JPS60231266A - Dot interpolation control system - Google Patents

Abstract

PURPOSE:To treat a character pattern expanded on an image memory as one character to attain dot expansion even if said character pattern exceeds a regulated line width by dividing a deformed character which is expanded, rotated or inclined into zones in each prescribed dot width to expand the image. CONSTITUTION:Dotted width (dx) based upon a specified expanding/contracting magnification is set up in a register 32 out of registers 32, 35 indicating dotted width in a main scanning direction, but ''0'' is set up in the register 35 because of the dot interpolation of an erect form (or a longitudinal form, a flat form). Therefore, the contents (dot addresses) of a register 44 are sequentially updated with the dotted width (dx) based upon the specified expanding/contracting magnification in each one-dot interpolation processing. The contents of a register 48 are not practically updated and data obtained at the initializing are held as they are. Interpolation values for new dot addresses are successively outputted from an interpolation table ROM 58 and each interpolation value is compared with the threshold value (th) of a register 50 by a comparator 59 to form new dot information.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a dot interpolation control method used in document creation devices, character output devices, etc. that handle character font information in a dot matrix structure. Problem] In a device that handles character fonts with a specified dot matrix structure, such as a document creation device, when providing a function that can enlarge or reduce the character fonts with a specified dot matrix structure at a specified magnification, the conventional Now, let's look at Figure 1 (
, ) to (b), the original character pattern dot!
Simply add or delete dots from Id...
A so-called simple scaling method was adopted.

Although conventional enlarging/reducing methods like this can be realized relatively easily and inexpensively, for example, the step-like formation (constriction) in the diagonal line area is conspicuous, and the outputted zo-turn shape is not the original expression. This has the disadvantage that the character form deviates from the intended character form, resulting in an unnatural character expression that is difficult to recognize.

In addition, in the conventional dot interpolation means as described above, it is possible to obtain a modified character by slanting or rotating the original character image or character turns with an arbitrary enlargement/reduction ratio at an arbitrary angle. If this cannot be easily obtained and the range of transformation is significantly restricted, the converted character pattern will be distorted, the conversion accuracy will be significantly reduced, and high fidelity cannot be achieved. There was an inconvenience that it was not possible to perform turn conversions.

In addition, for deformed characters such as transliteration characters and italic characters as described above, the character width and/or height of the dot-interpolated character is set to the specified enlargement/reduction ratio, Furthermore, it changes variously depending on the angle, etc., and especially when enlarging, expanding, slanting, etc., the converted dot image for one character is stored in the image storage area for one line (e.g. image line buffer). In normal character output means, a part of the character is so-called missing, and the character is separated and output across multiple lines, which is inconvenient in handling the character image. Furthermore, when it is desired to repeat an image of the same slice width multiple times and print it out, for example, there has been a functional inconvenience in that it is not possible to respond to this request.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and when the original character font is transformed by dot interpolation processing at an arbitrary magnification, angle, etc., the character pattern developed on the image memory is created in a specified line. The purpose of this invention is to provide a dot interpolation control method that can treat a character pattern as a single font even if it exceeds the width, and can dot development of any partial image any number of times in succession. [Summary of the Invention] The present invention provides character 1? of a predetermined dot matrix structure. In a dot interpolation device that performs dot interpolation of turns at least in the main scanning direction or the sub-scanning direction, a dot interpolation address in the main scanning direction represented by an X component and an
means for generating interpolated dots based on a dot interpolation address in the sub-scanning direction represented by a component; a zone specifying means for dividing the generated interpolated dot information into zones having a slice width of a predetermined dot unit; means for controlling transfer of image data of a zone specified by the zone specifying means, and image development is performed by dividing enlarged, rotated or diagonalized characters into zones each having a predetermined dot width; What I have done is that when the original character font is transformed by dot interpolation processing, with arbitrary magnification, angle, etc., even if the character pattern developed in the image or memory exceeds the specified line width, The 41 turns of that character can be treated as one font and can be developed into dots, and any partial image can be developed into dots any number of times in succession.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a circuit block diagram showing one embodiment of the present invention. In the figure, 10 is a CPU that controls the entire system, 77
The expanded main memory (MM), I2, is the CPU path. 1
3 is a display control circuit (CRT-C), 14 is a frame memory (FM), 15 is a serial conversion circuit, 1
6 is a CR7 display section, I7 is a print control section, 18 is a line buffer, and 19 is a serial dot printer.

21 is a size (Vsize) corresponding to the width in the sub-scanning direction (main scanning interval x number of times) after conversion at the time of pattern conversion.
), and 22 is a register representing the size ( ) Islze ) corresponding to the width in the main scan direction.

23 generates an underline and sideline dot pattern with a length according to the contents of the register 21, and the line buffer 18
This is an underline/sideline control section to write to. Reference numeral 24 denotes a trigonometric function table that stores angle information (trigonometric function data) corresponding to specified angles for slanting, rotating, etc. characters. Reference numeral 25 is a zone designation register for dividing characters/turns after conversion processing that exceed the standard character height into zones in units of the standard character height during pattern conversion. 26 and 27
is the dot step width (dx) according to the character enlargement/reduction magnification.

dy) and a register, 28 is an offset register for selectively giving an offset in the range of 0 to 7 dots to the pattern-converted character, and 29 is an offset register Z80 that stores offset data with the number of dots according to the offset value. ('o'' representing non-display).

31 to 49 each constitute a component for generating a dot interpolation address; 31 is a register for storing the dot increment width (DXI) in the sub-scanning direction including the X component;
2 is the dot step width in the main scanning direction including the X component (DX2)
Register 1, 'I3, which stores , is the initial value in the main scanning direction including the X component (initial address;
34 is a register that stores the dot increment width (DYI) in the sub-scanning direction including the X component, 35 is a register that stores the dot increment width (DY2) in the main scanning direction including the X component, and 36 is a register that stores the X component. This is a register that stores an initial value (initial address: Yl 1nit) in the sub-scanning direction. The dot interpolation addresses stored in the registers 31 to 36 each consist of integer part data and decimal part data.

37 is an addition 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 including the X component; 38 is the register 32;
and the contents of the register 44 indicating the dot position in the main scanning direction including the X component (ADD-B).
, J9 is an adder circuit (ADD-C) that adds the contents of the register 34 and the contents of the register 46 indicating the 9 bit position in the sub-scanning direction including the X component, and 40 is the register 35.
An addition circuit (ADD-D) adds the contents of the register 48 and the contents of the register 48 indicating the dot position in the main scanning direction including
).

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 adder circuit 37 every time - times of main scanning are performed.
2 is a register for storing a new dot at the time of dot interpolation expressed 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 main scanning. Thereafter, the data selector 44, which selects the output of the adder circuit 38 for each interpolation process for one dot, is a register that stores a new dot address at the time of dot interpolation including the X component selected by the data selector 43. 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 every time - times of main scanning is performed; 46 is a data selector 45; A register 47 stores a new dot address at the time of dot interpolation, which is expressed by an integer part and a decimal part including the selected X component. The register 47 selects the contents of the register 46 at the start of main scanning, and thereafter performs interpolation for one dot. A data selector selects the output of the adder circuit 40 for each process, and 48 is an X selected by the data selector 47.
This register stores a new dot address during dot interpolation including components. 49 is each data selector 41,
This is a selection control circuit (SC) that controls 43, 45.4'l.

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

51 is a predetermined dot matrix unit (16X1
This is a Kanji pattern memory (KPM) in which character pattern data of 6 dots) is stored.

Reference numeral 52 denotes a single character buffer composed of a high-speed RAM that stores four turns of one character (dot) read out from the kanji pattern memory 51; It is stored in a state where it is filled with a bit pattern of 0''). 53 is a bit selection for selectively outputting dot information of the four grid points surrounding a new dot according to the value of each integer part of registers 44 and 48 among the character pattern data stored in the single character buffer 5z. It is a circuit. Reference numeral 54 is a register for storing 4-bit information output from the bit selection circuit 53.

55 to 57 are dot/arm/turn recognition units (DSP) that recognize the dot information/turns output from the bit selection circuit 53 and selectively switch and control the interpolated value of a new dot surrounded by four dots. ) (7) A component 55 recognizes the dot pattern state of four points from the contents of the 540-bit register, and when it is in a specific dot pattern state or turn state, which will be described later, it also recognizes the dot pattern state of two specific dot patterns around it. 56 is a register that stores the 4-bit information read out under the control of the determination control circuit 55; 57 is a register that is read out under the control of the determination control circuit 55; This is a dot discriminating circuit that outputs a 1-bit interpolation value switching selection signal according to the drastic difference between the dot information for two grids obtained and the dot information in the register 54 and the turn state.

58 is the value of the decimal part stored in the register 44 (the main scanning direction offset value including the 5-bit X component) and the register 5
4 points of dot information stored in 4 and dot discrimination circuit 57
An interpolation table ROM that outputs an interpolated value (Qxy) of a new dot within the area surrounded by the four dot information, using as input information a frequently outputted 1-bit interpolated value switching selection signal. Yes, here we have 256 bits (32
KX, 8 bits) mask ROM is used to perform the above-mentioned 15
According to the bit read address, 8 bits (0 to 255
output the interpolated value of level).

Reference numeral 59 is a controller that compares the interpolated value output from the interpolation table ROM 5B with the threshold value stored in the register 50, and when the interpolated value exceeds the comparison value, that is, the threshold value, an on-dot (brightness) is detected. point), outputs a bell signal. 6o is a memo that sequentially stores the dot information output from Konnoyashi 7-ta 59 and develops the character glossy turn! jcl? shift output on CPU path 12 for each included bit unit (in this case, 8 bit unit)
There is an L/register.

3 to 11 are diagrams for explaining the operation of the above-mentioned embodiment, respectively.

Figures 3 (,) to (f) respectively show the dot information (dot pattern) of four points in one grid surrounding a new dot generated by the interpolation process and the interpolation values set in the interpolation table ROM 5B. It is a diagram showing the relationship between level divisions and table types. Here, interpolated values are expressed in luminance levels (brightness levels) in 0 to 255 steps, and some of the divided areas are shown in uniform heights.

Figure 4 shows one of the four dot patterns in one grid.
This is to explain an example of table type selection switching when only the dot is on ('1'') or off (0'').
Dot (Do.

When only one point among D I +-02, D 3 ) is off, that is, "o" (Do shown in white in the figure), the specific driver) (Da of the surrounding grid) is off.

Recognize the on/off state of Da, Db)
If = ``1'', a corner type table (TI) as shown in Figure 3(d) is selected, and if at least either Da or Db is ``0'', then (f)
Select a diagonal type table (TO) as shown in . In this way, the interpolated value of a new dot located within the dot area of 4 points is determined by the Pt state of the surroundings when the 4 points form a specific pattern as described above. It will be done.

5(-) to (d) show various examples of 29-tank conversion, in which Sm indicates the main scanning direction, S8 indicates the sub-scanning direction, and FIG. 5(a) shows the true (or long) Figure (b) shows an italic type, Figure (C) shows a bottom-aligned italic type, and Figure (d) shows a rotating body.

Figures 6 (IL) and (b) explain the relationship between the output target of dot interpolation processing, that is, the image output target, and the main scanning direction (Sm) and sub-scanning direction (Sg) during dot interpolation. Figure (a) shows the main scanning and sub-scanning directions during dot interpolation during CR7 display, and Figure (b) shows the main scanning and sub-scanning directions during dot interpolation during printout. Each indicates the direction of sub-scanning.

In this manner, the dot interpolation processing during CRT display output and the dot interpolation processing during printout result 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 each set of data.

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

FIG. 9 is a diagram showing examples of character pitch (cp) and line pitch (LP) settings for various modified characters.

FIG. 10 is a diagram showing examples of development of underlines for various modified characters.

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

Here, the operation of one embodiment will be explained. During dot interpolation, the CPU 1o initializes various registers according to dot cross section designation information inputted from the outside. That is, the CPU 10 sets a comparison value, that is, a threshold value (th) for comparison with the interpolated value generated by the interpolation table ROM 58, in the register 50, and then sets the reference dot according to the designated scaling factor. Step size (dx, dy
”.

Calculate the reciprocal value of the scaling factor) and store it in register 2.
6.27, and when rotating or italicizing, set the trigonometric function data (dn, CO3, t
an) is set in the trigonometric function table 24. After that, these registers 26 and 27 and the trigonometric function table 2
4 setting data (gtn.

Based on ωS, -), the initial value (initial address;
lnit), and dot step width (DXI, DYI.

DX2. DY2), set these data in registers 31 to 36, and perform expansion, rotation, etc.
V size and H size data (Vsize, H
size) is calculated and set in the registers 21 and 22. Furthermore, when zoning occurs, the number of zones is calculated and this data is set in the register 25. Furthermore, the dot-interpolated characters are set to 1 to 71 when they are output.
When moving within the dot range (for example, when moving dot-interpolated ruby characters, gyu-kaku characters, etc. up and down within the range of 1 to 7 dots when printing out),
Or, the number of dots in the main scanning direction of the character that has been converted into a number is not a multiple of the writing width (8 dots) of the image memory that is the target of the output, and it becomes necessary to align it with the byte boundary (writing width) on the image memory side. In such cases, an offset value within the range of 1 to 7 dots is set in the offset register 28.

After completing the initial settings of each register as described above,
PUZO starts the following dot interpolation address generation process.

Here, we will first explain the overall operation of the system, taking as an example the case where dot interpolation is performed on a true body (or long body, or half body) as shown in Figure 5 (,) (for example, simple enlargement/reduction). Explain. During this dot interpolation, the register 31
, roj, the dot step width "dx" in the register 32, and the initial value r sx in the main scanning direction (Sm) in the register 33.
J, the dot step width "dy" is set in the register 34, "O" is set in the register 35, and the initial value r sy J in the sub-scanning direction (Ss) is set in the register 36, respectively.

Here, the dot step width (ax, dy) set in the registers 32 and 34 is given as an inverse value of the enlargement/reduction magnification. Also, in the register 33, (IX=(dx-1,
)/2 :) is given as an initial value (8x), and the register 36 is given Iy as an initial value (8y), which is (Iy=(dy −1)/2), and dx Or dy is “1”
'' or less (i.e., when expanding), Ix or Iy becomes negative and indicates an address outside the original character pattern storage area of the one-character buffer 52, and when dx or dy is greater than or equal to "1" (i.e., when reducing) IX or Iy becomes positive and indicates an address within the original character/turn storage area of the one character buffer 52.

Also, the register 50 contains an arbitrary level (0 to 0) which is used to compare the interpolation value outputted from the interpolation table ROM 5B and determine whether a new dot that is above the falling level is considered a meaningful dot. 255 level) comparison value, that is, the threshold value (
th ) is set.

Furthermore, the CPU 10 reads out one character's worth of dot/turn data to be subjected to dot interpolation from the kanji pattern memory 61, and stores this character pattern data in the one character buffer 5.
Write in 2. At this time, as described above, the character buffer 52 contains one character worth of dots to be interpolated.
The 4-turn data is stored surrounded by meaningless tOH dots.

After setting the data to the registers 31 to 36 and taking out the interpolation target character A' turn to the one-character buffer 52, under the control of the selection control circuit 49, the register 3
．． ? , 36 and becomes the initial dot address (sx.

ay) are selected by selection circuits 41.45 and stored in corresponding registers 42.46, respectively. Furthermore, at the start of main scanning, the data (sx, sy) stored in the registers 42.46 are selected by the selection circuit 43.4''i and stored in the corresponding registers 44, 411, respectively.

The data (sx, m
y), the value of the integer part is given to the bit selection circuit 53, and the value of the decimal part is given to the interpolation table ROM 58.

The bit selection circuit 53 selects the dot information of four points in one grid from the one character buffer 52 based on the value of the input integer part, and supplies it to the interpolation table ROM 6B.

At this time, when enlarging (dx, dy.

In <1), since the bit selection circuit 53 is given a negative value indicating an address outside the original character/mother turn storage area of the one character buffer 52, the dot outside the original character/mother turn storage area is Dot selection is started from the dot information of 4 points in 1 grid including .

Furthermore, at the time of reduction (dx, dy) i), a positive value indicating an address within the original character pattern storage area of the one-character buffer 52 is given to the bit selection circuit 53;
υ dot selection is started based on the dot information of four points in one grid in the original character/mother turn storage area.

The interpolation table ROM 5B is stored in the register 44°4.
As input information, each offset value from 8 (total 10 bits), dot information of the surrounding four points from the bit selection circuit 53, and a 1-bit interpolation value switching selection signal from the dot pattern recognition section (DSP) are input. An 8-bit interpolated value (Qxy) according to the content is output. At this time, the bit selection circuit 5
The dot pattern of 4 points per lattice outputted from 3 is recognized by the driver turn recognition unit (DSP), and as shown in FIG. The on/off state of a specific dot 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.
9 points) (DO.

DI, D2. Among Da), only one point is off, that is, II
071 (DO shown in white in the figure), further recognizes the on/off state of the specific driver (Da, Db) of the surrounding grid, and if Da, Db=''1#, Corner type chi as shown in Figure 3(d)
k (TI), and if at least one of Da and Db is IO", the interpolated value is Outputs the switching selection signal.Also, the surrounding 4 dots (
DO, DI, D2. When only one point of Da) is on, that is, ``1'' (DO indicated by a black dot in the figure), the specific dots of the surrounding grid (Da, Db) are turned on.
If the off state is recognized and Da, Db=''0#, a corner type table (
TI) is selected, and if at least one of Da and Db is '1#', the interpolated value is selected to select a diagonal type table (TO) as shown in Figure 3 (6). Outputs a switching selection signal. When the four dots form a specific pattern as described above, the interpolated value of a new dot located within the four dot area is further determined by the state of the surrounding dots. Then, the 8 bits (0 to 255
The interpolated value of level) is input to the controller 59,
is compared with a comparison value or threshold value stored in a register 36;
If the interpolated value exceeds the threshold, a '1'' level signal is output, indicating that the dot has meaning, and if the interpolated value does not exceed the threshold, it indicates that the dot has no meaning. It outputs a signal at the It Ofir level, as shown in FIG.

On the other hand, after the interpolation value of one dot is output from the interpolation table ROM 5B, the contents of the register 44 and the contents of the register 32 are added by the adder circuit 38, and L/
The contents of register 8 and the contents of register 35 are added to adder circuit 4.
0, and the data of each addition result is selected by the corresponding data selectors 4, V, 4r under the control of the selection control circuit 49, and stored in the register 4.
4. Stored at 413. At this time, among the registers 32 and J5 indicating the dot increments in the main scanning direction, the dot increments (dx) according to the specified scaling factor are set in the register 32, but in the register 35, Since this is a dot interpolation of a real body (or a long body, or a half body), "0" is set as described above, and therefore, register 4 is set to 0.
The contents of 4 (dot address) are the dot step width (dx
), but the contents of the register 4B are not updated as a result and the data at the time of initial setting is held as is. Furthermore, each time one main scan is completed, the contents of the register 42 and the contents of the register 31 are added together by the adder circuit 37, and the contents of the register 46 and the content of the register 340 are added by the adder circuit 39. The data resulting from the addition are selected by the corresponding data selectors 41 and 46 under the control of the selection control circuit 49, and stored in the register 42-6. At this time, of the registers 31 and 34 indicating the dot increments in the sub-scanning direction, the dot increments (dy) according to the specified scaling factor are set in the register 34; Since this is a dot interpolation of (or a long body or a half body), "0" is set as described above. Therefore, the contents of the register 46 (dot address) are changed every time one main scan is performed. It is updated with a dot step width (dy) according to the specified scaling factor, but the register 42
As a result, the contents are not updated and the data at the time of initial setting is maintained as is.

In this way, the interpolated value for the new dot address is sequentially output from the interpolation table ROM 5B, and this interpolated value is output from the controller/mother rake 59 to the register 50.
0 threshold (th) and new dot information is generated.

The interpolated new dot information outputted from the comparator 59 is sequentially stored in the shift register 6θ and sent onto the CPU bus 12 in 1-byte units.

At this time, the character pattern data that has undergone dot interpolation processing and is sent out onto the CPU path I2 is written to the line buffer 18 of the print control unit 17 for printing out, for example, and the offset register 28 is filled with 1 to 1. 7
If an offset value within the dot range is set (
For example, if a ruby character that has undergone dot interpolation is moved downward by 1 (1 = 1.2..., 7) dots when printing out), or if the number of dots in the main scanning direction of the pattern-converted character is It is not a multiple of the write width (8 bits) of the target image memory, and it is necessary to match it with the byte boundary (write width) on the image memory side, and the offset value (1) is set in the offset register 28. In some cases, the offset register 28
According to the offset value (1), offset data (one 0#) is generated by the offset data generation unit 29, and the data is stored in the shift register 6 prior to the start of main scanning.
It is set to 0, and then the dot interpolated data, that is, the four-turn dot of the converted character, is written.

The above operation was performed when a real body (or a long body, or a half body) was the output target, but when the output target was a rotating body, for example, during the dot interpolation address generation process, registers 31 to 36 were All are set with data in which predetermined trigonometric function data in the trigonometric function table 24 according to the specified rotation angle is included as one element.

In other words, the specified rotation angle is [θo], and the original font's
Assuming that the number of dots in the direction is [a+1] and the number of dots in the X direction of the original font is [b+1], the register 31 stores DX1=
-dx-co θ0 register 32 contains DX2=dx-co
sθ.

In the register 34, DY1=dy-cos θ0, and in the register 35, DY2=dy-s stone θ0 is set.

Also, register 33 (XI) and register v
6 (Yl knit ), (1) When 0°≦00≦90°, y −mln2θO dx (2) When 90≦00≦180°, Xi 1nt=a+−(1−dx )−(3 ) 1so
When °≦00≦270°, (4) 270°≦60≦3
600, set respectively.

As described above, each setting value (DXl, DX2.DYI) including the trigonometric function data according to the rotation angle (θ0), the dot step width, the initial address, etc.

After calculating DY2, A rotated character pattern dot according to the angle (θ0) is obtained.

Also, when generating a dot interpolation address when an oblique character is to be output, a predetermined trigonometric function in the trigonometric function table 24 according to the specified slope angle is stored in a specific register among the registers 71 to 36. Data containing data as one element is set.

That is, the specified italic angle is [θo], and the original font's
If the number of dots in the direction is [a+1] and the number of dots in the X direction of the original font is (b+1), then in the range of 0°≦00≦90°, register 3I contains DXl-dx・-〇G register 32
, DX2=dx is set in the register 34, DY1=dy, DY2-0 is set in the register 35, and X11nit= is set in the register 33; Y11nit= is set in the register 36.

As described above, each setting value (DXI, DX2.DYi) including the trigonometric function data according to the inclination angle (θ0), the dot step width, the initial address, etc.

DY2, Xi 1nlt, Yl 1nlt) and set them in the corresponding registers 31 to 36, and then sequentially executes the dot interpolation address generation process in the main scanning direction and the sub-scanning direction as described above. An italic character pattern dot is obtained which is oblique according to the angle (θ0).

Each setting value (DXI, DX2.DYI, ・DY2, XI I
n1t, Yl 1nit), the dot interpolation address generation processing for the main scanning direction and the sub-scanning direction as described above is executed sequentially, and new dot information is generated based on the generated dot interpolation address. obtain. This new dot information is sequentially sent to the shift register 6o in the same way as above.
CPU bus 12 is stored in bytes (8 bits).
The data is written to the line buffer Z8 of the print control unit z2, which is the output target, for example.

At this time, the line buffer 18 is configured with a bit width corresponding to the dot configuration of the normal printed character height (for example, 8 x 3 vertically = 24 dots). , it cannot fit into the size of 24 dots except in the case of 4 turns of reduction. Therefore, in such a case, during the register initialization described above, in order to divide the newly generated character nosoturn into multiple zones, the CPU zo The number of zones for the converted character is calculated based on the above, and the data representing this number of zones is set in the register 25 for zone specification, and the register 25 is The pattern data of each zone is treated as the same character/4' turn until the content is decremented (-1) and the content becomes "O". That is, for the zone designated by the zone designation register 25, continuous dot printing is designated without intervening a blank area (02p (line interval)) between each row. An example of zone division at this time is shown in FIG.

As shown in FIGS. 7 and 8, the zone number calculation means calculates the x
'Find the size of the rectangle (including squares) in the y direction, and calculate the number of dots on each of the two sides of the rectangle that touch each other (the number of x-y dots)
This can be easily recognized by setting this in the registers 21 and 22 as V size (Vslze) and H size (Hslze) data during the register initialization described above. In other words, for characters converted with an angle of
This is done using a rectangular area on the horizontal and vertical lines circumscribing the character as a pace. For example, during dot interpolation processing during printout, H size (Hglze) data stored in the register 22 is used as a pace. By dividing by the bit width "24" of the line buffer 18,
The number of zones mentioned above can be easily set, and during the dot interpolation processing during display output, the data of V size (Vsjze) stored in the register 21 can be converted to the bit width of one display line. The number of zones can be easily calculated by dividing by 24.

Further, by fixedly assigning arbitrary zone designation data to the zone designation register 25, image data of the same designated zone can be repeatedly developed into an image. According to this, the letter J? transformed by the above-mentioned interpolation process? The turn can also be printed or displayed as a modified character pattern in which part or all of the turn is made redundant.

In addition, the above-mentioned V size (Vsize), H size (I(
The data of ``site'' is also referred to when setting the character pitch, processing underlines/sidelines, etc. In other words, the slanted, inverted, etc. characters obtained by dot interpolation with an arbitrary inclination angle in the scanning direction as described above have a height (character height) and a width (character width) of the entire character depending on the inclination angle. Furthermore, it changes variously depending on the enlargement/reduction magnification added to it.

Therefore, the above-mentioned modified characters can be changed to the normal line, column direction (x
-y direction), character pitch,
Furthermore, underlines/sidelines etc. cannot be defined using existing fixed parameter designation means.

Therefore, here, the above-mentioned circumscribing rectangle is treated as the dediface of the character for each process such as character pitch, underline/sideline, etc.

These processing means will be explained below.

First, the character pitch processing operation will be explained. As described above, the dot interpolation process for 1° character is performed, and the newly generated dot image for one character is expanded to the output target, for example, the line buffer 18 in the print control unit 17. (written), CPU 10 writes register 2
It is determined whether the contents (Vsize) of 1 have been updated. If the contents of the register 21 have not been updated, the data (Vsize) stored in the register 21
and 1/2 of that value is further added to the print control section I7 as control data indicating the character pitch, thereby controlling the pitch of the characters developed on the line buffer 18.

Also, when the contents of the register 21 are updated, the data before the update is stored in the specific register 2, and at the time of the update, the data before the update and the updated data stored in the specific register area are stored. The value of 1/4 of the sum of
and controls the pitch of characters developed on the line buffer 18.

In this way, for a character that has been converted with an angle of (Vs1ze1 for printout, Hslze for display output), the pitch between adjacent characters is determined. The same pitch control as described above is also performed on the row pitch.

Character pitch (CP) for various modified characters at this time.

An example of setting the line pitch (LP) and line pitch (LP) is shown in FIG.

In addition, in the pitch control described above, the pitch is determined while always considering the area occupied by adjacent characters (circumscribed rectangles), but in order to simplify the process, the pitch is simply determined by the value of register 21 (or register 22) at the time. Control means may be used to determine the pitch based on.

Next, the operation when outputting underlines/sidelines will be explained based on the above-mentioned circumscribed rectangle. At this time, in the case of cylinder out, the data stored in the register 21 (Vsiz
+e) is referenced, and in the case of display output, data (Hsize) stored in the register 22 is referenced. Here, the underline/sideline processing operation will be explained using the case of printout as an example. The underline/side line control unit 23 provided in the print control unit 17 develops underline or side line dots on the line buffer 18 according to the underline/side line instructions included in the print control information input via the CPU path 12. But,
The above-mentioned deformed characters, such as inversion and italics, cannot be handled by line expansion using the normal character width. Therefore, the contents of register 2 (Vslzs) are constantly input, and when there is an underline/sideline instruction, an underline/sideline image is generated with a line length according to the updated data contents of register 21 at that time, and the line buffer 18 Expand 4 turns by matching the letters above. FIG. 10 shows an example of development of underlines for various modified characters at this time.

〔Effect of the invention〕

As described in detail above, according to the present invention, in a dot interpolation device that performs dot interpolation of a character pattern having a predetermined dot matrix structure in at least the main scanning direction or the sub-scanning direction,
Means for generating interpolated dots based on a dot interpolation address in the main scanning direction represented by a component and a y component, and a dot interpolation address in the sub-scanning direction represented by an X component and a y component, and the generated interpolation A method for enlarging,
Alternatively, by developing a structure in which transformed characters that have been rotated or oblique are divided into zones of a predetermined dot width and developed as images, the original character font can be transformed with arbitrary magnification, angle, etc. through dot interpolation processing. Even if the character pattern developed on the image memory exceeds the specified line width,
That letter J? It is possible to treat a turn as one font and develop it into dots, and also to develop one arbitrary partial image into dots any number of times in succession.

[Brief explanation of drawings]

FIGS. 1(a) to (c) are diagrams for explaining conventional r7 interpolation processing means, respectively, and FIG. 2 shows the configuration of essential parts in an embodiment of the present invention! Figures 2 and 3 to 11 are for explaining the operation of the above embodiment, and Figures 3 (,) to (f) respectively show new dots generated by dot interpolation processing. Figure 4 shows the relationship between the dot information (dots and turns) of 4 points in one grid surrounding , the level classification of the interpolation value set in the interpolation key ROM, and the table type. Figure 4 explains the table type selection switching operation. Figures 5 (a) to (d) are diagrams showing examples of Noreen conversion, respectively, and Figures 6 (a) and (b) are diagrams showing the main and sub-scanning directions when displaying on a CRT and when printing out. Figure 7 is a diagram showing the relationship between various setting data, and Figure 8 is a diagram showing a character converted into a Zino mother turn by dot interpolation processing and the circumference of the character. Figure 9 shows examples of character pitch and line pitch settings for various modified characters; Figure 10 shows examples of underline development for various modified characters; Figure 11 shows zone divisions. is a diagram for explaining the means. 10...CPU, 11...Main memory (MM),
12...CPU node, 13...Display control circuit (C
RT-C), 14...Frame memo IJ (FM),
l 5...Nogular serial conversion circuit (p-s)
, 16... CRT display section, 17... Print control section, 1
8... Line buffer, 19... Serial card, printer, 21.22° 25.26, 21.2B, 31.
32.33°34.35,36,42,44.46,4
11゜50.54.56・t register, 23...underline/sideline control section, 24...trigonometric function table, 29・
...Offset data generation section, 37.3B, 39°40
...Addition circuit (ADD-A, ADD-B,
ADD-C. ADD-D), 41.4B, 45.41... data selector, 49... selection control circuit (SC), 51.
...Kanji Noguturn Memo IJ (KPM), 52...
・One character nototsufa, 53...Bit selection circuit, 55
...Discrimination control circuit, 57...P, G discrimination circuit, 58
...Interpolation tape kROM, 69...Comparator,
60...Shift register. Applicant's representative Patent attorney Takehiko Suzue Figure 1 II 3 Figure 5 Figure 6 (a) (b) Figure 7 Figure 8 Figure 9 Figure 10 Figure 11

Claims (1)

[Claims] In a dot interpolation device that performs dot interpolation on a character pattern having a predetermined dot matrix structure in at least the main scanning direction or the sub-scanning direction, a dot interpolation address in the main scanning direction represented by an X component and a y component is generated, and an X component is interpolation dot address generation means for generating a dot interpolation address number in the sub-scanning direction represented by and y component; and interpolation dots at coordinate points according to the respective dot interpolation addresses generated by the interpolation dot address generation means. An interpolation dot generation means, a zone specification means for dividing the interpolation dot information generated by the interpolation dot generation means into zones with a slice width of a predetermined dot unit, and image data of the zone specified by the zone specification means is transferred. What is claimed is: 1. A dot interpolation control method, comprising: a control means for dividing enlarged, rotated or oblique modified characters into zones each having a predetermined dot width and developing the image.