JPH0331923A - Input/output device and input display system - Google Patents

Abstract

PURPOSE:To obtain a coordinates output in which the followability of a display and, further, a display quality to an input are improved even when a character and a graphic are inputted at high speed with a handwritten image by outputting only arbitrary several coordinates data out of detected coordinates. CONSTITUTION:When a user is inputting the graphic, etc., since the coordinates data outputted from an input/output device 1 to a host computer 2 are the coordinates at random, dots to be displayed are made at random, but a display with good followability is executable. Further, when the user completes the input, since all coordinates detected by an XY coordinates detecting circuit anew are outputted, spaces between the dots made at random can be displayed as though smoothing is gradually executed from a point where the input is started, and an contradictory feeling is not given to the user. Thus, even when the character and graphic are inputted at high speed by the handwritten image, the coordinates output, in which the followability of the display and, further, the display quality to the input are improved, can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention integrates a display device and a coordinate input device by overlapping them,
The present invention relates to an input/output device capable of displaying an arbitrary pattern at the same coordinates as input coordinates on an input plane, and a display system having this input/output device.

[Conventional technique VFI] Conventionally, CP was used as a system for inputting and displaying figures, etc.
U, coordinate input device, display device, etc. are connected,
There is an information processing device that creates and edits graphics using a coordinate input device (see Japanese Patent Laid-Open No. 61-5330).

Further, as an example of a coordinate input device used in such a system, there is a coordinate input device that uses a coordinate indicating tool or the like to indicate a position on the screen and input the coordinates of the position (Japanese Patent Application Laid-open No. (Refer to Publication No. 63-26722)
.

Furthermore, recently, a coordinate input device and a flat display such as a liquid crystal display have been stacked and integrated to display the coordinates at the same position as the input coordinates, making it possible to input figures as if writing on paper. Various companies have commercialized input/output devices for this purpose.

Conventional technology related to such input/output devices will be explained with reference to FIGS. 3 and 4.

FIG. 3 shows an outline of the external configuration of an input/output system using the prior art, and FIG. 4 is a block diagram showing its internal functions.

In FIG. 3, 1 is an input/output device, and 2 is a host computer to which the input/output device 1 is connected.

The input/output device 1 includes a coordinate indicating tool 31 for indicating coordinates to be input, and a coordinate input device 3. The display device 1o is its main component. In this way, the input/output device 1 has the coordinate input device 3 and the display device 10 arranged one on top of the other, and is configured to be able to display at the same coordinates as on the input plane pointed by the seat S indicator 31. .

Further, as shown in FIG. 4, the input/output device 1 includes a coordinate input device 3, an XYYYY standard black detection circuit serial interface circuit 5, and a display device 10.

On the other hand, the host computer 2 has a serial interface circuit 6. It is composed of an MPU (microprocessor unit) 7 and a display control device 8.

Further, both are connected through interface terminals 11 and 12 and display interface terminals 13 and 14.

Next, the operation of this conventional input/output system will be explained.

Methods for detecting input coordinates include electromagnetic induction method,
Although there are various methods such as a pressurization method, the case where an electromagnetic induction method is adopted will be described here.

In the electromagnetic induction method, an excitation coil (not shown) is provided on the coordinate indicator 31 side, and the coordinate input device 3 uses a sense line (not shown) embedded in the input plane of the coordinate input device 3 to transmit the magnetic field emitted from the coordinate indicator 31. ), and changes in the magnetic field are detected by XY
Outputs 4 times of location coordinate detection. XYY standard detection black detection circuit 4 inputs the change in the magnetic field, calculates the (X, Y) coordinates on the input plane of the coordinate input device 3 pointed by the coordinate indicator 31,
This (x, y) coordinate is output to the serial interface circuit 5. Furthermore, if the pen tip of the coordinate indicating tool 31 is separated from the input plane of the coordinate input device 3 by a certain distance or more, the coordinate detection circuit 4 cannot detect a change in the magnetic field, and a code indicating undetectable (hereinafter referred to as an undetected code) is detected. ) is added to the (x, y) coordinates and output to the serial interface circuit 5. The serial interface circuit 5 transfers the (X, Y) coordinates to the host computer 2 through the interface terminal 11 in a communication data format according to the transfer rate, stop bit length, etc. set in advance by the user.

Serial interface circuit 6 of host computer 2
is input through the interface terminal 12 (X,
Y) Output the coordinates to the MPU 7.

The MPU 7 controls the information in the display memory in the display control device 8 so that the display is performed at the coordinates on the display plane corresponding to the (x, y) coordinates only when the input data has no undetected code added. Update.

The display control device 8 creates display data of a target pattern from the values in the display memory, and outputs this display data to the input/output device 1 through the display interface terminal 14.

In the input/output device il, when the display data is inputted through the display interface terminal 13.

Display data is displayed on the display device 10.

In this way, in the prior art, it is possible to display a target pattern at the same coordinates as on the input plane indicated by the pen tip of the coordinate pointing tool 31.

Furthermore, the xy coordinate detection circuit 4 periodically monitors changes in the magnetic field in the coordinate input device 3. Therefore, when the pen tip of the coordinate indicating tool 31 is slid on the input plane, it is directed from the input/output device 11 toward the host computer 2.
Periodically sends out the coordinates of the pen tip. Therefore, the trajectory of the pen tip can be displayed on the display device 10.
You can input characters and shapes using handwritten images.

[Problems to be Solved by the Invention] In the prior art described above, all detected (X, Y) coordinate data is transferred to the host computer. In addition, the speed of detecting coordinates in the XYY mark detection circuit is 200ρoint15ee (200ρoint 15ee per second) even with the currently commercialized one.
00 point coordinates) and is fast, and in the future,
There is a trend towards even faster speeds.

However, in current host computers (for example, personal computers in general), the data transfer speed of the serial interface circuit is mainly around 9,600 bps, and if display processing is included, the speed becomes even slower, with a limit of about 4,800 bps. becomes.

Therefore, if the amount of information required to transfer the coordinate data of a construction site is 5 bytes (50 bits including the start bit and stroke pit), even if the coordinates of 200 points can be detected per second.

4800÷50=96, and only the coordinates of 96 points can be transferred.

As a result, there were problems as shown in FIG. 5(a).

In FIG. 5(a), 31 is a coordinate indicating tool, and 51 is an input plane of the input/output device r.

Here, if the pen tip of the coordinate indicating tool 31 is moved from point A to point B in one second while keeping it in contact with the input plane 51, as mentioned above, compared to the coordinate detection ability of the input/output device,
Since the data transfer ability between the host computer and the input/output device is low, the movement of the coordinate indicator 31 on the seat 411 from point A to point B can only be displayed from point A to point C; There was a problem that the display could not follow the movement at all.

Therefore, in order to improve the followability of 1 display, we detected (x
, y) any number of (x, y) coordinate data
One possible method is to output only the coordinate data to the host computer.

However, in this method, for (X, Y) coordinate data,
Since the amount of (X, Y) coordinate data output to the host computer is small, even if a rounded trajectory is input, an angular trajectory is displayed as shown in Figure 5(b). there were.

As described above, an object of the present invention is to provide an input/output device that can perform coordinate output with improved display followability and display quality for the input even when inputting characters and figures using handwritten images at high speed. and to provide an input display system including such an input/output device.

[Means for solving the problem] The above purpose is to generate coordinate data of a position specified from the outside and send it to a host computer, and the host computer converts the coordinate data into display data and transfers it. In an input/output display device for displaying, a detection means for detecting whether or not a position instruction is input from the outside, a storage means for storing generated coordinate data while an instruction is input, and a storage means for storing generated coordinate data while an instruction is being input. A part of the generated plurality of coordinate data is thinned out and transferred to the data processing means, and when the external position instruction is completed, all of the coordinate data stored in the storage means or the thinned out part is transferred to the data processing means. The present invention is closely related to the present invention, in that it includes a transfer control means for transferring the remaining coordinate data that was not transferred to the data processing means.

When the transfer control means detects that coordinates are being input, the transfer control means removes at least one or more lower bytes of the coordinate data, which is composed of a plurality of byte information to indicate coordinates in the X direction (Y direction), and performs the transfer. It may also have a function.

When the transfer control means detects that coordinates are being input, the transfer control means outputs the coordinate data to the interface device as coordinate information in the X direction and Y direction, and any other optional additional information, and when it detects that the manual input is completed, the transfer control means outputs the coordinate data to the X direction. It may have a function of providing only direction and Y-direction coordinate information.

Further, according to the present invention, an input display system is configured by connecting an input/output device and a host computer having a function of processing coordinate data transferred from the input/output device into data for display.

[Function] In the present invention, the input end detection means inputs (x,
y) Determine whether the user is inputting data based on the coordinate data. When the user is inputting, the storage means stores the input (x,
y) Store coordinate data.

If the user is inputting coordinates, the transfer control means outputs only some arbitrary coordinate data from among the input (x, y) coordinate data to the interface device. After the user completes the input, the stored (X, Y) coordinate data is newly output to the interface device.

This allows the user to roughly send the input coordinates to the host computer while inputting the coordinates.
The locus of the figure drawn by the user can be approximately displayed. Therefore, one graphic can be displayed with good followability to the user's input.

Also, after the user finishes inputting the figure, it is memorized (x,
y) By sending coordinate data to the host side, accurate figures, etc. can be displayed using all coordinate data.

[Examples] Examples of the present invention will be described below with reference to the drawings.

The input display system of this embodiment is the first rj! As shown in i, the coordinate input device 100 and the coordinate input device 100
A transfer data control bag that controls the transfer of (x, y) coordinate data from! ! 15, an interface device 101, and an input/output device 1 having a display bag [10] and an interface family [102].

It is constructed by connecting a host computer 2 having an MPU 7 and a display control device 8 via interface terminals 11 and 13 and 12 and 14.

The host computer 2 constitutes a data processing means that converts coordinate data transferred from the input/output device 1 into display data. That is, as shown in FIG. 1, an interface device 2102 that receives input of transfer data, a display control device 8 that has an internal display memory and that creates display data from the contents of this display memory and outputs it. The MPU 7 writes information into the display memory in the display control device 8 so as to display a predetermined pattern (for example, a dot) at a display position corresponding to the input coordinate data.

Here, the MPU 7 and the display control device 8 constitute a data conversion means for converting coordinate data into display data.

The external appearance of the input/output device 1 of this embodiment is, for example, substantially the same as that shown in FIG. 3.

That is, in FIG. 3, the coordinate input device 100 shown in parentheses and the display device 10 are superimposed, and the display device 1
It is configured such that coordinates can be input from the top surface of 0 using the coordinate display device 31.

As the display device 10, a conventional device can be used; for example, a liquid crystal display device is used.

Of course, other display devices may be used as long as they are integrated with the coordinate input device 100 and can input and display coordinates. For example, a plasma display may be used.

The coordinate input device gloo can be of any of the various types described above. - For example, an electromagnetic induction method is preferably used.

As the transfer data control device 15, for example, one shown in FIG. 6 is used. This will be discussed later.

In this embodiment, in order to simplify the explanation, the coordinate input device 3 and the XY coordinate detection circuit 4 in the conventional example are combined into a coordinate input device 100. Of course, the functions of the coordinate input device 1100 are the same as the coordinate input device 3 and the XY coordinate detection circuit 4 in the conventional example.
It combines the functions of Furthermore, the coordinate input device 1
The method of inputting 00 is also the same as in the conventional example, and is performed using the coordinate indicating tool 31.

Furthermore, the interface devices 101 and 102, like the serial interface circuits 5 and 6 in the conventional example, provide an interface between the input/output device I and the host computer 2.
(X, Y) coordinate data is exchanged,
The (X, Y) coordinate data may be serial data or parallel data, and the data format is not limited.

Next, the operation of this embodiment will be explained.

Note that among the operations of each part of this embodiment, those similar to those of the conventional example shown in FIG. 3 described above will be briefly described.

In addition, in explaining the operation of this embodiment, the coordinate detection speed in the coordinate input device 100 is set to 190 paint.
/see, the speed at which the interface device 101 transfers data to the host computer 2 is 4800 bps, and (X, Y) coordinate data.

The data is 5 bytes as shown in Table 1.

In Table 1, X engineering and ~XIl are coordinate data in the X direction, y
i * "" yo is the coordinate data in the Y direction, RDY is the undetected code (1 bit), and 1 (l When l#,
This means that it has not been detected.

In addition, many coordinate pointing devices are generally equipped with a switch, and 84 to S0 in Table 1 are data indicating ON/OFF of the switches provided in the coordinate pointing device. Information on this switch includes, for example, information on turning on/off the operation of the coordinate pointing tool, switching the writing pressure, and the like.

First, the operation of the input/output device 1 will be explained.

The coordinate input device 10 pointed by the pen tip of the coordinate pointing tool 31
The series of operations for detecting the coordinates of 0 on the input plane is the same as in the conventional example, and in this embodiment, the coordinates of 190 points are detected per second. The (x, y) coordinate data 16 detected by the coordinate input device 100 is output to the transfer data control device 15.

Table 1 Even if 190 points of (X, Y) coordinate data 16 are input per second, at a transfer rate of 4800 bps, only 96 points, about half of the number of input coordinates, can be transferred. In order to improve followability, the transfer data control device 15 first checks whether an undetected code is added to the input (X, Y) coordinate data 16 (
Detect whether RDY in Table 1 is 1 or not. When no undetected code is added, it is determined that the user is currently inputting a figure or character, and the input (x, y
) as well as storing the coordinate data 16.

By extracting coordinate data from this (X, Y) coordinate data 16 at a preset pitch, only some arbitrary (X, Y) coordinate data can be transferred to the interface device 101.
Output to. Then, an undetected code is added (x,
y) After inputting the coordinate data 16, the user determines that the input has been completed, and re-outputs the stored (X, Y) coordinate data to the interface device [101].

The method for outputting (x, y) coordinate data input by the interface device 101 is the same as in the serial interface section 15 of the conventional example. In other words, the interface device W10 outputs the input (cx, y) coordinate data from the host computer. Output to 2.

(Left below) The host computer 2 creates display data from the input (X, Y) coordinates, and the input/output device 1 receives this display data and creates a corresponding L dot on the display device 110 in the input/output device 1. The series of operations up to displaying is also the same as in the prior art described above.

In this way, in this embodiment, while the user is inputting figures etc., the coordinate data output from the input/output device 1 to the host computer 2 is discrete coordinates, so the dots to be displayed are discrete; This enables display with good followability. Furthermore, when the user finishes inputting, all the coordinates detected by the XY coordinate detection circuit 4 are output again, so the spacing between the dots is displayed as if it were gradually smoothed from the point where the input started. , and does not make the user feel uncomfortable.

A further advantage is that the configuration and processing of the host computer 2 do not need to be changed at all from the prior art.

Furthermore, the time it takes to display the smoothed image is, for example, about 4 seconds for an input of 2 seconds (
When the data transfer rate is the same as the value explained in the example), the user can use this time to think about the figure to input next, and the user will not have to worry about the burden when inputting the figure etc. There isn't.

Next, transfer data control bag a! suitably used in the input/output device of the present invention! An example of No. 15 will be described with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of one embodiment of the transfer data control device.

Transfer data control bag of this embodiment! ! 15 includes an input end detection circuit 21, a storage device 22 such as a readable/writable memory, a control circuit 23, a clock generation circuit 24, and an address generation circuit 25. This transfer data control device 15 receives an output (X) from the coordinate input device 100 described above.

Y) As the coordinate data 16, the coordinates of 190 points per second are input to the input end detection circuit 21. The signal is input to each of the storage device 22 and the control circuit 23.

First, the operation when no undetected code is added to the (X, Y) coordinate data 16 will be explained.

The clock generation circuit 24 receives the following input (X.

Y) 5 as shown in Table 1 in synchronization with the coordinate data 16.
Among the byte (X, Y) coordinate data 16, D is inputted via the input end detection circuit 21 for each byte of data.
One clock signal is generated at the terminal to which the 7th bit data is input, and is output to the address generation means 25.

The address generating means 25 is composed of a counter, etc., and when the clock signal is input, it counts up the input clock number from O to 1, 2, 3, etc., and outputs this count value to the storage device 22. do.

The storage device 22 stores the above-mentioned (x, y) coordinate data 16 at an address according to the input count value. In this manner, the storage device 22 stores all input (x, y) coordinate data 16.

Further, the control circuit 23 controls only one point out of every two points of the input (X, Y) coordinates to the ink face device 1.
Output to 01, that is, 95 points per second (
Outputting X, Y) coordinate data 16 to the host computer.Next, the operation when an undetected code is added to the input (X, Y) coordinate data 16 will be explained.

The input end detection circuit 21 operates as shown in Table 1 (x, y
) Of the coordinate data 16, only the D-th bit is input, and when the input data is 1'', it is determined that an undetected code is added, and the input end signal 26 is sent to the storage device 22, the control circuit 23, Clock generation port 1MI24 and output to address generation means 25.

When the clock generation circuit 24 receives this input end signal 26, it divides the period of the clock signal by two and outputs the divided clock signal to the address generation circuit 25. The address generation circuit 25, which is composed of a counter, inputs the input end signal 26 to the clear terminal, clears the incremented count value to the initial value O, and inputs the clock frequency divided by two. , restart counting.

The storage device It22 uses the input end signal 26 as a read/write switching signal. Therefore, when the input end signal 26 is input, the storage device i22 outputs the stored (X, Y) coordinate data 16 to the control circuit 23 according to the address counted by the address generating means 25. In the control circuit 23, when the input end signal 26 is input,
The (X, Y) coordinate data 16 input from the storage device 22 is output to the interface device 101.

In the above embodiment, the address generation circuit 25 uses O as the initial value and counts up.

The initial value may be any value n.

Furthermore, a first-in first-out type memory is used as the storage device 22, and the clock generated by the clock generation circuit 24 is stored in a storage bag! ! 22, the address generating means 25 can be omitted.

Furthermore, in the above embodiment, even if the user continues to input data for 30 seconds, the storage capacity to be stored in the storage device 22 is only 28.5 Kbytes (5 bytes x 190 points x
30 seconds). Therefore, as the storage device 22, it is sufficient to use a 32 byte SRAM, which is inexpensive and easily available, and there is no problem in terms of high speed, feasibility, etc.

Next, the configuration and operation of another embodiment of the transfer data control device 15 suitably used in the present invention will be described with reference to the drawings.

FIG. 6 is a block diagram showing the configuration of another embodiment of the transfer data control device 15. Components that are the same as those in FIG. 2 are given the same numbers and redundant explanations will be omitted.

In FIG. 6, the transfer data control device 15 includes an input end detection circuit 21, a storage device 22, a control circuit 23, a second control circuit 61, a clock generation circuit 24, and an address generation means 25. be done.

Note that 16 is output by the coordinate input device 100 (X,
Y) coordinate data.

The second control circuit 6 has a function of storing the latest input (x, y) coordinate data until it is updated with the next data, and a function of storing the latest input (x, y) coordinate data and the next one. It has the function of comparing the input data with the input data and outputting the newly input data only if they are not the same, and also newly storing and holding this data.

In this embodiment, the input end detection circuit 21 detects whether or not the user is in the process of inputting based on the (x, y) coordinate data 16 input from the coordinate input device 160. When the user is inputting, input (X.

Y) Storing the coordinate data 16 in the storage device 22, and
The control circuit 23 outputs only some arbitrary (X, Y) coordinate data from among the input (x, y) coordinate data. Furthermore, after the user completes input, the memorized (X, Y
) Coordinate data is newly output from the control circuit 23. These series of operations are the same as the embodiment described using FIG. 2 above.

The (X, Y) coordinate data output by the control circuit 23 is input to the second control circuit 61.

The second control circuit 61 compares the (X, Y) coordinate data input last time with the (x, y) coordinate data input this time. Then, only when the (x, y) coordinate data input last time and the (x, y) coordinate data input this time are different values,
The currently input (x, y) coordinate data is output to the interface device 101 and is stored in a buffer for comparison with the next input (X, Y) coordinate data. Also, the (X, Y) coordinate data input last time and the (x, Y) coordinate data input this time
, y) When the coordinate data is the same value, the (X
, Y) discard the coordinate data.

As described above, in this embodiment, depending on the user's input method, the output to the host computer 2 is more difficult than in the embodiment described using FIG. The number of unnecessary (x, y) coordinate data points is reduced. As a result, while the user is inputting a figure or the like, the display followability is even better than in the embodiment described using FIG. 2. Furthermore, even after the user has finished inputting figures, etc., the smoothed image can be displayed at high speed. Compared to the embodiment described using FIG. 2, this does not make the user feel any discomfort.

Further, in this embodiment, the second control circuit 61 is.

From control circuit to interface device! ! Although the (X, Y) coordinate data output to the memory bag 101 was controlled, the second control circuit 61 was provided between the memory bag 'a22 and the control circuit 23,
The above control may be performed on the (X, Y) coordinate data input to the control circuit 23, and the same effect can be obtained.

Next, the configuration and operation of yet another embodiment of the transfer data control device 5 suitably used in the present invention will be described with reference to the drawings.

FIG. 7 is a block diagram showing the configuration of another embodiment of the transfer data control device 15. Components that are the same as those in FIG. 2 are given the same numbers and redundant explanations will be omitted.

In FIG. 7, the transfer data control device 15 includes an input end detection circuit 21, a storage device 22, a control circuit 23, a second control circuit 71, a clock generation circuit 24, and an address generation means 25. be done.

Note that 16 is output by the coordinate input device 100 (X,
Y) coordinate data.

The second control circuit 71 has a function of converting (x, y) coordinate data into rough values to reduce the information amount of the coordinate data.

In this embodiment, input from the coordinate input device 100 (
Based on the X, Y) coordinate data 16, it is detected whether the user is inputting information. When the user is inputting, the input (x,
y) Storing the coordinate data 16 in the storage device 22, and
The control circuit 23 outputs only some arbitrary (x, y) coordinate data from among the input (x, y) coordinate data. Furthermore, after the user completes input, the memorized (x, y
) The series of operations for newly outputting coordinate data from the control circuit 23 is the same as in the embodiment described using FIG. 2 above.

The second control circuit 71 receives the (x, y) coordinate data 16 output from the control @ path 23 and the input end signal 26 output from the input end detection circuit 21 . While the user is inputting a figure or the like, the second control circuit 71 converts the X-direction coordinate data and Y-direction coordinate data of the input (X, Y) coordinate data 16 into rough coordinates. Convert to data. In other words, in this embodiment, among the 5-byte data in Table 1, X0 to X, which are the lower coordinates in the X direction, and Y0 to Y, which are the lower coordinates in the Y direction.
By not forwarding Y, one (X.

Y) Increase the amount of information (number of bytes) of coordinate data from 5 bytes to 3
The data is reduced to bytes and output to the interface device 101.

Furthermore, when the user finishes inputting a figure, etc., only the coordinate information in the X direction and the coordinate information in the Y direction are extracted from the input (x, y) coordinate data information and output to the interface device 101. In addition.

If there is no change in the data sent as other information regarding ON, OFF, and OFF of the switch provided on the coordinate indicating tool, the data is redundant and is therefore discarded.

In this way, in this embodiment, compared to the embodiment using FIG. The amount of data becomes smaller. As a result, similar to the effect of the embodiment explained in FIG. 6, while the user is inputting figures etc., the display followability is even better than in the embodiment explained using FIG. 2, and Even after the user inputs a figure, etc., a final smooth display can be obtained at high speed, and the user does not feel any discomfort compared to the embodiment described using FIG.

Further, as the processing of the second control circuit 71, the processing performed while the user is inputting a figure etc. described in this embodiment and the processing performed after the input is completed may be performed independently, respectively.
Furthermore, this embodiment and the embodiment described using FIG. 6 may be combined and implemented.

In the above embodiment, after the user finishes inputting figures, etc., all stored coordinate data is sent to the host computer 2 side, but only coordinate data different from the coordinate data sent during input is sent. It may also be a configuration.

In the embodiments described above, a transfer data control device 5 is provided on the input/output device 1 side to determine whether the user is inputting a figure or the like and to control the coordinate data to be output. Incidentally, if the data transfer rate can be increased, a data control device having an equivalent function may be provided on the host computer 2 side.

A block diagram of such an embodiment is shown in FIG.

Components that are the same as those in FIG. 1 are given the same reference numerals and redundant explanations will be omitted.

In FIG. 8, 1 is an input/output device, and 2 is a host computer.

The configuration and operation of the input/output device 1 are exactly the same as those shown in FIG. 3 above. That is, this input/output device 1 has a coordinate input device 100, an interface device 101, an interface terminal 11, a display interface terminal 13, and a display device 10.

In this embodiment as well, similarly to the previous embodiment, the coordinate input bag [3 in the prior art and the xy locus search output circuit 4 are combined to form a coordinate manual bag fitlo.

The host computer 2 is connected to the Intaffny 8 devices 1 and 02.
, a data control device 91, an MPU 7, a display control device 8, an interface terminal 12, and a display interface terminal ↓1.

When (x, y) coordinate data is sent from input/output device 1,
In the host computer 2, the interface device 102
receives (x, y) coordinate data through the interface terminal 12 and outputs it to the data control device 9↓.

The data control device 91 has exactly the same configuration as the transfer data control device 15 described in the previous embodiment, such as detecting undetected codes from input (x, y) coordinate data, and performs similar processing. The above (X, Y) coordinate data is M P
Output to U7. The operations in the MPtJ 7 and the display control device 8 are the same as in the prior art described above.

This embodiment is suitable for improving the ability to follow the user's input speed when the transfer rate between the input/output device and the host computer is high but the display speed of the display device is slow.

Furthermore, in the embodiments described above, it is determined whether the user is inputting a figure or the like based on the presence or absence of an undetected code, but information on the switch provided on the coordinate indicating tool, coordinate data in the X direction, etc. , Y-direction coordinate data, etc., coordinate input device 1
00 outputs (X.

Y) It may be determined from which information in the coordinate data 16 whether the user is inputting information.

Further, in the embodiments described above, an input/output device in which the coordinate input device and the display device are integrated has been described, but the coordinate input device and the display device may not be integrated and may be separate devices. In this case, any device can be used as the display device, since there is no need to consider the presence of a coordinate input device.

The input/output devices of each of the embodiments described above can be suitably used in the graphic input device 1 and the handwritten character input device. In addition, an input display system using such an input device can
A character recognition device, an electronic editing device, etc. can be configured. Furthermore, the input display system described above can also be configured as part of the functions of the information processing device.

Note that each of the embodiments described above may combine features of other embodiments as necessary.

[Effects of the Invention] According to the present invention, while the user is inputting a figure, etc., the user does not output all the detected coordinate data to the host computer, but only some arbitrary coordinate data from among the detected coordinates. This has the effect that the display follows the input well, and is easy to operate and use.Furthermore, even if the user inputs a rounded shape at high speed, it is detected after the input is finished. This re-outputs all coordinates to the host computer, and instead of ending the process with a angular figure or scattered dots, the system gradually smoothes the coordinates from the point where the user started inputting after completing the input. , it is possible to display such that the angular figures and scattered dots are corrected. Therefore, there is an effect that the user does not feel uncomfortable and the operability is good.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of an embodiment of a transfer data control device preferably used in the present invention, and FIG. FIG. 4 is a block diagram showing the configuration of a conventional input display system; FIG. 5 is an explanatory diagram for explaining problems in the conventional technology; FIGS. 6 and 7 are diagrams showing the structure of the present invention. FIG. 8 is a block diagram showing the configuration of another embodiment of the transfer data control device suitably used in the present invention. 1... Input/output device, 2... Host computer, 3
Coordinate input device, 7 MPU, 8 Display control device, 10 Display device, 21 Input end detection circuit, 22 Storage device, 23 Control circuit , 24
. . . Clock generation circuit, 25 . . . Address generation means, 31 . . . Coordinate pointing device, 100 .
101, 102...Interface device.

Claims (1)

[Scope of Claims] 1. Coordinate input means that recognizes coordinates instructed from the outside and outputs coordinate data corresponding to the recognized coordinates, an interface device that outputs the coordinate data to a host computer, and the host computer. In an input/output device having a display means for receiving and displaying a display signal capable of displaying an arbitrary pattern at a display position corresponding to the coordinate data generated by a computer, an input for detecting whether or not coordinates are being input from the outside. end detection means; storage means for storing coordinate data recognized by the coordinate input means during coordinate input; An input/output device comprising: transfer control means for controlling the coordinate data stored in the storage means to be output to the interface device, and upon detecting completion of coordinate input, to output the coordinate data stored in the storage means to the interface device. 2. Recognize the designated position input from the outside to generate coordinate data, transfer this coordinate data to a data processing means that converts it into display data, and receive the converted display data from the data processing means. , an input/output device that displays the display data at a position on the screen indicated by the coordinates, which includes a storage means for storing the generated coordinate data, and a storage means for detecting whether or not a position instruction is input from the outside and outputting the instruction. is input, some of the generated coordinate data is thinned out and transferred to the data processing means, and when the external position instruction is completed, the coordinate data stored in the storage means is thinned out and transferred to the data processing means. an input/output device comprising: transfer control means for transferring all of the coordinate data or the remaining coordinate data that has been thinned out and not transferred to data processing means. 3. When the transfer control means detects the end of the input, the transfer control means transfers at least one coordinate data different from the coordinate data output to the interface device during the input from among the coordinate data recognized during the input to the interface device. The input/output device according to claim 1, wherein the input/output device has an output function. 4. The transfer control means compares whether the coordinate data to be output to the interface device is the same as the previously output coordinate data, both during and after the input of a position instruction from the outside, and only when the coordinate data is different. , wherein the coordinate data is output to an interface device.
The input/output device described in 2 or 3. 5. When the transfer control means detects that coordinates are being input,
Claim 1, 2, or 2, characterized in that the method has a function of excluding at least one or more lower bytes of coordinate data composed of a plurality of bytes of information to indicate coordinates in a direction (Y direction). 3. The input/output device described in 3. 6. When the transfer control means detects that coordinates are being input, the transfer control means transfers the coordinate data to be output to the interface device in the X direction and Y direction.
Claims 1, 2, and 3, characterized in that it has a function of setting the coordinate data in the X direction and the coordinate information in the Y direction only as the coordinate information in the direction and any other optional additional information, and when the end of input is detected. or the input/output device described in 5. 7. The input/output device according to claim 1, 2, 3, 4, 5 or 6 is connected to a host computer having a function of processing coordinate data transferred from the input/output device into data for display. An input display system consisting of 8. An input/output device that recognizes coordinates instructed from the outside, outputs coordinate data corresponding to the recognized coordinate data to an external device, receives display data from the external device, and displays according to the display data. It is possible to connect
A host computer having a function of converting the coordinate data transferred from the input/output device into display data and outputting the same, comprising means for storing the coordinate data transferred from the input/output device, and a means for specifying a position from the outside. is detected, and if an instruction is input, the conversion process to the display data is executed for only a part of the transferred coordinate data, and the position instruction from the outside is detected. and a means for converting all of the coordinate data stored in the storage means or the remaining coordinate data that has been thinned out and not subjected to the conversion process into display data when the process is completed. Computer.