JPS58144249A - key input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key-powered device for inputting characters by tracing a keyboard with a finger.

In recent years, for example, translators, electronic memos, and RASIC7
' Electronic devices that can input alphabetic characters have been commercialized, such as electronic small certificate needles that can be assembled with c1 grams. However, this Oden electronic equipment has an increased number of keys Oa,
Key? (1) It occupies a large area, takes a long time to find the desired key), and has poor operability.

On the other hand, a handwriting input device is also generally involved. However, these are electromagnetic coupling connections! However, the structure of the input device is complicated because pressure-sensitive rubber is used, and the amount of information is large (for example, XL image and Y coordinate are 0 to 500, etc.). ), it required a large amount of memory and the processing was complicated.

The present invention has been made in view of the above points, and an object of the present invention is to provide a key-powered device that can perform manual operations with a small number of i-keys using a numeric keypad, a funk key, etc. used for ordinary calculations. With the goal.

Below, with reference to the drawings, we will discuss aFIii regarding the case where the #10 peak #m of the present invention is implemented on a large computer. FIG. 1 shows the external configuration, in which a display section 2 and a key gate 3 are provided on the upper surface of the case body J0. The above display s1, for example, the upper and lower 2RO display parts 1s and 2k using a liquid crystal display panel.
It consists of 9.5x7 dots with numbers 0 to 90,
The alpha pe, g, +, -1x, and ÷0 operation symbols of M~2 are shown on the display. Keypad 1 is, for example, a 15x6 keypad, 7 keys, 7 keys, etc.
They are arranged in a matrix to form a handwritten input v44 meeting. In addition, the keypad 3 has a function to turn the power on and off.
ON”, rOFFJ key, [MuCl (all clear)
key, an rCJ (clear) key, a ``Koshimachi'' key for electronic memos, ``↑'' and ``↓'' keys to read the stored contents of electronic memos, and a ``mode'' key 61 to switch between mode l and mode P2. . The mode t1 is in the calculation mode, in which each key has its original function, and the mode 2 is in the matrix input mode, in which handwritten characters can be input from the handwriting input section 4.

Therefore, in the ζq)t) risk input mode, p
Numbers O~9, ゛um~2 al7 ape, g, + % -
You can manually display the calculation symbols such as % x % ÷. Then, by pressing the rMIMOJ key, the character data in the table is stored in the electronic message. Also, if you manually do something like r5+2-J by hand, you can also do needle X, which makes it faster.

Next, the configuration of the electronic enclosure provided in the case main body JPIK will be explained in two pages. Note that the second g is a rounding function pro that explains the recognition function.

Related to the calculation function and electronic memo function
The part that does is omitted. In the Kz diagram, reference numeral 11 denotes a key manual power section, which generates key manual data in response to the key operation of keypad 1 in the JI diagram 11. That is, the J key input section 11 generates a code for each key's original function in the calculation mode, and generates coordinate data of the operating keys in the handwriting manual 1114 in the matrix input mode. Of course, a normal key code is generated from the pressed key, but this key code is passed through a conversion process to create coordinate data. Then, the coordinate data from the key manual force mJJ is sent to the input arm turn memory 12 and stored therein. The parable turn data stored in the person's mother turn memory 12 is sent to the 1iii number extraction professional and IJ, where the number of strokes is extracted and stored in the 1iii number memory 14.
Stroke features are extracted and stored in the memory 1-. The number of strokes and stroke percentage of the input character stored in the stroke number memory 14 and the stroke characteristic memory 1- are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character stored in the stroke number memory 14 and the stroke characteristic memory 1- are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character are sent to the matching circuit 11, and the number of strokes and stroke percentage of the input character are sent to the matching circuit 11. be compared. In the standard parable turn memory 18,
On the stroke count side, the stroke characteristics for the turf and the turf are stored. The matching block 1r is the stroke number memory 1.
i! written in 4! Standard # with the same number of strokes as j #
The stroke characteristics of the turn t*quasi-f are read out from the turn memory 18, compared with the stroke characteristics of the human cover turn, and the character-weaving is performed, and the matching zorotsu 17
accesses the character generator 19f according to the - character, generates a dot no f turn, and displays it on the display section 1.

The above-mentioned stroke 4G mold indicates the stroke direction and time order of character input. In other words, the direction of the stroke is +X of the x-y coordinates as shown in Figure 3.
direction, "l", -X direction "3", +Y direction "2"
, -d direction is defined as the "4" direction. Then, set the above stroke characteristics for each character according to the number of strokes, and store them in advance in the turn memory 1# as the bias/mother turn.For example, if it is a person character of the alphabet,
As shown in Figure 4 (1), there can be two strokes for shochu and three strokes as shown in Figure 4 (1), so we will set pen-jun and mother-turn for each case. When writing MU with two strokes, the biased pattern memory 1# is as shown in Figure 4 (
As shown in a), "2" is written as the number of strokes containing alphabetic characters in the stroke number storage unit 1411, and the directions of the stroke features 'iX and Y and their changes in direction are written in the stroke feature storage s1mb. This stroke characteristic storage section igb can store two-digit data for each stroke, and the upper digits store data indicating the X and Y directions, and the lower digits store data indicating changes in the direction. There is. Then, in the 2ijii stroke, xwi
Since LlK is in the "l" direction and the Y coordinate is in the "2" direction,
Write that value to the upper digits. Also, in the first half of this first stroke, there is no change in direction, so the numerical value is "1".
enriches the lower digits. And rattan one stroke Ovk cow,
From the upper end of the tb to the lower end, there is no additional data because the direction in the X coordinate does not change from the first half of the stroke, but in the Y-tab, the direction changes to the "4" direction, so the direction of the "12" Write "4" in the first digit due to a mistake in the data, and write data "2" indicating a change in direction in the second digit.The first stroke ends here, so next stroke end mark t -Write. Then, in the 2nd stroke, there is no change in the Y coordinate, so only for the X coordinate, write data with direction "l" and direction change "1".
Since the stroke feature for the image is completed, a character end mark is written following the second stroke data.

In the case of 3iii, the number of strokes ``3'' is written in the stroke number memory sJ#a as shown in Fig. 4, and the stroke number ``3'' is written in the stroke characteristic memory 1mb in the same manner as in the above case. Set jk. Sunawachi, 1st) l
:! -ri is Xm41!1jr3J direction, Y coordinate is "4"
direction (Tol), and since there is no change in direction, the values are both "
l". 11/iI2 stroke is xj! The mark is rl
The J direction and Y coordinate are "4" direction, and the direction change value is "
l". The stripe 3 stroke is x@suke in the rlJ direction,
The direction change value is "1", which is 6. In addition, there is no deviation of the Y seat g in jI3 strokes, and in the same way, the number of strokes and stroke %ilk club semi-arm turn memory 1 for other alphabet letters, numbers, shi, -1×10, etc.
Set to 8. Note that the above-mentioned standard number nine turns may be exactly the same parable turn depending on the characters.

For example, as shown in Figure 4 (C), the alphabet "D"
” and I-PJ, the number of strokes and stroke percentage are exactly the same. Therefore, for such characters, compare the distances between the start points and end points of each stroke and the next stroke, and if the difference is ``2'' or more, the direction is 1i.
lk and set it in the standard/arm turn memory 11. In the case of 0, for example, FD, as shown in FIG. 4(d), the start and end points of the first and second strokes are at the same position, so The direction features are all "0" in the X and Y coordinates. For rPJ, see Figure 4 (・)
As shown in the figure, the first stroke and the second stroke have starting points at the same position, but end points at different positions. In other words, since the end point of the second stroke is away from the end point of the first stroke in the "2" direction only in the JAY coordinate, the direction % mold is "2" only in the Y coordinate of the second stroke.
2"tV& is determined. The other X and Y coordinates of the first stroke and the X coordinate of the second stroke are "0".

Furthermore, if the character is lii, the feature is set based on the distance between the starting point and the ending point of the stroke. Furthermore, the standard no-no-turn memory 18 is provided with 7 lag memories for each character, and ``1'' is stored in the flag memory of the bar quasi-no-parable turn whose number of strokes matches the input data. It has become.

By the way, since you trace the top of the key with your finger L, ll1t
You end up pressing multiple keys.

Therefore, in this embodiment, the color and direction characteristics are detected only when three or more keys are pressed in the X or Y direction.

Next, the operation of the above embodiment will be explained. i! 'tjl! To do this, specify υ mode li using the "mode" key 1, but the manual key processing in this case is the same as before, so
The explanation of its operation will be omitted.0 When performing handwritten input, specify mode 2 using the "Mode" key I,
Set to matrix input mode. And handwritten input s4
Characters are manually drawn by tracing the keys with a finger on the keys arranged in a matrix of 9.5 x 6.

For example, let's input 3- as the letter t-A to make it 9. Figure 5 (,) shows the key operation position in the first stroke when inputting the above letter M by tracing it with a finger.
b) is the same key operation order in the second stroke (@
) shows an example of the key operation order in the third stroke. By the above key operation, the coordinate data is output from the gear unit 11 in FIG. 2, and is written into the input cover turn memory 2. For example, in the first stroke shown in FIG. data (1,3)
, the ■ key has coordinate data (2, 3), the ■ key has the coordinate data (a, 3), the ■ key has the coordinate data (a,
*] is output. The coordinate data for the upper, , and V positions are written into the input turn memory 2 in units of one stroke. And 1. If the next key is not pressed for a predetermined period of time, the manual character M is processed according to the flow shown in Figures #&6.

As shown in FIG.

t, the stroke number extraction block JJVC given input/old turn is j! EK: Stroke feature extraction pro, sent to ri15, step #I6, f8. As shown in the figure, X-direction stroke/feature extraction is performed, and Y-direction stroke % mold extraction is performed in the 8th stage. For the above-mentioned fine extraction of the stroke percentage in the vertical and vX directions, it is laid down in the furrow 1. Stesif 8 above. ,8. The feature extraction shown in is repeated as many times as the number of strokes of the input character,
The extraction result is written to the stroke percentage scale 1i. Thereafter, the process moves to step S4 and stroke number matching is performed. That is, the matching knob 11 performs a match comparison between the number of input characters held in the ridge grid 14 and the number of each character stored in the standard pattern memory 111Ic, and For the character, 7 lag @ 1" is set in the flag memory in the standard pattern memory 18. Next, proceed to Step S, and for the character for which the flag 11# is set in the flag memory, the stroke characteristics are obtained from the base memory 11. Sequential successive stroke feature memory 1#
Find characters with matching stroke characteristics by comparing them with the stored contents. The details of the stroke percentages and strokes of the above-mentioned 8 techniques will be described later. And above 1. After finishing the checking process, proceed to Step 8@, and move to Step 8. It is determined whether the number of matched characters is one or two or more. If it is one character, that character is determined as the input character, so the character recognition process at- ends, but 2
If it is more than characters, proceed to step 81 and select the starting point,
In addition to extracting the direction feature of the end point, feature matching of the start point and end point is performed using the step S to determine input characters in a rutted manner. The details of step S1 will be described later. After the input character is recognized as described above, the character/enerator 111
t access to generate a dot tree 7 and display it on the display section 1.

Next, the Stella f8. The details of the X-direction feature extraction will be explained with reference to chart 70 in FIG. When performing stroke feature extraction in the X direction, the matching f4V 11 first performs
The X coordinate Km-1 of the 9 key pressed before the oath is subtracted from the 9 key pressed l@ from the 9 key, and the difference value D+t- is stored.

Next, as shown in Stella fX, the vc difference value is stored, and the previous difference value I)I-1 is stored in Renostar D'L, -1.

Thereafter, the process proceeds to step Xs, and it is determined whether the difference value of the X coordinate between the previous key and the second key is rOJ, or in other words, whether or not they are the same -X coordinate. As a result of this judgment, gL-1
If it is "0", it is determined whether or not the values of the above-mentioned values r-IJL, ST, GX, and 'eL are "1" in the step SIF'X4. If the result of this judgment is that the LO value is not "1", the process returns to step x1 and the same process is repeated. That is, due to the processing of Stella fX, ~X,
Upside down until the X seat changes. And step xl
If it is determined that the value of p'L-1 is not "o", the process proceeds to Stellar fX, and the current difference value D and the previous difference value D are calculated.
'L-, are the same. If 07-1 is the same as ST, GUX, DERI, it means that the key was pressed three times in the Stroke special 1ilk extracted last time
It is determined whether CM-1 exists or not, and if Yf: 8, it is determined in step X1 whether or not the previous stroke of 411 kCm-t and the current stroke are the same.

Then, if the stroke feature CM and C,-m are not equal, or if the previous stroke feature C,-m is not equal in step
Let M be a stroke feature, and let the value of K bind be the key position at that time. Thereafter, the process proceeds to step XtO, where the value of N is rplJ. In addition, if the judgment result of STETSUNO X,, xs is YKg, and if the judgment result of step X is NO, proceed to step x1.
When this Stella fXl@q) process is finished, Ste, GX
Proceed to step ll, judge whether or not it is the stroke end, and if it is not the stroke end, return to step fX and repeat the same process, and when the above X direction stroke feature extraction progresses to the stroke end, This state is detected in step WfXN, and the feature extraction process ends. Although the details of Y-direction stroke feature extraction are not shown, the second and second steps are performed in the same manner as in the X-direction stroke feature extraction described above.

Next, the stroke feature matching process shown in step S- in FIG. 6 will be explained with reference to the flowchart in FIG. 4v memory 7
Check whether the 2g FN is @1#. Above F
M is the number of strokes of the standard luxury turn ON @ eye character with 7 points. The NO value is initially set to ``1'' and is removed from the standard pattern stored in the 1 location of the p1 memory 11. Then, if "l" is set in the flag F, proceed to step YsK, and enter the stroke Sa of the input character held in the stroke feature memory 1σ.
T matching! The stroke characteristics inputted to the lock 17 and read from the standard Noreen memory JI are compared in step, fY. Then, it is determined in step Y4 whether or not the above-mentioned two stroke characteristics match, and if they do not match, "0" is written in the 7th FM as shown in step Y, and the process then proceeds to step Y@. Also, if it is determined that the stroke % molds match in ST, fX4, or if it is determined that flag F is not rlJ in step Y1, proceed to step Y. Add "+l" to the value, then go to Stella fY, and then press No.
Determine whether the value is larger than the Kira 2 kata number M of the standard/quantity turn.

Nq) If the value is not larger than p, Stella fY,
Return to step 9 and repeat the same process. In other words, compare only the stroke characteristics of the character whose number of strokes is 7 lag 1r with @1" in the quick turn memory 1# and the stroke characteristics of the input character. If there is a discrepancy, 7 tsuda F,
t-0". Then, when the access t- to the eclipsing player stored in the standard turn memory 11 is completed, the judgment result of ST, 7'Y, becomes YKg, and 9, Stroke. Feature 01. Finish Chinda treatment.

Next, Stella 711 in Figure 6. The details of the direction feature extraction of the start point and end point in will be explained with reference to chart 70 in Figure #I9. First, as shown in Stella fz1 of No. 9111-), it is determined whether the recognized character oiiia is one stroke or not. If the number of strokes is two or more, the process proceeds to step 70- shown in step 9B, but if it is 1iM, the next step is step 70- shown in step 9-)IIC.

Proceed to Google ZS, this Stella fZ, now to the end of the human-powered character story OX @ Sake! from stroke start point ox@l[
K! Calculate td, subtract 70 & US car r-2J or less,
2" or more, or "-1%011", the meeting will be terminated. If the subtraction result is "-2" or less, it indicates that the distance between the start and end of the stroke has deviated by "3" or more in the direction of X-locus II r3J on the coordinates shown in Figure 3. The direction feature "3" is determined as shown in ZS. t
In addition, if the above subtraction result is "2" or more, it indicates that the direction of the stroke is the X road marker rlJ direction, so
Then, the direction feature rlJ is determined as shown in fZ4.

Also, if the above subtraction result is "r-1, o, l", the moving distance on the X coordinate of the stroke is "2" or less, so
In this case, the direction feature “0” is shown in step zI.
Determine. After determining the directional characteristics of the X coordinate, proceed to Stella/2-, subtract YmIIKl of the stroke start point from the Y coordinate of the stroke end point, and whether the subtraction result is less than or equal to "-2" or "2". Or more, r-1,0,l
”, and determine the direction %IIk of the Y coordinate in the same way as for the X@mark field and money. That is, if the above subtraction result is "-2" or less, the direction feature is "4" in Stetsuno 2 City, and if the subtraction result is "2" or more, the direction feature is "2" in Hiroste, No2-, and the subtraction result is "2". r-1, o, l”
In the case of ST, fZ, determine the direction feature rOJ. If it is 0 or more and the input character is 1 character, O ends the direction feature extraction of the start point and end point, but if it is 2 or more strokes, the direction feature rOJ is determined from Stella fZ1 to 9ai3). 7a- shown in 1! The cormorant ceremony is held.

In Masu Oni Stereo Zll, the input character 琐N x
) X coordinate x of starting point of o-ri! From M to the previous strike p-
To the starting point OXm@! Subtract '-'XL, sono subtraction result is '
−2” or less, or “2” or more, r−1, o.

1". That is, the difference between the 91st stroke and the 2nd stroke O start position is calculated using step f"Zll. If the above subtraction result is "-2" or less, Stella 7'z
tm] Direction feature "3", if the subtraction result is "2" or more O, direction 41111rlJ in star r7'ZII,
r-1,01IJOjja4t determines the direction feature rOJ at f, fZ14. It's been a while, f'1al
Proceed to lfC, subtract the X coordinate gjjM-1t of the previous stroke end point from the X coordinate Kr of the Nth stroke-2nd point,
Whether the subtraction result is "-2" or less or "2" or more, r-1
,0,I J. In other words, the 1st stroke and 21i
Find the difference in the positions of the end points. Then, if the above subtraction result is "-2" or less, the direction feature is "3" in stay7'zts, and if the subtraction result is "2" or more, stayfz
At ty, direction: 1m rlJ, subtraction result is r-1%
θ%l'', determine the direction feature rOJ, then proceed to step z1s, and Y jiIII(``r'' *
Kv"-') e (xi' tKfN-1), the direction feature is determined in the same manner as the above X coordinate, and after determining the direction feature of the Y coordinate, stay 7'
Proceed to Z s・ to determine whether the processing up to the final stroke has been completed, and if it has not been completed, proceed to step Zll.
Return to p1 If completed, start point and end point direction feature extraction t in case of two or more strokes ends. After that, the process proceeds to step 8@ in FIG. 6 to perform directional feature matching of the starting point and ending point.

The ms and method for input characters are described in the above example @
However, other methods may be used.

Furthermore, in the above embodiment, characters are entered by directly tracing the keys provided on the handwriting input section 4 with the fingers, but by covering the handwriting input section 4 with a sheet, You may also write the characters with a pen.

Furthermore, in the above embodiment, keys used for ordinary calculations and keys for handwriting input are used, but it is of course possible to use keys exclusively for handwriting input.

As described above, according to the present invention, it is possible to input a large amount of data with a small number of keys, and there is no need to provide a separate input device for handwritten input, and it is possible to use ordinary numeric keys, function keys, etc. Since it is sufficient to use exactly the same key as the above, it is possible to achieve the effect at extremely low cost.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an external front view, FIG. ～(・) is a diagram showing an example of the standard pattern stored in the standard Noreen memory, 5th
Figures (&) to (@) are diagrams showing an example of the order of keystrokes in the case of manual keystrokes, Figure 6 is a flowchart showing the input character recognition operation, and Figure 7 is the X direction in Figure 6. q! Flowchart showing details of i-mold extraction step 1f, FIG. 8 Flowchart showing details of stroke feature matching Stellag in Company 6WA, FIG. 9 (-)
FIG. 6) is a flowchart showing details of the step of extracting directional features of the starting point and ending point in FIG. 1...Case body, 2...Display section, 3...Key &
-Do, I...Handwriting input section, 11...Kill input section, 12...Input/Data turn memory, JJ...Number of strokes extraction pro, 15...Stroke feature extraction f mouth, Ri ,
17... Matching pattern memory, 18... Standard pattern memory. 9F Shioiri Suzue Takehiko 24 s4 Seki No. 5 Figure 186 @ No. 81a No. 9I1 body) s9 Figure (b,) 5B, 1.14 Showa year, month, day Commissioner of the Japan Patent Office Kazuo Sugi 1. Indication of Case Patent Application No. 57-26940 2. Title of Invention Key Human Powered Device. 3. Relationship with the supplementary IF case Applicant for the watch (144) Casio Keiki Xki Co., Ltd. 4, Agent 6, Specification subject to supplementary market, Drawing 7, Contents of amendment (1) Full text of specification attached Correct 0 ways. (2) Figure 4 of the drawing is corrected as shown in the attached sheet. (3) Correct drawing $7 as shown in the attached sheet. Description 1, name of the invention key human power device 2, claims A group of keys arranged in a matrix, and generating a human cover turn for each stroke in stroke operation according to the input characters of this group of keys. means, an input pattern memory for storing human cover turns generated by the input means;
A matching means that matches the Ii quasi-pattern memory which stores the I quasi-pattern, the input cover pattern stored in the input cover turn memory, and the Ii quasi-pattern stored in the standard pattern memory to produce an input character Wt*. A key human power device characterized by comprising: 3. Detailed Description of the Invention The present invention is a key-powered device that allows you to input characters by tracing your fingers on the keyboard as if you were writing a character! ltru. In recent years, for example, translators, electronic memos, and BAglC program #! Electronic devices such as small electronic calculators have been commercialized that make it possible to manually write the letters of the alphabet. However, since this type of electronic device requires keys for the number of characters, the number of keys increases, occupies a large area of the keyboard, and it takes time to find the desired character 0 key, making operability difficult. There was a problem with it being bad. On the other hand, handwriting input devices generally exist, but these input coordinates using electromagnetic coupling certificate tablets, pressure-sensitive rubber, etc., making the structure of the input device complicated, increasing the cost, and increasing the amount of information. There are problems in that the amount of data is large (for example, the X coordinate and Yjll coordinate are 0 to 500, etc.), a large amount of memory is required, and the processing is complicated. Calculation of K1m! To provide a key-powered device capable of performing handwritten input using a small number of keys using a numeric keypad, function keys, etc. DESCRIPTION OF THE PREFERRED EMBODIMENTS A case in which the present invention is implemented in a small electronic calculator will be described in detail below with reference to the drawings. FIG. 1 shows the external configuration, in which a display section 2 and a keyboard 3 are provided on the upper surface of the case main body IO. The display section 2 has two upper and lower stock display sections 2g and 2b using, for example, a liquid crystal display element, and includes 5 x 7 dots, numbers from θ to 9, alphabets from A to 2, shi, shi, etc. -,
The keyboard 3, which is arranged in a x6 matrix and constitutes the handwriting input section 4, is turned on. Turn off r ON J, [OFF J key, rAc
J (All-Clear) key, "C" (Clear) key, rMEMo-J key for electronic memo, T "↑""↓" key to display the stored contents of electronic memo, and " to switch between mode 1 and mode 2. It is equipped with a mode key 5. Mode 1 above is a calculation mode, and each key has its original function.
Furthermore, mode 2 is a matrix input mode, in which handwritten characters can be input from the handwritten input section 4. Therefore, in this matrix input mode, by tracing the 5 x 6 keys of the handwriting input section 4 with your finger, you can
~9 numbers, A~2 alphabets% “I””
You can input and display operation symbols such as I×)÷. Then, by pressing the MEMOJ key K, the character data being displayed is stored in the electronic memo.Also, since the characters input by hand are wAm in the internal circuit, for example r5+2=,J), the character data being displayed is stored in the electronic memo. It is also possible to perform calculations by using the numbers and operation symbols of the cigarette.Next, the configuration of the electronic circuit provided in the case body 1 will be explained with reference to FIG. 2. is a functional block diagram for explaining the tying function in the matrix input mode, and parts related to calculation functions, electronic memo functions, etc. are omitted.In Fig. 2, No. 1 is the key human power section; I for the key operation of the keyboard 3 in FIG.
key human data is generated at the same time. That is, the key input unit 11 generates a code for the original function of each key in the calculation mode, and generates the coordinate gator of the operating keys in the handwriting input unit 4 in the matrix input mode. Of course, a normal key code is generated from the pressed key, but the key code is converted and coordinate data is created and output. The pattern data is sent to the input pattern memory 2 and stored as pattern data. The pattern data stored in the input pattern memory 2 is sent to the stroke number extraction block 13, where the number of strokes is extracted and stored in the stroke number memory 4, and furthermore, the stroke feature is extracted to the stroke feature extraction block 15. (1) are stored in the stroke feature memory 6.The number of strokes and stroke features of the input character stored in the stroke number memory 4 and stroke feature memory 6 are stored in the matching block I.
7 and is compared with a standard pattern successively read out from the quasi-pattern memory I8. The standard pattern memory 18 stores character characters in the order of the number of strokes, stroke characteristics for their standard patterns, and directional characteristics for characters having the same standard pattern. A matching block 11 sequentially reads the stroke features of a standard pattern having the same number of strokes as the number of strokes written in the stroke number memory 14 from the standard pattern memory 18, and compares them with the stroke features of the input cover pattern to perform character g recognition. Note that if there are a number of characters having the same stroke feature, the direction feature of the input pattern is extracted in the stroke feature extraction block 15 and stored in the stroke feature memory 16, and the direction feature and the standard pattern memory 18 are stored in the stroke feature memory 16. The matching block 1r again compares the directional characteristics of the standard pattern read from the character 11. Then, the matching block 17 accesses the character generator 1g according to the written characters,
A dot pattern is generated and displayed on the display section 1. The above-mentioned stroke feature 1 indicates the direction and time order of strokes in character input. In other words, as shown in the third factor, the direction of the stroke is +X of the x-X coordinate.
Direction is rtJ, -X direction is "3", 10Y direction is "2",
-Y direction is defined as r″4″ direction. Then, the above-mentioned stroke characteristics are set for each character according to the number of strokes, and are stored in advance in the standard pattern memory Ig as a standard pattern. For example, Alphabella) (2) If it is the letter A,
The case of writing in 21 m as shown in FIG. 4(a) and the case of writing in three strokes as shown in FIG. 4(b) can be considered, so standard patterns are set for each case. 2
When drawing a person by drawing, the standard pattern memory 18 contains the fourth
"2" is written as the number of strokes of the alphabet character A in the ↓ stroke number memory sIB& shown in FIG. This stroke characteristic memory m1llb can store two digits of data for each metro line, and the upper digits store data indicating the X and Y directions, and the lower digits store data indicating changes in the direction. ing. Then, in the two-stroke A, in the first half of the first stroke, that is, from the bottom end to the top end, the X coordinate is in the "1" direction and the Y coordinate is in the "2" direction, so write that value in the upper digit. . Also, in the first half of this first stroke, there is no change in direction, so the numerical value is written in the lower digits of "lj"ft. Then, in the second half of the #11 stroke, from the top end to the bottom end,
In the X coordinate, the direction is the same as the one and a half strokes and there is no change, so there is no additional data. However, the direction in the Y coordinate is "4"
Since the direction changes, following the data “2” write “4” in the first digit, and write “2” in the second digit to indicate the change in direction.
” is included. Since the first stroke ends here, a stroke end mark is written next. and,
In the second stroke, since there is no change in the Y coordinate, a game with direction "1" and direction change "1" is written only for the X coordinate. This completes the strike award feature for the person 2i11, so write the character end mark following the second stroke data.In addition, in the case of the person 3ii1j, as shown in FIG. 4(b), titii number memory s1
When the number of strokes "3" is written in a m, stroke features are set in the stroke feature storage section 111b in the same manner as in the above case and PJ. That is, in the first stroke, the X coordinate is in the "3" direction and the Y coordinate is in the "4" direction, and since there is no change in direction, the values are both "1".For the 2nd stroke, the X coordinate is "l". The direction, Y coordinate is 14'' direction, and the direction change value is ``l''.
It is. In the third stroke, xm* is in the rlJ direction, and the direction change value is "1". Note that in the third stroke, y
There is no deviation of s*O''' In the same way, the number of strokes and stroke characteristics for other symbols (letters of the alphabet, numbers, +, -, X, tens, etc.) are stored in advance in the standard pattern memory 18. Note that some of the above standard patterns have exactly the same pattern depending on the characters. For example, as shown in Figure 4 (,), in the case of the letters "D" and "-P", the number of strokes and the stroke characteristics are exactly the same. Therefore, for such characters, compare the distance between the start point and end point of each stroke and the next stroke, and if the difference is 12" or more, add a direction feature and use the direction of the standard pattern memory #. For example, in the case of "D", the #Il stroke and the JI2 stroke are the starting points, as shown in FIG. 4(d). Since the end points are at the same location, the direction feature is XJI
The Im and Y coordinates are all "0". Further, in the case of "P", as shown in FIG. 4(-), the starting point of the first stroke and the Ji2 stroke are at the same position, but the ending points are at different positions. That is, since the end point of the second stroke is away from the end point of the first stroke in the "2" direction only at the Y mark, "2" is set as the direction feature only in the Y coordinate of the second stroke. The x and Y coordinates of the other first strokes and the X** of the second strokes are "0". Furthermore, if the character is one stroke, the direction feature is set from the distance between the starting point and the ending point of the stroke. Further, the standard pattern memory 18 is provided with a flag memory for each character, and 11# is stored in the flag memory of the standard pattern whose number of lll1 matches the input data. , because you are tracing the top of the key with your pusher, you end up pressing multiple keys at once. Therefore, in this example,
When three or more keys are pressed in the direction or Y direction,
The direction feature is detected for the first time 0 Next, when performing the 0 calculation to explain the operation of the above embodiment, specify 1 remote 1 in the "mode" key 5, but in this case the key manual processing is the same as before. Since they are similar, a description of their operations will be omitted. When performing handwritten input,
Specify 1 remote 2 to the "mode" key 5 to enter matrix input mode. Then, the user inputs characters by tracing the keys provided in the handwriting input unit 4, that is, the keys arranged in a 5×6 matrix, with a finger. Now, for example, if the character MU is entered with the ↓ uni 3- of A and the 0 stroke 5 of T
Figure (a) shows the character L entered by tracing the letter A above with your finger.
The key operation order in the N1 stroke, (b) in the figure shows an example of the key operation order in the second stroke, and E (a) shows an example of the key operation order in the third stroke. By the above key operation, the key human power part 1 of @2 diagram is
Coordinate data is output from 1 and entered! -Nme Kamorigiri
K is folded. For example, in the f#11 story shown in Figure 5(a), the key ``■'' has coordinate data (1,3)%■
The key is the coordinate gator (2=3)%, the key is the coordinate data (2,2), the key is the coordinate data (2,2), and the key is j! The square data (L2) is output. The above coordinate data is the last O of each stroke.
The stroke end mark and the last character end mark of the final stroke are written in the input cover turn memory 12 in units of one stroke. The pattern data written in the input cover memory 11 in this case is shown in Table 1 below. Table 1 Pattern data Note that the above stroke end mark is written when the continuous key force is interrupted, and the character end mark is written when the input of the character is completed when there is no key force in the predetermined time method. Thereafter, input character recognition processing is performed according to the flow shown in FIG. First, the input cover turn stored in the input cover turn memory 12 as shown in step S in FIG. 6 is sent to the stroke number extraction block 13, and the stroke end mark and character end mark are counted. is extracted and written into the stroke number memory 14. Further, the input cover turn given to the stroke number extraction block 13 is sent to the stroke feature extraction block 15, where X-direction stroke feature extraction is performed as shown in step S in FIG. Y-direction stroke feature extraction is performed. The details of extracting the X-direction stroke feature in step S will be described later. The stroke feature image extraction in the Tx direction and the Y direction shown in step 8@e''a above is repeated as many times as the number of strokes of the input character, and the extraction results are written into the stroke feature memory 16. After that, proceed to step 8 and perform stroke number matching. That is, a matching block is used to compare the number of strokes of the input character held in the number of strokes memory 14 and the number of strokes of each character stored in the standard pattern memory 18. 17, and sets a flag "11!" in the flag memory in the pattern memory 18 for the matched character. Then step 8
゜, the stroke characteristics of the characters for which the 7 lag °l'' is set in the flag memory are sequentially read out from the standard pattern memory 18, and compared with the contents held in the stroke characteristic memory 7g, characters with matching stroke characteristics are found. The details of the stroke feature matching in step Ss will be described later.After the above matching process is completed, the process proceeds to step SI, where it is determined whether the number of characters O matched in step S- is one or two or more. If it is a 01 character, that character is determined by the input character N・7, so the character recognition process ends, but if it is 2 or more characters, proceed to step 8 and extract the directional features of the start point and end point. At the same time, the starting point is determined in step S. The characteristics of the end point are matched and the input character is finally determined.The details of step S7 will be described later.As described above, human characters are recognized. After that, the character generator 19 is accessed based on the recognition result, and a dot pattern is generated and displayed on the display screen.Next, details of the X-direction stroke feature extraction in step S! are shown in FIG. This will be explained using a flowchart. When performing stroke feature extraction in the
The initial value of T shown in step X of FIG. The value of each counter L is set to "3", and the counter M that counts the stroke characteristics of each stroke is set to "1". Next, the process advances to step ii! @KN to 1
Subtract the pressed key oxm KN, -, and store the difference in register D. 0 Then step X
As shown in s, the value of the difference value DN is stored in the corresponding portion T of the register D2 as the difference value D'L. The processing in these steps At the end of the process, all the difference values D)I and D''L for that stroke are stored in the registers D and D'.
Proceeding to step
As a result of this judgment, if D″L−1 is “0”, in step X, the above LO value is
JL, step X, it is determined whether the value of L is 12''. If the result of this judgment is not "2", return to step x4 and repeat the same process.
If it is determined that the value of the difference value D'L-1, which is different from the difference value DN, is not "0", the process proceeds to step X'1, and the current difference value DI and the above steps X4 to X are , U
If DI and D'L-1 are the same in step X, which determines whether the difference values D'L-1 obtained by IJ are the same, then the key is pressed three times in the X direction. This means that DI (if 0, then X The coordinates are “
3'' direction, so in step X. Then, add “1” to C′.
”. After executing steps X, X, and o, the process proceeds to step Xll, where it is determined whether or not the stroke feature extraction in the current stroke pattern data is the first one. That is, it is determined whether the value of the counter M that counts the number of features in each stroke is "l", and if NO, step X1. Previous stroke feature C
It is determined whether IIM-+ and current stroke special @c' are the same. Then, if the stroke features C' and C1 are not equal, or in step Xll, M
If it is determined that = 1, the process proceeds to step
Store it in the th position. Then, after incrementing the value of M by "+1" in step X14, step X3. Proceed to , and set the above NO value to: +IJf. Note that step X・ ,X,
! Judgment: If the conclusion is YES or if the result of step x, O judgment is NO, proceed to step x4. Then, when this step x and IO processing are completed, the NO value is stored in L in step X and 6, and step X,)
Proceed to and determine whether KN is at the stroke end,
If it is not the stroke end, proceed to step X1m,
Step x1 to determine whether KN is the character end or not. If it is determined that the character is not at the end, return to step X+ and repeat the same process.
Also, step x3 above. When it is determined that KN is at the stroke end, proceed to step X II.
After specifying the pattern data of the next 8'+1 stroke, return to step Then, at step X+a, KN is determined to be the character end, and X
The extraction operation of the directional stroke feature is completed, and the process proceeds to step S in FIG. Although the details of the Y-direction stroke feature extraction in #I6-step Ss are not shown, it is almost the same as the case of the X-direction shown in FIG.
In addition to reading the coordinate data in the Y direction, "2" and "4" are written as stroke characteristics in the Y direction in steps X1 and X+a+ in FIG. 7, respectively. The stroke feature matching process shown in step S of FIG. 6 will be explained with reference to the flowchart of FIG. 8.゛First, as shown in step Y, the standard pattern memory zgl is accessed, and the flag memory storage 7 lag F) Checks whether I is l#. This is a character stroke count determination result flag. The above NO value is "1-1" at first, and the memory 1. ,．． From the standard pattern stored in address 1 of 8, 11 is checked, and if "1" is set in fract, the process advances to step Y2, and the input character held in the stroke feature memory 16 is checked. The stroke features are input to matching block IF and compared with the stroke features read from standard pattern memory 1# in step Y. Then, in step Y, it is determined whether or not the above two stroke characteristics match.
If there is a discrepancy, step Y, step 7 as shown in T.
Write “0” to 2gFN, then step Y-)
move on. Also, if it is determined in step Y that the stroke features match, or if it is determined in step Y1 that the flag FN is not "1", step Y.
Proceed to. In this step Y, add r+IJL to the value of N, then proceed to step Y and set N. It is determined whether the value has increased by the number of characters M in the standard pattern. If the NO value has not become larger than M times, return to step Y1 and repeat the same process.
Only the key 2 key Q stroke feature for which l# is set is compared with the input character O(s) a-ri feature, and if there is a mismatch, the flag FNt@0" is set. Then, it is written to the standard pattern memory 18. When access to all characters stored in the program is completed, the judgment result in step Y becomes YE.
S, and the stroke feature matching process ends. Next, details of the extraction of the direction characteristics of the starting point and ending point in step S7 of FIG. 6 will be explained with reference to the flowchart of FIG. The above step S is a struggle that is executed when character recognition cannot be determined to one character due to matching of stroke features. First, step 2 of #9 #A (凰)
．． The one shown in la! It is determined whether the number of strokes of the written character is llmj. If the number of strokes is 2- or more, the 9th
The process proceeds to step p- shown in Figure (b), but in the case of one stroke, #
! 9 (a) shows the T flow (and then proceeds to the next step 2R. In this step 2., from the input character's stroke end point X@@: to the stroke start point X *X;
, and the result of the subtraction is less than or equal to -21 or 2.
It is judged whether it is above or r-1,0,IJ. If the subtraction result is 1-2" or less, this indicates that the distance between the start and end of the stroke has deviated by 3 or more in the 0X1111 "3" direction on the coordinates shown in Figure 3. Also, if the directional feature "3" is set legally as shown in step z1,
If the above subtraction result is ``2'' or more, it is 0 indicating that the direction of the stroke is the X coordinate rlJ direction, and the Ol However, if the above subtraction result is r-1#0tlJ, the moving distance on the X coordinate of the stroke is "2" or less, so in this case, as shown in step zs, the direction characteristic 1 kr
After determining the direction characteristic g of xis, proceed to step z6 and move from the stroke end point Y position [iK: to the stroke start point Y position II K:
0 Ding, that is,
If the above subtraction result is "-2" or less, the direction feature is "4" in step Z, and if the subtraction result is "2" or more, step 2. In direction feature r2. J, the subtraction result is r-
For t, o, xJ, step 2. The direction feature r
Determine OJ. This completes the extraction of the direction feature of the starting point and ending point when the input character is 1 iji, but when the input character is 21 m or more, processing is performed according to the flow shown in FIG. First, in step Zll, subtract the previous stroke start point X 11 x:N-1 from the Nth stroke start point x m lIx: )l of the input character, and check whether the subtraction result is "-2" or less. "2" or more, r-1,0,IJ
to judge. In other words, in the above step Zll
Find the difference between the start position of the second stroke and the second stroke. Then, if the above subtraction result is "-2" or less, step 211
If the subtraction result is 21 or more, the direction feature is "l" in step z1s. In the case of r-t, o, and IJ, the direction feature "0" is determined for the steering wheel and the knob zμ. Next, proceed to step zti, subtract xm*Σr1 of the previous stroke end point from the X coordinate K1m1 of the Nth stroke end point, and determine whether the subtraction result is less than "-2", more than "2", or r-1yOtiJ. to judge. That is, the difference between the positions of the 11th and 21m end points is determined. And the above subtraction result is "-2"
In the following case, the direction feature "3" is set in step z1,
If the subtraction result is "2" or more, step Z l? , the direction feature Flu, the subtraction result is F' ls O# i
In the case of J, the direction feature "0" is determined. After that, the process advances to step z1 and the Y coordinate (KIN, K"-'
). ("r" y K:"-') K':) I'C"
, the direction feature O is determined in the same manner as xma above. After determining the above-mentioned Y seat @ 0 direction characteristics, proceed to step 2m and judge whether or not the processing up to the final stroke has been completed. If not, return to step Z II", and if completed, proceed to step 211 or higher. The starting point in the case of . End point direction feature extraction T0 After that, proceed to step 8- in Fig. 6 and perform starting point and ending point 0 direction feature matching. It is not limited to the above embodiment, and other methods are also possible.In addition, in the above embodiment, characters are entered by directly tracing the keys provided in the handwriting input section 4 with a finger. but,
A sheet may be placed over the handwriting input section 4 and characters may be written on the sheet with a finger or a pen. Further, in the above embodiment, the key used for ordinary calculation Km and the key for handwriting input are used, but it goes without saying that the key may be used exclusively for handwriting input. As described above, according to the present invention, it is possible to input a large amount of data with a small number of keys, and there is no need to use a special input device for handwritten input. Since it is sufficient to use exactly the same key as the key, it is effective in that it can be realized at an extremely low cost. 4. Brief description of the drawings The drawings show one embodiment of the present invention. Fig. 1 is an external front view, Fig. 2 is a functional pull-out diagram, and Fig. 3 is a coordinate diagram.
W-A diagram showing the evening direction, 4th all (a) to (,) are diagrams showing examples of standard patterns stored in the standard pattern memory,
@ 5 E (a) to (c) are diagrams showing an example of the order of keystrokes in each step when manual keystrokes are performed, and diagram ea is a 70-Thayat, jli7 diagram showing the li weaving motion of input characters. is a flowchart showing details of the X-direction feature extraction step in FIG. I6), FIG. 98 is a flowchart showing details of the stroke feature matching step in FIG.
FIGS. 9(a) and 9(b) are flowcharts showing details of the step of extracting directional features of the starting point and ending point in the @ diagram. DESCRIPTION OF SYMBOLS 1...Case body, 1...Display part, 3...Keyboard, 4...Handwriting input part, 11...Key manual part,
12... Input cover pattern memory, 13... Stroke number extraction block, 15... Storry feature extraction block, 1r
...Matching pull, 18...Standard pattern memory. Applicant's agent Benenshi Suzue Takeshi Hikosai 4 figures x Y Y 6C

Claims (1)

[Claims] A group of keys arranged in a matrix, a means for generating an input/amount turn in units of p strokes by a stroke operation corresponding to input characters of this group of keys, and an input arm turn generated by this input means. The input cut 4-turn memory to be memorized, the standard f-turn memory which memorizes the standard and arm turns, the input cover turns stored in the human power and 9-turn memory, and the standard no-lean stored in the standard and bend turn memories. 1c. A key-powered device characterized in that it is equipped with a matching device that performs matching of input characters t-g*.