JPS62131660A - Picture display device - Google Patents

Abstract

PURPOSE:To eliminate the limitation of original setting by generating a mark on a display screen of a display device and controlling an electric signal of the picture based on the position on the picture displayed by the mark so as to facilitate the generation of original. CONSTITUTION:A marker of picture display is generated by a pattern generator (PG) 23, read by a video exclusive RAM (V-RAM) 24, controlled by a CPU 15 and a graphic display control (GDC) 25 and displayed. In depressing a wipe button/scroll button of an operation section, a pointer operation lever moves the marker to input an optional position and a pattern at an optional position is displayed or erased by the software incorporated in advance and the DGC 25. Thus, the original is received at any time by the CPU 15 and the GDC 25.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an image display device, and in particular, to an image display device that electronically images a document and converts it into an electrical signal instead of optically projecting the document.
The present invention relates to an image display device that processes and displays images electronically.

(Prior Art) Conventionally, there is an overhead projector (OHP) as a device of this type, in which a placed original is optically enlarged and projected onto a screen using an optical device.

(Problems to be Solved by the Invention) However, in the apparatus having the above configuration, it is necessary to create a transparent original, and moreover, it is necessary to set the original to be located in the center with respect to the screen to be projected. For this reason, there are problems in that when the projected image is viewed from the rear of the device, some parts of the projected image cannot be seen, and the projected image is dark, requiring the room to be darkened.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image display device which eliminates the above-mentioned problems, allows easy creation of originals, eliminates various restrictions when printing originals, and allows image reception to be set arbitrarily.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an image display device that: (1) images a document to be displayed, converts it into an electrical signal, and displays this electrical signal; Display the image on the screen. Therefore, a mark is generated on this screen, the position on the image is input using this mark, the electrical signal of this mark is superimposed on the electrical signal of the document, and the position on the image displayed by this mark is determined. The electric signal of the image is controlled as a reference.

(2) A plurality of memory groups are provided for capturing an image of a document and converting it into an electrical signal, converting the electrical signal into a digital signal and storing it, and reading out the signals from the memory and displaying the image on the screen. This is what I did.

(Function) According to the present invention, an image of a document to be displayed is captured and converted into an electrical signal, and this electrical signal is displayed as an image on the display screen, and a mark is generated on the screen, and this mark can be used to The electrical signal of this mark is superimposed on the electrical signal of the document, and the electrical signal of the image is controlled based on the position on the image displayed by this mark. Further, a plurality of memory groups are provided for capturing an image of a document and converting it into an electric signal, converting the electric signal into a digital signal and storing it, and reading out the signals from the memory and displaying the image on the screen. Therefore, it is easy to create a manuscript, and there are no restrictions on the cents of the manuscript. Further, the image reception of the original can be set as desired.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic block diagram of an image display device according to the present invention.

In the figure, 1 is an imaging device, 2 is an image receiving device, 3 is a screen control device for the image receiving device, 4 is a recording/reproducing device, 5 is a hard copy device, 6 is an electronic control device that controls the whole, and 7 is an RF coupler. It is.

First, a document is photographed by the imaging device 1, and an electronically controlled bag W6 is photographed.
The image is projected onto the image receiving device 2 via the . The screen of the image receiving device 2 can be controlled by a screen control device 3 such as scrolling, wiping, and arrow instructions. Further, the screen can be recorded on a recording medium by the recording/reproducing device 4. Note that this recording is recorded in a predetermined area of the medium for each screen and can be played back arbitrarily or sequentially.

Furthermore, a hard copy of the screen projected onto the image receiving bag W2 can be made by the hard copy device 5.

Note that the screen recorded on the recording medium by the recording/reproducing device 4 can also be projected onto the image receiving device 2 via the electronic control device 6 or directly.

Further, the image can be directly projected by the image capturing device 1 or the image receiving device 2. In this case, if the image receiving device 2 is a TV receiver, an RF coupler 7 is used.

Next, an embodiment of the present invention will be described in detail based on FIG.

As shown in this figure, a video signal captured by a TV camera as an imaging device is transmitted from a terminal 10 to a video separation unit 1.
1 to the RGB separation unit 12, where the RGB
It is read into the CPU (Central Processing Unit) 15, synchronized with the DMA by the DMA (Direct Memory Access) synchronizer 13, subjected to 48-bit AD conversion by the ADC (A/D converter) 14, and read into the CPU 15. On the other hand, the signal from the operation unit passes from the terminal 17 to the control input unit 18 and the I10 boat 19.
It is input to the CPU 15. The image display marker (see Figure 4) is provided by a pattern generator (PG) 23.
, is read into the video-dedicated RAM (V-RAM) 24, and is controlled and displayed by the CPU 5 and the graphic display control (GDC) 25.

Furthermore, an FDD (floppy disk device) 20, a hard copy device 21, and a transmission system 22 can be connected to the 110 boat 19. Note that not only FDDs but also hard disks, optical disks, etc. can be connected.

Next, functions that can be controlled by the operation section will be explained with reference to FIGS. 2 and 3.

(1) Pointer Display any position on the screen as a marker.

The marker can be, for example, an arrow, as shown in Figure 4, 16 x 16 do soto or 24 x
It is made up of 24 dots, generated by the pattern generator 23, read out via the V-RAM 24, and stored in the GDC 2.
5 will be displayed on the display.

The V-RAM 24 is a RAM separate from the CPU 15 and is a dedicated video RAM prepared for speeding up the video. To move the marker, use the pointer control lever (
joystick) 41, pointer operation lever 4
The input switch 5W42 provided at 1 can produce a flash indicating the position for the first few seconds.

Further, the direction of the marker is changed by rotating it by 360 degrees at an angle of 906 every time the marker one-way conversion 5W43 of the operation section is pressed.

(2) After pressing the wipe button 44/scroll button 45 on the wipe/scroll operation section, move the marker with the pointer operation lever 41,
By inputting an arbitrary position, the screen at the arbitrary position can be turned off or displayed using pre-installed software and the GDC 25.

(3) To color the operation section, press the button 46, move the marker with the pointer operation lever 41, and input the desired position. Using the pre-installed software and GDC 25, you can select any color on the screen. You can color, underline, etc. at specified positions.

(4) After pressing the zoom up button 47 or the zoom down button 48 on the zoom amplifier/zoom down operation section, move the marker with the pointer operation lenomaer 41 and enclose the part you want to enlarge, and the screen will be displayed using the pre-prepared software and GDC25. The specified portion above can be enlarged digitally.

If the zoom down button 48 is pressed from the zoom up state, the state returns to the state before zoom amplification (reduction).

The zoom amplifier reads the main memories M and 27 using the DMA 26, writes the enlarged contents using pre-prepared software and the CPU 15 to the refresh memory M228, and outputs the TV image signal (composite/soto signal) via the parallel/serial converter 29 and DAC 30. ) and display it on the TV screen. In this case, since the bits are complemented by digital processing, the screen can be kept clear.

(5) Inside the screen composition device, there are two screens worth of memory M, (main memory RGB) 27, memory M2 (refresh memory R
GB) 28, and by pressing the memory M button 49 and the memory M2 button 50 of the operation section simultaneously, the memories M1 and M2 can be combined (overlaid). Of course, if the memory M button and the memory M2 button are pressed individually, each screen will be displayed.

In the case of monochrome, RGB signals are not required, so it can be used as 6 screens.

Reading of memory M+27 and memory M228 is done by DMA.
26 and GDC25, parallel/serial converter 2
After DA conversion by DAC 30 through 9, the TV
Output as an image signal (composite signal).

In addition, 31 is an RGB terminal, 32 is a video terminal, and 33 is an R
F coupler 34 is a TV antenna terminal.

In addition, the operating section is designed to minimize the number of switches (and simplify operations).

FIG. 5 is an overall block diagram of an image display device showing a second embodiment of the present invention, and is a circuit in which screen zoom-up and screen compositing functions are excluded from the functions of the image display device shown in FIG. .

As shown in this figure, a video signal captured by a TV camera as an imaging device is processed by an RGB separation unit 51 into an RGB
The image is separated into two parts and displayed as is on a display (for example, a TV receiver).

On the other hand, a synchronization signal is read into the CPU 15 via the synchronization section 52.

Markers made with PG23 are stored in video-dedicated RAM (
V-RAM) 24, and the GDC 25 and CPU 1
Controlled by 5, TV video signal (composite signal)
It is superimposed on the TV receiver as a.

FIG. 6 is an overall block diagram of an image display device showing a third embodiment of the present invention, which further simplifies the functions of the image display device shown in FIG. I can only do white or intermediate colors between black and white.

As shown in this figure, the marker created by the PC 23 is read out by the V-RAM 24, and the CPU 15 and GDC 2
5, the brightness modulation section 53 applies brightness modulation, and superimposes the image on the TV receiver.

With this configuration, the following features not found in conventional HPs are provided.

■It is possible to project the original using electronic means instead of enlarging the screen using optical means.

■Various types of displays can be used as image receiving devices, such as TV receivers, CRTs, Super Vision, and TV projectors - 1L.
ED, EL, plasma, etc. can be used (RF
(also includes a built-in module).

■Any number of displays can be connected by adding a separator. Therefore, people near and far can be viewed under the same conditions.

■When the display is embedded in the table, it becomes an individual display, and when not in use, it can be used as a regular table.

(2) The display screen is controlled by the CPU 15 and GDC 25 shown in FIG. 2, and the image of the document can be received at will by operating the operation section described above.

■Floppy disks, hard disks, optical disks, etc. can be connected, and approximately 40 screens can be inserted with FDD I Mbit. 40 pieces of conventional 0HP corresponds to 1 piece of FDD, making it convenient to carry.

■By adding a transmission function, it becomes possible to apply it to TV conferences.

■The manuscript that can be set can be any type of manuscript, such as handwritten plain paper, printed matter, or OHP film.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As described above in detail, according to the present invention, (1)
an imaging means for capturing an image of a document and converting it into an electrical signal; a means for displaying the electrical signal as an image on a display; a means for generating a mark on the screen; and a means for inputting a position on the image using the mark. means for superimposing the electric signal of the mark on the electric signal of the document; and means for controlling the electric signal of the image based on the position on the image displayed by the mark; (2) imaging the document; a plurality of storage means for converting the electric signal into a digital signal and storing it; and a means for reading out the signal from the storage means and displaying an image on the screen. (1) It is easy to prepare the manuscript.

(2) Regardless of whether the document you have is transparent or opaque, it is possible to image it by simply centering the document.

(3) Image reception can be performed freely by scrolling the screen, wiping the screen, pointing arrows on the screen, etc., and the original can be set at will.

(4) The received screen can be electronically recorded and played back. You can also make a hard copy of this image. Furthermore, it can be projected onto a TV receiver and used for monitoring, searching, and the like.

(5) Combined with the falling prices of electronic components such as memory, lower prices can be achieved.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an image display device according to the present invention;
FIG. 2 is an overall block diagram of an image display device showing one embodiment of the present invention, FIG. 3 is a configuration diagram of an operating section, FIG. 4 is an explanatory diagram of a marker, and FIG. 5 is a second embodiment of the present invention. FIG. 6 is a block diagram of an image display device showing a third embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Imaging device, 2... Image receiving device, 3... Screen control device of the image receiving device, 4... Recording/reproducing device, 5...
Hard copy device, 6...Electronic control device, 7...R
F converter, 11... Video separation section, 12... RGB separation section, 13... DMA synchronization section, 14... ADC (A
/D converter), 15... cpU (central processing unit), 1
8... Control input section, 19... I10 boat, 23... Pattern generator (PG), 24...
・Video dedicated RAM (V-RAM), 25...Graph ink display control (GDC), 26・
・Dynamic memory access (DMA), 27...
・Many memory M, 28...Refresh memory M
A, 29...parallel/serial converter, 30...
DAC (D/A converter).

Claims (4)

[Claims] (1) (a) means for capturing an image of a document and converting it into an electrical signal; (b) means for displaying the electrical signal as an image on a display screen; and (c) means for generating a mark on the screen. (d) means for inputting a position on the image using the mark; (e) means for superimposing the electrical signal of the mark on the electrical signal of the document; (f) means for inputting the position on the image displayed by the mark; 1. An image display device comprising: means for controlling an electrical signal of an image based on the position of the image display device. (2) (a) means for capturing an image of a document and converting it into an electrical signal; (b) a plurality of storage means for converting the electrical signal into a digital signal and storing it; and (c) storing the signal in the storage means. An image display device characterized by comprising means for reading and displaying an image on the screen. (3) The means for controlling the electric signal of the image is a pointer;
The image display device according to claim 1 or 2, characterized in that the image display device performs wiping, scrolling, or coloring. (4) The image display device according to claim 1 or 2, further comprising means for hard copying the image.