JPH0329186Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] This invention relates to an electronic blackboard device that prints information such as characters and figures written on a writing board. The present invention relates to an electronic whiteboard device that can display multiple screens on one screen.

[Technical background of the invention] Electronic whiteboard devices are broadly divided into the following two types. In the first type, the writing board is composed of a flexible sheet, and when printing information such as characters written on this sheet, the sheet is sequentially scanned by a scanning section that optically scans the sheet and reads the information. It moves and operates the printer in response to signals from the scanning section. In the second type, the writing board is composed of a handwriting input board such as a digitizer,
Information entered with a marker or the like on the handwritten input board is displayed on the input board and sent to the control unit in real time, image data is sequentially stored, and the printer is operated in response to the arrival of a print instruction signal.

In order to provide an electronic blackboard device with the function of writing on multiple screens, in the former type, it is possible to make the writing board longer and configure it to have multiple screens. All you have to do is rewind the writing board and check each screen to find the desired screen. In addition, in the latter format, it is only necessary to increase the storage capacity of the storage device so that multiple screens can be stored, and to search for a desired screen, the image data for each screen can be sequentially retrieved from the storage device via the control unit. Bye. However, in the former type, rewinding the writing board is cumbersome and inconvenient, and it has also been proposed to provide a storage device to temporarily store the writing, as in the latter type. However, it is still impossible to search for a desired screen unless it is called up one screen at a time, and there are disadvantages that not only the operation is complicated but also the search takes a long time.

[Purpose of the invention] The purpose of this invention is to store multiple screens, display each screen sequentially on an image display device, and store the multiple screens so that they can be compressed and displayed on one screen. It is an object of the present invention to provide an electronic blackboard device that displays the screen on an image display device and facilitates screen search.

[Structure of the invention] The electronic whiteboard device of this invention includes a screen storage device that stores a plurality of screens for each screen, and image data of each screen that is reduced by a control unit so that the plurality of screens are displayed on one screen. The present invention is characterized by having a reduction storage device that stores the image data, and an image display device that selectively displays the image data stored in the screen storage device and the reduction storage device.

[Example] Hereinafter, this invention will be described with reference to an example shown in the drawings. In this embodiment, four screens are stored, and these four screens are stored in one screen.
This shows the case where two screens are reduced and displayed.
The electronic blackboard device includes a writing board 1 comprising a magnetostrictive or electromagnetic induction digitizer, etc., whose trajectory can be visually traced by tracing the surface with a marker (not shown), and an image on the writing board 1. A control section 2 for controlling signals, an image information storage device 3 for storing image data signals from the control section 2 and transmitting the stored image data signals to the control section 2, and an image information storage device 3 for storing image data signals from the control section 2, It has an image display device 4 such as a CRT that displays stored image information via a control section 2. The electronic whiteboard device further includes a printer 5 that prints the image information stored in the image information storage device 3 according to an instruction signal from the control unit 2, and a printer 5 that erases the image on the writing board 2.
It has an operation console 6 for sending control signals for controlling the image information storage device 3 to the control section 2.

The image information storage device 3, as shown in FIG.
It is composed of first, second, third, and fourth storage devices 7, 8, 9, and 10, each of which stores one screen, and a reduced image storage device 11 that stores these four screens in a reduced form. ing. The reduction of the four screens is performed by the control unit 2, and the method for doing so is as shown in part in FIG. , 4 dots of data are ORed to determine one print dot for reduction. When processed according to such an algorithm, reduced image data 13 as shown in FIG. 3b is obtained. As a result, one screen is reduced to one-fourth, and the reduced image storage device 11 divides the screen into four. For example, the screen of the first storage device 7 is in the upper left, and the screen of the second storage device 8 is in the upper right. , the screen of the third storage device 9 is at the bottom left, and the screen of the fourth storage device 10 is at the bottom right,
It is arranged as follows.

The operation console 6 includes a clear switch 14 for clearing the image display device 4 and a call switch 1 for calling the previous screen on the image display device 4.
5, and a simultaneous display switch 16 for instructing the image display device 4 to simultaneously display the previous four screens. switch 14, 1
The switch 5 is composed of a one-push type push button switch, etc., while the switch 16 is composed of a double-push type push button switch, etc., so that when it is turned on for the first time, it turns on the simultaneous display, and when it is turned on for the second time, it cancels the simultaneous display. to the control unit 2. Although the mounting positions of these switches 14, 15, and 16 are not shown, they may be provided integrally with the image display device 4 or may be provided on the frame portion of the writing board 1.

Next, to explain the operation and operation of this electronic whiteboard device, when the screen of the writing board 1 becomes full, the clear switch 14 of the operation console 7
When pressed, the control unit 2 instructs the image display device 4 to store the image data in, for example, the first storage device 7, and also clears the image display device 4 to enable display of the next image data. . Next, when the screen of the writing board 1 becomes full, if the clear switch 14 is pressed again, the control unit 2 instructs to store the image data in the second storage device 8,
Clear the screen of the image display device 4. In this way, one screen is sequentially stored in each of the four storage devices 7, 8, 9, and 10. To call up these image data onto the image display device 4, press the call switch 15 on the operation console 7.
For example, the fourth storage device 10 is currently stored on the image display device 4.
If the contents of the third storage device 9 are displayed on the image display device 4, the contents of the third storage device 9 will be displayed on the image display device 4. and call switch 1 of operation console 7
Each time 5 is pressed, the display contents change in the order of the second storage device 8 and then the first storage device 7.

When displaying these four screens at once, when the simultaneous display switch 16 of the operation console 7 is pressed, the control unit 2 displays the first to fourth storage devices 7, 8, 9, 10.
The content of the data is read out, all data is reduced according to the algorithm described above, the data is stored in the fifth storage device 11, and this data is output to the image display device 4. As a result, the four screens are displayed together in a reduced form on the image display device 4, making it easy to search for a desired screen. By pressing the simultaneous display switch 16 again, the batch display is canceled and the normal one-screen display can be restored.

In the above embodiment, image data is input to the fifth storage device 11 after each screen is reduced in the control unit 2, but the fifth storage device 11 is inputted after reducing the image data. A reduction circuit,
It may also be configured with a storage circuit that stores the reduced image data that is the output of this reduction circuit. In this case, the control unit 2 stores the video signal from the writing board 1 in the storage devices 7, 8, 9, 10 according to the instruction signal from the operation console 7, or The video signal is stored in the storage device 11
or these storage devices 7, 8,
It is only necessary to control the video signals 9, 10, and 11 to be sent to the image display device 4 or the printer 5. Therefore, the number of reduced screens can be increased or decreased by simply changing the function of the reduction circuit of the reduction storage device as well as increasing or decreasing the number of storage devices.

[Effects of the invention] As described above, the electronic whiteboard device of this invention stores a plurality of screens in a storage device for each screen, and displays each screen on an image display device by calling up these storage devices. Since multiple screens can be reduced and displayed all at once on one screen, a desired screen can be searched from the screens displayed all at once. There is no need for operations such as calling up and confirming each screen one by one as in the past.

[Brief explanation of drawings]

FIG. 1 is a block diagram schematically showing an embodiment of the electronic whiteboard device of this invention, FIG. 2 is a block diagram showing the configuration of the storage device of FIG. 1, and FIG. 3a is a block diagram showing the configuration of the storage device of FIG. FIG. 3B is an explanatory diagram showing a part of the image data shown in FIG. 3A, and FIG. 4 is a plan view showing the operation console. In the drawings, 1 is a writing board, 2 is a control unit 2, 3 is an image information storage device, 4 is an image display device, 6 is an operation console, and 7, 8, 9, 10, and 11 are storage devices.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A writing board for handwritten input; the information written on the writing board is scanned and read optically or electrically; and after the image data is temporarily stored, a printer In an electronic whiteboard device configured to print, a screen storage device stores a plurality of screens for each screen, and image data of each screen reduced so that the plurality of screens are displayed on one screen by a control unit. What is claimed is: 1. An electronic whiteboard device comprising: a reduction storage device that stores the image data; and an image display device that selectively displays the image data stored in the screen storage device and the reduction storage device. (2) Utility Model Registration The electronic blackboard device according to claim 1, wherein the reduction storage device constitutes one dot for reduction by ORing a plurality of adjacent dot data.