JPH0640258B2 - Underline / sideline generator - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underline / barline generation device used in a document creation device, a character output device, and the like that handles character font information having a dot matrix structure.

[Technical background of the invention and its problems]

In a device that handles a character font having a specified dot matrix configuration, such as a document creation device, in the case of providing a function capable of enlarging / reducing a character font having a specified dot matrix configuration at a certain scale, conventionally, Fig. 1
As shown in (a) and (b), a so-called simple enlargement / reduction system has been adopted in which dots are simply increased or deleted from the original character pattern dots sd. In addition, here, the process of pattern-converting the original character pattern dots to change the dot positions to obtain new developed dots is referred to as dot interpolation.

Such a conventional enlarging / reducing means can be realized relatively easily and inexpensively, but the pattern shape to be output should be originally expressed, for example, the step-like forming portion (constriction) in the shaded portion is conspicuous. There was the inconvenience that it was deviated from the character form and it became an unnatural character expression that was difficult to recognize.

Further, in the conventional dot interpolating means as described above, when it is desired to obtain a deformed font in which the original character pattern or the character pattern having an arbitrary enlargement / reduction ratio is slanted or rotated at an arbitrary angle. In addition, even if this cannot be easily obtained, and even if the deformation range is greatly restricted, the converted character pattern is distorted, the conversion accuracy is greatly reduced, and pattern conversion with high fidelity is performed. There was an inconvenience that it was not possible.

Further, for the deformed characters such as the inversion characters and the italic characters as described above, the occupied character width in the main scanning direction changes variously depending on the angle and the enlargement / reduction ratio added thereto.
Therefore, each of the modified characters must always be underlined or laterally drawn with a length corresponding to the character width.

[Object of the Invention]

The present invention has been made in view of the above situation, and dot interpolation is performed on a character pattern having a predetermined dot matrix configuration represented by X and Y coordinates at least in the main scanning direction or the sub-scanning direction with an arbitrary designated angle, and then the rotation or skew is performed. With a pattern conversion mechanism that obtains modified character patterns by shaping, with a relatively simple configuration, for modified characters after dot interpolation with a specified inclination angle, optimal for each character in the character array direction It is an object of the present invention to provide an underline / sideline generation device that can develop an underline / sideline pattern with a length.

[Outline of Invention]

According to the present invention, a character pattern having a predetermined dot matrix configuration represented by X and Y coordinates is dot-interpolated at least in the main scanning direction or the sub-scanning direction with an arbitrary specified angle, and a transformed or obliquely deformed character pattern is generated. In the obtained pattern conversion mechanism, X.
The length of at least one side of the circumscribing rectangular area on the Y line is calculated, and based on this information, the number of developed dots in the X or Y direction with respect to the length in the main scanning direction of the character is obtained, and that dot is calculated. According to the numerical data, the underline or side-line pattern corresponding to the corresponding deformed character pattern is developed. With this configuration, the underline / side-line pattern can be always developed with the optimum length for each of the modified characters.

Example of Invention

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a circuit block diagram showing an embodiment of the present invention, and FIGS. 3 to 11 are operation explanatory diagrams of the above embodiment. In the figure, 10 is the CP that controls the entire system
U and 11 are main memories (MM), and 12 is a CPU bus.
13 is a display control circuit (CRT-C) 14 is a frame memory (F
M), 15 is a parallel-serial conversion circuit, 16 is a CRT display unit, 17 is a print control unit, 18 is a line buffer, 19
Is a serial dot printer.

Reference numeral 21 is a register representing a size (Vsize) (Vsize shown in FIG. 7) corresponding to the width (main scanning interval × rotation) in the sub-scanning direction (Ss shown in FIG. 6) after the pattern conversion. Reference numeral 22 is a register indicating the size (Hsize) (Hsize shown in FIG. 7) corresponding to the width in the main scanning direction (Sm shown in FIG. 6). Reference numeral 23 is an underline / lateral line control unit for generating an underline / lateral line dot pattern having a length according to the contents of the register 21 and writing it into the line buffer 18. Reference numeral 24 is a trigonometric function table that stores angle information (trigonometric function data) according to a designated angle when the character is obliquely formed, turning, and the like. Reference numeral 25 is a zone designation register for zone-dividing a character pattern after conversion processing that exceeds a reference character height in pattern conversion into units of the reference character height. 26 and 27 follow the enlargement / reduction ratio of characters,
A register that stores the dot step width (dx, dy) that indicates the expanded dot interval. 28 is 0 to 7 for the pattern converted character.
An offset register for selectively giving an offset in a dot range, and 29 is an offset data generation unit for generating offset data (“0” indicating non-display) with the number of dots according to the offset value of the offset register.

Reference numerals 31 to 49 each constitute a component for generating a dot interpolation address, and 31 is a dot step width (DX) in the sub-scanning direction (Ss) including an x component as shown in FIG.
1) is a register, 32 is a register for storing the dot step width (DX2) in the main scanning direction (Sm) including the x component as shown in FIG. 7, 33 is an initial value in the main scanning direction including the x component (initial) Address; X1 init) register, 34 is the dot width in the sub-scanning direction including the y component (DY)
1) is a register, 35 is a register that stores the dot step width (DY2) in the main scanning direction that includes the y component, and 36 is an initial value (initial address; Y) that includes the y component in the sub scanning direction.
This is a register that stores 1 init). Each of the above registers 31
The dot interpolation addresses stored in .about.36 consist of integer part data and decimal part data, respectively.

37 is an adder circuit (ADD-A) for adding the contents of the register 31 and the contents of the register 42 indicating the dot position in the sub-scanning direction containing the x component, and 38 is the main scanning containing the contents of the register 32 and the x component. Register 4 which indicates the dot position in the direction
The adder circuit (ADD-B) 39 adds the contents of 4 to the contents of the register 34 and the contents of the register 46 indicating the dot position in the sub-scanning direction including the y component.
C) and 40 are adder circuits (ADD-D) for adding the contents of the register 35 and the contents of the register 48 indicating the dot position in the main scanning direction including the y component.

A data selector 41 selects the contents of the register 33 at the start of dot interpolation processing for one character, and thereafter selects the output of the addition circuit 37 each time one main scan is performed.
2 is a register for storing a new dot address at the time of dot interpolation represented by an integer part and a decimal part including the x component selected by the data selector 41, and 43 is a register for selecting the contents of the register 42 at the start of the main scanning. A data selector that selects the output of the adder circuit 38 for each one dot interpolation process, and 44 is a register that stores a new dot address during dot interpolation including the x component selected by the data selector 43. Reference numeral 45 is a data selector that selects the contents of the register 36 at the start of dot interpolation processing for one character, and thereafter selects the output of the adder circuit 39 each time one main scan is performed, and 46 is a data selector 45. A register for storing a new dot address at the time of dot interpolation represented by an integer part and a decimal part including the selected y component, 47 selects the contents of the register 46 at the start of the main scanning, and then one dot of interpolation A data selector that selects the output of the adder circuit 40 for each processing, and 48 is a y selected by the data selector 47.
It is a register that stores a new dot address at the time of dot interpolation including a component. 49 is each of the data selectors 41,
The selection control circuit (SC) controls 43, 45, and 47.

50 is a comparison value for comparison with an interpolation value described later,
That is, it is a register that stores the threshold value (th).

51 is a predetermined dot matrix unit (16 × 1) including Chinese characters
It is a Kanji pattern memory (KPM) that stores character pattern data of 6 dots. Reference numeral 52 is a one-character buffer composed of high-speed RAM for storing the one-character dot pattern read out from the kanji pattern memory 51. Here, the one-character dot pattern is surrounded by off-dots (“0”). ) It is stored in a state of being filled with the bit pattern. Reference numeral 53 is a bit selection circuit for selectively outputting dot information of four points on one grid surrounding a new dot according to the value of each integer part of the registers 44 and 48 in the character pattern data stored in the one character buffer 52. is there. Reference numeral 54 is a register for storing the 4-bit information output from the bit selection circuit 53.

55 to 57 are components of a dot pattern recognition unit (DSP) that recognizes a pattern of dot information output from the bit selection circuit 53 and selectively controls switching of interpolation values of new dots surrounded by four dots. 55 recognizes the dot pattern state of four points from the bit contents of the register 54, and when it is in a specific dot pattern state described later, further sequentially selects the dot information of specific two grids around it. Therefore, the discrimination control circuit for controlling the bit selection circuit 53, 56 is read under the control of the discrimination control circuit 55.
A register for storing bit information, 57 is a discrimination control circuit 5
5 is a dot discrimination circuit that outputs a 1-bit interpolation value switching selection signal according to the dot pattern state of the dot information of the two grids and the dot information of the register 54 read under the control of 5.

Reference numeral 58 denotes the fractional part value (main scanning direction offset value including the 5-bit x component) stored in the register 44 and the register 5
4 dot information stored in 4 and dot discrimination circuit 57
An interpolation table ROM that outputs the dot interpolation value (Qxy) of a new dot within the area surrounded by the dot information of the four points, using the 1-bit interpolation value switching selection signal output from Yes, 256K bits (3
A 2K × 8 bit) mask ROM is used to output an 8-bit (0 to 255 level) interpolated value in accordance with the 15-bit read address described above.

Reference numeral 59 is a comparator that compares the interpolated value output from the interpolation table ROM 58 with the threshold value stored in the register 50, and indicates an on-dot (bright spot) when the interpolated value exceeds the comparison value, that is, the threshold value. It outputs a 1 "level signal.
Reference numeral 60 sequentially stores the dot information output from the comparator 59, and the CPU bus 1 for each write bit unit (here, 8-bit unit) of the memory in which the character pattern is expanded.
2 is a shift register that outputs to the upper part.

3 to 11 are diagrams for explaining the operation of the above-described embodiment.

3A to 3F show dot information (dot pattern) of four points on one grid surrounding a new dot generated by the interpolation process, level division of the interpolation value set in the interpolation table ROM 58, and table type. FIG.
Here, the interpolated value is represented by 0 to 255 levels of brightness (brightness level), and a part of the divided area is indicated by contour lines. The specific operation of this dot interpolation processing is disclosed in Japanese Patent Application No. 58-193752 (dot interpolation control method).

FIG. 4 is for explaining an example of table type selection switching when only one dot is on (“1”) or off (“0”) in the dot pattern of four points on one grid. The dot pattern recognition unit (DSP), for example, when only one of the four surrounding dots (D0, D1, D2, D3) is off, that is, "0" (D0 shown in outline in the figure), Furthermore, if the on / off state of specific dots (Da, Db) in the surrounding grid is recognized, and if Da, Db = "1", then FIG.
If a corner type table (T1) as shown in (d) is selected, and if at least one of Da and Db is "0", the diagonal type table as shown in Fig. 3 (f) is selected. Select the table (T0). In this way, the interpolated values of the new dots located in the dot areas of four points are further determined by the dot state of the surroundings when the dots of the four points form the specific pattern as described above.

5 (a) to 5 (d) show various pattern conversion examples, in which Sm indicates the main scanning direction, Ss indicates the sub scanning direction, and FIG. (Flat), Figure (b) is italic,
FIG. (C) shows a bottom aligned italic object, and FIG. (D) shows a rotator.

FIGS. 6 (a) and 6 (b) explain the relationship between the dot interpolation output target, that is, the image output target, and the main scanning direction (Sm) and sub-scanning direction (Ss) during dot interpolation at that time. Fig. (A) is the main scanning and sub-scanning direction during dot interpolation during CRT, and Fig. (B) is the main scanning and sub-scanning direction during dot interpolation during printout. The scanning directions are shown. In this way, the dot interpolation process at the time of CRT display output and the dot interpolation process at the time of printout are in a state in which the main scanning direction and the sub scanning direction are interchanged.

FIG. 7 is a diagram showing the correspondence of various setting data.

FIG. 8 is a diagram showing a relationship between a character whose pattern is converted by the dot interpolation processing and a rectangle (including a square) circumscribing the character.

FIG. 9 is a diagram showing an example of setting the character pitch (CP) and line pitch (LP) for various modified characters.

FIG. 10 is a diagram showing an example of developing underlines for various modified characters.

FIG. 11 is a diagram for explaining the zone designation operation.

Here, the operation of one embodiment will be described. At the time of dot interpolation, the CPU 10 initializes various registers according to dot interpolation designation information input from the outside. That is,
The CPU 10 sets in the register 50 a comparison value, that is, a threshold value (th) for performing comparison with the interpolation value generated from the interpolation table ROM 58, and then sets a reference dot step width (dx, dy; reciprocal value of enlargement / reduction ratio) is calculated and set in registers 26 and 27. Further, in the case of rotation or italics, trigonometric function data (sin, cos, tan) according to the specified angle is trigonometrically calculated. Table 2
Set to 4. After that, these registers 26, 27,
And setting data of the trigonometric function table 24 (sin, cos, ta
Based on n), calculate the initial value (initial address; X1 init, Y1 init) and dot step size (DX1, DY1, DX2, DY2) for generating the dot interpolation address, and register these data. It is set to 31 to 36, and the V size and H size data (Vsize, H) that accompany changes in the character height and character width caused by pattern conversion such as enlargement and turning
size) is calculated and set in registers 21 and 22, and when zone division occurs, the number of zones is calculated and this data is set in register 25. Further, when the dot-interpolated character is moved within the range of 1 to 7 dots at the time of output (for example, dot-interpolated ruby characters, half-width characters, etc. are printed at 1 to 7 dots at the time of printing).
The number of dots in the main scanning direction of a character that has undergone pattern conversion is not a multiple of the writing width (8 dots) of the image memory that is the output target, and the byte on the image memory side When it becomes necessary to match the boundary (writing width), the offset value is set in the offset register 28 within the range of 1 to 7 dots.

After completing the initial setting of each register as described above,
U10 starts the following dot interpolation address generation processing.

Here, first, the overall operation will be described by taking as an example the case where dot interpolation is performed with a true object (or a rectangular object or a flat object) as an output target as shown in FIG. 5A (for example, simple enlargement / reduction). To do. At the time of this dot interpolation, the register 31 is "0", the register 32 is the dot step width "dx", the register 3
3, the initial value "sx" in the main scanning direction (Sm), the dot step width "dy" in the register 34, "0" in the register 35, and the register 3
The initial value “sy” in the sub-scanning direction (Ss) is set in each of the six.

Here, the dot step width (dx, dy) set in the registers 32 and 34 is given as the reciprocal value of the enlargement / reduction ratio. In addition, the register 33 has an Ix of [Ix = (dx-1) / 2].
Is given as the initial value (sx), and [Iy
= (Dy-1) / 2] is given as an initial value (sy), and when dx or dy is "1" or less (that is, when expanding), Ix
Alternatively, Iy becomes negative to indicate an address outside the original character pattern storage area of the 1-character buffer 52, and when dx or dy is “1” or more (that is, at the time of reduction), Ix or Iy becomes positive and the 1-character buffer is displayed. An address in the original character pattern storage area 52 is shown. In addition, the register 50 is compared with the interpolation value output from the interpolation table ROM 58, and an arbitrary level (0 to 255 level) for determining which level of the new dot or higher is to be a meaningful dot. Comparison value of or threshold (th)
Is set.

Further, the CPU 10 reads out dot pattern data for one character to be dot-interpolated from the Kanji pattern memory 51, and writes this character pattern data in the one-character buffer 52. At this time, as described above, the dot pattern data for one character to be dot-interpolated is stored in the one-character buffer 52 in a state in which the dot pattern data is surrounded by meaningless "0" dots.

After the data set to the registers 31 to 36 and the extraction of the interpolation target character pattern to the 1-character buffer 52 are completed, the register 3 is controlled under the control of the selection control circuit 49.
The data (sx, sy) to be the initial dot addresses stored in 3, 36 are selected by the selection circuits 41, 45 and stored in the corresponding registers 42, 46, respectively. Further, when starting the main scanning, the register 42,
The data (sx, sy) stored in 46 is the selection circuits 43, 4
7 to select the corresponding registers 44 and 4 respectively.
Stored in 8.

Data stored in these registers 44 and 48 (sx, sy)
Is given the value of its integer part to the bit selection circuit 53,
The value of the fractional part is given to the interpolation table ROM 58.

The bit selection circuit 53 selects dot information of one grid and four points from the one character buffer 52 based on the input value of the integer part and supplies the dot information to the interpolation table ROM 58. At this time, at the time of enlargement (dx, dy, <1), since the bit selection circuit 53 is given a negative value indicating an address outside the original character pattern storage area of the 1-character buffer 52, the original character Dot selection is started from dot information of four points on one grid including dots outside the pattern storage area. Also, when reducing (dx, dy
In> 1), since the bit selection circuit 53 is given a positive value indicating the address in the original character pattern storage area of the 1-character buffer 52, one grid of 4 points in the original character pattern storage area Dot selection starts from dot information.

The interpolation table ROM 58 stores the offset values (total 10 bits) from the registers 44 and 48, the dot information of four surrounding points from the bit selection circuit 53, and the 1-bit interpolation value from the dot pattern recognition unit (DSP). The 8-bit interpolation value (Qx
y) is output. At this time, the dot pattern of one grid of four points output from the bit selection circuit 53 is recognized by the dot pattern recognition unit (DSP). As shown in FIG. 4, when the dot pattern is a specific dot pattern, it is further surrounded. The on / off state of a specific dot on the grid is recognized, and a 1-bit interpolation value switching selection signal corresponding to the dot state is output.
That is, for example, as shown in FIG. 4, four dots (D
0, D1, D2, D3), when only one point is off, that is, “0” (D0 shown in outline in the figure), the specific dots (Da, Db) of the surrounding grid are turned on. Recognizing the off state, Da, Db
If “1”, the corner type table (T1) as shown in FIG. 3 (d) is selected, and if at least one of Da and Db is “0”, then FIG. The interpolation value switching selection signal is output to select the oblique type table (T0) as shown in (f). In addition, the surrounding four dots (D0, D1, D2, D
In 3), when only one point is on, that is, “1” (D0 shown by a black dot in the figure), the on / off state of the specific dots (Da, Db) of the surrounding grid is further recognized, and Da , Db = “0”, a corner type table (T1) as shown in FIG. 3 (a) is selected, and if at least one of Da and Db is “1”, the An interpolation value switching selection signal is output so as to select the oblique type table (T0) as shown in FIG. 3 (e). In this way, the interpolated values of the new dots located in the dot areas of four points are further determined by the dot state of the surroundings when the dots of the four points form the specific pattern as described above. And the above interpolation table ROM
The 8-bit (0 to 255 level) interpolated value output from 58 is input to the comparator 59 and compared with the comparison value, that is, the threshold value stored in the register 36. If the interpolated value exceeds the threshold value, it means that "1", which indicates a certain dot
A level signal is output, and if the interpolated value does not exceed the threshold value, a "0" level signal indicating a meaningless dot is output.

On the other hand, after the interpolation value of 1 dot is output from the interpolation table ROM 58, the contents of the register 44 and the contents of the register 32 are added by the adder circuit 38, and the contents of the register 48 and the register 35 are added. 40, and the data of each addition result is added to the selection control circuit 49.
Under the control of the data selectors 43,
It is selected by 47 and stored in the registers 44 and 48. At this time, of the registers 32 and 35 indicating the dot step width in the main scanning direction, the register step 32 has a dot step width (dx) set in accordance with a specified scaling factor.
In the register 35, "0" is set as described above because it is the dot interpolation of the true form (or the long form or the flat form).
Therefore, the content (dot address) of the register 44 is 1
Each time the dot interpolation processing is performed, the dot step size (dx) according to the designated enlargement / reduction ratio is sequentially updated, but the contents of the register 48 are not updated as a result, and the data at the time of initial setting is retained. Each time one main scan is completed, the contents of the register 42 and the contents of the register 31 are added by the adder circuit 37, and the contents of the register 46 and the contents of the register 34 are added by the adder circuit 39. The data of the addition result is selected by the corresponding data selectors 41 and 45 under the control of the selection control circuit 49 and stored in the registers 42 and 46. At this time, the registers 31, 3 indicating the dot step width in the sub-scanning direction
4, the register step 34 has a dot step size (dy) set according to the specified scaling factor.
31 is set to "0" as described above because it is the dot interpolation of the true form (or the long form or the flat form), and therefore, the content (dot address) of the register 46 is set by one main scan. Each time it is performed, it is updated with the dot step size (dy) according to the designated enlargement / reduction ratio, but the contents of the register 42 are not updated as a result, and the data at the time of initialization is retained as it is.

In this way, interpolation values for new dot addresses are sequentially output from the interpolation table ROM 58, and the interpolation values are output by the comparator 59 to the threshold value (t
h), and new dot information is generated.

Then, the new dot information after the interpolation processing output from the comparator 59 is sequentially stored in the shift register 60 and sent to the CPU bus 12 in 1-byte units.

At this time, when the dot interpolation-processed character pattern data sent to the CPU bus 12 is written in the line buffer 18 of the print control unit 17 for printout, When an offset value within the 7-dot range is set (for example, when dot-interpolated ruby characters are printed
(i = 1,2, ..., 7) When moving down the dot), or
The number of dots in the main scanning direction of the pattern-converted character is the writing width (8 dots) of the image memory to be output.
It becomes necessary to match the byte boundary (write width) on the image memory side instead of a multiple of
In the case where the offset value (i) is set to, the offset value of the offset register 28
According to (i), offset data (i “0” s) is generated by the offset data generation unit 29, and the data is set in the shift register 60 prior to the start of main scanning.
After that, the dot-interpolated data, that is, the converted character pattern dots are written.

The above-described operation was performed when the true object (or the long object or the flat object) was output. However, for example, in the dot interpolation address generation processing when the rotary object is output, the registers 31 to 36 are All of them are set with data including, as one element, predetermined trigonometric function data in the trigonometric function table 24 associated with the designated rotation angle.

That is, when the designated rotation angle is [θ ₀ ], the number of dots in the x direction of the original font is [a + 1], and the number of dots in the y direction of the original font is [b + 1], DX1 = -dx · sin θ _{In the 0} register 32, DX2 = dx · cos θ ₀ register 34 is set, and in the DY1 = dy · cos θ ₀ register 35, DY2 = dy · sin θ ₀ is set.

Also, register 33 (X1init) and register 36 (Y1ini)
t) is (1) When 0 ° ≦ θ ₀ ≦ 90 °, X1init = 1 / 2a-1 / 2 (a + 1-dx) cos2θ ₀ (2) When 90 ° ≤ θ ₀ ≤ 180 °, Y1init = 1 / 2b + 1/2 (b + 1-dy) cos2θ ₀ (3) When 180 ° ≦ θ ₀ ≦ 270 °, X1init = 1 / 2a + 1/2 (a + 1-dx) cos2θ ₀ (4) When 270 ° ≤ θ ₀ ≤ 360 °, Y1init = 1 / 2b-1/ 2 a (b + 1-dy) cos2θ 0 is set, respectively.

As described above, set values (DX1, DX2, DY1, DY2, X1init, Y1init) such as dot step size and initial address including trigonometric function data according to the turning angle (θ ₀ ) are calculated, and the corresponding registers After being set to 31 to 36, the dot interpolation address generation processing in the main scanning direction and the sub-scanning direction as described above is sequentially executed to obtain the inversion character pattern dot according to the designated angle (θ ₀ ).

In addition, in the process of generating the dot interpolation address when outputting the slanted characters, the predetermined trigonometric function data in the trigonometric function table 24 according to the designated inclination angle is stored in a specific register of the registers 31 to 36. The data that contains as one element is set.

That is, when the specified italic angle is [θ ₀ ], the number of dots in the x direction of the original font is [a + 1], and the number of dots in the y direction of the original font is [b + 1], the range is 0 ° ≦ θ ₀ ≦ 90 °. , DX1 = dx · tan θ ₀ register 32, DX2 = dx register 34, DY1 = dy register 35 DY2 = 0 are set in the register 31, and register 33 is set in the register 33. In the register 36, Y1init = -1 / 2 (1-dy) is set.

As described above, each set value (DX1, DX2, DY1, DY2, X1init, Y1init) such as the dot step width including the trigonometric function data according to the inclination angle (θ ₀ ) and the initial address is calculated, and the corresponding registers are calculated. After being set to 31 to 36, by sequentially executing the dot interpolation address generation processing in the main scanning direction and the sub-scanning direction as described above, the italic character pattern dots that are slanted according to the designated angle (θ ₀ ) are obtained. can get.

Based on each setting value (DX1, DX2, DY1, DY2, X1init, Y1init) such as the dot step width and the initial address including the trigonometric function data according to the specified angle (θ ₀ ) as described above, Dot interpolation address generation processing for the main scanning direction and the sub scanning direction is sequentially executed, and new dot information is obtained based on the generated dot interpolation address. This new dot information is sequentially stored in the shift register 60 in the same manner as above, and is output in units of bytes (8 bits) via the CPU bus 12, for example, the print control unit 17
Is written in the line buffer 18 of

At this time, the line buffer 18 has a bit width (for example, 8 × 3 = 24 dots in the vertical direction) corresponding to the dot configuration of the normal print character height. The size of a character does not fit in the size of 24 dots, except in the case of a reduced pattern. Therefore, in such a case, at the time of the above-described register initialization, the CPU 10 also sets the specified conversion font and its angle, the enlargement / reduction ratio, etc. in order to divide the newly generated character pattern into a plurality of zones. The number of zones for the characters converted into and is calculated, data representing the number of zones is set in the register 25 for zone designation, and the contents of the register 25 are decremented (- 1) Then, the pattern data of each zone is treated as the same character pattern until the content becomes “0”. That is, for the zone designated by the zone designating register 25, continuous dot printing is designated without interposing a blank area (that is, a line interval) between the respective patterns.
An example of zone division in this case is shown in FIG.

As shown in FIGS. 7 and 8, the zone number calculating means circumscribes the converted (deformed) character from the designated rotation angle / italic angle / enlargement / reduction ratio x.
・ The size of a rectangle (including square) in the y direction is calculated, and the number of dots on each side of the rectangle that touches each other (the number of x and y dots)
To obtain the value of V
Data of size (Vsize) and H size (Hsize) can be easily recognized by setting them in the registers 21 and 22. That is, for a character converted at a certain angle, the writing (handling) of the character is performed based on a rectangular area on the horizontal / vertical lines circumscribing the character. At the time of dot interpolation processing, the number of zones can be easily obtained by dividing the H size data stored in the register 22 by the bit width “24” of the line buffer 18. , During the dot interpolation processing for display output, the V size (Vsi
The number of zones can be easily obtained by dividing the data of (ze) by the bit width “24” of one display line.

Further, by fixedly assigning arbitrary zone designation data to the zone designation register 25, image data of the designated same zone can be continuously and repeatedly developed. As a result, the character pattern deformed by the dot interpolation processing can be further printed or displayed as a modified character pattern in which a part or all of the character pattern is made redundant.

Further, the data of the V size (Vsize) and the H size (Hsize) described above are also referred to when the character pitch is set, the underline / lateral line is processed, and the like. In other words, as described above, for characters such as slant and turn obtained by dot interpolation having an arbitrary inclination angle in the scanning direction, the height (character height) and width (character width) of the entire character is the inclination angle. Further, it changes variously depending on the scaling factor added to it. Therefore, when the modified characters as described above are output as an image in a normal line and column direction (x, y direction), the character pitch and further the underline / lateral line cannot be determined by the existing fixed parameter designating means. .

Therefore, here, the circumscribing rectangle as described above is treated as the body face of the character for each processing such as character pitch and underline / lateral line. These processing means will be described below.

First, the character pitch processing operation will be described. As described above, the dot interpolation processing for one character is performed, and the newly generated dot image for one character is developed in the line buffer 18 in the print control unit 17, which is the output target ( Each time it is written), the CPU 10 determines whether or not the content (Vsize) of the register 21 has been updated. If the contents of the register 21 are not updated, the data (Vsize) stored in the register 21 plus 1/2 of the data is added to the print controller 17 as control data indicating the character pitch. It controls the pitch of the characters supplied and developed on the line buffer 18. When the contents of the register 21 are updated, the data before the update is stored in the specific register area, and the data before the update and the updated data stored in the specific register area at the time of the update are stored. The value of 1/4 of the sum of the above is further added to the updated data stored in the register 21 and is supplied to the print control unit 17 as control data indicating the character pitch, and is expanded on the line buffer 18. Control the pitch of characters.

In this way, for a character converted at a certain angle, the writing (handling) of that character is performed based on the rectangular area on the horizontal / vertical line that circumscribes the character, so The pitch between adjacent characters is determined based on the width (Vsize for printout, Hsize for display output). The same pitch control as described above is performed for the row pitch. Character pitches (CP) and line pitches (LP) for various modified characters at this time
An example of the setting of is shown in FIG.

In the pitch control described above, the pitch is always determined in consideration of the area occupied by adjacent characters (circumscribing rectangle), but in order to simplify the processing, the value of the register 21 (or register 22) at that time is simply added. You may take the control means which determines a pitch based on.

Next, the operation for outputting the underline / sideline will be described based on the circumscribing rectangle. At this time, in the case of printout, the data (Vsize) stored in the register 21 is referred to, and in the case of display output, the data (Hsize) stored in the register 22 is referred to. Here, the processing operation of the underline / sideline will be described taking the case of printout as an example. Underline / sideline control unit 23 provided in the print control unit 17
Develops an underline or side line dot on the line buffer 18 according to the underline / sideline instruction included in the print control information input via the CPU bus 12. For, it is not possible to deal with the line expansion by the normal character width. Therefore, the content (Vsize) of the register 21 is always input, and when an underline / apart line instruction is given, an underline / apart line dot pattern is generated with a line length according to the updated data content of the register 21 at that time,
A pattern is developed on the line buffer 18 corresponding to the character. FIG. 10 shows an example of underline development for various modified characters in this case.

〔The invention's effect〕

As described above in detail, according to the underline / lateral line generation device of the present invention, a character pattern having a predetermined dot matrix configuration represented by X and Y coordinates is formed by making an arbitrary designated angle in at least the main scanning direction or the sub scanning direction. In a pattern conversion mechanism that obtains a transformed character pattern that is interpolated, expanded, or slanted, calculates the length of at least one side of the circumscribed rectangular area on the XY line for the pattern-converted character. Based on the information, the number of developed dots in the X direction or the Y direction with respect to the length in the main scanning direction of the character is obtained, and the underline or side line pattern corresponding to the corresponding modified character pattern is developed according to the dot number data. With this configuration, the underline / lateral line pattern can be always developed with the optimum length for each of the modified characters.

[Brief description of drawings]

1 (a) to 1 (c) are views for explaining a conventional dot interpolation processing means, respectively, and FIG. 2 is a block diagram showing a configuration of a main part in an embodiment of the present invention, and FIG. Each of FIGS. 11 to 11 is for explaining the operation of the above embodiment,
FIGS. 3 (a) to 3 (f) are dot information (dot pattern) of one grid and four points surrounding a new dot generated by the dot interpolation process, and the level division and table of the interpolation value set in the interpolation table ROM. Figure showing the relationship with types, No. 4
The figure is for explaining the table type selection switching operation, FIGS. 5 (a) to 5 (d) are diagrams showing pattern conversion examples, and FIGS. 6 (a) and 6 (b) are for CRT display. FIG. 7 is a diagram showing the main / sub-scanning direction and the main / sub-scanning direction at the time of printout in comparison, FIG. 7 is a diagram showing the relationship of various setting data, and FIG. 8 is a character pattern-converted by dot interpolation processing. And a rectangle circumscribing the character, FIG. 9 is a diagram showing an example of setting the character pitch and line pitch for various modified characters, and FIG. 10 is a diagram showing an example of underline expansion for various modified characters. , FIG. 11 is a diagram for explaining the zone dividing means. 10 ... CPU, 11 ... Main memory (MM), 12 ... CPU
Bus, 13 ... Display control circuit (CRT-C), 14 ... Frame memory (FM), 15 ... Parallel-serial conversion circuit (PS), 16 ... CRT display section, 17 ... Print control section,
18 ... Line buffer, 19 ... Serial dot printer, 21, 22, 25, 26, 27, 28, 31, 3
2, 33, 34, 35, 36, 42, 44, 46, 4
8, 50, 54, 56 ... Register, 23 ... Underline / lateral line control unit, 24 ... Trigonometric function table, 29 ... Offset data generation unit, 37, 38, 39, 40 ... Adder circuit (ADD-A , ADD-B, ADD-C, ADD-D), 41, 43, 4
5, 47 ... Data selector, 49 ... Selection control circuit (S
C), 51 …… Kanji pattern memory (KPM), 52 …… 1
Character buffer, 53 ... bit selection circuit, 55 ... discrimination control circuit, 57 ... dot discrimination circuit, 58 ... interpolation table ROM, 59 ... comparator, 60 ... shift register.

Claims (1)

[Claims] 1. A deformed character pattern in which a character pattern having a predetermined dot matrix configuration represented by X and Y coordinates is dot-interpolated at least at an arbitrary designated angle in the main scanning direction or the sub-scanning direction, and is turned or obliquely formed. In the pattern conversion mechanism for obtaining the following, the storage means for storing the number of developed dots corresponding to the length of the pattern-converted character in the main scanning direction or the sub-scanning direction, and the corresponding modified character pattern are stored in accordance with the contents of this storage means. An underline / lateral line generation device comprising means for correspondingly developing an underline / lateral line pattern.