JP2925140B2 - Character processing method and apparatus - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character processing method and apparatus for aligning and displaying input character strings. 2. Description of the Related Art Conventionally, a character processing method and apparatus for handling mathematical expressions, character strings, and the like generally include a coordinate input unit for inputting characters such as numbers and symbols to be entered in coordinates, and a coordinate input from the coordinate input unit. And means for displaying written characters, such as numbers and symbols, at the position. [Problems to be Solved by the Invention] However, in the above-described conventional technology, only characters are displayed at the position of the coordinates input by the coordinate input means, and other characters already displayed are taken into consideration. Therefore, since a series of entered character strings were not arranged and displayed in a beautiful arrangement, the character writer must write each character in a beautiful arrangement while considering the beautiful arrangement, and when inputting The burden of was large. [Means for Solving the Problems] In order to solve the above problems of the conventional technology, the present invention provides:
An information processing method in an information processing apparatus comprising: display means for displaying an image; and coordinate input means for designating desired position coordinates on the image display means, wherein a character string input by the input means is Holding the input position coordinates of each of the characters to be composed, determining the reference point coordinates for aligning and displaying the input character string in a predetermined direction based on the held input position coordinates, Aligned character data representing the relative position of each character when the column is aligned and displayed on the display means is created, and the display position coordinates of each character are obtained by adding the aligned character data to the determined reference point coordinates. By comparing the obtained display position coordinates with the character position coordinates of another character string already aligned and displayed, there is another character string already aligned and displayed at the position coordinates where the character is displayed. If it is determined that there is another character string that is already aligned and displayed at the position coordinates where the character is displayed, a predetermined value is added to the determined reference point coordinates and a new value is added. After determining the reference point coordinates, there is a process of obtaining the display position coordinates of each character using the new reference point coordinates, and there is another character string already aligned and displayed at the position coordinates for displaying the characters. And if the determination is that there is no other character string already aligned and displayed at the position coordinates where the character is displayed, the reference point coordinate determined at that time and the alignment A character processing method for aligning and displaying the input character string in a predetermined direction based on character data is provided. In order to solve the above problems of the prior art, the present invention provides:
An information processing apparatus using display means for displaying an image and coordinate input means for designating desired position coordinates on the image display means, wherein each character constituting a character string input by the input means is provided. Holding means for holding the input position coordinates, and reference point coordinate determination for determining the reference point coordinates for aligning and displaying the input character string in a predetermined direction based on the input position coordinates held in the holding means. Means for creating aligned character data representing relative positions of respective characters when the character string input by the input means is aligned and displayed on the display means; and determined by the reference point coordinate determining means. Display position deriving means for obtaining the display position coordinates of each character by adding the aligned character data to the set reference point coordinates, and display position coordinates obtained by the display position deriving means. Determining means for comparing with the character position coordinates of another character string displayed in a column to determine whether or not there is another character string already aligned and displayed at the position coordinates for displaying the character; If the determining means determines that there is another character string already aligned and displayed at the position coordinates where the character is displayed, a predetermined value is added to the determined reference point coordinates to determine a new reference point coordinate. Thereafter, control is performed to perform processing by the display position deriving unit and processing by the determining unit using the new reference point coordinates,
And when the determination means determines that there is no other character string already aligned and displayed at the position coordinates for displaying characters, the input character is determined based on the reference point coordinates determined at that time and the aligned character data. Provided is a character processing apparatus having control means for controlling the displayed character strings to be arranged and displayed in a predetermined direction. [Embodiment] FIG. 1 is a configuration diagram showing a configuration of a mathematical formula processing which is a feature of the present invention. Reference numeral 1 denotes an input / output block.
And an output unit 13. 2 is a processing block,
It is composed of handwritten character recognition means 21, mathematical expression recognition means 22, arithmetic means 23, equation display position determination means 24, answer display position determination means 25, and display control means 26. Reference numeral 12 denotes an input unit, which is a transparent input panel in which transparent electrodes are stretched vertically and horizontally, and an input pen 11
Is pressed to input coordinate data. The coordinate data is sent to the handwritten character recognition means 21. Reference numeral 13 denotes an output unit which is composed of a liquid crystal display and a VRAM, and displays characters such as numerals by the display dot coordinate data sent from the display control means 26. Reference numeral 21 denotes a handwritten character recognizing means, which is one of numerals and other characters sent from the input unit 12.
Receiving the coordinate data of the pen of the character and recognizing it by a recognition method such as a conventional stroke recognition method,
The character code, character position, and character size are obtained and sent to the mathematical expression recognition means 22. Numeral 22 is a formula recognition means.
The code of the character sent from the handwritten character recognition means 21 by the method described in the specification of No. 194311, the position of the character,
Recognition of the mathematical expression is performed according to the size of the character, the character string of the mathematical expression is sent to the calculating means 23, and the aligned character data is sent to the expression display position determining means 24. Reference numeral 23 denotes arithmetic means, which also depends on the character code, character position, and character size sent from the handwritten character recognition means 21 according to the method described in the specification of Japanese Patent Application No. 62-199431. After recognizing the mathematical expression, the character string of the mathematical expression is sent to the arithmetic means 23, and the aligned character data is sent to the expression display position determining means 24. 23 is arithmetic means,
This also calculates the character string sent from the mathematical expression recognizing means 22 according to the method described in the specification of Japanese Patent Application No. 62-199431, and outputs an answer to the answer display position determining means 25. Numeral 24 is a formula display position determining means, which determines whether the formula does not overlap with another formula or does not protrude from the screen on the basis of the sorted formula character string data sent from the formula recognizing means 22. The formula display position is determined, the determined formula character string data is sent to the display control means 26, and the position data of the equal sign is sent to the answer display position determining means 25.
Numeral 25 is an answer display position determining means, which is determined from the answer sent from the arithmetic means 23, the position of the equal sign sent from the expression display position determining means 24, and the position of the equal sign inputted from the handwritten character recognition means. The position of a typical answer is determined, and the character string of the answer including the equal sign is sent to the display control means 26. Reference numeral 26 denotes a display control means, which creates display dot coordinate data based on the character code, character position, and character size data sent, and sends the data to the liquid crystal display 13 to display the characters. Second
The figure is a block diagram of the present embodiment. Reference numeral 31 denotes a coordinate input unit, which is a transparent input panel in which conventional transparent electrodes are stretched horizontally and vertically, and coordinate data is input by pressing with a pen 11. Coordinate data is handwritten character recognition means
Sent to 21. Reference numeral 21 denotes a handwritten character recognizing means, which performs character recognition by a conventional stroke recognition method based on the coordinate data of one character sent from the coordinate input unit 31, and performs character code, character position, and character size. Is sent to the central processing unit 32. Reference numeral 32 denotes a central processing unit, which is hereinafter referred to as a CPU.
It has a ROM 32a for storing the processing procedure performed in the flowchart of FIG. 12 and a RAM 32b for storing data to be processed, and processes the data sent from the handwritten character recognition means in accordance with the processing procedure of the ROM. Then, display data is output to the display control means 26. 26 is a display control means, which is a CPU 32
The display dot coordinates data is created based on the character code, character position, and character size sent from the printer, and output to the liquid crystal display unit 13. Reference numeral 13 denotes a liquid crystal display unit, which is composed of a liquid crystal display and VRAM, and 26 displays characters such as numerals in accordance with display dot coordinate data sent from the display control means. FIG. 3 is a diagram showing the data structure of mathematical formula data stored in the RAM 32b. FIG. 4 is an example of a display screen, where 41 is the first character of the formula and 42 is the second character of the formula. . The X and Y coordinates of A are x (1) and y (1), and the X and Y coordinates of B are x (1)
+ Dx (1), y (1) + dy (1), the X and Y coordinates of C are x (2) and y (2), and the X and Y coordinates of D are x (2) + dx
(2), y (2) + dy (2). code (1) represents the character code of the first character of the first expression, and is represented by two bytes of a general ASCII code and a code representing the size of the character. x (1) represents the X coordinate of the display position of the first character, and when represented on the display screen of FIG. 4, if 41 is the first character, it is the X coordinate of A. y (1) represents the Y coordinate of the display position of the first character, and is the Y coordinate of A of the first character 41 in FIG. dx
(1) represents the horizontal size of the first character, and x (1) +
dx (1) is the X coordinate of B of the first character 41 in FIG. dy
(1) represents the vertical size of the first character, and y (1) +
dy (1) is the Y coordinate of B of the first character 41 in FIG. co
Each of de (1), x (1), y (1), dx (1), and dy (1) is composed of 2 bytes, one character data is composed of 10 bytes, and is behind dy (1). Has the second character code,
code (2) is stored. After the second character dy (2), the end of the expression code7FFF is stored, indicating the end of the data of the first expression, and after the end of the expression code, the character code of the first character of the second expression code (3) Is stored. in this way,
Expression data is stored and the end of the last expression data
After the code, a formula terminating code (0000) is stored. FIG. 5 is an example of a display screen. 51 to 59 are the display characters of the first formula that have already been calculated, 60 to 63 are the display characters of the second formula currently being input, and the data is the third.
It is stored in the RAM 32b as shown in the figure. FIG. 6 is an example of a display screen. As a result of inputting the second expression as shown in FIG. 5, by performing the processing of the present invention, the characters from 60 to 63 are aligned and 64 answers are displayed. Is done. FIG. 7 is an example of a display screen. The first from 71 to 75 has already been calculated
Expressions are displayed. Expressions 76 to 78 are expressions of the second expression that has already been calculated. Expressions 80 to 87 are expressions of the currently input third expression. FIG. 8 is an example of a display screen, and FIG.
As a result of inputting the third expression as shown in the figure, by performing the processing of the present invention, the characters from 80 to 86 are aligned, and when the equal sign and the answer are displayed from the right of 86, they run off the box. For this purpose, the characters 88 and 89 of the answer are displayed from the right of the input equal sign in FIG. 87 by performing the processing of the present invention. FIG. 9 is a flowchart showing the procedure of the process of the present invention. FIG. 10 is a flowchart for explaining the details of the processing in step S95 in FIG. FIG. 11 is a view showing the arranged mathematical expression data sent to the mathematical expression recognizing means 22. FIG. 12 is a flowchart for explaining the processing in step S97 of FIG. 9 in detail. In the above configuration, the processing operation will be described with reference to the flowcharts of FIGS. 9, 10, and 12. Fig. 9 Step
In S91, the code of the character, the position of the character, and the size of the character are sent from the handwritten character recognition means 21, and the data of the character are sequentially stored in the RAM 32b in the data structure shown in FIG. When the character of the equal sign is input, the input of one expression is terminated, the character data of the equal sign is stored in the RAM 32b, the end of the expression code7FFF is stored, and the processing in step S91 is completed. In step S92, the head address of the equation storage location is given to the equation recognition processing, and the equation recognition is performed. Given the start address of the data of the expression stored in the RAM 32b, character data from the start address to the expression end code is one expression, and the character data is aligned when the expression recognition process is performed. Column data is output. The second shown in FIG.
When the formula data 60 to 63 are input and the above-described formula recognition process is performed, the character string data of "3 + 6" is calculated in step S93.
And the data shown in FIG. 11, which is the sorted character string data, is output. X in the leftmost character of the expression
(1), y (1) is 0,0 and the next character x (2), y
(2) is x (1) + dx (1), y (1), and the next character x (3), y (3) is x (2) + dx (2), y (1). In step S93, a process of inputting an output character string as a result recognized by the mathematical expression recognition means, performing an arithmetic process, and outputting an answer is performed. When the character string data of “3 + 6” is input,
Performs the operation and outputs the answer "9". In step S94, the answer is stored at a specific address in the RAM 32b, and an output character END code 00 representing the end of the answer is stored at the end of the answer. In step S95, a formula display position determination process is performed on the basis of the output character strings arranged as a result of the recognition by the formula recognition process to determine a formula display position. This process will be described in detail with reference to the flowchart of FIG. In step S101, the minimum x coordinate and the minimum y coordinate among the characters of the expression to be processed are obtained and stored. First, x (1) and y (1) of the first character of the expression are respectively
Reference point coordinates of the display position of the expression at a specific address in the RAM 32b are stored in MX and MY, respectively, and each of the MX and MY is stored in x (2), y (2),... X (n). , y (n) until the last character of the expression is smaller than MX and MY
When x and y exist, their values are stored in MX and MY, so that the minimum X and Y are stored in MX and MY. In the equation of FIG. 5, 60 x, y data are stored. In step S102, the output character string
The start address of the storage location on the RAM32b is the P of the specific address of the RAM32b.
To memorize. In step S103, the position coordinates of the characters to be aligned and displayed are obtained. The display position of the aligned expression is obtained by adding the data of the aligned character string to the reference point coordinates of the display position of the expression stored in the specific address MX, MY of the RAM 32b. Display of the x-axis of the character by adding the value of the X-coordinate of the aligned character data (the value of the X-coordinate of the character data at the address stored in P) to the value of the X-coordinate of the reference point with MX + P [x] Find the position coordinate x and use the same as above for MY + P
In [Y], the display position coordinate y on the y-axis of the character is obtained, and P [dx] and P [dy] of the aligned character data are dx and dy, respectively. In step S104, it is determined whether there is any character in another expression at the display position of the character obtained in step S103. If there is another expression, the process proceeds to step S108, and if there is no other expression, the process proceeds to step S105. . Determined in step S103
x, y, x + dx, y + dy which is the display area of the character from x, y, dx, dy
Is determined, and by comparing with character data of another expression stored in the RAM 32b, it can be determined whether the character overlaps with another expression. In other words, the data of the other expressions are xn, yn, dxn,
Assuming dyn, xn ≦ x + dx and nx ≧ x or xn + dxn ≧ x and xn +
dxn ≦ x + dx, where yn ≦ y + dy and yn ≧ y or yn + dyn ≧
If y is yn + dyn ≦ y + dy, it is heavy, otherwise it is not heavy. In step S105, it is determined whether the display position of the character exceeds the display area. If it exceeds the display area, the process proceeds to step S109. If it is within the display area, the process proceeds to step S106. Assuming that the display area is 640 × 400, x + dx> 640 or y + according to x, y, dx, dy obtained in step S103.
If dy> 400, it exceeds the displayed device, otherwise it is within the displayed device. In step S106, the pointer P of the alignment character
Is added to make the address of the next character. As for the data of the alignment character, the data of one character is the same as the structure of Fig. 3 and it is one character data with 10 bytes. Make it a data storage address. In step S107, it is determined whether or not the data of the aligned character is the end or not. That is, P
Determines whether the contents of the address that can be represented by the contents of the output character is the output character END symbol, which is the output character END, that is, 7FFF. ing. If it is not the output character END, the process proceeds to step S103 to continue the processing. That is, by continuing the loop from step S103 to step S107, it can be determined whether or not all the data of the aligned characters can be displayed without overlapping with other formulas and without protruding from the display box. Step S1
In step 08, when it overlaps with another expression, a process of adding the reference coordinate Y of the display expression to shift the display position is performed, and the flow advances to step S102. 8 is added to the contents of the specific address MY of the RAM 32b storing the reference coordinates Y of the display formula. In step S109, the main routine shown in FIG. In step S105, when the display characters exceed the display area, there is no position for displaying the aligned expressions, so the processing of FIG. 10 is terminated, and the processing returns to the main routine without being aligned. In step S96, the equation is displayed at the position determined in step S95. That is, the expression is displayed at the position of the reference coordinates MX and MY of the display expression determined in step S95.
When there is an input of 60 to 63 in the figure, the expressions are arranged and displayed at the positions of 60 to 63 in FIG. In step S97, the answer is displayed from the right of the position of the equal sign determined in step S95, and it is determined whether the answer overlaps with another expression or does not exceed the display factor. Step S97
This process will be described in detail with reference to the flowchart of FIG. In step S121, the data xe, ye,
A process for storing dxe and dye is performed. That is, the display position of the equal sign determined in step S95 is stored in the specific address x, xe, ye, dxe, dye of the RAM 32b. In step S122, the start address of the answer character string is stored in P, which is the storage address of the answer character string. Ie RAM3
The character string of the answer is stored in P which is the specific address of 2b
The specific address of the RAM 32b is stored. In step S124, the X coordinate of the display position of the answer is obtained. That is, since the x stored in step S121 is the display X coordinate of the equal sign, the width dx of the character of the equal sign is added to the content of x (x
← x + dx) to determine the position of the right of the equal sign, and use that position as the display position of the answer. In step S125, it is determined whether there is another expression at the display position of the answer. If there is another expression, the process proceeds to step S128, and if there is no other expression, the process proceeds to step S126. The above determination method is step S1
Do the same as in 04, if there is no other expression character at the position of x, ye, x + dxe, ye + dye. In step S126, it is determined whether or not the display of the answer exceeds the display error, and if it exceeds the display error, step S128 is performed.
If it is within the display area, the process proceeds to step S127. It is determined whether or not x + dx, which is the right end of the answer display position, exceeds the display area. That is, if 640 × 400 is the display area and 640 is the maximum value of the x coordinate, x + dx> 640 may be determined. In step S127, the contents of P, which is the storage location of the storage address of the answer character string, are added to make the address of the next character of the answer character string. Since the character string of the answer is ASCII code, 1
Since one character is represented by a byte, adding 1 to the content of P results in the next answer data. Upon completion of the process in the step S127, the process proceeds to the step S123. In step S123, it is determined whether or not the content of the address of the content of P which is the storage location of the storage address of the character string of the answer is the end of the answer. If the answer is the end, the process ends because all the answers can be displayed, and if not, the process proceeds to step S124 because there is still a character string of the answer. It is determined whether the address of the content of P at the specific address in the RAM 32b is the end code 00 of the answer. In step S128, the display position of the answer is set in step S91.
Is stored so as to be displayed from the right of the position of the equal sign input in. XMe, yMe, dxMe, dyMe, which is the input position data of the equal sign stored at the specific address of the RAM 32b, are displayed in the RAM 32 of the answer display position.
The data is stored in the storage location xe, ye, dxe, dye at the specific address b, and the process is terminated. Then, the process proceeds to step S98. In step S98, the answer is displayed from the display position xe, ye, dxe, dye of the answer determined in step S97. That is, the answer is displayed from the right of the equal sign as performed in the process of step S125. By performing the processing as described above, the fifth
When input as shown in the figure, the result becomes as shown in FIG. 6, and when input as in FIG. 7, the result becomes as shown in FIG. Formulas that are sorted by formula recognition are displayed at positions that do not overlap with other formulas, and if the answer cannot be displayed at the position of the sorted equal sign, the equal sign and the answer are displayed at the position where the equal sign was entered By doing so, it can be realized that the answer can always be displayed. [Other Embodiments] In the above embodiment, the processing for mathematical expressions has been described. However, processing for sorting one word at a time is also conceivable. That is, by having a dictionary of words, one word can be delimited and It is possible to perform a process of aligning things. No.
When the input shown in FIG. 13 is performed, the output screen shown in FIG. 14 is obtained. [Effects of the Invention] As described above, according to the present invention, a reference point coordinate determined from the position of an input character and aligned character data indicating a position when the character strings are aligned and displayed are determined. The display position is determined, and it is determined whether there is another character string already aligned and displayed at the determined display position. Further, when it is determined that there is another character string that is already aligned and displayed, a predetermined value is added to the reference point coordinate to determine a new reference point coordinate until it is determined that there is no other character string, and then the character is displayed. By repeating the process of determining the position and determining the overlap with the other character strings that are already aligned and displayed, the position where the character was input is reflected, and the character is overlapped with another character string that is already aligned and displayed. It is possible to arrange and display without.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of the embodiment, FIG. 3 is a data structure diagram of mathematical formula data, and FIG. FIG. 5, FIG. 6, FIG. 7, FIG. 8 are diagrams showing an example of the displayed expressions, FIG. 9, FIG. 10, FIG. FIG. 11 is a flowchart showing a processing procedure, FIG. 11 is a diagram showing an example of sorted character strings, and FIGS. 13 and 14 are diagrams showing an example of words displayed in the second embodiment.

Claims (1)

(57) [Claims] An information processing method in an information processing apparatus comprising: display means for displaying an image; and coordinate input means for designating desired position coordinates on the image display means, wherein a character string input by the input means is Holding the input position coordinates of each of the constituent characters; determining the reference point coordinates for aligning and displaying the input character string in a predetermined direction based on the held input position coordinates; Aligned character data representing the relative position of each character when the columns are aligned and displayed on the display means is created, and the display position coordinates of each character are obtained by adding the aligned character data to the determined reference point coordinates. By comparing the obtained display position coordinates with the character position coordinates of another character string that is already aligned and displayed, another character string that is already aligned and displayed at the position coordinate where the character is displayed If it is determined that there is another character string already aligned and displayed at the position coordinates where the characters are displayed, a predetermined value is added to the determined reference point coordinates to determine whether there is a new character string. After determining the reference point coordinates, a process of obtaining the display position coordinates of each character by using the new reference point coordinates, and another character string already aligned and displayed at the position coordinates at which the characters are displayed are displayed. Performing a process of determining whether or not there is, when the determination is that there is no other character string already aligned and displayed at the position coordinates to display the character, the reference point coordinates determined at that time and the A character processing method, wherein the input character string is aligned and displayed in a predetermined direction based on the aligned character data. 2. An information processing apparatus using display means for displaying an image and coordinate input means for designating desired position coordinates on the image display means, wherein each character constituting a character string input by the input means is provided. Holding means for holding the input position coordinates, and reference point coordinate determination for determining, based on the input position coordinates held in the holding means, reference point coordinates for aligning and displaying the input character string in a predetermined direction. Means for generating aligned character data representing relative positions of characters when the character string input by the input means is aligned and displayed on the display means; and determined by the reference point coordinate determining means. Display position deriving means for obtaining display position coordinates of each character by adding the aligned character data to the reference point coordinates obtained, and display position coordinates obtained by the display position deriving means. A determination unit that determines whether or not there is another character string that is already aligned and displayed at the position coordinates where the character is displayed by comparing the character position coordinates of another character string that is aligned and displayed with If the determination means determines that there is another character string already aligned and displayed at the position coordinates for displaying the character, a predetermined value is added to the determined reference point coordinates to determine a new reference point coordinate. After that, the processing by the display position deriving means and the processing by the determining means are controlled using the new reference point coordinates, and the determining means is already aligned and displayed at the position coordinates at which the character is displayed. When it is determined that there is no other character string present, control means for controlling the input character string to be aligned and displayed in a predetermined direction based on the reference point coordinates determined at that time and the alignment character data. To Character processing apparatus, characterized by.