generated in any space other than the function board 60.
[0050]
(4) Fourth Embodiment: Bar Code is Directly Read
FIG. 15A shows a state of activation of the barcode 84 according to the fourth embodiment, and FIG. 15B shows the operation thereof. FIGS. 16A and 16B show a function key 80 and a key top 82 of the fourth embodiment, respectively. In this case, as shown in FIG. 16B, the key top 82 has a function display 83 representing a presentation function printed on the center of the front surface, and the same display associated with the presentation function is displayed on the left and right sides of the function display 83. The bar code 84 of the pattern is printed. The function display 83 is printed with a dye or a pigment that transmits infrared light, and the barcode 84 is printed with a dye or a pigment that does not transmit infrared light. An elliptical recess 82b is formed in a portion where the function display 83 is printed so that the key top 82 can be pressed easily and the portion to be pressed can be restricted. The same pattern is formed on the left and right of the recess 82b. Is displayed.
[0051]
The function key 80 has the same configuration as that of the first embodiment as shown in FIG. 16A, but the key switch 87B in this case is a lighting switch of the infrared light lamp 88. That is, when the key switch 82 is turned on by pressing the key top 82, the infrared lamp 88 is turned on. When the key top 82 is released, the key switch 87B is turned off and the infrared lamp 88 is turned off.
[0052]
To activate the barcode 84, as shown in FIG. 15B, first, the optical filter 43 is inserted into the imaging optical path (step S801), and then the keytop on which the desired presentation function is displayed. Press 82 (step S802). Then, the key switch 87B is turned ON, the infrared lamp 88 is turned on, and the bar code 84 emerges as a silhouette (step S803). In the imaging unit 40, since the optical filter 43 is inserted in the imaging optical path, only the barcode 84 displayed on the pressed keytop 82 is photographed by the imaging unit 40. The control unit 31 identifies the type of the barcode 84 from the image data captured by the imaging unit 40 (step S804), and causes the presentation function associated with the barcode 84 to be executed (step S805).
[0053]
When pressing the keytop 82, the central recess 82b is pressed. Since the same barcode 84 is displayed on the left and right of the recess 82b, even if one barcode 84 is hidden by a finger, the other barcode 84 can be photographed. Since the finger pressing the key top 82 is unlikely to be caught by the recess 82b, the bar code 84 can be reliably photographed. Further, in order to reliably photograph the barcode 84, the infrared light lamp 88 may be turned on for a certain period of time even when the key top 82 is released and the key switch 87B is turned off.
[0054]
FIG. 17 shows a modified example of a key top 82 that can be used for the function key 80 of the fourth embodiment. As shown in FIG. 17A, the key top 82 has a function display 83 representing a presentation function printed on a concave portion 82b on the front surface thereof, and a bar code having the same pattern as shown in FIG. 84 are printed in a state where they are arranged on both sides of the recess 83b on the front surface. Also in this case, the function display 83 on the front surface is printed with a dye or a pigment that transmits infrared light, and the bar code 84 on the back surface is printed with a dye or a pigment that does not transmit infrared light. Even if this keytop 82 is used, the barcode 84 can be validated in the same manner as described above.
[0055]
According to the fourth embodiment, the bar code 84 printed on the pressed key top 82 is photographed by the imaging unit 40, and the control unit 31 directly identifies the bar code 84 from the photographed image data to provide a presentation function. Is performed, the function pre-recognition becomes unnecessary, and the transmission of a function signal or the like becomes unnecessary. As a result, the configuration is simplified and the cost is advantageous.
[0056]
In the above embodiment, the function for presentation that can be executed by the function board 60 is eight, and the number of key tops 82 is eight in accordance with this. However, the number and contents of the function for presentation are not limited thereto. It can be set arbitrarily. For example, the switching unit 33 for switching an image displayed on the screen 10 is performed by an image switching switch (not shown) provided on the control board 30, but the image is switched by a function key 80 provided on the function board 60. It can be configured as follows. Therefore, it is possible to execute a function for presentation such as page turning, as in the case of the external image, with respect to the storage device image and the imaging unit image.
[0057]
【The invention's effect】
As described above, according to the present invention, by enabling the unique information held in the function board, the presentation function associated with the unique information is executed. This makes it possible to reduce the size of the remote controller or to eliminate the need for the remote controller, and it is possible to cope with multiple functions and to smoothly perform a presentation.
[Brief description of the drawings]
FIG. 1 is an overall schematic diagram of a presentation system according to a first embodiment of the present invention.
FIG. 2 is a front view of a function board.
FIG. 3 is a functional block diagram of the system.
FIG. 4 is a side view of the pen.
FIG. 5 is a diagram showing an image of a process from setting of a virtual screen to pointing.
FIG. 6 is a side sectional view of a function key.
7A is a front view and FIG. 7B is a rear view of the key top.
FIG. 8 is a flowchart showing an operation in a preparation stage of the system.
9A is a flowchart illustrating an operation of generating a virtual screen, and FIG. 9B is a flowchart illustrating an operation of function key pre-recognition.
FIGS. 10A and 10B are diagrams illustrating an operation of activating a function key according to the first embodiment, wherein FIG. 10A is a function board and FIG. 10B is a flowchart.
FIGS. 11A and 11B are diagrams illustrating a modification example of the function keys according to the first embodiment, wherein FIG. 11A is a cross-sectional view of the function keys, and FIG.
FIG. 12 is a flowchart showing an operation of function pre-recognition of function keys in FIG. 11;
13A and 13B are diagrams illustrating an operation of activating a function key according to the second embodiment, wherein FIG. 13A is a function board and FIG. 13B is a flowchart.
14A and 14B are diagrams illustrating an operation of activating a function key according to the third embodiment, wherein FIG. 14A is a function board, and FIG. 14B is a flowchart.
FIGS. 15A and 15B are diagrams illustrating an operation of activating a function key according to the fourth embodiment, where FIG. 15A is a function board and FIG. 15B is a flowchart.
FIG. 16A is a side sectional view of a function key, and FIG. 16B is a front view of a key top according to the fourth embodiment.
FIGS. 17A and 17B are diagrams showing a modification of the key top according to the fourth embodiment, wherein FIG. 17A is a front view of the key top, and FIG.
[Explanation of symbols]
10. Screen (display means)
40 ... Imaging unit
60 ... Function board
62: virtual screen area
80… Function key
82 key top (holding member)
84 barcode (specific information)

Claims (8)

In a presentation system that displays images on display means such as a screen,
Unique information associated with the presentation function and set as a medium for identifying the presentation function;
A function board that holds this unique information,
Activating means for validating the unique information;
And a control unit for recognizing the unique information validated by the validation means and executing a presentation function associated with the unique information. An image capturing unit that captures the function board and a captured image is input to the control unit,
The unique information is numeral, symbol, image information such as a barcode,
2. The method according to claim 1, wherein the validating unit specifies a position of the unique information, and the control unit recognizes the position of the unique information or the unique information itself from a captured image of the imaging unit based on the specified position. The presentation system described. An image capturing unit that captures the function board and a captured image is input to the control unit,
The unique information is color information,
2. The method according to claim 1, wherein the validating unit specifies a position of the unique information, and the control unit recognizes the position of the unique information or the unique information itself from a captured image of the imaging unit based on the specified position. The presentation system described. The presentation system according to any one of claims 1 to 3, wherein the unique information is held by a holding member, and the holding member is detachably attached to an arbitrary position of the function board. 5. The presentation system according to claim 1, wherein the validating unit transmits a position signal such as light or radio wave for identifying the position of the unique information to the control unit. 6. 6. A virtual screen area is provided on the function board, and a point image is combined with an image displayed on the display means by pointing the virtual screen area. Presentation system according to any of the above. The presentation system according to claim 6, wherein the presentation function is a setting of the shape of the point image. The presentation function is at least one of selection of an output destination of an image displayed on the display unit, page forward / backward of a screen, stillness of a screen, and sound generation. 7. The presentation system according to any one of 7.

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