JP2004040521A - Document camera device and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a document camera device for displaying an image at proper timing by eliminating the complexity of an operation due to device switching or the like. <P>SOLUTION: The document camera device is provided with a camera part and an image display device for displaying a data image supplied from the outside. A display screen of the image display device is disposed oppositely from the camera part, and image data obtained by photographing both the data image on the display screen and a photographing object placed between the camera part and the data image are displayed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a document camera apparatus for displaying image data captured by a camera unit at a remote place, and a program therefor.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. H11-151207 discloses a conventional document camera apparatus of this type.
This is because a touch panel is built into the screen of the monitor display that displays images etc. to be transmitted to the patient, multiple icons are displayed on the screen to facilitate input operation, and a document camera facing the flat head type backlight is used. An image of a printed matter or a developed X-ray film placed on a flat-head type backlight, an image of a doctor's face taken by an interactive camera separately provided in front of a monitor display, and a CT scan recorded in a database. Is transmitted to a remote patient for display.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional technology, when using data such as a CT scan in a data file and a printed matter printed on paper or an image of a developed film in combination, the operation becomes complicated due to switching of the apparatus. Therefore, there is a problem that it is difficult to display an image at an appropriate timing.
[0004]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a document camera device capable of eliminating the complexity of operation due to device switching or the like and displaying an image at an appropriate timing. .
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a document camera apparatus, comprising: a camera unit and a screen display device that displays a material screen supplied from the outside; and a display screen of the screen display device and the camera unit. The camera unit is arranged so as to be opposed to the camera unit, and the camera unit displays image data obtained by photographing both a material screen of the display screen and an object to be photographed interposed between the camera unit and the material screen.
[0006]
Further, a control unit of a material screen supply device that supplies a material screen to the screen display device that executes a program of a document camera device including a camera unit and a screen display device that displays a material screen, includes a material screen on the screen display device. The control unit of the material screen supply device for supplying the material screen receives the handwritten data obtained by the material screen output means for supplying the material screen to the screen display device and the screen position detecting means provided on the display screen of the screen display device. Handwriting data receiving means, handwriting screen display means for displaying the material screen and the trajectory of the handwriting data in an overlapping manner, operation button display means for displaying operation buttons on the display screen of the screen display device, Detection signal receiving means for receiving a detection signal of the operation button by the screen position detection means; and selecting, by the detection signal, a branch to the selected process. Characterized in that function as processing branch unit.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a document camera apparatus according to the present invention will be described with reference to the drawings.
Example of the first embodiment
FIG. 1 is a perspective view showing the first embodiment, and FIG. 2 is a block diagram showing the computer.
[0008]
Reference numeral 1 denotes a computer such as a personal computer as a material screen supply device, which executes a "material screen supply program" which creates and supplies material screens such as data files.
A screen display device 2 is connected to the computer 1 and has a display screen 3 such as an LCD capable of displaying a clear image, and displays a material screen or the like supplied from the computer 1.
[0009]
The screen display device 2 is formed in a substantially flat plate shape, and is configured so that the display screen 3 is substantially horizontal when placed on a desk or the like.
Reference numeral 4 denotes a mouse, which is connected to the computer 1 and used by a presenter such as a telemedicine doctor, a lecturer lecturer, or a lab classroom teacher to perform operations such as switching of an explanation material screen.
[0010]
Reference numeral 5 denotes a camera unit, which is disposed at a position facing the display screen 3 of the screen display device 2 and has a function of converting a captured image from a video camera using a CCD (Charge Coupled Device) into image data. Yes, it has an autofocus function and is set to have a relatively deep depth of focus.
Reference numeral 6 denotes a support, which supports the camera unit 5 so that all of the material screens displayed on the display screen 3 of the screen display device 2 fall within the field of view of the camera unit 5.
[0011]
Note that the support 6 may be fixed to a frame or the like of the screen display device 2 or may be fixed to a separately provided pedestal and installed adjacent to the screen display device 2.
Reference numeral 7 denotes a projector, which is connected to the camera unit 5 and is installed at a location distant from the camera unit 5, and projects image data captured by the camera unit 5 on a screen 8 for display.
[0012]
In FIG. 2, reference numeral 11 denotes a control unit of the computer 1, which controls each unit of the computer 1.
Reference numeral 12 denotes a storage unit that stores a material screen supply program executed by the control unit 11, a processing result by the control unit 11, and the like.
A display unit 13 is connected to the screen display device 2 and has a function of converting a material screen or the like sent from the control unit 11 into screen display data that can be displayed on the display screen 3 of the screen display device 2. I have.
[0013]
An input unit 14 is connected to the mouse 4 and has a function of receiving an output of the mouse 4 and converting the output into input data that can be used by the control unit 11.
Reference numeral 15 denotes a recording medium reading / writing unit which reads the explanatory material data and the like in a data file recorded on a recording medium such as an inserted floppy disk, and writes the processing result by the control unit 11 on the recording medium. Has a function.
[0014]
The operation of the above configuration will be described.
The presenter records and prepares the explanatory material data, which is a data file of the explanatory material together with the page identification number indicating the order of the explanation in advance, on the recording medium.
The operation of the screen supply processing executed by the computer 1 when the presenter gives an explanation using the document camera device will be described with reference to the flowchart shown in FIG.
[0015]
S1, the presenter starts the material screen supply program by the computer 1 and inserts the prepared recording medium into the recording medium reading / writing unit 15.
The control section 11 of the computer 1 reads the explanatory material data from the recording medium inserted in the recording medium reading / writing section 15 by the recording medium reading / writing section 15, arranges them in the order of the page identification numbers, and stores them in the storage section 12. At the same time, the current page identification number is set to “0” and stored in the storage unit 12, while the last page identification number is extracted and stored in the storage unit 12.
[0016]
At the same time, the control unit 11 supplies the start screen such as the title of the explanatory material to the screen display device 2 by the display unit 13 and displays the start screen on the display screen 3.
S2: When the supply of the start screen is completed, the control unit 11 waits in an input interrupt waiting state for waiting for a signal from the input unit 14.
The presenter clicks the button of the mouse 4 to switch the document screen for explanation with the mouse 4.
[0017]
When this signal is received by the input unit 14 and sent to the control unit 11, the control unit 11 branches to step S3 in response to this.
S3, the control unit 11 sets a display page based on a signal from the input unit 14.
That is, if the signal from the mouse 4 is a "left click" signal, the current page identification number of the storage unit 12 is updated by adding "1" to display the next material screen, and the "right click" signal is displayed. If it is a signal, it is updated by subtracting “1” from the current page identification number to display the previous material screen.
[0018]
S4, the control unit 11 compares the updated current page identification number with the last page identification number stored in the storage unit 12, and if the updated current page identification number is larger than the last page identification number, ends. And terminate the material screen supply program. Otherwise, the process moves to step S5.
S5, if the updated current page identification number is equal to or less than “0”, the control unit 11 determines that an error has occurred and proceeds to step S6. If the updated current page identification number is larger than "0", the process proceeds to step S7.
[0019]
S6, the control unit 11 generates an error screen indicating that a page preceding the first material has been designated, supplies the error screen to the screen display device 2 by the display unit 13, and displays the material displayed on the display screen 3. The display is superimposed on the screen, and the process returns to step S2 to wait in an input interrupt waiting state.
The presenter confirms the content on the displayed error screen, and presses the button of the mouse 4 again to continue the description.
[0020]
S7, the control unit 11 performs a material screen creation process.
That is, the control unit 11 specifies the explanatory material data having the corresponding page identification number of the explanatory material data stored in the storage unit 12 based on the updated current page identification number, A material screen is created by adding predetermined contents.
S8, the control unit 11 supplies the material screen to the screen display device 2 by the display unit 13 and displays it on the display screen 3, and returns to step S2 to wait in an input interrupt waiting state.
[0021]
In this manner, the information screen for explanation is displayed on the display screen 3 of the screen display device 2, and the image screen displayed on the display screen 3 is photographed by the camera unit 5 arranged oppositely, and the image data is separated. Is sent to the projector 7 installed at the place where the user is located, projected on the screen 8 and displayed to the explained person.
At this time, the camera unit 5 is used for a fingertip or a pen pointing to a part of the material screen displayed on the display screen 3, a real sample placed on the material screen, a printed matter that cannot be filed in time, a lecture hall, or the like. Since an object to be photographed such as a printed matter is also photographed at the same time, image data of the photographed object can be projected on a screen and displayed.
[0022]
By repeating this operation sequentially, the explanation by the presenter ends.
As described above, in the present embodiment, the explanatory material converted into a data file is supplied to the screen display device as a material screen and displayed on the display screen, and the object to be photographed such as a fingertip on the screen, a real sample, or a printed material is used. Is displayed together with the camera unit and displayed to the explained person, so that the operation of the explaining person due to switching of the apparatus can be simplified, and an image can be displayed at an appropriate timing.
[0023]
In addition, this makes it possible to display a finger such as a finger pointing to a part described on the document screen, a rotation display of the real sample, and a document such as a printed material shown on the spot, thereby facilitating the understanding of the non-explanator.
It should be noted that the creation of the material screen described in step S7 is performed such that when the material data for the explanation is read from the recording medium in step S1, the material screen is created and stored in the storage unit in the order of explanation, and is sequentially displayed. It may be. As a result, the screen switching time can be reduced.
[0024]
Further, a drawing function or the like may be added to the material screen supply program itself to create an explanatory material, and this may be stored in the storage unit as material screen data and used.
Furthermore, the display screen of the screen display device has been described as being substantially horizontal.However, the display screen is installed diagonally, the camera unit is supported by a movable support, and can be arranged to face the display screen, and a frame for preventing the material from falling is provided. It may be provided. This can reduce the presenter's fatigue.
[0025]
Example of the second embodiment
4 is a perspective view showing the second embodiment, FIG. 5 is a display example of the display screen, FIG. 6 is a side view showing the camera unit, FIG. 7 is a block diagram showing the camera position detecting device, and FIG. It is a block diagram showing the computer.
The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0026]
In FIG. 4, reference numeral 21 denotes a screen display device, which is connected to the computer 1 and has a large display screen 22 such as an LCD capable of displaying a clear image, a touch panel which covers the display screen 22 and can be seen through. It comprises a combination with a screen position detecting means 23 such as a tablet, etc., and displays a material screen or the like supplied from the computer 1 while detecting and outputting a coordinate position on the display screen 22 by the screen position detecting means 23. I do.
[0027]
The large display screen 22 is divided into a material screen display area 24, an auxiliary screen display area 25, and a button display area 26 as shown in FIG. 5, and the following screens are displayed in the respective areas.
In the material screen display area 24, a material screen of explanatory materials is displayed, and a set guide 27 indicating the field of view of the camera unit 5 is displayed.
[0028]
In the auxiliary screen display area 25, auxiliary materials other than explanatory materials such as an explanatory manuscript and a patient's chart are displayed.
In the button display area 26, operation buttons are displayed. A "print" button for printing a hard copy of the screen of the material screen display area 24, a "save" button for saving the contents as data, and a next material "Next page" button to switch to the screen, "Previous page" button to return to the previous material screen, and "OHP" to change the background color when displaying a transparent sheet such as an OHP sheet Button is displayed.
[0029]
Reference numeral 28 denotes an image distribution device, which displays image data captured by the camera unit 5 on a display or a terminal installed at a remote place such as a remote place by a communication network 29 using a LAN (Local Area Network) or a communication line. It has a function of converting image data into a language that can be used by the communication network 29 and transmitting the converted image data.
[0030]
A printer 30 prints print data output from the computer 1 on paper sheets.
In FIG. 6, reference numeral 31 denotes a camera position detecting device, which detects the position of the camera unit 5 installed reciprocally on the column 6.
When the camera unit 5 is positioned at the end opposite to the display screen 22 of the support post 6 so that the photographing magnification can be changed, the material screen display area 24 is displayed in the field of view of the camera unit 5. Is configured so that all of the material screens are included, and when the camera unit 5 is brought close to the display screen 22 by an explainer or the like, the photographing magnification is increased, and the material screen portion is enlarged and photographed. Have been.
[0031]
In FIG. 7, reference numeral 32 denotes a camera position sensor such as a potentiometer, which is incorporated in the camera position detecting device 31 and detects the position of the camera unit 5 which is reciprocally mounted on the support column 6. The change is output as a change in voltage value or the like as position information.
Reference numeral 33 denotes a position detection circuit, which is incorporated in the camera position detection device 31, and converts an analog value of the position information output from the camera position sensor 32 into a digital value and an AD (Analog to Digital) conversion circuit 34. An interface circuit 35 outputs the converted position information to the input unit 14 of the computer 1.
[0032]
In FIG. 8, reference numeral 41 denotes a communication unit which is connected to the communication network 29 and has a function of mutually converting into a language that can be used in order to mutually communicate between the control unit 11 and the communication network 29. Have.
A printing unit 42 has a function of converting print data sent from the control unit 11 into data that can be printed by the printer 30.
[0033]
The input unit 14 is connected to the screen position detecting means 23 provided in the screen display device 2 and the position detecting circuit 33 of the camera position detecting device 31. It has the function of converting to data.
The operation of the above configuration will be described.
The explainer prepares the explanation material in advance as a data file together with the supplementary material such as the explanation manuscript and the page identification number indicating the order of the explanation, and converts the explanation material data into a recording medium or a server connected to the communication network 29 or a personal computer of the explainer. Record and prepare.
[0034]
The operation of the screen supply process executed by the computer 1 when the presenter gives an explanation using the document camera device will be described with reference to the flowcharts shown in FIGS.
Note that the step names are indicated by S in FIG. 9, FIG. 10 by SA, FIG. 11 by SB, FIG. 12 by SC, FIG. 13 by SD, and FIG. 14 by SE.
[0035]
In S11 (FIG. 9), the presenter starts up the material screen supply program by the computer 1 and inserts the prepared recording medium into the recording medium reading / writing section 15.
The control unit 11 of the computer 1 reads the explanatory material data from the recording medium inserted in the recording medium reading / writing unit 15 by the recording medium reading / writing unit 15, arranges the data in the order of the page identification number, and stores it in the recording unit 12. At the same time, the current page identification number is set to “0” and stored in the storage unit 12, while the last page identification number is extracted and stored in the storage unit 12.
[0036]
In parallel with this, the control unit 11 supplies the start screen such as the title of the explanatory material to the screen display device 21 by the display unit 13 and displays it in the material screen display area 24 of the display screen 22 shown in FIG.
At this time, on the screen of the button display area 26, operation buttons of “print”, “save”, “previous page”, “next page”, and “OHP” buttons are displayed.
[0037]
If the explanatory material data is recorded on a server or the like, the explainer inputs the address of the server or the like on which the explanatory material data is recorded, and the control unit 11 communicates with the communication unit 41 via the communication network 29. It connects to a server or the like at the input address, and reads and acquires the recorded explanatory material data.
S12, when the supply of the start screen is completed, the control unit 11 waits in an input interrupt waiting state for waiting for a signal from the input unit 14.
[0038]
Further, the control unit 11 performs a multitask process of executing a process of monitoring a change in the position of the camera unit 5 in step S24 described later in parallel.
When it is necessary to switch the material screen, the presenter presses the “next page” or “previous page” button displayed in the button display area 26 of the display screen 22 of the screen display device 21 with a finger.
[0039]
When it is necessary to add a handwritten description to a specific portion of the current page of the material screen displayed in the material screen display area 24, a finger, a pen, a pencil, or the like (hereinafter, finger, etc.) is added to the material screen. Touch to describe its contents.
If it is necessary to print the currently displayed screen, press the “print” button. If it is necessary to save this on a recording medium or the like, press the “save” button with a finger or the like.
[0040]
If it is necessary to change the background color for displaying a transparent sheet such as an OHP sheet or a real sample, the “OHP” button is pressed with a finger or the like.
The signal indicating that the operation button has been pressed is detected by the screen position detecting means 23. When the input unit 14 receives this detection signal and sends it to the control unit 11, the control unit 11 branches to step S13 upon this.
[0041]
The determination of the type of the operation button or the like is performed by the control unit 11 by determining the coordinate position of the position where the finger or the like detected by the screen position detection unit 23 touches the screen and the coordinate position of the preset operation button or the like. Perform by collation.
S13, the control unit 11 proceeds to step S14 if the signal from the input unit 14 is a signal that the "next page" button or the "previous page" button is pressed, and proceeds to step S19 if it is any other signal.
[0042]
S14, the control unit 11 sets the display page.
That is, if the signal from the input unit 14 is a signal indicating that the “next page” button has been pressed, the control unit 11 updates the current page identification number of the storage unit 12 by adding “1”, and updates the “previous page” button. If the signal is a pressed signal, "1" is subtracted from the current page identification number and updated.
S15, the control unit 11 compares the updated current page identification number with the last page identification number stored in the storage unit 12, and if the updated current page identification number is larger than the last page identification number, terminates. Judge and terminate the material screen supply program. Otherwise, the process moves to step S16.
[0043]
S16, if the updated current page identification number is equal to or less than "0", the control unit 11 determines that an error has occurred and proceeds to step S23. If the updated current page identification number is larger than "0", the process proceeds to step S17.
S17, the control unit 11 performs a material screen etc. creation process.
That is, the control unit 11 specifies the explanatory material data having the corresponding page identification number of the explanatory material data stored in the storage unit 12 based on the updated current page identification number, and displays the display frame on the explanatory material. For example, a material screen is created by adding predetermined contents such as the above, and an auxiliary screen is created using auxiliary materials such as an explanation manuscript thereof.
[0044]
S18, the control unit 11 supplies the material screen and the auxiliary screen to the screen display device 21 by the display unit 13, and displays the respective screens in the material screen display area 24 and the auxiliary screen display area 25 of the display screen 22, and step S12. And waits in the input interrupt waiting state.
The presenter explains the material screen while referring to the auxiliary screen.
[0045]
S19, when the signal from the input unit 14 is the input of handwriting data from the screen position detecting means 23, the control unit 11 branches to step SA1 shown in FIG. Otherwise, the process moves to step S20.
SA1, the control unit 11 performs a handwritten screen generation process.
That is, the screen position detecting means 23 sequentially detects the coordinate positions of figures and characters described by the presenter while touching the screen of the material screen display area 24 with a finger or the like, and outputs the coordinate positions to the input unit 14. Is sent to the control unit 11.
[0046]
The control unit 11 sequentially stores the coordinate positions, and after a lapse of a predetermined time, based on the sequentially stored coordinate positions, sets the locus as a line of a predetermined color and a predetermined thickness, and sets the background color to be transparent. Generate a handwritten screen.
SA2, the control unit 11 supplies the handwriting screen to the screen display device 21 by the display unit 13, and displays the handwritten screen on the material screen of the current page displayed in the material screen display area 24 of the display screen 22.
[0047]
SA3, when the transmission of the predetermined time coordinate position is stopped, the control unit 11 determines that the input of the handwritten data is completed, and returns to the step S12 shown in FIG. Wait in the waiting state.
If the sending of the coordinate position is continued, the process returns to step SA1, and the handwritten screen generation processing is continued.
[0048]
It is to be noted that a "handwritten deletion" button used when the number of handwritten displays becomes too large may be provided on the button display screen 26 so that the handwritten screen can be deleted at any time.
S20, if the signal from the input unit 14 is a signal indicating that the "print" button has been pressed, the control unit 11 branches to step SB1 shown in FIG. Otherwise, the process moves to step S21.
[0049]
SB1, the control unit 11 also includes the material screen of the current page displayed on the material screen display area 24 of the display screen 22 of the screen display device 21 and the handwritten screen when the handwritten screen is displayed in an overlapping manner. Screen information of a currently displayed screen (hereinafter, referred to as a current screen) is acquired.
SB2, the control unit 11 creates print data to be printed by the printer 30 based on the acquired screen information.
[0050]
SB3, the control unit 11 sends the created print data to the printing unit 42, and the printing unit 42 converts the data into data that can be printed by the printer 30, and outputs the data.
The printer 30 that has received the output data prints the data on a sheet or the like.
After the transmission of the print data, the control unit 11 returns to step S12 shown in FIG.
[0051]
S21, if the signal from the input unit 14 is a signal indicating that the "save" button is pressed, the control unit 11 branches to step SC1 shown in FIG. Otherwise, the process moves to step S22.
SC1, the control unit 11 acquires the screen information of the current screen displayed in the material screen display area 24 of the display screen 22 of the screen display device 21.
[0052]
SC2, the control unit 11 creates storage data to be stored in the recording medium based on the acquired screen information.
SC3, the control unit 11 sends the created storage data to the recording medium read / write unit 15, and the recording medium read / write unit 15 records and stores the data on the inserted recording medium.
[0053]
After sending the stored data, the control unit 11 returns to step S12 shown in FIG. 9 via the connector F and stands by in an input interrupt waiting state.
The stored data may be stored in the storage unit 12 or an external storage device (not shown).
S22, if the signal from the input unit 14 is a signal indicating that the "OHP" button has been pressed, the control unit 11 branches to step SD1 shown in FIG. Otherwise, the process moves to step S23.
[0054]
In step SD <b> 1, the control unit 11 temporarily deletes the current screen displayed in the material screen display area 24 of the display screen 22 of the screen display device 21.
In SD2, the control unit 11 sets the background of the real sample to a relatively dark color such as black or dark blue so that the real sample or the material printed on opaque paper is clearly photographed. The background color screen is supplied to the screen display device 21 and displayed in the material screen display area 24 of the display screen 22.
[0055]
In step SD3, the control unit 11 proceeds to step SD4 if the second "OHP" button is pressed within a predetermined time. If the second "OHP" button is not pressed even after the predetermined time, Move to step SD5.
SD4, the control unit 11 sets a transparent material background in which all surfaces of the material screen are made relatively light colors such as white or light blue so that the material printed on a transparent sheet such as an OHP sheet is clearly photographed. The color background color screen is supplied to the screen display device 21 and displayed in the material screen display area 24 of the display screen 22.
[0056]
SD5, the control unit 11 waits in a background color screen end waiting state waiting for the pressing of the “OHP” button again, and determines that the display of the background color screen has ended when the “OHP” button is pressed again, With this as a trigger, the process proceeds to step SD6.
In step SD <b> 6, the control unit 11 erases the background color screen, supplies the temporarily erased current screen to the screen display device 21, and redisplays the screen in the document screen display area 24 of the display screen 22.
[0057]
After the supply of the current screen is completed, the control unit 11 returns to step S12 shown in FIG.
The type of background color may be selected by displaying the type of background color in the auxiliary screen display area 25 or the like.
In step SD2, a "real sample background color" button for displaying the real sample background color on the screen of the auxiliary screen display area 25, a "transparent material background color" button for displaying the transparent material background color, and the current screen May be displayed, and the presenter may select these buttons to switch between each background color and the current screen.
[0058]
This makes it possible to further improve the display timing when displaying the material printed on the OHP sheet immediately after the description of the actual sample.
S23, the control unit 11 performs an error process.
That is, if it is recognized that the updated current page identification number is equal to or less than "0", it accepts that the page preceding the first material screen has been designated, and otherwise receives a signal not included in the program. Then, an error screen for displaying the fact is generated, and the error screen is supplied to the screen display device 21 by the display unit 13 and is displayed on the current screen of the material screen display area 24 of the display screen 22, and the process proceeds to step S 12. Return and wait in the input interrupt waiting state.
[0059]
The presenter confirms the content on the displayed error screen, and continues the explanation by pressing the operation button in the button display area 26 again.
In this manner, a description material screen is displayed on the display screen 22 of the screen display device 22, and a material screen displayed in the material screen display area 24 of the display screen 22 by the camera unit 5 disposed opposite thereto. Real materials, printed matter, and the like are photographed, and the image data is transmitted via a communication network 29 by an image distribution device 28 to a display installed at a remote place such as a home of a telemedicine patient or a student's seat in a lab classroom. And sent to a terminal to be displayed to a explained person such as a patient or a student.
[0060]
When it is necessary to display a material screen or the like to a large number of attendees or the like at a time, such as in a lecture hall, the screen is projected and displayed by a projector in the same manner as in the first embodiment. It may be.
The display of the error screen described in step S23 may be displayed in the auxiliary screen display area 25. This can prevent unnecessary screens from being displayed on the display of the person to be explained.
[0061]
In the above process, when it is necessary to enlarge and display the material screen, the actual material, the printed matter, etc., the presenter brings the camera unit 5, which is reciprocally mounted on the support 6, close to the material screen, and sets the photographing magnification. Is explained by displaying a screen in which a portion such as a material screen is enlarged by enlarging the screen.
Hereinafter, the operation of the screen supply processing executed by the computer in that case will be described with reference to the flowcharts shown in FIGS.
[0062]
S24, the control unit 11 constantly monitors the position of the camera unit 5 by multitask processing based on the output from the position detection circuit 33 of the camera position detection device 31, and the output of the position detection circuit 33 input to the input unit 14. If there is no change, the process waits in a position change input waiting state, and branches to step SE1 shown in FIG.
[0063]
In step SE <b> 1, the control unit 11 acquires the position information of the camera unit 5 through the input unit 14. That is, the camera position sensor 32 outputs the position information of the camera unit 5 as a voltage value or the like, and the analog value is converted by the AD conversion circuit 34 into a digital value.
The position information converted into the digital value is sent to the control unit 11 via the input unit 14 of the computer 1 by the interface circuit 35.
[0064]
The control unit 11 can thereby acquire the distance between the camera unit 5 and the display screen 22 of the screen display device 21 as position information.
In step SE <b> 2, the control unit 11 sets the photographing magnification at which the camera unit 5 photographs the entire material screen display area 24 of the display screen 22 to “1”, and performs photographing based on the distance between the camera unit 5 and the display screen 22 and the acquired position information. Calculate the magnification.
[0065]
The camera position detecting device 31 and steps SE1 and SE2 constitute a photographing magnification detecting means, and the photographing magnification is detected.
In step SE3, the control unit 11 calculates the photographing area of the material screen display area 24 of the display screen 22 photographed by the camera unit 5 based on the detected photographing magnification, and enlarges the photographing area as shown in FIG. A set guide screen is generated in which the set guides 27 in the form of brackets indicating the four corners of the shooting area displayed on a transparent background are displayed.
[0066]
SE4, the control unit 11 supplies the set guide screen to the screen display device 21 by the display unit 13 and displays the set guide screen on the current screen of the material screen display area 24 of the display screen 22 via the connector G as shown in FIG. The process returns to step S24 shown and waits in a position change input waiting state.
As described above, an enlarged document screen or the like is displayed on a screen such as a display of the non-explainer.
[0067]
By repeating the above operations sequentially, the explanation by the presenter ends.
When the above-described enlargement operation is performed while the real sample background color or the transparent material background color is displayed, the set guide 27 is displayed clearly also in the real sample background color or the transparent material background color. , The set guide is displayed in a light color such as white or a dark color such as black.
[0068]
When the presenter enlarges and displays a specific part of the current screen, a “move” button may be provided in the button display area 26 or the like so that the part to be enlarged can be changed.
That is, the presenter presses the “move” button in the button display area 26 after displaying the set guide 27 of the imaging area that is enlarged and displayed in step S24.
[0069]
If the signal from the input unit 14 is a signal indicating that the “move” button has been pressed, the control unit 11 branches to a routine for moving the current screen and displays the material screen on the display screen 22 in the same manner as in step S19 and the like. It waits in an enlarged position input waiting state for waiting for the presenter to touch the current screen displayed in the area 24 with a finger or the like.
The presenter touches the approximate center of the portion of the current screen to be enlarged with a finger or the like, and moves the finger or the like to the approximate center of the set guide 27 displayed in the material screen display area 24 while touching the finger or the like with the screen.
[0070]
In the same manner as in step SA1, the output from the screen position detecting means 23 is sequentially stored by the control unit 11 as movement data, and the movement of the finger or the like is stopped even after a certain period of time. And the start point and end point of the movement are recognized.
When recognizing the start point and the end point of the movement, the control unit 11 performs a movement process of moving the part of the current screen at the start point to the position of the end point, and moves the part of the current screen to be enlarged and displayed to a substantially center position of the set guide 27. Move.
[0071]
This operation is continued until the press of the “move” button or the press of the “end” button or another operation button provided separately is detected, and the control unit 11 is pressed when the button operation is performed. Returning to step S12 shown in FIG. 9 while maintaining the recognition of the pressed button, the process branches to a routine corresponding to the button pressed or pressed in the input interrupt waiting state.
[0072]
As a result, it is possible to enlarge and display a portion of the current screen displayed at a position other than the center of the current screen.
Furthermore, although the change of the photographing magnification of the material screen photographed by the camera unit 5 has been described as being changed by the presenter by directly reciprocating the camera unit 5, a moving mechanism for reciprocating the camera unit 5 by a servomotor or the like is described. The auxiliary screen display area 25 or the button display area 26 is provided with a “zoom UP” button for increasing the imaging magnification and a “zoom DOWN” button for decreasing the imaging magnification so that the imaging magnification is changed. It may be.
[0073]
In this case, the camera unit 5 may be provided with a zoom mechanism and a photographing magnification detecting unit so that the photographing magnification can be changed by the button.
Furthermore, in step S15, the end of the description has been described as being determined based on the fact that the updated current page identification number is larger than the last page identification number. However, an "end" button is provided in the button display area 26, and this button is pressed. The execution of the program may be terminated. As a result, the explanation can be ended at an arbitrary timing, the explanation can be skipped by the explanation materials prepared for the supplementary explanation, etc., and the explanation can be made more efficient.
[0074]
Further, although the description has been made that the display of the material screen is performed sequentially, the page identification number is displayed together with the title of the description material in the auxiliary screen display area 25, and the current page is distinguished by color change or the like. May be selected with a finger or the like to switch the material screen. This can further improve the efficiency of the description.
As described above, in the second embodiment, in addition to the effect of the first embodiment, the part being explained is reliably explained by displaying the handwriting screen on the material screen. Can be communicated to the person, and the understanding of the non-explainer can be further promoted.
[0075]
Also, operation buttons are provided on the display screen of the screen display device, and signals of the operation buttons such as “next page”, “previous page”, “print”, and “save” are controlled by a computer program. Can switch screens and the like only by the display screen, and can further reduce the complexity of operation and display images at appropriate timing, and can omit the mouse and simplify the document camera device. Can be achieved.
[0076]
Further, by making the display screen of the screen display device a large screen and providing the button display area and the auxiliary screen display area outside the field of view of the camera section, unnecessary screen display to the explained person can be prevented. In addition, the presenter can simultaneously refer to data such as the medical chart, attendance table, attendee list, etc., explanatory manuscripts, special notes, etc., and can provide a more detailed explanation.
[0077]
Further, by making it possible to print and save the material screen together with the handwritten screen added thereto, the material used for the explanation can be recorded.
Furthermore, by making it possible to change the photographing magnification of the material screen photographed by the camera unit and displaying the photographing field of view by the set guide, the photographing range becomes clear, and the display loss can be prevented, The place where the actual sample or the printed matter is placed becomes clear, and the time required for the sample alignment can be reduced.
[0078]
This is particularly effective when image data captured by the camera unit is transmitted over a communication network and displayed on a display or the like, because the range of the displayed image is easily recognized.
Furthermore, when displaying a real sample or a printed matter, the background color is set to one of a dark color or a light color and displayed as a material screen, so that a clear display can be made even with a real sample or a printed matter using a transparent sheet. It can be carried out.
[0079]
In addition, by being able to acquire explanatory material data via a communication network, explanations can be provided simply by bringing a real sample or printed matter for supplementary explanation, and the Internet, etc. Thus, it is also possible to acquire explanatory material data from a plurality of servers, and it is possible to explain without carrying a document camera device.
[0080]
Third embodiment
FIG. 15 is a perspective view showing the third embodiment, and FIG. 16 is an explanatory view thereof.
The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
15 and 16, a mirror 51 is provided near the display screen 3 of the screen display device 2, and is a mirror surface 52 inclined so that the image of the face of the presenter enters the field of view of the camera unit 5 by reflection. have.
[0081]
The operation of the above configuration will be described.
When the presenter gives an explanation while looking at the document screen of the display screen 3 of the screen display device 2, the image of the presenter's face is reflected by the mirror surface 52 of the mirror 51, and the presenter's face is photographed by the camera unit 5. .
The image captured by the camera unit 5 is sent to the projector 7 and displayed on the screen 8 together with the face of the presenter.
[0082]
Thereby, in addition to the effect of the first embodiment, a camera separately provided for photographing the face of the presenter can be omitted, the document camera apparatus can be simplified, and the expression of the presenter can be displayed on the document screen. At the same time, it can be communicated to the explained person. This is particularly effective when the explained person is a patient or a student, since the sense of security of the explained person can be increased.
[0083]
In each of the above embodiments, the screen position detecting means is described as detecting the position on the screen by touching and pressing the screen with a finger or the like, but detecting the position on the screen by ultrasonic waves or radio waves. If a tablet or the like is provided as a screen position detecting means, the same effect as that of the present invention can be obtained by using a pen or the like having a built-in ultrasonic or radio wave transmitter used for it.
[0084]
Further, in each of the above embodiments, the computer, the screen display device, the camera unit, and the camera unit have been described separately. However, these may be integrated into one device, or may be packed in one housing. . This facilitates the carrying of the document camera device.
In this case, the projectors may be separate or may be incorporated in an integrated device.
[0085]
【The invention's effect】
As described above, the present invention supplies a data file of explanatory materials as a material screen to a screen display device and displays the material on the display screen. Since the camera unit captures the image and displays the image to the person to be explained, it is possible to eliminate the complexity of the operation of the presenter due to switching of the apparatus and the like, and obtain an effect that the image can be displayed at an appropriate timing. Can be
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment.
FIG. 2 is a block diagram showing a computer according to the first embodiment;
FIG. 3 is a flowchart illustrating a screen supply process according to the first embodiment;
FIG. 4 is a perspective view showing a second embodiment.
FIG. 5 is a display example of a display screen according to the second embodiment.
FIG. 6 is a side view showing a camera unit according to the second embodiment.
FIG. 7 is a block diagram illustrating a camera position detection device according to a second embodiment.
FIG. 8 is a block diagram showing a computer according to a second embodiment;
FIG. 9 is a flowchart 1 showing a screen supply process according to the second embodiment.
FIG. 10 is a flowchart 2 showing a screen supply process according to the second embodiment.
FIG. 11 is a flowchart 3 showing a screen supply process according to the second embodiment.
FIG. 12 is a flowchart 4 showing a screen supply process according to the second embodiment.
FIG. 13 is a flowchart 5 showing a screen supply process according to the second embodiment.
FIG. 14 is a flowchart 6 illustrating a screen supply process according to the second embodiment.
FIG. 15 is a perspective view showing a third embodiment.
FIG. 16 is an explanatory view showing a third embodiment.
[Explanation of symbols]
1 computer
2,21 screen display device
3,22 display screen
4 mouse
5 Camera section
6 props
7 Projector
8 screen
11 Control part
12 Storage unit
13 Display
14 Input section
15 Recording medium read / write unit
23 Screen position detecting means
24 Document screen display area
25 Auxiliary screen display area
26 Button display area
27 Set Guide
28 Image distribution device
29 Communication Network
30 Printer
31 Camera position detection device
32 Camera position sensor
33 Position detection circuit
34 AD conversion circuit
35 Interface Circuit
41 Communication unit
42 Printing Department
51 mirror
52 mirror surface

Claims (7)

A camera unit and a screen display device that displays a material screen supplied from the outside,
The display screen of the screen display device and the camera unit are disposed to face each other, and the camera unit photographs both the material screen of the display screen and the object to be photographed interposed between the camera unit and the material screen. A document camera device for displaying image data. In claim 1,
A screen position detecting means for covering the display screen on the display screen, wherein a trajectory of handwritten data obtained by the screen position detecting means is displayed so as to be superimposed on a material screen of the display screen; apparatus. In claim 2,
A material screen supply device for supplying a material screen from the outside to the screen display device is provided, an operation button is displayed on the display screen, the selected operation button is detected by the screen position detection means, and the detection signal And a document camera device for controlling the document screen supply device. In claims 1 to 3,
A document camera, wherein a mirror for reflecting the face of the presenter is provided in the vicinity of the display screen, and wherein the camera unit captures an image of the face of the presenter reflected on the mirror together with a document screen of the display screen. . In claims 1 to 4,
The camera unit is a camera unit capable of changing the photographing magnification, and is provided with a photographing magnification detecting unit that detects the photographing magnification, and the camera unit that can change the photographing magnification based on the photographing magnification detected by the photographing magnification detecting unit. A document camera apparatus, wherein a photographing area is displayed so as to be superimposed on a material screen of the display screen. In claims 1 to 5,
A document camera apparatus, wherein a document screen displayed on the display screen is temporarily erased, and a background color is displayed on all surfaces thereof. A camera unit and a screen display device for displaying a document screen are provided,
A control unit of a material screen supply device for supplying a material screen to the screen display device,
Material screen output means for supplying a material screen to the screen display device,
Handwriting data receiving means for receiving handwriting data obtained by a screen position detecting means provided on a display screen of the screen display device,
Handwriting screen display means for displaying the material screen and the trajectory of the handwriting data in an overlapping manner,
Operation button display means for displaying operation buttons on a display screen of the screen display device,
Detection signal receiving means for receiving a detection signal of the selected operation button by the screen position detecting means,
A program for a document camera apparatus, which functions as selection processing branching means for branching to the selected processing according to the detection signal.

Images