JPS5957336A - Picture display device - Google Patents

Abstract

PURPOSE:To releave the load of input by magnifying a picture and inputting a coordinate so as to attain highly accurate coordinate input, in a picture display device inputting the coordinate set on a display picture. CONSTITUTION:In inputting a coordinate, an operator touches a light pen 2 on a coordinate desired to be inputted on a display tube surface 1 while observing the picture displayed on the surface 1. Then, a magnified picture is formed on the surface 1 so that the range displayed with the surface 1 is limited in the vicinity of the part touched with the pen tip of the light pen 2 with the lever operation of a control box 3 for the coordinate input with high accuracy. Thus, highly accurate position designation on the magnified picture is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image display device that inputs a 1c coordinate value set on a display image.

[Technical background of the invention and its problems]

'In image processing that makes full use of electronic computers, there is a need to allow human will to be involved in the processing, and there are many image display devices equipped with features that can meet this demand. being developed.

However, there is no coordinate input method that can input the coordinates of a point arbitrarily set on the display image with high precision and is easy to operate. It is widely used because of its simple configuration, but the coordinate input accuracy is extremely low. On the other hand, the coordinate input method using a joystick is a method in which input is performed after all position markers are positioned at the desired point, and has the advantage of relatively high coordinate input accuracy, but it is difficult to perform position alignment. requires very delicate operations and is extremely troublesome.

Therefore, if the number of input points increases, this becomes a big problem.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide an image display device that can input seat values with high precision and that requires less labor for inputting.

[Summary of the invention]

The outline of the present invention for achieving all of the above objects is as follows: (2) A display device that inputs coordinates specified by the operation of a light ben, etc. A coordinate value register that stores all the coordinate values of The address from which the enlarged image can be read is -1: Arrangement 1 An address generation unit that sends out to the dormitory memory, and all enlarged images read out by the address signal from the image memory are sent out as appropriate. The display data editing section reads out from the image memory an image to be fully enlarged in the vicinity of the input coordinates according to the address signal output from the address generation section, and displays the enlarged display image. According to the present invention, it is possible to input the coordinates of any position of the image.According to the present invention, it is possible to input the coordinates after fully enlarging the image. Embodiments of the Invention The present invention will be described in detail below in accordance with embodiments shown in the accompanying drawings.

FIGS. 1 to 5 are for explaining one embodiment of the present invention, and in this embodiment, coordinates are input using a light ben.

First, the operating procedure for inputting coordinates will be explained with reference to FIG. 1, which is a city view of the display area, and FIG. 2, which is a perspective view of the control box. To input coordinates, the operator must first input the image displayed on display screen 1. While watching, press the light bear '2'c at the position of the coordinates you want to input on the tube surface 1. Next, in order to perform high-precision coordinates, an enlarged image is formed on the display screen 1 such that the range displayed by the display screen 1 is limited to the vicinity of the part where the pen tip of the light ben 2 is fully pressed; This makes it possible to perform highly accurate position specification on one enlarged image.

Enlargement of this image is performed by operating a lever on a control box 6 provided in a part of the image processing device. That is, the part labeled lever krUP'J (hereinafter simply r
When you turn it to the 0) side called UPJ, the display image of the part pressed against the pen tip car of Light Ben 2 will be enlarged, and the enlargement rate will continue to rise gradually while the lever is set to the rUPJ side. ing. When zooming in, set the range so that the position of the image at the pen tip position is the same before and after enlargement]
It will be done.

This expansion can be stopped by pressing Or IR in the center of the lever. The operator then moves the lever krUP to the J side to enlarge the displayed image, and when the desired enlargement rate is reached, returns the lever to the center, leaving the displayed image at the desired enlargement rate. Then, push the light pen 2 onto the display screen 1 and move the magnified display image (Z) to eye a, and move it to position 1rt.
Improve accuracy. The pen tip of the light pen 2 on this display image is pressed S)
” (input value) is displayed with t and i marks, and with these marks, Light Ben 2 detects the source from the displayed image, and the detection (, Yes - Confirmation 1 - Is it possible?

If you move the entire lever to the [DOIi'lV J, hereinafter simply referred to as "I) OIt'N J" side, the display range will be reduced and the displayed image will be reduced. Lever?r r INPIII”
J (!: k The indicated part (hereinafter simply r INl
It's called 'UT J. ) side, the light ben 2 inputs the designation formula 1 ko & ni mark (this t' and the coordinates of the position where the mark is displayed without 9) into the image processing device. It is best to repeat all of the above operations multiple times when inputting the coordinates of multiple points in sequence. Note that the lever should be moved to the part labeled "SHIFT" (hereinafter simply referred to as "SHIFT").

) side, the display range moves so that the position specified by the pen tip is located in the center of screen 1, and this function is useful when inputting lines, etc. 0 used when inputting
Note that when the lever is returned to the center, the displayed image can be saved.

Next, a display range calculation method for enlarging and moving the display image described above will be explained.

Image data H of the entire image: Stored in an image memory to be described later, the image data within the display range can be sequentially read out in parallel with the beam travel of the display system. The display range calculation method will be described below as four examples when the image enlargement ratio is 4 times the area ratio. First, the display range before enlargement is jp; As shown in Figure 3, T
A As shown in the figure, if the point kPo is at the upper left corner of the display image, the coordinates of the point po are (xA, yA), which is 0, the position where the pen tip of the Light Ben 2 is pressed, that is, the position of the pen tip. Let the point pr be the coordinate value k C'Cr −
'/r), and W3; , 1jjy represents the width in the horizontal direction and the width in the vertical direction of the display range. Then, the upper left corner point PO'(xA', a
:B') and the width wx' of the display range.

Wy' k "A'= ("A ten "r)/2
, yA'=(yA toyr)/2, Wx""ur
x/2, If, '= 11'! //2, the position of the pen tip position on the display tube surface 1 does not change at all between before and after enlarging.

On the other hand, when moving the display range, the width w, ', Wy' of the display range after movement is the same as the width before movement, and the upper left corner point of the display image Pa ('A'#yA')
f "A'=xr-w2/2.3'A7='/r
-Wy/2 FIG. 5 is a circuit block diagram showing the circuit configuration of an image processing apparatus that enables all of the operations described above. In the figure, reference numeral 4 denotes a timing signal generating section which generates horizontal signals, vertical signals, and a basic clock 51. A memory control section 5 generates various control signals for reading image data in response to the horizontal signal, vertical signal, and basic clock SR generated from the timing signal generation section 4. Reference numeral 6 denotes an address generation section which generates an address signal Ssk for reading image data in synchronization with the generation of the control signal S2 by the memory control section 5.
Occur. This address is generated in a register that stores the coordinates of the upper left corner of the display image and the horizontal and vertical widths of the display range. 7 is an image memory section and an 8-digit display data editing section, which functions to input image data 54 read out from the image memory 7 by adding an address signal S3 for reading image data and a control No. 46 Szk to the image memory 7. Reference numeral 09 is a timer which, when receiving the light ben operating signal I4 indicating that the light ben is in operation, generates all pulses at regular intervals. 10 is a coordinate value register for storing a signal Ssk indicating the address of the portion where the pen tip of Light Ben 2 is located;
Reference numeral 11 denotes an output section that latches the storage contents k of the coordinate value register 10 (') by a buffer register and outputs them as appropriate (this output section 02). An interrupt signal 03 indicating this is also generated.

The circuit operation of the image processing apparatus shown in FIG. 5 will be explained below.

In response to the horizontal signal, vertical signal, and basic clock S+ generated from the timing signal generator 4, the memory controller 5 generates various control signals S at the beginning of reading the aperture data. Then, the address generation section 6 tel: image data + tie address 53 is generated.These signals S2 and S3 are sent to the image memory capital 7, and as a result, the image memory section 7 outputs the display data editing section 8. Display data s4 car protrusion 11
On the other hand, the address generation section 6 performs the above-mentioned 1↑1' operation of the display range. The initial value of the address generator 6 is 1, and each time it is enlarged, the stored contents change to 2.4, 8, and so on.・・・
・2n,... is added, and when reducing, the memory contents become 2n, 2B 1. It has a built-in shift register that decreases the number of times the same address is generated in the horizontal direction and the same horizontal scan is repeated in the vertical direction as many times as the number of times of expansion or reduction. Further, the address generating section 6 generates an add for reading image data, and also refers to the output Ssk of the coordinate value register 10 to determine whether or not the output Ss corresponds to the mark position. That is, the coordinate value register 10 determines that the electron beam is aligned with the pen tip k of the light pen 2.
When the pulse Is which is output after m has passed is generated, the address S3 of the passing position 1t7 of the electron beam is taken as the pen tip position. Then, the address generation unit 6 checks the contents of the address Ss of the shift position tit by referring to the output Ssk of the coordinate value register 100, and judges whether it corresponds to the mark position or not, and the judgment result S-
The data is sent to the purple display data editing section 8.

Change the output data 01 to the data with the highest brightness only when the display data editing section 8 determines that it corresponds to the mark position.On the other hand, when the light ben operation signal I4 is generated, the timer 9
The operation starts [7. All pulses are generated at regular time intervals. Due to the action of AND gates 12 and 16,
It is sent to the address generator 6 only when the enlargement request signal I2 or the reduction request signal I3 is output, and the enlargement signal I1 instructs reduction.

Input instruction signal I@ generated when tilted to "INPUT" side
When this occurs, the output unit 11 latches all the contents of the coordinate value register 1o into the built-in buffer register, outputs all the loaded contents as appropriate (this output 11oi), and at the same time generates an interrupt indicating that the coordinate values have been input ( , No. 4 Os”
c occurs. Note that 11 is a signal for instructing all movement of the display range. Including all of this signal Il/, ~Iail? Generated from Itohen 2 and control box 6 (
No. i 0 Such an operation such as expanding the display range will not be started unless the light ben activating signal I4 is generated, in other words, unless the light ben 2 is pressed onto the display tube surface 1.

Furthermore, if the light benron activation signal I4 disappears, in other words, if the light ben 2 is moved away from the display tube surface 1, the display automatically returns to displaying the entire image.

In the above embodiment, when data is output in parallel from the image memory section 7 as a whole unit of multiple pixels, the display data editing section 8 similarly repeats the same image data, and during that time, data is output from the image memory section 7 in parallel. Data must not be accepted.

According to the present invention as described above, it is possible to input the coordinate sound after fully enlarging the displayed image in the vicinity of the part of the coordinates to be input, and furthermore, even if the display image is enlarged, the coordinate sound cannot be input without inputting the coordinates. Since the coordinates hardly move on the tube surface, it is possible to input coordinates with lI accuracy, and the labor required to input highly accurate coordinates can be reduced.

[Modified example]

In the present invention, the light bench 2 and the control box 6 may be integrated, and an operation button in place of the lever of the control box 5 may be provided in a part of the light bench 2.

Also, even when inputting coordinates using joystick #,
According to the present invention, there is no need for delicate operations to accurately align the position markers, and the burden on input is reduced.
In this case, the contents stored in the coordinate value register 10 can all be controlled by external signals, etc.
It is necessary to partially change the circuit configuration of the device shown in the figure.

[Brief explanation of the drawing]

Embodiment of the present invention k 1ISt, 'J'
Figure 1 is a 1F view of the μ water part of the device; Figure N2 is a diagram of the control box;
4 and 4 are display screen configuration diagrams for explaining how to set the display range, and FIG.
The block diagram is 0 2... Rai] Ben, 6... Address generation section,
7... Image memory, 8... Display data editing section, 10... Coordinate value register〇 Agent Patent attorney Noriyuki Chika (and 1 other person) Figure 1 Figure 2 Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] In an image display device that is fully equipped with the function of inputting all the coordinates specified by an operation such as a light ben, there is a coordinate value register that stores all the coordinate values of the coordinates specified by the operation that specifies the coordinate input, and an image that stores the entire image. a memory; an address generation unit that receives an image enlargement command signal and, in response, reads an enlarged image in the vicinity of the coordinates stored in the coordinate value register from the image memory; , the entire enlarged image read out by the address signal from the image memory, and a display data editing section which sends out the display data as appropriate, and the vicinity of the coordinates input by the address signal output from the address generation section. An image display device characterized in that an image to be fully enlarged is read out from an image memory and displayed, and coordinates of any position of the enlarged display image can be input.