JPS62235634A - Printing device for optional area of display screen - Google Patents

Abstract

PURPOSE:To print only a necessary part of an optional area by providing a data limiting means for limiting a data which is sent out to a printing means, based on an area data which has designated a printing area. CONSTITUTION:A computer having a display device (CRT) 1 is provided with a RAM 2, a CPU 3, a keyboard 4 of an input part, a clock oscillator 6, a timing control circuit 7, a CRT control circuit 9, a display data storage part 10, etc., displays a prescribed graphic which has been stored in this storage part 10, on the CRT 1, and also, executes a printing output by a printer 12. On this computer, an instructing means 14 for instructing an optional coordinate position on a display screen of the CRT 1 is provided. In this state, by designating an area to be printed, by this instructing means 14, a data of this area is stored. Subsequently, a display data is limited by a data for showing this area and inputted to the printer 12. As a result, only the display contents of the designated area are printed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing device for an arbitrary area of a display screen for printing desired display contents on a display device such as a computer device It.

[Conventional technology]

The computer device has a function of printing the content displayed on the display screen of the display device, which is the output cylinder, using a printer. This allows the displayed contents to be recorded on paper as necessary, which is very effective in practice.

Reference number 1 for this type of technology is %F Kaisho 51
-68730, JP-A-53-65628, JP-A-5
No. 0-61944.

[Problem that the invention seeks to solve]

In conventional printers that allow content displayed on a display screen to be printed using a printer, the object of printing always concerns the entire display screen. Therefore, for example, if you input υDaiso data using an image scanner, etc., display it on the display screen, and then want to print a portion of it, or after editing the clothing content, you can print a specific area of this data. There was a problem in that it could not be used in cases such as printing out.

An object of the present invention is to print a display screen using an rc,
To provide a printing device for an arbitrary area of a display screen which can easily specify an arbitrary area of the display screen and print only a necessary part.

[Means for solving problems]

In order to achieve the above object, the present invention includes screen area storage means for specifying a print area in correspondence with the display screen of the display means, and data to be sent to the print means based on the specified area data. It is characterized by providing data restriction means.

That is, the present invention provides a display data storage means for storing display data, a display means for sequentially reading out and displaying the stored contents of the display data storage board on a display screen, and a display means for specifying an arbitrary display $μ area on the display screen. screen area storage means for storing the coordinates indicating the area specified by the screen area storage means; a bladder output table for reading out the display data from the display data storage section in 11v4; data restriction means for inputting display data from the reading means, restricting the display data to data corresponding to the area range based on the storage contents of the area coordinate storage unit, and outputting one; The present invention relates to an arbitrary area printing apparatus for a display screen, which includes a printing means for inputting output data and printing out display contents based on the data.

[Effect]

As mentioned above, if you specify the area to be printed using the screen area storage means in correspondence with the display screen,
Data indicating this area is stored in the one-sided area storage section.

The display data read out from the a display data storage section by the reading means is restricted by the data indicating the area by the data restriction means, and is input to the printing means. Therefore, among the contents displayed on the display screen, only the display contents of an arbitrary area specified by the screen area storage means are printed on the printing means.

〔Example〕

An embodiment of the present invention shown in the drawings will be described below. FIG. 2 is a block diagram showing the overall configuration of a computer having a display device. In this figure, l is a displayable cathode ray tube display device (hereinafter referred to as CRT), and 2 is a random access storage device (hereinafter referred to as RAM).
, 3 is a microprocessor (hereinafter referred to as
It is abbreviated as CPU. ), 4 is a keyboard constituting an input section, and 5 is a read-only storage section ft (hereinafter abbreviated as ROM). 6 is a clock oscillator that generates a clock signal serving as a reference for operation; 7 is a timing control circuit;
8 is a character font ROM, 9 is a CRT control circuit, ]0 is a display data storage section, 11 is a parallel-to-serial conversion circuit, and 14 is a screen area specifying device.

These operations are as follows. That is, when data is input from the keyboard 4, a program previously stored in the ROM 5 is executed, and the microprocessor 3 operates based on the commands of the program to correspond to the input character data in the character font ROM 8. The character font is transferred to the display data storage section 10.

Next, when another key is input from keyboard 4 again,
The character font corresponding to this input data is similarly transferred to the next position in the display data storage section 1o. In this manner, the microprocessor 3 transfers the character font to the display data storage unit 0 in response to the input and stores it therein. The above is executed by the microprocessor 3 operating the program stored in the ROM 5 or RAM 2.

At this time, the clock generation circuit 6 is activated by the microprocessor 3.
Input the basic pulse so that it operates regularly.

On the other hand, the basic clock pulse from the clock generation circuit 6 is also input to the c RT +lf control (b) path 9 . C
Upon receiving this basic pulse, the RT control circuit 9 uses the time f during which the microprocessor 3 is not accessing the display data storage 81510 to read out the display data from the display data storage section 10. This read data is parallel
[Serial conversion circuit] It is converted into a rectangular pulse train through 1t. This pulse train corresponds to the video signal V for 0RTI.
Enter as . Furthermore, the synchronizing signal S output from the CRT control circuit 9 is also input to the CRTI. CjRTl depends on these signals, and when the video signal V is at a high level voltage, the dot at the corresponding position of 0RTI is lit brightly. This scans the CjRTl screen from the top left to the right based on the synchronization signal S, and then scans the rows below it from left to right.
All the characters on the screen will be displayed. Therefore, CR
The T control circuit 9 stores the data in the display data storage section ]O in the CR
From the upper left of the TI screen to the right, the data of the next stage is sequentially output 9 and sent to the parallel-serial converter (b) path 11. Therefore, the CRT control circuit 9 generates a memory address for the display data storage section 11 so that the data can be taken out in the order described above. The above description has been about displaying characters, but when displaying figures, etc., data corresponding to a predetermined figure is stored in the display data storage section 10 by executing a predetermined program. The night is displayed.

12 is a printer, which is connected to 0PU3 via printer interface 12. As a result, the storage contents of the display data storage section 10 are
i1 is read out and printed on the printer 12 via the printer interface 13.

Reference numeral 14 denotes an indicating device for indicating an arbitrary coordinate position on the display screen of the CRTI. As shown in FIG. 3, these coordinates are such that the origin is the upper left corner of the 0RTI display screen Is, the horizontal coordinate is the X coordinate, and the vertical coordinate is the Y coordinate. A cursor C for specifying an arbitrary position on the display screen IB is moved based on instructions from the screen area specifying device Il [14].
0PU3 moves to an arbitrary coordinate point on the display screen Is. As this screen area designation device 1t14, various devices can be used. FIG. 3 is a plan view showing the basic configuration of a mechanical mouse, which is an example of a screen area specifying device. This figure will be explained below. The entire device is housed in a case 15, and a metal ball 16 is rotatably installed in the center. By moving this on a desk or the like, the ball 16 rotates. Rollers RX and RY made of rubber or the like are rotatably brought into contact with the ball 16 at positions corresponding to the predetermined X-axis direction and Y-axis force direction, respectively. The rotation axis of roller RX] 7 is connected to the decoder 18, and the rotation axis of roller RY] 9 is connected to the decoder 2
It is connected to 0. The decoders 18, 20 output pulses proportional to one revolution of the rotating shaft together with a signal indicating the direction of the rotating force. Therefore, when the case 5 is held in the hand and moved on a desk, the ball 16 rotates, and this rotation causes one or both of the rollers RX and RY to rotate. The rotation of these rollers RX and RY is based on the rotation axis 17.
19 activates decoder 18.20 and decoder 1
8.20 outputs a pulse proportional to the amount of rotation and a signal indicating the direction of rotation. Furthermore, the device is equipped with one or more switches 21, in the embodiment one switch 21 as command means. And decoder 18.2
The output of 0 and the output of switch □21 are signal lines 18t (+X), 18t (-ri, 20t (+Y),
20t(-Y) and 211 to lead out to the outside. And each signal line 3B1, 20t, 21
1 is input to the CPU 3 as an interrupt signal.

Figures 5, 6, 7, and 8 are coordinate input devices f1f7.
FIG. 9 is a flowchart showing the movement control means CMC of the cursor C on the display screen IS. The program corresponding to these flowcharts is R
The program is stored in advance in the AM2 or ROM5, and the CPU 3 executes predetermined processing based on the program. To execute the programs constituting each of these means, half of the RAM is
A special memory section TMP is installed at a predetermined location within the memory. FIG. 10 is a memory configuration diagram of the same. A special note t11 is that the temporary storage section CLX is a cursor position register that stores the X coordinate value of the cursor C on the screen IS.
The section CLY is a temporary storage section serving as a cursor position register that stores the X coordinate value of the cursor C on the screen ISJ:.

First, FIG. 5 will be explained. This is a means for responding to the pulse signal X (10F1 interrupt) indicating forward rotation from the decoder 18, and in step 5a,
The contents of the X counter register XC in the temporary storage TMP are set to 0.
PU3 reads the count contents] and stores the result in the X counter register XC. In the following step 5b, this updated X counter register
The result of this judgment is to judge whether or not the count content of C exceeds the value corresponding to the display of ORT 1 += the right end of surface 1S.
If the count contents of the X counter register XO exceeds this value, in step 5c, the count value corresponding to the right end of the display screen 】
Forcibly insert 1c4F. Then, the process returns to the process before the interrupt. Note that if the judgment condition of step 5b is not satisfied, the process returns to the process before the interrupt without executing step 5c.

Next, FIG. 6 will be explained. This is a means for responding to a pulse signal X(-) indicating a negative rotation from the decoder 8. In step 6a, the contents of the X counter register xC of the temporary storage TMP are set to 0PU.
3 is inserted, 1 is subtracted from this count, and the result is stored in the X counter register XC. Next step 6
In b, this updated X counter register xC
It is determined whether or not the counted contents exceed the value equal to the left edge of the ISO display screen of the ORT 3. As a result of this judgment, if
When the count content of counter register XC exceeds this value, in step 6C, X counter register
The count value Xm1ni (corresponding to the left end of the blood IS) is pledged on the oil side. 7, and returns to the processing before the interrupt.

Note that if the determination condition in step 6b is not satisfied, the process returns to the process before the interrupt without executing step 6C.

Next, FIG. 7 will be explained. This is a means for responding to the pulse signal Y (+E interrupt) from the decoder 20 indicating positive direction rotation, and in step 7a, the contents of the Y counter register yc of the temporary storage TMP are
U3 reads it, adds ] to this count, and stores the result in the Y counter register YC. In the following step 7b, this updated Y counter register Y
It is determined whether the count content of C exceeds the value corresponding to the lower end of the display screen 18 of (!RTI).As a result of this judgment, if the count content of Y counter register YC exceeds this value, step At 7CVc, the count value Y corresponding to the lower end of the day on the Y counter register YOK display screen is forcibly read.Then, the process returns to the one before the interrupt.

Note that if the determination condition of step 7b is not satisfied, the process returns to the process before the interrupt without executing step 7c.

Next, FIG. 8 will be explained. This is the number of steps required to respond to the pulse signal Y(-)O interrupt from the decoder 20 indicating negative direction rotation, and in step 8a,
The contents of the Y counter register YC in the temporary memory section TMP are set to 0.
PU3 moves in, subtracts 1 from this count, and stores the result in the Y counter register yc. In the subsequent step 8b, it is determined whether or not the updated count of the Y counter register YO exceeds a value corresponding to the upper end of the display screen ]S of O, RTl. As a result of this judgment,
If the counted contents of the Y counter register YC exceed this value, in step 8c, the counted value Ymi corresponding to the upper end of the Y counter register YOICfi display screen IB is
Forcibly write ni. Then, the process returns to the process before the interrupt. Note that if the determination condition in step 8b is not satisfied, the process returns to the process before the interrupt without executing step 8C.

As described above, by providing the processing means shown in FIGS. 5, 6, 7, and 8, as the mouse moves as shown in FIG. 4, X is calculated in proportion to the movement tK.

The count contents of Y counter registers xc and yc are updated.

FIG. 9 is a flowchart of a program constituting the movement control means OMC for the cursor C on the screen IS of the CRTI, and this figure will be explained below. First, in step 9a, the cursor position is initialized.

This means that the coordinates of the cursor C at the top position of the screen Is of the CRTI, that is, the upper limit of the left end, are set as rOJ. In short, this is a process of setting rOJ in the cursor position registers CLX and CLY set in the temporary storage part TMP. In the following step 9b, the X counter register XO and Y counter register YC are cleared. Soshi 1,
In step 9C, an interrupt enabled state is set.

As a result, the processes shown in FIGS. 5, 6, 7, and 8 described above and each process shown in FIG. 1, which will be described later, can be interrupted. In step 9d, the coordinates of the cursor O on the screen are calculated based on the contents of the X counter register XC and the Y counter register YO.

In other words, if one pulse from the encoder 18.20 is output for each pixel composing the screen Is, no special calculation is required, but if one pulse is output for each pixel making up the screen Is, one pixel If there are two parts, it is necessary to convert υ by calculation. In step 9e, the values corresponding to the X and Y coordinates on the screen calculated in step 9d are stored in the cursor position register OLX.

Write 0LYIC. In the following step 9f, a cursor C is displayed on the screen ]S based on the cursor position registers CLX and CLY. At the initial time, X counter register KO, Y counter register YC
are both "0", so the cursor C is displayed at the upper left corner of the screen ]S.

Thereafter, steps 9d, 9e, and 9f are repeatedly executed. During the execution period of this loop, the processing shown in FIG. 5, FIG. 6, FIG. 7, and FIG. 8 is performed, and the values of X counter register XO and Y counter register YO are updated,
, l-L, the display coordinate position of the cursor C changes accordingly.

FIG. 11 shows an example in which graphs and characters are displayed on the display screen IS of 0RT1. below,
In this figure, the locus S point F, ,P,.

An example of printing an area surrounded by P, , P, will be explained.

FIG. 1 is a flowchart showing arbitrary area printing processing which constitutes the essential part of the present invention. The program shown in the flowchart is also stored in RAM2 or ROM5 as described above.
A predetermined function is achieved by storing the program in the microprocessor 3 and executing the program by the microprocessor 3. First, in step 1a, a request for inputting an instruction for a print area on the display screen IS is issued. The details of this step 1a are shown in FIG. 12. As shown in FIG. 11, the print area is located at the coordinate point PleP! wP,,P
, but in this embodiment, as will be described later, this is achieved by specifying the coordinate points P, , P4. When executing the process shown in FIG. 12, four temporary storage units are set in the RAM 2 as shown in FIG. That is, VR8AX, VR
8AY is the coordinate point P, the X coordinate t, YJI mark, VR
EAX and VREAY are the X and Y coordinates of the coordinate Ap4.

Below, FIG. 2 will be explained. Step 12a, 1
2b and 12c are storage processing of the coordinate point P. That is, in step 12a, input of the coordinates of the starting point of the print area is requested. Based on this request, the mouse is used to move the cursor C to the coordinate point P, and the switch 21 placed on the mouse is pressed.

In step 12b, when it is detected that the switch 21 has been pressed, the process moves to step 12c. Step 12c
Now, write the cursor position register (!LX,
The contents of CLY are stored in storage units VR8AX and VR8A, respectively.
Store in Y. As a result, the coordinates of the coordinate point P are stored in the storage units VR8AX and VR8AYK. Similarly, step 12d.

12e and 12f are the storage processing of the coordinate point P, that is, step 12 (L stores the coordinates of the end point of the print area. Based on this request, use the mouse to move the cursor C to the coordinate point P1. , and press switch 21 placed on the mouse.In step 12e, switch 21 is pressed.
When it is detected that has been pressed, the process moves to step 12f. In step 12f, the contents of the cursor position registers OLX and CLY shown in FIG.
Store in REAX and VRKAY. From this point k, the coordinates of the seat rail point P are stored in the storage units VRF, AX, and VRBAY.

9 shown in FIG. 11, in this embodiment, 0RTI
1, use one with a dot display. And it is a pixel, that is, 640 dots horizontally and 40 dots vertically.
I am using one with 0 dots. In this case, the total number of dots is 256,000. One dot corresponds to one bit on memory. Display data storage section 10
Each address is assigned to the CRTI display screen IS as shown in FIG. That is, the 8 bits at the upper left corner of the screen 18 are the address θ, and the 8 bits to the right in the horizontal direction are r ] J vQ, and so on. Note that the addresses in this figure are shown in hexadecimal numbers. Therefore, the printing start position P1 of the printing area described above.
The print end position flilcPn is specified in units of dots. In other words, specifying any expansion with the mouse, as shown in FIG. The display data storage unit corresponding to the print start coordinate P,] The upper bits of the instruction bit in the 001 byte do not need to be busy during printing, and the print end coordinate P
The bits lower than the instruction bit in one byte of the display data storage unit 10 corresponding to No. 4 are also unnecessary.

Furthermore, the addresses on the columns to which they belong also have unnecessary bits, and when printing, it is necessary to mask the unnecessary bits. Step 1b is the step of creating this mask data. Figure 14(c) shows an example of mask data.
Data VR of the print start address of the display data storage unit 10
8A and the corresponding data Pc Yy mask data VR8M
D. Data VEBA of the print end address and mask data 'VREMD for the data are stored in a predetermined temporary storage section of the RAM 2 as shown in FIG. This masks unnecessary data outside the boundaries of the print area, so that nothing is printed when the printer 12 prints. In the following step 1c, step]
At a, print start coordinates VRBA and print end coordinates #VRI! are stored as shown in FIG. : Read A.

Step 1d is the execution of the start boundary data printing means 8APH which prints the column corresponding to the start address in the print area r (that is, the data of the address at the boundary of the print area, details of which are shown in FIG. 16). Step 1e is the execution of the intermediate data printing means MAPR which prints the data at the address in the middle of the printing area.The details are as shown in FIG. 17.Step 1f corresponds to the end address in the printing area. This is the execution of the end boundary data printing means EAPH which prints the data at the address at the boundary of the column, that is, the print area, and the details are shown in Figure @18.
By executing IAPR, data at each address in a designated area on the display screen IS is printed by the printer 12. Then, in step 1g, it is determined whether the printing process at the final address 1 of the specified area has been completed, and if it has not been completed, the process is moved to step 1d,
Step 1 (Repeat the process of 1, 18, if).

The details of the print process will be explained below with reference to FIGS. 16, 17, 18, and 19. In these explanations, VRA is a pointer that sequentially indicates addresses in the horizontal direction on the next screen]S.

BD is a pointer that sequentially specifies each address of the continuous buffer memory IJBM from address 1 to (1+7)1 shown in FIG. The printer 12 used in the example prints 8 dots in parallel. Therefore, in FIG. 11, the data of the print area on the six-display screen Is is 2.゛52, A2. F2. 14
2. 392. The images are printed in order from 112°232 to the right. At this time, the display screen] shown in Fig. 20 (a)
Assuming that an arrow like the one shown in is displayed, move this arrow sequentially from address 1 to address (1+7)'! If the printer 12 prints the screen IS, the printer 12 cannot print the image corresponding to the screen IS. Therefore, it is necessary to change the array as shown in Figure 20 (bl).

Therefore, a buffer memory indicated by FB is provided.

Change the arrangement of the data on the buffer memo 93M on the backup memory PB, and output the data at address (t+7)1 from address t to the printer one by one.
It is possible to print figures similar to those on the screen IS on the paper set in the . That is, in the case of this embodiment, conversion is executed at the data level of 8 bytes corresponding to the screen IS, and printing is performed. Note that these buffer memories, pointers, etc. are allocated to predetermined addresses in the RAM 2.

Hereinafter, FIGS. 16 to 19 will be explained along the flow of FIG. 1. 1. First, the start boundary data printing means 5APR shown in FIG. 16 prints the vertical boundary data of the print area start address, so in step 16a,
The mask data VR8MD of the column corresponding to the start address is read from a predetermined location on RAMZ. Then, in step 16b, the pointer VRA is initialized by clearing it to IIQjl and all data in the batza memory BD to "oo". Next, in step 16c, a print start address is set in the processing data address pointer l&address pointer of the print area on the display data storage s10). Then, in step 16d, a counter C0UNT that counts whether or not 8 bytes of data has been processed is set to lIO.
"Clear and assign pointer BDK address 1 that specifies the address of the reserved buffer memory BM to addresses 1 to (1+7). These pointers and counters are set at a predetermined location t in RAM 2. In step 16e, , the contents of the display data i bullet lO specified by the pointer V are read out, and in step 16f, an AND operation is performed with the mask data VSMD read out in step 16a.

At this point, extra data outside the boundary is cleared to '0'tz
At the time of printing, the image will no longer be printed. In step 16g, the print data created in step 16f is ORed with the @00'' data on the buffer memo 93M specified by the pointer BD, and stored in the buffer memo 93M. In step 16h, the next read address V is and increment the counter C0UNT by 1,
Pointer BD also increases by l. In step 161,
Current address V or print area end address 'VR
Determine whether or not the ICAO line has been exceeded. This is to prevent unnecessary data from being printed at the bottom of the screen print area. This is something that the printer 12 processes in 8-byte units, so the print area or another 8-byte unit is
(Valid if not cut. In step 161, it is determined that the line is not the print end address line and step 1
If the counter 0OUNT is 8 or less in 6j, the process goes to step 16θ and the above process is repeated. Step 16j
When the counter C0UNT reaches 8, or when the print end address line is reached, the print control means POT LK processing shown in step 16 is moved. This means PCTL will be described later. Print control means PCTL
After printing 8 bytes of data, proceed to step 16.
At e, set the horizontal address pointer VRA to Ill
” and sets the value of the print area start address vRsaK pointer V.
becomes the start address of 8-byte processing in the next stage.

Print processing for other than boundary addresses is executed by intermediate printing means MAPR. The intermediate printing means MAPH shown in FIG. 17 will be explained below. The means MAPR
Unlike the processing of the start boundary data printing means 5APH, there is no need to mask the data read from the distribution data storage slO, and the other processing is the same. In step 17j, the horizontal pointer VRA is incremented by 1, and in step 17kK7, the process of the hand gesture MAPR is continued at step 17kK7, which specifies the pointer VRA or the print end address column by 1. At step 171c, pointer VR
When A specifies the print end address column, the white means VR
The process of A ends.

Next, the end boundary data printing means KA shown in FIG.
Let's explain about PR. In the means MAPR, step 18h1 is the same process as the means 5APR and MAPR, so the explanation will be omitted.

In step 181, it is determined whether the pointer V exceeds the end address. If the end address has not been specified, the process proceeds to step 181, and the counter C! 017NT becomes 81
8) Repeat steps 18e-181.
When the print control means PC shown in step 18k
Transfer processing to TL.

Through the above processing, the contents of the display data storage unit 10 from the start address of the print area to the print end address 1 are limited to unnecessary data, and are made into a total of 17 "lint-safe data." An example of the print control hand beast PCTL described above will be explained using Fig. 19.The hand 1jP
CT L prints the contents of the buffer memory BM indicated by addresses 1 to (1+7) on the printer 12? li,
It is a conversion that is similar to that of a person. A specific example is shown in FIG. That is, Figures 16 to 18
By processing the print data shown in the figure, addresses 1 to (1+
7) is converted and stored in the buffer memory FB at addresses e to (ee7) as shown in FIG. 20(b). By converting in this way, the printer 12 prints sequentially starting from address t.
The paper can display figures similar to those on the screen IS. That is, in step 19a or the address t
Clear the contents of ~(z+7). Step 191
), a counter k is set to count whether or not 8 bytes from addresses 1 to (1+7) have been processed, and this is
IO” and set 1. Then, in step 6CV (in step 6CV), set 1 to the data of each address from address 1 to (1+7).
Perform @fill operation on I80'' in hexadecimal number and store it in the corresponding address t~(t+7).Next, step 6d
The power to memorize the number of shifts for each address is 9 tanta m.
and clear it "lIO". Next, by steps 6e, 6f, 6g, and 6hK, address t~(t
-4-7) is logically ORed to the address (10k) while increasing the j@th shift amount. These processes will be explained as follows using diagrams. That is, at the beginning, the counters are both O''.

By executing Step 6C, a@ of Section 20(a)
b@C@d@ee ft go h is the 20th
Figure (bl a', b', c', d', e', f', g'
.

h' place fklcOc&memory field. Step 6e, 6
Due to the relationship of g, these a', b', c', cL'.

``''''g' and h' are each shifted in the horizontal direction indicated by the arrow in Fig. 420 (bl).Furthermore, since they are all ORed to the address t in step 6f, they are shifted as shown in Fig. 20 (bl/ As shown in c, each data of bit D7 of addresses 1 to (to7) is stored at address t.
It will be stored in K. Further, in step 61, each data at addresses 1 to (t+7) is shifted to the left I/c 1 bit, and in step 6j, the counter k is incremented, and if this is not 8 or more, the processing from step 6C is further executed. By repeating the above processing over eight lines, the contents of FIG. 20(a) are converted as shown in FIG. 20(b). Then, in step 6t, the contents of addresses t to (t+7) are output to the first@next printer 12. Accordingly, the printer 12 prints a predetermined figure or the like on paper or the like.

By doing the above, it is possible to print any specific area on the display screen IS using the printer 12C.Furthermore, in the embodiment, it is possible to specify the area to be printed by specifying two points. Although the case has been explained above, it is easy to understand that it is possible to take an arbitrary shape of the specified area by combining a plurality of points.

Further, in the above embodiments, a mouse is used as the screen area storage means, but various coordinate specifying devices can also be used.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, when printing a display screen, an arbitrary area of the display screen can be easily specified, and only a necessary part can be printed. A printing device lc can be obtained.

[Brief explanation of drawings]

FIG. 1 is a 70-chart showing the main parts of an embodiment of the present invention, FIG. 2 is a block diagram showing the overall configuration of a computer device to which the present invention is applied, and FIG. 3 is for explaining the coordinates of the display screen. FIG. 4 is a plan view of a mouse showing an example of a screen area indicating means; FIGS. 5, 6, 7, and 8 are flowcharts showing an example of a mouse movement amount counting means;
Figure i9 is a flowchart showing an example of a cursor movement control means, Figure 10 is a memory configuration diagram showing the configuration of a special storage unit, Figure 11 is a diagram showing the correspondence between the display data storage unit and the display screen, and Figure 12 is a diagram showing the correspondence between the display data storage unit and the display screen. The figure shows the print area designation input process, Figure 3 is a memory configuration diagram showing the configuration of the coordinate storage section, Figure 14 is a diagram showing the configuration of each piece of data, and Figure 15 is the 14th 16, 17, and 18 are flowcharts showing examples of various means constituting the data restriction means, and FIG. 19 shows an example of the print control means. The flowchart shown in FIG. 20 is an explanatory diagram for explaining FIG. 19. 10: Display data storage section, C! RT: Means of clothing, 14:
Screen area storage means, VR8A, VRFjA: Screen area storage section, 16e, 17d, 18e: Reading means, ld, le
, If: Data restriction means, 12 nibrint means agent Patent attorney Katsuo Ogawa X1゛
. 1st Mouth Figure 2 Figure 3 40 2θ /6 Figure 5 Figure 62 Figure 7 sg Figure 9th Country Shulo Country 740 15th Ward 76 Marks 17th Range 18 Leap 1st? 20 diagrams

Claims (1)

[Claims] a display data storage means for storing display data; a display means for sequentially reading and displaying the stored contents of the display data storage means on a display screen; and a screen area specifying means for specifying an arbitrary display area on the display screen; screen area storage means for storing coordinates indicating the area designated by the screen area designation means; reading means for sequentially reading out the display data from the display data storage section; inputting the display data from the reading means; data restriction means for restricting and outputting display data to data corresponding to the area range based on the storage contents of the area coordinate storage unit; and inputting output data from the data restriction means, 1. An arbitrary area printing device for a display screen, comprising a printing means for printing out display contents.