JPH01259411A - Character input device - Google Patents

Abstract

PURPOSE:To correct a ratio of longitudinal and transverse sizes of characters to a certain value by providing a character size correcting means which corrects a ratio of longitudinal and transverse sizes of characters, which are recognized by character size information obtained by a character size processing means, to the certain value. CONSTITUTION:A position input device 1 has a coordinate position detecting function to input coordinate position data described on the surface of the device 1 with a pen or the like. This input position data is read in by a controller 3, and position data is used to recognize described characters by the controller 3 and the size of characters is determined. Characters are different in size; but if correction of the character size is designated, a ratio of longitudinal and transverse sizes of a first character is corrected to a certain value to unify the character size. Recognized characters are displayed on a display device 2 in the corrected character size. Thus, characters different in size are corrected to the uniform character size and are displayed.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention relates to a character input device that determines the size of a recognized character based on the size of the first character drawn on a positional human power device. .

(Prior art) In recent years, the position data of characters drawn on a position input device such as a tablet is read in real time, and the characters are recognized online based on this data and information such as the number of strokes. In some cases, the size of the character is known from the position data of the recognized character, the character size is determined based on that size, and the character size is input as the size of the recognized character. In this method, when characters are drawn in different sizes as shown in FIG. 9(a), the characters are displayed in different sizes, making it difficult to display characters of a constant size.

Later, human-powered text devices appeared that added a text size correction process to make the sizes of multiple characters drawn on a position input device such as a tablet constant. This reads the position data of the first character drawn on the position input device in real time, and uses this position data and information such as the number of strokes to recognize the drawn character online. The system learned the size of the font, determined the font size based on that size, inputted it as the size of the recognized font, and displayed the second and subsequent characters at the font size of the first font.

For example, if the first number ``1'' is entered manually, we will recognize that character, check the maximum and minimum of the X-axis and Y-axis for the stroke of that character, and calculate the size of the character. is calculated, and the font size corresponding to this size is determined. In the case of the number "1", the horizontal size of this character size is very short compared to the vertical size, so the characters unified with this character size become vertically long (FIG. 9(b)). Additionally, if the first character is a kanji character "-", it is displayed as a horizontally long character, so conventionally there has been a problem in uniform display of character sizes.

(Problems to be Solved by the Invention) In conventional character input devices that determine the character size based on the size of the first character input,
Since the font size is determined by the size of the first input character drawn with a position detection device such as a tablet, if the ratio of the vertical and horizontal sizes of the character does not reach a constant value, that is, the first If the size of the characters entered is vertically long or horizontally long, the characters that follow will also be displayed in that size, resulting in the problem that the vertical and horizontal balance of the characters is not good.

The present invention has been made in consideration of such circumstances, and an object thereof is to provide a human-powered character device that includes a character size correction processing means for correcting the ratio of the vertical and horizontal sizes of characters to a constant value. be.

[Structure of the Invention] (Means for Solving the Problems) This invention reads position data of characters drawn on a position input device such as a tablet in real time, and calculates the position based on this position data and information such as the number of strokes. In addition to online recognition of characters drawn on the input device, if there is a specification to correct the character size, the size of the first character is determined from the position data of the first character drawn, and the size can be obtained from that size. The ratio of the vertical and horizontal sizes of the characters is corrected to a constant value based on the character size information obtained, and the characters recognized as the overall character size are unified to the corrected character size.

(Operation) According to the present invention, input character information is recognized online simply by inputting characters by hand via a position input device such as a Tough Bullet. The input characters are then displayed on the display device, so it is as simple as writing with a pen on paper, and if there is a specification to correct the font size, the font size is corrected. The font size will be unified and displayed.

In this way, by displaying characters with varying sizes in a uniform character size, effective use of the display screen and proofreading of characters become possible.

(Example) Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an embodiment device. A position input device 1 such as a tablet has a coordinate position detection function, and is used to input coordinate position data drawn with a pen or the like on its surface. This input position data is read by the control device 3, and using the position data, the control device 3 recognizes the drawn character and determines the size of the character. The size of the font varies depending on the size of each font, but if there is a specification to correct the font size, the size of the first character will be corrected to a constant ratio of height and width to make the font size uniform. It is something. The external storage device 4 stores dictionary data necessary for recognition. The recognized characters are displayed on the display device 2 in the corrected character size.

The position input device 1 is made of a transparent tablet, and the display device 2 is made of a liquid crystal display. Coordinate planes of this position input device and display device 2 (coordinate axes and the size of their planes)
are set to be equal to each other, and as shown in FIG. 3, they are laminated and integrated into the control device 3.

With this laminated and integrated structure, the information displayed on the liquid crystal display (display device 2) can be viewed through the transparent tablet (position input device 1), and the position of the displayed information can be changed by indicating the position of the displayed information from the transparent tablet. Coordinates can now be determined manually.

Here, the position input device 1 consisting of a transparent tablet is constructed by arranging two transparent conductive films 1a and 1b facing each other with a spacer IC of several tens of micrometers interposed therebetween, as shown in the cross-sectional structure of FIG. 4, for example. There is.

When pressed by a pen or the like, the two transparent conductive films 1a and 1b are elastically deformed at the suppression designated position as shown by the broken line in the figure, and electrical conduction is established between the two transparent conductive films 1a and 1b. A current is passed between the conductive films 1a and ]b. By measuring the voltage at this time on each of the four sides of the transparent conductive films 1a and lb receipt, the conduction point on the sheet, that is, the coordinates of the position on the tablet surface where the suppression instruction is given, is detected.

Therefore, when a character is written on the tablet surface of the position input device 1 using a pen or the like, information indicating the writing stroke is sequentially detected and input as a series of position coordinates that are instructed to be suppressed.

On the other hand, the control device 3 includes, for example, an input section 3a, a character recognition processing section 3b, a character size processing section 3, as shown in FIG.
cs It is configured with a character size correction processing section 3b, a display control section 3e, and various buffers.

The human power unit 3a reads the position coordinate data inputted from the position input device 1 and stores it in the position data buffer 3fl of the internal storage unit 3f.

The character recognition processing unit 3b analyzes the position coordinate data stored in the position data buffer 3fl, matches it with the contents of a recognition dictionary temporarily storing a part of the external storage device 4, and selects a corresponding one from the character code buffer 3f2. The character code is extracted and stored in the output buffer 3f5. The character size processing unit 3C calculates the size of the drawn character by checking the maximum and minimum of the X-axis and Y-axis for the stroke of the first character stored in the position data buffer 3fl, and also calculates the size of the drawn character. The character size corresponding to the size is determined from the character size correspondence table 3f4, and the output buffer 3f
5.

The character size correction processing unit 3d takes out the character size of the first character stored in the output buffer 3f5, corrects the character size so that the vertical-width ratio of the character size becomes a constant value, and stores it in the output buffer 3f5. It is. The display control section 3e takes out the character code and corrected character size or the character size of each character stored in the output buffer 3f5, and controls the display device 2 to display them.

The external storage device 4 is configured as shown in FIG. 6, and is first divided by the number of strokes D1, and then divided into a plurality of line segments from the start point to the end point of each stroke. The direction is expressed by direction values as shown in FIG. Therefore, the stroke is also made using the direction column information D2. Also, character code information D corresponding to this direction column information D2
3 is also stored.

As shown in FIG. 5, for example, the display device 2 is configured to include a liquid crystal display section 2a, a liquid crystal drive section 2b, a character font section 2c, a character display section 2d, and a screen memory section 2e. The character pattern corresponding to the character code is read from the character font section 2c and written in the part corresponding to the designated display position of the screen memory section 2e, and the liquid crystal drive section 2b reads the character pattern corresponding to the character code into the screen memory 2e. According to the data, dots at corresponding positions on the liquid crystal display section 2a are displayed. As a result, a character pattern or the like consisting of a plurality of connected dots is displayed on the liquid crystal display section 2a.

Here, the movements of each of these components will be specifically explained.

Figure 8 shows that when a character is drawn, it is recognized, the character code is determined, the character size of each character is determined, and if there is a specification to correct the character size, the character size of the first character is changed to vertical, FIG. 7 is a diagram illustrating a process of correcting character size so that the horizontal ratio becomes 1. The explanation will be given according to this figure.

First, when the control device 3 is started, the character recognition processing section 3b
operates, and here initializes the position data buffer 3fl, recognition dictionary 3f1, and output buffer 3f5 (Fig. 8 al)
). This leaves these buffers empty. Next, control is transferred from the character recognition processing section 3b to the input section 3a, where the input section 3a checks the status of the position input device 1 and checks whether the pen is ON or OFF (Fig. 8 a2).
. When the pen that instructs to suppress the tablet is ON, the position coordinate data instructed at that time is read, and the position coordinate data is displayed as a dot on the display device 2, and
The position coordinate data is stored in the position data buffer 3fl (FIG. 8 a3). At this time, it is compared with the position data stored immediately before, and is stored only if the coordinate position is separated by a certain value or more. If this is not done, many identical points will be stored and the capacity of the position data buffer 3fl will become insufficient. Furthermore, when a character stroke break is indicated by the pen-on check a2, that is, when a transition from a pen ON state to a pen OFF state is detected, the break data indicating the break position is stored in the position data buffer 3fl. Storing (FIG. 8 a4) When a character consisting of a plurality of strokes is drawn in this manner, the coordinate position data of each stroke is separated by delimiter data and stored in the position data buffer 3fl. Furthermore, the input unit 3a determines the end of one character by determining the time width of pen OFF or the distance between the writing start point position and the previously stored position data as i'lPI (FIG. 8 a5).

Here, when it is determined that one character has been completed, control is then transferred to the character recognition processing section 3b.

The character recognition processing section 3b analyzes the data in the position data buffer 3fl, first examines the delimiter data, and determines the number of strokes of the position data.

Next, for each stroke, direction-specific data is created from each coordinate position data that constitutes the stroke. This directional data includes, for example, the direction of the stroke in Figure 7 (b
), this is done by sequentially determining which direction is the connection between a plurality of position coordinate data that constitute the writing stroke of the input character pattern. As a result, if the writing stroke is, for example, the 7th
It is expressed in direction-specific data as shown in Figure (a) (Figure 8a).
6).

Next, in the recognition process (FIG. 8 a7), dictionary data consisting of direction string information and character codes corresponding to the number of strokes is stored from the external storage device 4 in the recognition dictionary 3f3, and the created direction string data and The direction column information in the recognition dictionary 3f3 is compared to see if there is a match, and if there is a match, the character code is extracted and written to the output buffer 3f5 (FIG. 8 a8). At this point, the characters are recognized. Even if there is no exact match, if there is a match within the allowable range, that character code is extracted.

Next, control is transferred to the character size processing section 3c, which finds the maximum and minimum of the X and Y axes for each stroke based on the data in the position data buffer 3fl, and calculates the size for each stroke. Among the maximum and minimum values of each stroke calculated in this way, the maximum and minimum values are further extracted and used to calculate the drawn size of the character. Next, the character size calculated here is compared with the character size in the character size correspondence table 3f4, the corresponding character size is extracted, and the size is sent to the output buffer 73f5 as an attribute of the recognized character code. Store it (Fig. 8 a9). Furthermore, in the font size correspondence table 3f4, when there are variations in font size, the font size is fixed within a certain range.

In this way, once the character size of each character is determined, it is then determined whether or not to specify correction of the character size (FIG. 8 alO) L. If specified, the character size correction processing unit 3
Control is transferred to step d, and the character size correction processing unit 3d calculates the ratio between the vertical size Y size and the horizontal size X size of the first character stored in the output buffer 3f5 (Fig. 817). Correct the font size by keeping the ratio of X size and Y size constant. Fig. 8 shows an example when this constant value is set to 1. In this case, the X size and Y size of the first character stored in the output buffer 3f5 are compared (817 in Fig. 8). Then, the smaller size is converted to the larger size, so that the ratio of the X size to the Y size is 1 (Fig. 8 817, a15
). This is then stored in the output buffer 3f5 as a corrected character size (817 in FIG. 8). Note that when the size of displayed characters is kept constant, character size processing and character size correction processing are not performed for the second and subsequent characters. Furthermore, if the character size is not corrected, the size of each character is stored in the output buffer 3f5.

Once the corrected character size is determined as described above, control then passes to the display control unit 3e, which uses the character code in the output buffer 73f5 and the corrected character size corrected to the first character size. It is output to the display device 2 and displayed on the display device 2 (817 in FIG. 8).

Note that this invention is not limited to the above embodiments.

For example, you can correct the average value of the height and width of characters as the character size, set the fixed ratio of the height and width of the character size to various values such as 1/2 or 2 instead of just 1, or change the mode. It may be possible to specify it by means.

Also, alphanumeric characters and letters should be half-width, etc.
The vertical and horizontal ratios of character sizes may be registered for related character codes, and the ratio corresponding to the recognized character may be automatically set. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] As explained above, according to the present invention, a position input device such as a tablet and a display device consisting of a flat display are laminated and integrated, and position data input by hand is read in real time to display character patterns. Online character recognition, 1
Make it constant by correcting the font size of the first character.

As a result, the font sizes of the complicated characters written on the position input device are unified and displayed on the display device.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of the embodiment device, FIG. 2 is an internal configuration diagram of the control device, FIG. 3 is a diagram showing the structural form of the device, FIG. 4 is a diagram showing the structure of the position input device, and FIG. Figure 6 shows the structure of the display device, Figure 6 shows the configuration of dictionary data stored in the external storage device, Figure 7 shows how to determine direction values and direction column information, and Figure 8 shows how characters are displayed. A processing flowchart showing the process of drawing, recognizing, determining the size and displaying, FIGS. 9(a) and 9(b) show the conventional technology, and (C
) is a specific explanatory diagram of this embodiment. 1... Position input device (transparent tablet) 2... Display device (liquid crystal display) 3... Control device 3a... Human power section 3b... Character recognition processing section 3C... Character size processing section 3d ...Character size correction processing unit 3e...Display control unit 3fl...Position data buffer 3f2...Character code buffer 3f3...Recognition dictionary 3f4...Character size correspondence table 3f5...Output buffer 4 ...external storage device

Claims (2)

[Claims] (1) a position input means for inputting a coordinate position corresponding to a designated position; a character recognition processing means for analyzing a sequence of coordinate values sequentially input by the position input means and outputting a corresponding character code; a character size processing means for outputting character size information corresponding to the distribution range of a coordinate value string sequentially inputted from the input means; a character size correction means for correcting the ratio of the vertical and horizontal sizes of the recognized characters to a constant value based on the size information of the characters; and a character size outputted by the character size processing means or the character size correction means and the characters. 1. A character input device comprising display means for displaying a character corresponding to a character code output from a recognition processing means. (2) The character input device according to claim 1, wherein the position input means and the display means are integrated.