JP2915413B2 - 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 displaying found data such as characters and figures in a development display area based on, for example, typesetting data.

2. Description of the Related Art Conventionally, when a document is created and displayed in a predetermined frame on a device of this type, for example, a word processor or the like, an area specified by a format, a frame, or the like input by an operator includes: A display font corresponding to the input character code is developed and displayed in a pattern.

In addition, such a device can change the display data such that the displayed character can be outlined or inverted, and the character can be displayed in italics or shaded (shadow display). Some have done it.

[Problems to be Solved by the Invention] However, as described above, when it is desired to display characters displayed in the display area in italics, it is difficult to display only characters in italics because the balance with the display frame is poor. The display frame also needs to be tilted according to the angle at which italic is used. Conversely, when it is desired to incline the display frame by a predetermined angle, the balance between the frame and the character in which the character displayed in the frame remains as it is is poor, so that the character also needs to be displayed in italics. . However, such an italic display process must be performed separately for each of the character and the frame indicating the display area, so that the operation is cumbersome, and the display of the italic angle of the character and the frame indicating the display area is not easy. It was extremely difficult to match italic angles.

Regardless of whether or not the display frame is displayed in a visible form after the operation, the transformation method requires inputting the coefficient of the transformation as a parameter setting from the keyboard. I ca n’t,
In other words, it was difficult to perform the desired character transformation.

The present invention has been made in view of the above conventional example, and based on an instruction to move one vertex of a display frame, the display frame can be deformed into an arbitrary shape, and characters inside the display frame are also displayed in the display frame. It is an object of the present invention to provide a character processing method and a character processing apparatus which can be transformed into an arbitrary shape in response to the above-mentioned transformation.

[Means for Solving the Problems] In order to achieve the above object, a character processing device of the present invention has the following configuration. Display means for displaying a character pattern based on vector font data corresponding to the input character data; and moving another vertex of the display frame based on an instruction to move one vertex of the display frame of the character pattern. Deforming means for changing the shape of the display frame by moving the one vertex without causing the change, and changing the vector font data in accordance with the shape of the display frame deformed by the deforming means; Means for displaying a character pattern based on the display means on the display means.

To achieve the above object, the character processing method of the present invention includes the following steps. That is, a step of displaying a character pattern based on a vector font corresponding to the input character data on a display means, and, based on an instruction to move one vertex of the display frame of the character pattern, the other vertex of the display frame is displayed. A deforming step of deforming the shape of the display frame by moving the one vertex without moving, and changing the vector font data according to the shape of the display frame deformed by the deforming step; Displaying a character pattern based on data on the display means.

[Operation] In the above configuration, a character pattern based on the vector font data corresponding to the input character data is displayed on the display means, and based on an instruction to move one vertex of the display frame, another character is displayed. By moving the one vertex without moving the vertex, the shape of the display frame is deformed, the vector font data is changed according to the shape of the deformed display frame, and the character pattern based on the changed vector font data is changed. On the display means.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Description of Document Processing Apparatus (FIG. 1)] FIG. 1 is a functional block diagram of the character processing apparatus of the embodiment.

In the figure, reference numeral 10 denotes a development area instructing unit for instructing a display frame of characters to be input and displayed, and this instruction is performed by an operator using a keyboard, a mouse, or the like. Upon input of the character code 15, the pattern developing unit 11 reads out the corresponding font data from the font memory storing the corresponding pattern data, and develops the pattern in the display area designated by the development area designating unit 10. Reference numeral 12 denotes a development area change unit that changes the shape of the display area specified by the development area instruction unit 10 using a keyboard, a mouse, or the like. When the shape of the development area is deformed in this manner, the character pattern in the display area is deformed by the pattern deformation unit 13 in accordance with the deformation amount of the display area. Reference numeral 14 denotes a modified character allocating unit that allocates and displays the character pattern thus modified in the display area.

[Explanation of Document Processing Apparatus (FIG. 2)] FIG. 2 is a block diagram showing a schematic configuration of the document processing apparatus according to one embodiment of the present invention.

In the figure, reference numeral 100 denotes a control unit that controls the entire document processing apparatus, and includes a CPU 101 and a CPU 1 such as a microcomputer.
ROM1 that stores the control program and various data of 01
02. It includes a RAM 103 for temporarily storing various data as a work area of the CPU 101, and for storing input document data, frame information described later, and the like. A font memory 104 stores font data corresponding to character codes. The font data of the font memory 104 may be dot pattern fonts or vector font data. A frame storage unit 105 stores display frame information such as characters on the CRT 110 specified by the mouse 113, the keyboard 112, and the like.

Reference numeral 110 denotes a CRT display unit which displays an image corresponding to the dot information stored in the video memory 111, and displays input document information, messages to the operator, control data, and the like. 112 is a keyboard for inputting document information and control information by an operator, 113 is a CRT 110 for moving a cursor or the like, pointing to a command image such as an icon and inputting a command, or specifying a coordinate position on a screen. , A pointing device such as a mouse capable of indicating a display area for characters and the like. Reference numeral 114 denotes a printer for, for example, a laser beam, and reference numeral 115 denotes an interface unit that performs interface control between the printer 114 and the control unit 100. Reference numeral 116 denotes an image memory for storing image data such as characters and the like, which is output to a printer 114 or the like in accordance with a command output from a keyboard 112, a mouse 113 or the like to form an image.

Reference numeral 117 denotes a bit management unit (BMU) used as the pattern deformation unit 13 and the development area change unit 12 in this embodiment, and transfers data between the video memory 111, the image memory 116, and the RAM 103 to the CPU 101. DMA transfer is possible without any intervention. In this transfer,
It is possible to execute logical operation in units of bits, zooming and rotation of an expanded figure, and display in italics. Also, BMU117
When a transformation instruction is input from the pointing device 113 to an arbitrary character string and display area expanded on the CRT 110, the display frame and characters can be transformed and displayed in accordance with the instruction. it can.

[Explanation of Display Area Frame (FIGS. 3 to 5)] FIG. 3 is a view showing a display area (expansion area) of characters and the like in this embodiment.

Reference numeral 21 denotes a character development area. This display area can be designated by designating, for example, a point on a diagonal line of a rectangle at a place to be displayed by a pointing device. Reference numeral 22 denotes a development start address of the development area, and a predetermined character pattern is developed in the character development area 21 from the development start address.

FIG. 4 is a diagram showing a process of transforming the development area.
The figure shows the development area before deformation, and the start address B0 (0,
0) is defined by addresses B1 to B3.

In FIG. 4B, 32 to 34 indicate deformed and developed areas, respectively, and the deformed areas are defined by addresses B01 to B31. The deformation development area 35 is a deformation area.
The figure shows a state in which 32 is shifted to the address PB0. Here, a deformed area corresponding to the deformed area 32 is shown, but the same can be set for other deformed areas 33 and 34. In addition,
Here, an example is shown in which the deformation area 35 is deformed so that the ratio between the amount of penetration and the amount of departure is 1: 1 with respect to the development area 31.

The deformation operation will be described. The pointing device 113 instructs a deformation definition screen display (menu screen display) and a display area to be deformed. And RAM103
A size parameter as an output size point and an italic parameter as an italic angle are set in the deformation parameter storage area. Next, when a character code is input from the keyboard 112, the character pattern is developed corresponding to the input display area and the character pattern is displayed on the CRT device 110.

At this time, the pre-deformation area 31 serving as the standard frame is defined by the start addresses B1 to B3, and the deformation areas 32 to 35 are defined based on the input italic parameters. In addition,
The output position PB0 of the deformed character in the deformed area 35, that is,
The offset amount Δx by which the deformation area 35 is shifted is However, since B01 (x) = 0, the content of the above equation is Δx
= −B11 (x) / 2.

Although the transformation processing of the development area 31 has been described as being performed by displaying the transformation definition screen, for example, a point indicated by the address B2 in FIG. 4A is designated by clicking with the mouse 113, and this point is designated. For example, by moving to the point indicated by the address B21 in FIG. 4B and clicking again, the deformation may be made as shown in FIG. 4B.

[Explanation of Character Pattern Deformation Processing Associated with Expansion Area Deformation (FIGS. 5 and 6)] Hereinafter, character pattern deformation processing in the case of a vector font will be described.

FIG. 5 is a diagram showing an example in which the shape of the development area is deformed, and this development area is visually identified as a deformed part using, for example, a pointing device, similarly to a deformation operation on a general input figure. The amount of deformation may be instructed or input as a numerical value from a keyboard or the like. As the character [character] displayed in the development area 41 is laterally shifted by dx as shown in the deformation area 42 and is deformed into italic, the character "character" is similarly deformed into italic.

FIG. 6 is a diagram showing outline data consisting of sample points obtained by sampling a kanji character "Ai" by the B-spline method.

In the figure, the sample points of the character "Love" are indicated by small circular dots, and are here arranged in a matrix of 512 × 512 dots. Here, each outline data is configured in a closed loop. The B-spline is created such that a spline is generated inside a sample point as a vertex with the start point and the end point of a certain curve section as fulcrums.

FIG. 7 is a diagram showing an example of vector font data according to the embodiment.
The control information section storing data such as contour lines, and the fields indicated by 71 to 73 are sample data areas storing coordinate values of respective sample points and attribute flags. This attribute area stores information indicating whether the sample point is a curved section, the start point or end point of the curved section, and the like.

Therefore, the character font data is read out and read from the RAM 103.
When the development area where this character pattern is developed is transformed as shown in FIG.
After adding the length in the x direction corresponding to each y coordinate of the triangle 43 in FIG. 5A to each of the X coordinates of the vector font stored in M103, the vector font can be easily expanded by pattern development. The italic characters shown in Figure 5A are obtained.

Similarly, in the case of a deformed area 34 as shown in FIG. 4B, the displacement of B21 with respect to B2 is obtained (this is the address of B2 and the (x, y) coordinate value of B21 specified by a mouse or the like). From the triangles 36 and 37), a deviation amount in the y direction or the x direction with respect to each x coordinate and y coordinate is obtained, and this deviation amount is added to the (X, Y) coordinate values shown in FIG. By doing so, a corresponding italic pattern can be created.

When moving the vertex 90 of the development area by Δx and transforming it to the vertex 91, change the point (x, y) in the development area to (x + αxy, y)
(Α is a constant). For example, in the case of FIG. 5B, if α is set to α = Δx / wh, a deformation as shown in FIG. 5C is obtained.

[Explanation of Expansion Area Deformation Processing (FIG. 8)] FIG. 8 is a flowchart showing expansion area deformation processing by the control unit 100 of the document processing apparatus according to the present embodiment, and a control program of the CPU 101 executing this processing. Is the R of the control unit 100
It is stored in OM102.

This program is started by an input from the keyboard 112 or the mouse 113, and a development area on the CRT 110 is specified by an address value on the CRT 110 input in step S1 or an instruction on a definition screen. In step S2, when the character string displayed in this development area is input, step S3
Then, the input character string is subjected to pattern expansion with reference to the font memory 104, stored in the video memory 111, and
Display at 0. At this time, the input character string is displayed enlarged or reduced according to the size of the development area.

In step S4, CRT1
It is checked whether or not the transformation information of the development area displayed in 10 has been input. If the transformation information has been inputted, the process proceeds to step S5, where the development area is transformed and displayed in the designated form as shown in FIG. In step S6, according to the deformation amount of this development area,
Change the shape of the characters in that area. Here, the font data is changed as described with reference to FIG. 5 described above, and in step S7, the data is developed into pattern data based on the font data and displayed on the CRT 110.

In step S8, the process waits for the operator to input an instruction indicating that the deformation processing of the development area has been completed. If the end instruction is input, the process ends. However, the operator is not satisfied with the deformation, for example. If it is desired to perform the deformation process again, the process returns to step S4, and the above-described operation is performed.

In this embodiment, the case where the font data of a character is a vector font has been described.However, the present invention is not limited to this. The dot pattern data of a normal dot image may be used. Rotation, deformation processing, and the like are performed. The characters in the development area are not limited to one character, and may be composed of a plurality of character strings.

Further, in this embodiment, the description has been made such that the character string already displayed in the expansion area is deformed according to the deformation of the expansion area. , The character string input there may be displayed in, for example, italics in correspondence with the deformation of the development area from the beginning.

As described above, according to this embodiment, a character string to be displayed is specified according to the shape of the expanded area by designating the expanded area for displaying the character string and changing the shape of the expanded area. Can be transformed and displayed. As a result, there is an effect that the design of the character can be easily changed and italic display instruction can be easily performed.

Further, in this embodiment, the modification based on the affine transformation has been described, but the invention can be applied to other modifications such as a modification from a square to a trapezoid.

As another embodiment, as shown in FIG. 9, a character string is poured into a given figure, and a deformation pattern of one character and one character is determined by, for example, equal division of a side by the number of characters, and the deformation of the character string is performed. It is also possible to do.

[Effects of the Invention] As described above, according to the present invention, a display frame can be deformed into an arbitrary shape based on an instruction to move one vertex of the display frame, and characters inside the display frame are also displayed. There is an effect that it can be deformed to an arbitrary shape corresponding to the deformation of the frame.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of the document processing apparatus of the embodiment, FIG. 2 is a block diagram showing a schematic configuration of the document processing apparatus of the embodiment, FIG. 3 is a view showing a display frame, and FIG. 4A is not modified. FIG. 4B is a diagram showing a display frame, FIG. 4B is a diagram showing a modification of the display frame, FIGS. 5A and 5C are diagrams showing the deformation of characters accompanying the deformation of the display frame according to the embodiment, and FIG. FIG. 6 is a diagram showing a modification of the display area accompanying the movement of the vertices. FIG. 6 is a diagram showing sample points of characters by the B-spline method. FIG. 7 is a diagram showing an example of vector font data of the embodiment. FIG. 8 is a flowchart showing a process of transforming a display frame in the document processing apparatus of the embodiment, and FIG. 9 is a diagram showing a modification of a character string of another embodiment. In the drawing, 10: a development area instruction unit, 11: a pattern development unit, 12: a development area change unit, 13: a pattern deformation unit,
14: Modified character allocation unit, 15: Character data, 50: Control information, 53: Attribute flag, 100: Control unit, 101: CP
U, 102… ROM, 103… RAM, 104… Font memory,
105: Frame storage unit, 110: CRT, 111: Video memory,
112 ... keyboard, 113 ... mouse, 114 ... printer, 115 ... interface unit, 116 ... image memory, 117 ... BMU, 118 ... system bus.

Continued on the front page. (72) Kunio Seto, 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Akishi Shirasaka 3-30-2, Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Masaki Hamada 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP-A-61-156087 (JP, A) JP-A-62-44451 (JP, A) JP-A-63-108388 (JP, A) JP-A-59-94783 (JP, A)

Claims (2)

(57) [Claims] 1. A display means for displaying a character pattern based on vector font data corresponding to input character data, and another display frame based on an instruction to move one vertex of a display frame of the character pattern. Deforming means for changing the shape of the display frame by moving the one vertex without moving the vertex; and changing the vector font data according to the shape of the display frame deformed by the deforming means. Means for displaying a character pattern based on vector font data on the display means. 2. A process for displaying a character pattern based on vector font data corresponding to input character data on a display means, and a step of moving one vertex of a display frame of the character pattern, Deforming the shape of the display frame by moving the one vertex without moving the other vertex; and changing the vector font data according to the shape of the display frame deformed by the deforming process. Displaying a character pattern based on the obtained vector font data on the display means.