JPS5835680A - Pattern input device - Google Patents

Abstract

PURPOSE:To input many distributed coordinate points with one operation of a pen or the like to prevent the lowering of the quality of an input pattern, by reading out contents of a deviation memory successively when a coordinate value is inputted from the pen or the like and calculating a coordinate value of the sum or the difference between the coordinate value and the deviation value. CONSTITUTION:A position on a tablet 105 is indicated by a pen 107 or the like, and a coordinate value corresponding to a deviation value for the coordinate value corresponding to the position of the pen 107 or the like is stored in a deviation value memory 116 by opening a memory gate 117. When the coordinate value is inputted from the pen 107 or the like, contents of the memory 116 are read out successively to X and Y adders 124 and 125 and a discriminating circuit 133. A coordinate value of the sum or the difference between coordinate values from X and Y registers 114 and 115 and the deviation value from the memory 116 is calculated in adders 124 and 125, and the calculated coordinate value is applied to a picture memory 130 together with the discrimination result of the circuit 133, and they are stored while preventing the lowering of the quality of the input pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a graphic input device, and particularly to a graphic input device that stores graphics input to a tablet in an image memory.

Conventionally, in this type of figure input device, one image memory corresponds to the input position on the tablet, and generally only one figure drawn by one pen operation on the tablet is stored. It is.

There are many types of figures that can be input, and it is frequently the case that the same or similar figures are input. In order to input such a figure using the conventional method, it is necessary to draw the figure on the tablet as many times as necessary with a pen or the like and input the figure each time. Therefore, even if you speed up the processing by inputting figures using this method, such as Luco and Id, =77, it is not an efficient input method.7Also, inputting the same or similar figures It is difficult to imagine that the person operating the drawing will always draw accurately, and it has the disadvantage that the quality of the input figure will be significantly degraded.

The purpose of the present invention #'i is to eliminate these drawbacks, and it is an image memo 17 that uses a figure drawn on a tablet as a figure that is multi-distributed between a deviation value memory and an adder.
It is an object of the present invention to provide a graphic input device that stores data.

According to the present invention, a tablet, a pen, etc., a deviation value memory storing a plurality of coordinate values that correspond to the deviation value between the coordinate values obtained from the pen, etc., and a coordinate value input from the pen, etc. an adder that sequentially reads the contents of the deviation value memory and calculates the coordinate value of the sum or difference between the coordinate value and the deviation value; an image memory that stores the coordinate information configured by the adder; The above object can be achieved by inputting figures that are sequentially dispersed using the pen or the like.

Explain in detail the structure, function, operation, and effects.

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing distributed graphics stored in an image memory.

Although the gist of the present invention can be applied to general tablets, the tablet described in Japanese Patent Application No. 52-34629 (Japanese Unexamined Patent Application Publication No. 53-120338) by the same inventor will be explained here.

In FIG. 1, the reference clock signal 101 is the XY frequency divider circuit 1021C.
When input, the frequency is divided and an X scan pulse 103 and a Y sense pulse 104 are output. The X scanning pulse 103 is input to the x drive circuit 106 of the tablet 105 and scans the tablet 105 in the X direction. For example, tapelet)
If 105's XIItl-256 lines and Y41 are 256 lines, then the traversal in the %X direction will be 256 lines of X@ moving from left to right one after another, and every time one X scan is completed, Y sense pulse 1 will be generated.
04 and %Y@tR Next, repeat the switching operation of 0 or more 256 x 256 times switching from top to bottom, and scan the entire input surface of the tab.
It becomes c.

When inputting the entire figure using the Tape zo5h VC pen, etc. 107, the X scanning pulse 103 arrives at the X-ray corresponding to the Fix coordinate value, and the Y output signal 109 corresponding to the Y coordinate value increases J!
if1m*! The signal is generated through the Y sense circuit 108 having all the signals. When the Y output signal 109 is generated, Xy-) 110
-(!-Y game) 111tll and X scanning pulse 103
The X coordinate signal 112 and the X coordinate signal 113 are generated in synchronization with the - timing of the Y sense pulse 104.
X register 114. Input to X register 1156C. In this case, the X scan pulse 103 and the Y sense pulse 104F
Both i are 8 bits, but the number of bits of the X register 114 and the X register 115 is 9 bits, and the coordinate value is stored in the lower 8 digits.

When adding this to the contents of the deviation value memory, which will be described later, 2
This is because addition with the complement of may occur.

Now, as soon as the Y output signal 109 is output from the tablet 105 by the pen etc. 107, this is the memory gate 11.
Memory gate signal 1 synchronized with clock pulse by opening 7
18 and memory address fJ +77 data 119
In the figure, the address of the deviation value memory 116 is tentative E16.
(4 bits).

The length of 18 bits is t-9+9=18 bits. The contents of the deviation value memo I7116 are sequentially read from address O to address 15.The translated output of the deviation value memory 116 is 18 bits, and the upper 9 digits are stored in the memory 2 register 120. Each of the memory registers 121 is provided independently. The content of the deviation value memory stores the deviation @z, y corresponding to the X% YJI mark of the tablet 105 that has just been detected 8f'. In other words, the locus I is trying to create a new one based on X and Y.
distance f) of lma + 4 values X and y are returned. memory 2
2 deviation certainty number from register 120 and memoria register 121! 22,! The deviation value signal 123 is sent to the X register 114
, output signal from Y register ttS X register signal 12
6Y register signal 127 and respective X adder 124,
The adder 125 adds n to image 1 (new ~ reference signal input to the memory 130, Xn coordinate signal 12g).

Create Y swindle signal 129tt 0 For example, X coordinate signal 1
If 12% Y locus vxm No. 113'i are respectively fiX = 100°Y = 100, and 2 deviation certainty No. 122.7 deviation value signal 123 is r-20, 7-30, a new extraction will be made. The Xn coordinate signal 12g and the Yn coordinate signal 129 are
It is given by nm 120, Y n = 130.

In addition, since the deviation value may be negative, it is expressed as a two's complement in such a case.
If it receives a write command, 1 is written to the X lower address register 13d. Therefore, for X%YK, 2=a%y
=o, then 1 is added to the address corresponding to the X and Y coordinates of the pen etc. 107. t''L% z-0.

If yζ0, 1 is written to flIn address 9 by χ,y for x,Y. In this case, the address of the deviation value memory 116 is 161S, so the Xn coordinate signal is 128.

Yn signal 129 can take different values of 16a, but depending on the address of some deviation value memo I7 1 1 6, you may not want to write 1t-0. For example, if address 5 of deviation value memory 116 is It may be the case that you do not want to create an input position when it is being addressed. This friend K sets the contents of the deviation value memory 116 at that address to 10 for both r and y.
0000000 and inputs the output signal z411 difference value signal confidence 2 and y deviation value signal 123 from memory X register 120 and memory Controls writing to the image information page 130.

Note that the outputs of the X adder 124 and Y adder 125 are not always positive, that is, there is a possibility that an overflow will occur on the tablet 105 surface.

Look at the most significant digit and if it is 1, no coordinates should be generated. For this purpose, the X adder 124. The most significant digit of the Y adder 125 controls the determination circuit 133t (not shown) to inhibit writing of 1.

Memory address counter 119 starts at the same time as Y output signal 109 of Fi tablet 105 and starts counting.

Since it stops at d, the above operation causes the X coordinate signal 112. When the Y coordinate signal 113 is found, a new coordinate Xn coordinate signal 128 is generated using this as a reference.

A maximum of 16 Yn coordinate signals 129 are generated and the image
130K written. This operation #i tablet) occurs once due to the scanning of 105, so first
Coordinate signal 112. A new coordinate Xn coordinate signal 12 is generated after the y coordinate signal 113 is found until the next coordinate is found.
The generation of g, Ya coordinate signals 129' has ended. Therefore, the positional dust w to be dispersed can be input by 10701 operations of a pen or the like on the surface of the tablet 105.

Figure 2 is a companion diagram that explains the concept of distributed input figures. Since a group of sitting images dispersed by one input operation of the pen, etc. 107 is stored in the image memory 130, when the pen, etc. 107 sequentially moves within the input surface of the tablet 105 and draws a predetermined figure to be drawn, , a group of figures 135 similar to this locus
A total of 12 figures are stored in the a@ which is distributed and stored in the image memory 130, but the remaining 4 are the cases where no input is made by the judgment circuit 133. As is clear from what has been explained with reference to FIG. 2, χili! Difference @1
22 and the y deviation value signal 123 are summed by the X unit 124 and the Y adder 125.

A new Xn coordinate signal 128% and a Yo coordinate signal 129 can be generated, and multiple coordinates or mjI# can be input by operating the pen etc. 107 times, so the above-mentioned drawbacks can be overcome and input can be performed efficiently. Ability to input high-quality shapesKl
Although the explanation has been given based on the embodiments of the present invention, the relationship between the components of each part can be easily processed using conventional techniques. It is clear that even a large number of dispersed coordinates or figures can be input sequentially by operating a 1gm pen or the like.1 Basic operation of the present invention arm. Effect, effect! It is obvious that the present invention can also be applied to the graphic input device K, which is a complicated graphic input device K having a modified configuration and structure, as long as each component is characterized by &.

[Brief explanation of the drawing]

1s is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram for explaining the concept of the distributed input figure O. 101 is a clock pulse, and 102 is an XY frequency divider circuit. xo3dX scanning pulse, 104 is Y sense pulse, 10
1ajj program, 106 is an X drive circuit, 1071. is a pen, etc., 10g is a Y sense circuit, and 109 is! output signal,
・110 is an X gate, 111 is a Y gate. 112 is the xmm signal, 113 is the Y coordinate signal% 114#
iX register, 115 is Y register, 116 tffi deviation value memory, 117 Fi memory gate, 11g is memory gate signal, 119 is memory address counter, 120
is the memory χ register, 1'21 is the memory register, 2 stars, 1
22 is the χ deviation value signal, 123 is the y4Iii difference compensation code %
124 is an X adder, 125 is an X adder, 126 is a χ register signal, 127 is a Y register signal, 128 is a
131 is an Xn address register, and 132 is a Yn address register. 133 is a determination circuit, 134 is a determination signal, and 135 is a group of Mori figures. rate 1 diagram

Claims (1)

[Claims] a deviation value memory for storing a plurality of coordinate values corresponding to a deviation value from a coordinate value corresponding to the position obtained by indicating a position on the tablet with the pen, etc.; an adder that sequentially reads out the contents of the deviation value memory when a coordinate value is input and calculates a coordinate value of the sum or difference between the coordinate value and the deviation value, and coordinate information constituted by the adder; a graphic input device, characterized in that it is equipped with a ij* memory for storing figures, and inputs sequentially distributed figures using the pen or the like;