JPH0119150B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scroll control device, and particularly to a scroll control device.
This invention relates to a scroll control device for displays such as CRTs.

Generally, displays on display devices such as CRTs are equipped with a so-called scrolling function, and by making use of this function, tasks such as information retrieval and editing processing can be performed efficiently.

In conventional scroll control systems, a dedicated scroll key (hereinafter referred to as a "scroll dedicated key") is typically provided on a predetermined keyboard. When the operator operates this scroll-dedicated key, a scroll operation is performed on the screen of a CRT or the like. Here, the line at the top of the CRT display is the first line,
If we explain the bottom line as the nth line, when the scroll key is operated once, the first line disappears from the CRT screen and the entire display moves upward one line at a time. The (n+1)th line will now be displayed at the bottom where the nth line was displayed. Next, when the operator performs a continuous scroll operation, the operator continues to press the scroll key for a certain period of time. As a result, the one-time scrolling operation described above is performed continuously.

However, in such conventional technology, when performing a scroll operation for each row or column, a dedicated scroll key must be operated each time, and furthermore, the operator's operation of the dedicated scroll key and the display There is no correspondence between scrolling up and down or left and right on the screen, leading to erroneous operation of scrolling keys, and since the scrolling speed is per line or column, work efficiency decreases and speed is reduced. The drawback was that it was not possible to perform editing processing.

It is an object of the present invention to provide a scroll that improves the drawbacks of the above-mentioned prior art, improves operability, prevents erroneous operations by the operator, and improves the speed of scrolling operations to perform quick editing processing. The purpose is to provide a control device.

The present invention provides a scrolling key segment on a tablet, and by operating the key segment, switches between a character input mode and a scroll mode, and also moves an input pen that is in contact with the scrolling key segment. The object is to be achieved by performing a scrolling operation on the display device in correspondence with a value obtained by multiplying the amount of movement by an integer.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

FIG. 1 is a schematic perspective view showing a tablet input device with a scroll control device according to the present invention.
In the figure, a tablet input device 1 is composed of an input device main body 2, a CRT display device 3 installed at the rear of the input device main body 2, and legs 4, 4 that support the input device main body 2. .
On the upper surface of the input device main body 2, there is a tablet 5 as a character input section in which predetermined characters are arranged and displayed in each segment 7, 7, . . . pen 6
and a keyboard 70 for making program settings, etc.
and multiple keys 71 and 72, which will be described later. Of these, on the tablet 5 there is a scroll key segment (hereinafter referred to as a "scroll key segment") which is used to switch between normal character input and scrolling on the CRT display screen, as well as to perform scroll operations as described later. 5A (referred to as "key") is provided. On the other hand, the tablet input device 1 includes the input pen 6 described above.
When the tablet 5 is separated from the tablet 5, the scrolling operation is stopped, and a scroll mode canceling means is built in to simultaneously cancel the scroll mode for the entire area of the tablet surface.

Next, an example of the tablet 5 will be enlarged and a second
As shown in the figure. In this figure, the numbers shown at the top end represent the X coordinate of the key segment 7, and the numbers shown at the left end represent the Y coordinate of the key segment 7. When any key segment 7 is operated with the input pen 6, the coordinate information X, Y of the key segment 7 is output. For example, when the scroll key 5A is operated, the coordinate information X, Y is 4.
6, 37 will be output.

Further, an example of the multiple keys 71 and 72 is shown in an enlarged view in FIG. In this figure, first, the multiple key 71 consists of three keys 71A, 71B, and 71C, and by operating these keys, you can control the multiplier 13 of the scroll control device, which will be described later.
The value to be multiplied by an integer of C (see Figure 4) (hereinafter referred to as the "multiplier value")
) can now be selected. This multiplier value is set using the keys 71A and 71 as shown in the figure.
For example, when the operator operates the key 71B, "2" is selected as the multiplier value, and the multiplier 13C is displayed on the multiplier 13C.
will output the value obtained by multiplying the input by "2". The same applies to the multiple key 72, 3
It consists of three keys 72A, 72B, and 72C.

Next, FIG. 4 shows an example of the configuration of a scroll control device according to the present invention. In this figure, the tablet 5, keyboard 70, multiple keys 71, 72
The tablet unit 11, which has a necessary control unit together with the input pen 6, is connected to a detection unit 12 that detects the amount of movement of the input pen 6, and receives the coordinate information X, Y, the coordinate information 46 of the scroll key 5A, and the input pen 6.
37 (see Fig. 2), a tablet strobe signal (hereinafter referred to as "T _STB signal") S _T output in response to the pen touch operation of the input pen 6, and the input pen 6
A pen switch signal _S5 emitted from a pen switch which is built into the pen switch and which is turned on and off by touch operation of the pen is inputted.

Next, the scroll information emitted from the detection section 12 is input to the counter section 13 as a scroll control section, so that the values in up-down counters (hereinafter referred to as "U/D counters") 13A and 13B are corrected. It's getting old. In detail,
The output P ₁ of the detection section 12 is input to the down terminal U ₁ of the U/D counter 13A, so that the value of the output C ₁ decreases.
For example, if one pulse is input to the down terminal _D1 while the output _C1 is "51", the output _C1 will regress from "51" to "50". On the other hand, the up terminal
The output P ₂ of the detection unit 12 is input to U ₁ , and the value of the output C ₁ is thereby incremented. For example, when one pulse is input to the up terminal _U1 while the output _C1 is at "39", the output _C1 advances from "39" to "40". U/D with down terminal D ₂ , up terminal U ₂ and output C ₂
The same applies to the counter 13B. moreover,
In this embodiment, these U/D counters 13
A and 13B are provided with reset terminals R ₁ and R ₂ , respectively, and are connected to the tablet section 11. A pulse is applied to the reset terminals R ₁ and R ₂ by operating a reset key 70A (see FIG. 1), and the values of the outputs C ₁ and C ₂ are reset.

Furthermore, the outputs C ₁ and C ₂ of the U/D counters 13A and 13B are outputted to multipliers 13C and 13D.
The inputs E ₁ and E _{2 are connected so that the inputs are E 1 and E 2} . These multipliers 13C and 13D are input
The values of E ₁ and E ₂ are multiplied by the multiplier values as inputs M ₁ and M ₂ , respectively, to obtain an integer multiple, and these are respectively output.
It has the function of F ₁ and F ₂ . For example, if the value of input E ₁ of multiplier 13C is "5", the input
If the value of M ₁ is "2", the output F ₁ is "10"
becomes.

Next, the outputs F ₁ and F ₂ of the multipliers 13C and 13D are connected to the CRT display device 3, respectively. To explain in detail, the CRT display device 3 is a so-called cathode ray tube (hereinafter referred to as "CRT").
) 31, a memory section 32 that stores the contents displayed thereby, and a CRT control section 33 that drives and controls these CRTs 31 and memory section 32. Among these, CRT control section 3
3 is the CRT3 among the memory contents of the memory unit 32.
In order to specify the content to be displayed in 1, a counter is built in, and the output x of the counter that specifies the "column" and the output y of the counter that specifies the "row" are respectively input to the memory section 32. It is becoming more and more like this.

Next, an example of the contents stored in the memory section 32 is shown in FIG. In this figure, the numbers displayed at the top end represent the coordinate x in the column direction, and the numbers displayed at the left end represent the coordinate y in the row direction. For example, the coordinates x, y are 12, 14,
Information about "i" is stored. Of these stored information, information specified by the outputs x and y of the CRT control section 33 is displayed on the CRT 31. If the normal scrolling operation is not performed or if the reset key 70A is operated,
Depending on the number of rows and columns that CRT31 can display,
The outputs x and y of the CRT control section are output. Here, assuming that the CRT 31 is capable of displaying 4 rows and 5 columns, the memory contents within the dashed line frame 32A in FIG. 5 are as shown in FIG. 8E,
It will be displayed on the CRT31. In detail,
When the output y of the CRT control section is "1", the output x is "1" → "2" → "3" → "4" → "5"
The information on the "Patent Cooperation Article" stored at the coordinates (1, 1) to (1, 5) in the memory unit 32 is read out and displayed on the CRT 31. After this operation is completed, the output y becomes "2", and during this time the output x changes from "1" to "2" →...→
It changes to “5” and the information on “that article” changes to CRT3.
1 is displayed. Thereafter, in the same manner, information stored at the coordinates x, y corresponding to the outputs x, y is read out and displayed on the CRT 31.
That is, the outputs x and y are not configured to constantly output fixed values, but to count a fixed value during a fixed period of time and repeat this process. In the above example, the output x repeats the count from "1 to 5", and the output y repeats the count from "1 to 4".

Between the CRT control section 33 and the memory section 32, adders 34 and 35 are inserted as scroll control sections, respectively, as shown in _FIG . _F2
are added to the outputs x and y, respectively. In detail, for example, multiplier 1
Assuming that the value of 3C's output F ₁ is "3",
This value is added to the output x of the CRT control unit 33 and output. In the above example, the output x
"1→5" is sequentially repeated, but "3" is added thereto, and "4→8" is sequentially repeatedly output from the adding section 34 and input into the memory section 32. The same applies to the output y.

Next, an example of the configuration of the detection section 12 is shown in FIG. In this figure, the coordinate information X, Y output from the tablet unit 11 is connected as signals S ₁ , S ₂ to inputs A ₀ , B ₀ of the latch circuit 41, and the coordinate information The data latch operation is performed at the falling edge of the pulse, and the latched coordinate information X and Y are configured to become outputs C ₀ and D ₀ , respectively. Of these outputs C ₀ and D ₀ , the output C ₀ is connected to the input B ₁ of the comparator 42 and the input A ₃ of the comparator 44,
The other output D ₀ is connected to be the input B ₂ of the comparator 43 and the input A ₃ of the comparator 44 . Next, the comparator 42 is connected so that X out of the coordinate information X and Y becomes input A ₁ , and the comparator ₄₃ is connected so that Y out of the coordinate information connected so that On the other hand, the comparator 44 receives position information X, Y of the scroll key 5A as a signal.
S ₃ and S ₄ are connected to input B ₃ .

Next, the signals S ₁ and S ₂ as the coordinate information X and Y
is input to the LSB change detection section 45. The output _C3 of the comparator 44 is an R-S flip-flop (hereinafter referred to as "flip-flop").
The output Q is the input S of the set terminal 46, and the output Q is the output of the LSB change detection section 45.
It is input to an AND circuit 47. The input _R0 of the reset terminal of the flip-flop 46 is connected to receive the pen switch signal _S5 mentioned above, and is reset at the fall timing of this signal.

Next, the output of the AND circuit 47 is input to AND circuits 48, 49, 50, 51 and an OR circuit ₅₂ .
The signal S _T is now input. On the other hand, the AND circuits 48 and 49 include the comparator 4.
The outputs C ₁ and D ₁ of the comparator 43 are input to the AND circuits 50 and 51.
C ₂ and D ₂ are now input. Also
Outputs P ₁ of AND circuits 48, 49, 50, 51,
As mentioned above, P ₂ , P ₃ , and P ₄ are connected to become the inputs D ₁ , U ₁ , D ₂ , and U ₂ of the U/D counters 13A and 13B, respectively (see Figure 4). .

Next, the basic operations of each of the above components will be explained. First, the latch circuit 41 latches the inputs A ₀ and B ₀ at the falling timing of the pulse output from the OR circuit 52, and outputs C ₀ and D ₀ . The value of this output remains until the next latching operation.
It is designed to be retained as is. Next, the comparators 42 and 43 input the inputs A ₁ , B ₁ and A ₂ ,
Compare the values of B ₂ , and if A ₁ < B ₁ and A ₂ < B ₂ , then
Outputs C ₁ and C ₂ become “H” level, and conversely A ₁ > B ₁ ,
In the case of A ₂ >B ₂ , the outputs D ₁ and D ₂ are at the "H" level, and in other cases, the outputs are at the "L" level. Further, the comparator 44 has inputs A ₃ ,
_B3 is compared, and if they match, the output _C3 is configured to go high. In other words,
Only when the outputs C ₀ and D ₀ of the latch circuit 41 match the coordinate information 46 and 37 of the scroll key 5A (see FIG. 2), the output C ₃ becomes "H" level.
Furthermore, the LSB change detection unit 45 has a function of outputting a pulse when the lowest digit (hereinafter referred to as "LSB") of either of the signals S ₁ and S ₂ displayed in binary has changed. have. Therefore, when the input pen 6 (see Fig. 1) is slid onto the tablet 5 (see Fig. 2) while touching it, the LSB of one of the coordinate information X and Y will definitely change. Therefore, a pulse will be output.

Next, the operation of the detection section 12 shown in FIG. 6 will be explained with reference to the diagram in FIG. 7. Figure 7 shows
In FIG. 2, an example is shown in which the scroll key 5A is touched with the input pen 6 and the input pen 6 is moved as indicated by arrow P in the figure to perform a scroll operation. Note that in this figure, the shaded area indicates that the state is uncertain.

First, at time _T1 , when the operator touches the scroll key 5A with the input pen 6, the switch in the input pen 6 turns "OFF".
The coordinate information 46 of the scroll key 5A is transmitted from the tablet unit 11 (see FIG. 4).
37 (see FIG. 2) is output. Here, T ₁
Let X 0 , Y ₀ be the coordinate information X, Y of the key segment previously operated by the operator, then compare this _{X 0 ,} Y ₀ with the coordinate information 46, 37 of the scroll key.
If the LSB is changing, a pulse is output from the LSB change detection section 45 as shown in FIG. Furthermore, since the aforementioned X ₀ and Y ₀ are latched in the latch circuit 41, and the outputs C ₀ and D ₀ are X ₀ and Y ₀ , the input B ₁ of the comparator 42 has X ₀ ,
Y ₀ is input to the input B ₂ of the comparator 43, respectively. In addition, the input of the comparator 42
A ₁ contains the coordinate information 46 of the scroll key 5A,
Out of 37, "46" is input, and "37" is input to input _A2 of the comparator 43. Assuming that 46<X ₀ and ₃₇ <Y ₀ , as _shown in FIG _{. 2} is the "L" level. Similarly,
The output _C3 of the comparator 44 is at the "L" level because the coordinate information _X0 , _Y0 as the input _A3 does not match the coordinate information 46, 37 of the scroll key _5A as the input B3. Therefore, the output Q of the flip-flop 46 also goes to the "L" level, and the output of the AND circuit 47 also goes to the "L" level.
Therefore, the outputs of AND circuits 48 to 51 are also "L".
level. Next, at time _T2 , when the T _STB signal is output from the tablet section 11, the latch operation of the latch circuit 41 is performed at the falling timing _T3 of this pulse. In detail,
At time T ₃ , the outputs C ₀ and D ₀ of the latch circuit 41
The coordinate information 46, 37 of the scroll key 5A is obtained from the above-mentioned X ₀ and Y ₀ . Therefore, the values of the inputs A ₃ and B ₃ of the comparator 44 match, and the output C ₃ is
It becomes "H" level. As a result, the output Q of the flip-flop 46 also goes to the "H" level. This operation switches from normal character input mode to scroll mode. On the other hand, the inputs A ₁ , B ₁ and A ₂ , B ₂ of the comparators 42 and 43 are
Since they match, the outputs C ₁ , D ₁ and
C ₂ and D ₂ are each at "L" level. Therefore,
In this state, the outputs of the AND circuits 48 to 51 remain at the "L" level.

Next, at time _T4 , if the input pen 6 moves to the area of the key segment 7 of the coordinate information 46, 36 as shown in FIG. 2, the coordinate information from the tablet unit 11 (see FIG. 4) X, Y are 4
It changes from 6,37 to 46,36. The above movement of the input pen 6 is performed while it is in contact with the input pen 6, so there is no change in the switch signal _S5 .
T _STB signal _ST is also not output. Next, the LSB change detection unit 45 detects that Y of the coordinate information X and Y is 37 → 36.
It detects that the signal has changed and outputs a pulse. Moreover, the output C ₃ of the comparator 44 is the input A ₃ , B ₃
Since they no longer match, the level changes from "H" to "L". However, there is no change in the output of the flip-flop 46, which remains at the "H" level. Therefore, the AND circuit 47
While the pulse of the change detection section 45 is being input, the output is also at the "H" level. In other words, while the output Q of the flip-flop 46 is at the "H" level, the pulse output of the LSB change detection section 45 is output as is.

On the other hand, since there is no change in the values of the inputs A ₁ and B ₁ of the comparator 42, the outputs C ₁ and D ₁ are both
It remains at "L" level. To elaborate, input B ₁
The coordinate information 46, 37 of the scroll key 5A is
Of these, "46" is input in the same way as before time T ₄ , and "46" of the coordinate information 46, 36 of key segment 7 touched at time T ₄ is input to input A ₁ . There is. Therefore, since the inputs A ₁ and B ₁ match, the outputs C ₁ and D ₁ remain at the "L" level. Next, "37" among the coordinate information 46 and 37 of the scroll key 5A is input to the input B ₂ of the comparator 43, and the other input A ₂ is
Of the coordinate information 46, 36 of the key segment 7 touched at time _T4 , "36" is input. Therefore, since A ₂ <B ₂ , the output C ₂ becomes “H” level. In this state, the AND circuit 47
The output of the OR circuit 52 falls and is maintained until the latch circuit 41 performs a latch operation, and this operation causes the output of the comparator 43 to fall.
_C2 becomes "L" level. Therefore, due to the above operation, only the output of the AND circuit 50 is at the "H" level for a certain period of time, and the output of the other AND circuits 48, 49,
The output of 51 remains at the "L" level (see FIG. 7). That is, when the input pen 6 (see FIG. 2) moves in the direction in which Y among the coordinate information X and Y from the tablet section 11 decreases,
One pulse is sent to the AND circuit 50 for each movement.
It will be output from. Conversely, when moving in the direction of increasing Y, the output of the comparator 43
Since D ₂ is at the "H" level, one pulse is output from the AND circuit 51 for each movement, similarly to the above.

Next, at time _T5 , if the operator moves the input pen 6 to the key segment 7 of the coordinate information 45, 36, the LSB changes for X as described above, so the LSB change detection unit 45
Outputs pulses. Since the output Q of the flip-flop 46 is at the "H" level, the pulse becomes the output of the AND circuit 47 as it is. On the other hand, of the inputs A ₁ and B ₁ of the comparator 42, the input B ₁ has the time
"46" out of the coordinate information 46, 36 at time T ₄ is input, and "45" out of the coordinate information 45, 36 at time T ₅ is input into input A _1. Since 45 < 46, , output _C1 is "H"
level. As mentioned above, this condition
This is maintained until the output of the AND circuit 47, that is, the output of the OR circuit 52 falls and the latch operation of the latch circuit 41 is performed. Through the above operations,
Only the output of the AND circuit 48 remains at the "H" level for a certain period of time, and the outputs of the other AND circuits 49, 50, and 51 remain at the "L" level (see FIG. 7). That is, the movement of the input pen 6 (see Figure 2)
The coordinate information X, Y from the tablet unit 11 is
When moving in the direction in which X decreases, one pulse is output from the AND circuit 48 for each movement. On the other hand, when moving in the direction in _which becomes.

To summarize the above operation of the detection unit 12, the operator operates the input pen 6 and the scroll key 5
When you touch A with a pen, it has a function that detects this and outputs a pulse according to the subsequent movement of the input pen 6. When X decreases among the coordinate information X and Y, output P ₁ every time X decreases by one. Outputs a pulse as , and when X increases, outputs every time
Outputs a pulse as P ₂ , when Y decreases, outputs a pulse as P ₃ every time it decreases by one, and when Y increases, outputs a pulse every time it increases by one.
It is designed to output pulses as _P4 .
In other words, the outputs P ₁ to P ₄ make it possible to obtain information regarding the scrolling operation requested by the operator.

Finally, the overall operation of this embodiment will be explained based on FIGS. 1 to 8. Here, it is assumed that the stored contents of the memory unit 32 of the CRT display device 3 are the same as those shown in FIG.
Assume that the portion displayed in is the solid line frame 32B in FIG. Furthermore, it is assumed that the scroll operation is as shown by the arrow P in FIG.
72 keys 71B and 72C are operated to input the multiplier values of multipliers 13C and 13D.
It is assumed that "2" and "3" are selected as M ₁ and M ₂ , respectively.

8A to 8D show the display of the CRT 31 over time during the operation described below.
In this figure, A indicates the initial display state, that is, the state in which the solid line frame 32B of FIG. 5 is displayed. In this state, the U/D counter 13
The outputs C ₁ and C ₂ of A and 13B are “5” and “4” respectively
and multipliers 13C, 13D
"10" and "12" are the outputs F ₁ and F ₂ of the adder 34,
35 to the outputs x and y of the CRT control section 33 (see time _T1 in FIG. 7).

First, as described above, at time _T1 , the operator touches the scroll key 5A (see FIG. 2) with the input pen 6, and at time _T4 , the input pen touches the area of the key segment 7 of the coordinate information 46, 36. 6 moves, a pulse is output as the output P ₃ of the detection unit 12. This pulse becomes the input _D2 of the U/D counter 13B. Therefore, the output _C2 of the U/D counter 13B is "4".
to "3" (see Figure 7). This value is multiplied by 3 by multiplier 13D,
This will be added to y of the outputs x and y of the CRT control unit 33. That is, "9" is added to the value of y, which changes from "1 to 4", resulting in "10 to 13". On the other hand, since the value of the output _C1 of the U/D counter 13A does not change, the output of the adder 34 does not change at all. That is, among the outputs x and y of the CRT control unit 33, the value of x, which changes from "1 to 5", is added "10" and remains as "11 to 15". By the above operation, the coordinate x in the memory unit 32 is set to “11
→15'' and the contents stored in the coordinate y as ``10→13'' are displayed on the CRT 31 as shown in FIG. 8B. In other words, the display on the CRT 31 has been scrolled three lines downward.

Next, at time _T5 , if the input pen 6 being operated by the operator moves to the area of the coordinate information 45, 36, a pulse is output as the output _P1 of the detection unit 12. This pulse becomes the input _D1 of the U/D counter 13A. Therefore, the output _C1 of the U/D counter 13A falls back from "5" to "4" (see FIG. 7). This value is multiplied by 2 by the multiplier 13C and then by the adder 34.
The outputs x and y of the CRT control unit 33 are added to x. That is, "8" is added to the value of x, which changes from "1 to 5", resulting in "9 to 13". On the other hand, since the value of the output _C2 of the U/D counter 13B does not change, the output of the adder 35 does not change. That is, among the outputs x and y of the CRT control unit 33, the value of y, which changes from "1 to 4", is added "9" and remains at "10 to 13". Through the above operations, the coordinate x in the memory unit 32 is set to “9→
13'' and the contents stored in the coordinate y as ``10→13'' are displayed on the CRT 31 as shown in FIG. 8C. In other words, the display on the CRT 31 has been scrolled two columns to the right.

Next, at time T ₆ , if the input pen 6 reaches the area of coordinate information 45, 35, in the same way as the case of time T ₄ described above, the coordinate x is set as the solid line frame 32C in the memory section 32. The contents stored in "9→13" and "7→10" as the coordinate y are displayed on the CRT 31 as shown in FIG. 8D.

To summarize the above operations, as the area of the key segment 7 changes due to the operation of the input pen 6 on the tablet 5 by the operator, the CRT 3 of the contents stored in the memory section 32 changes.
The area of contents displayed on the CRT 31 will change sequentially, and the display on the CRT 31 will be scrolled.

Note that although the above embodiment shows a case where display is performed in 4 rows and 5 columns, the present invention is not necessarily limited to this. Further, although the above embodiment shows a case where a CRT display device is used as a device for performing this type of display, the present invention is not limited to this in any way; for example, an LED method,
It may be a display device such as a plasma type display device. Furthermore, in the above embodiment, when displaying in the column direction, the display is performed one character at a time, but this is for the purpose of explanation, and in reality, for example, the display is performed one scanning line at a time. One character is completed by a plurality of scanning lines (for example, five scanning lines), and information for each scanning line is stored in the memory section 32. Even in such a case, if a plurality of scanning lines are treated as one unit, the scroll operation can be performed in the same manner as described above. Further, in the embodiment described above, the case where scrolling is possible in any of the left, right, top, and bottom directions is shown, but scrolling may be performed only in any direction as necessary.

Further, the U/D counters 13A and 13B are so-called ring counters, and are configured to, for example, count up to a certain amount and then return to zero. Further, in the above embodiment, the operator can arbitrarily select the multiplier value using the multiple keys 71 and 72, but the multiplier value may be set in advance to a predetermined value if necessary.
Further, the value of the multiplier value may be arbitrarily set as necessary, and the multiplier values of the multipliers 13C and 13D may be set to be the same. Further, in the above embodiment, the reset key 70A
Although the case where the CRT display is returned to the home position has been illustrated, the present invention is not necessarily limited to this case. For example, when the signal detection of the input pen 6 is interrupted (when the input pen 6 is returned to the tablet 5) ), the above-mentioned
Naturally, the present invention also applies to a tablet input device equipped with a scroll mode cancellation means for canceling the scroll mode on the tablet surface while maintaining the current display on the CRT display.

As described above, according to the present invention, since the scroll operation is performed on the tablet surface, the operator can perform the scroll operation without operating the keyboard while holding the input pen, and the operator can perform the scroll operation without operating the keyboard. Since the scrolling operation is performed according to the amount of movement of the pen, it is possible to freely perform the required amount of scrolling in either the left or right direction with a single operation. Since the scrolling operation is performed based on the input pen, it is possible to prevent erroneous operations by the operator.Furthermore, since the movement amount of the input pen is multiplied by an integer and the scrolling operation is performed in accordance with this, the speed of the scrolling operation can be increased. This has the excellent effect of improving operability and enabling quick editing processing.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing a tablet input device having a scroll control device according to the present invention;
FIG. 3 is an explanatory diagram showing an example of a tablet, FIG. 3 is an explanatory diagram showing an example of a multiple key, FIG. 4 is a block diagram showing an example of the configuration of a scroll control device according to the present invention, and FIG. 5 is a CRT display device. 6 is a block diagram showing an example of the configuration of the detection section of the scroll control device, and FIG. 7 shows the operation of each part in FIGS. 4 and 6. Diagrams 8A to 8E showing an example of the state are as follows:
FIG. 2 is an explanatory diagram showing an example of a display on a CRT. 3...CRT display device as a display device,
5...Tablet, 5A...Scroll key segment as a key segment for switching between character input mode and scroll mode, 6...Input pen, 11
. . . Tablet unit as a tablet, 12 . . . Detection unit, 13 . . . Counter unit as a scroll control unit, 32 .

Claims (1)

[Claims] 1. A display device that scrolls the display by changing the read address of a memory that stores display contents, and a tablet that inputs characters,
A key segment for switching between a character input mode and a scroll mode is provided on the tablet, and a detection unit that detects movement of an input pen in contact with the tablet on the tablet, and a detection unit that detects the input detected by the key segment. A scroll control device comprising: a scroll control section that multiplies the amount of pen movement by an integer and changes the read address in accordance with this value.