JPH046554B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention has a character font size conversion function based on a dot matrix structure, and is applicable to document processing mechanisms such as document creation devices and character input/output devices that handle documents in page units. The present invention relates to a character processing device used.

[Technical background of the invention and its problems]

In a document processing device, the number of lines per page and the number of characters per line are determined by the paper size, character pitch, line pitch, etc., and the optimal character pitch and line pitch are determined from the relationship with the character size. Ru. on the other hand,
The technology disclosed in Japanese Patent Application No. 1986-86371, entitled "Dot Interpolation Control System" filed by the present applicant, enables characters to be enlarged or reduced at any magnification, allowing the operator to It became possible to use fonts of different sizes. In that case, even if the paper size is the same, the number of lines per page and the number of characters per line will naturally vary depending on the font size used. Previously, methods for recognizing the number of lines and characters based on differences in paper size were considered, but
No consideration had been given to calculating the number of lines and characters based on differences in font size, and to notifying the operator.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a character processing device that allows an operator to easily recognize changes in the number of lines and characters due to differences in character size using existing hardware.

[Summary of the invention]

The present invention provides a document processing device having a font size conversion mechanism, which includes means for calculating the number of developed lines and characters per page from the font size conversion magnification, its character pitch, and line pitch. The calculated number of lines and characters is clearly shown to the operator by displaying a mark on an existing display device or other display such as a numerical value. etc., various document processing tasks can be carried out easily and quickly.

[Embodiments of the invention]

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

FIG. 1 is a block diagram showing the overall system configuration in one embodiment of the present invention. In the figure, 10 is a CPU that controls the entire system, 11 is a main memory (MM), and 12 is a CPU bus. 13 is a display control circuit (CRT-C), 14 is a frame memory (FM), 15 is a parallel-serial conversion circuit,
16 is a CRT display section, 17 is a print control section, 18 is a line buffer, and 19 is a serial dot printer. Further, 51 is a character font memory, 80 is a dot interpolation control section (FTL), 90 is a keyboard control section, and 91 is a keyboard. Details of the dot interpolation control section 80 are shown in FIG.

FIG. 2 is a block diagram showing the structure of the dot interpolation control section 80 shown in FIG. 1 above. In the figure, 2
1 is a register representing the size (Vsize) corresponding to the width in the sub-scanning direction after conversion (main scanning interval x number of times) during pattern conversion, and 22 is a register representing the size (Hsize) corresponding to the width in the main scanning direction. This is a register that represents the Reference numeral 23 denotes an underline/sideline control section which generates an underline/sideline dot pattern having a length according to the contents of the register 21 and writes it into the line buffer 18. 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 denotes a zone designation register for dividing the converted character pattern exceeding the standard character height into zones in units of the standard character height during pattern conversion. 26 and 27 are registers for storing the dot increments dx and dy according to the character enlargement/reduction magnification; 28 is an offset register for selectively giving an offset in the range of 0 to 7 dots to the pattern-converted characters; Reference numeral 29 denotes an offset data generation unit that generates offset data (“0” indicating non-display) with the number of dots according to the offset value of the offset register 28.

31 to 49 each constitute a component for generating a dot interpolation address, and 31 is x
A register that stores the dot step size DX1 in the sub-scanning direction that includes the x component, 32 a register that stores the dot step width DX2 in the main scan direction that includes the x component, and 33 a register that stores the dot step width DX2 in the main scanning direction that includes the x component.
A register that stores the initial value in the main scanning direction (initial address; A register 36 stores the step width DY2, and a register 36 stores an initial value (initial address; Y1 init) in the sub-scanning direction including the y component. The dot interpolation addresses stored in the registers 31 to 36 each consist of integer part data and decimal part data.

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 including the x component, and 38 is a main scanning circuit including the contents of the register 32 and the x component. An adder circuit (ADD-B) 39 adds the contents of the register 44 indicating the dot position in the direction and the contents of the register 46 indicating the dot position in the sub-scanning direction including the y component. An adder circuit (ADD-C) 40 is an adder circuit (ADD-C) that adds the contents of the register 35 and the contents of a register 48 indicating the dot position in the main scanning direction including the y component.
-D).

41 is a data selector that 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 one main scan is performed; 42 is a data selector 41; A register 43 stores a new dot address at the time of dot interpolation, which is represented by an integer part and a decimal part including the selected x component, and selects the contents of the register 42 at the start of main scanning, and thereafter performs interpolation for one dot. A data selector 44 selects the output of the adder circuit 38 for each process, and is a register that stores a new dot address during dot interpolation that includes the x component selected by the data selector 43. A data selector 45 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.
6 is a register that stores a new dot address during dot interpolation, which is expressed by an integer part and a decimal part, including the y component selected by the data selector 45. 47 is a register that selects the contents of the register 46 at the start of main scanning, and thereafter stores the new dot address at the time of dot interpolation. , adding circuit 4 for each interpolation process for one dot.
A data selector 48 which selects an output of 0 is a register that stores a new dot address during dot interpolation that includes the y component selected by the data selector 47. 49 is each data selector 41, 4 mentioned above.
Selection control circuit (SC) that controls 3, 45, and 47
It is.

Reference numeral 50 is a register for storing a comparison value, ie, a threshold value (th), for comparison with an interpolated value to be described later.

Reference numeral 51 denotes a character font memory in which character pattern data in a predetermined dot matrix unit (16×16 dots) including Chinese characters is stored. Reference numeral 52 denotes a single character buffer composed of a high-speed RAM that stores the dot pattern for one character read out by the character font memory 51. Here, the dot pattern for one character is surrounded by off-dots ("0"). It is stored filled with bit patterns. 53 is a bit selection circuit that selectively outputs dot information of four points in one lattice surrounding a new dot according to the values of the integer parts of registers 44 and 48 among the character pattern data stored in the one-character buffer 52; be.
A register 54 stores 4-bit information output from the bit selection circuit 53.

55 to 57 are components of a dot pattern recognition unit (DSP) that recognizes the pattern of dot information output from the bit selection circuit 53 and selectively switches and controls the interpolated value of a new dot surrounded by four dots. 55 recognizes the dot pattern state of four points from the bit contents of the register 54, and when the dot pattern state is in a specific dot pattern state described later, it sequentially selects dot information for two specific grids around the dot pattern state. 56 is a register for storing 4-bit information read out under the control of the discrimination control circuit 55;
is a dot discrimination circuit which outputs a 1-bit interpolation value switching selection signal according to the dot pattern state of the dot information for two grids read out under the control of the discrimination control circuit 55 and the dot information in the register 54.

58 is the value of the decimal part stored in the register 44 (the main scanning direction offset value including the 5-bit This is an interpolation table ROM that receives the interpolation value switching selection signal as input information and outputs the interpolation value (Qxy) of a new dot within the area surrounded by the dot information of the four points. ×8
Using a mask ROM of 8 bits (0 to 255
output the interpolated value of level).

59 is a comparator that compares the interpolated value outputted from the interpolation table ROM 58 with the threshold value stored in the register 50, and when the interpolated value exceeds the comparison value, that is, the threshold value, "1" indicating an on dot (bright spot) is displayed. "Outputs a level signal. 60 sequentially stores the dot information output from the comparator 59;
CPU for each write bit unit (in this case, 8 bit unit) of the memory in which the character pattern is expanded.
This is a shift register that outputs onto bus 12.

FIGS. 3 to 6 are diagrams for explaining the operation of the above-mentioned embodiment, respectively. Figures 3a to 3c are diagrams showing the number of lines and characters that can be input on the display screen, respectively. Figure a is when standard characters are used, Figure b is when reduced characters are used, Figure c is indicates the case where enlarged characters are used. In the figure, 300 is a display screen, 301 is a format line, 302 is a guideline, 303 is an input area boundary line (paper boundary line), and S is a symbol for one character.

FIG. 4 is a diagram showing the definitions of character pitch and line pitch. In the figure, ca is character pitch, 1a is line pitch, and cfs is character font size.

FIG. 5 is a diagram showing the input area and the number of lines and digits that can be displayed on the display device itself. In the figure,
D _x is the number of digits that can be displayed, D _y is the number of matches, m is the number of digits in the input area, and g is the number of matches.

FIGS. 6a and 6b are explanatory diagrams, corresponding to FIG. 3, when the process of actually enlarging or reducing characters on the display screen is performed. In the figure, E _x is the number of dots on the horizontal side of the input area, E _y is the number of dots on the same vertical side,
P _x and P _y are the intervals of point symbol writing, and U _x and U _y are the writing center coordinate positions of the point symbols.

Here, the operation of one embodiment will be described with reference to the drawings.

First, the gist of the present invention will be described.

FIG. 3a shows the number of lines and characters that can be input when a certain size of paper is specified on the display device (CRT display section 16). In this example, you can input 8 lines x 7 characters.

By the way, if you change the paper size specification, the number of lines and characters that can be entered will change accordingly. This is a conventionally known technique.

In the present invention, when the size of the paper is kept constant and the size of the characters is changed in small increments, the display of the number of lines and characters that can be input is changed accordingly.

FIG. 3b shows a case where the characters are reduced to increase the number of lines and characters that can be input. FIG. 3e shows a case where the characters are enlarged to reduce the number of lines and characters that can be input. Here, it is assumed that the size of each character on one page displayed on the display device is always constant.

Operation of one embodiment (1) First, set the standard character font size to a ₀ dot,
Set the standard character pitch to c ₀ dots, and set the standard line pitch to l _0.
Dot.

On the other hand, when a paper of a certain size is specified, the standard number of characters (per line) m ₀ and standard number of lines (per page) g ₀ are determined.

(2) The operator gives the size or magnification of the character font to be enlarged or reduced. This designation means may use a conventional technique. For example, a "font size" key is prepared on the keyboard 91, and when the key is pressed, "how many dots?" or "how many times?" is displayed on the display screen of the CRT display section 16, and the operator desires. One possible method is to input the numerical value of .

Here, assuming that the magnification A is given, first, the character pitch and line pitch are changed accordingly (here, in the simplest case, calculation is performed in proportion to the magnification).

New character pitch c=c ₀ ×A New line pitch l=l ₀ ×A.

This determines the number of new characters m=m ₀ /A and the number of new lines g=g ₀ /A.

(3) Display the input range for the number of lines and digits of g and m found in (2).

The display itself may be performed using a known technique.

Note that in this embodiment, the font size, character pitch, and line pitch on the display screen are always kept constant even when instructions are given to enlarge or reduce the characters, and when printing, the characters are actually enlarged or reduced, and the text is adjusted accordingly. Character pitch and line pitch are also changed using proportional calculations. At this time, the following value is set for the step width of the dot interpolation control section (FTL) 80 shown in FIG.

If you want to print horizontally with simple enlargement/reduction (no rotation or slanting), set DX1=0, DX2=1/A, DY1=1/A, DY2=0.

Modification Example 1 If the display device has bitmap memory, it will immediately respond to instructions to enlarge or reduce characters.
The character pitch and line pitch are changed on the display device, and the display of the input possible area is changed accordingly. It is possible to lower or increase the density. Naturally, the input characters are actually displayed enlarged or reduced on the screen (in the example in Figure 6, the characters are enlarged 1.6 times).

In this case, the writing center coordinate position (U _x , U _y ) of the dot symbol on the left corner is U _x = 1/2P _x = 1/2・(E _x /m) (dot) U _y = 1/2P _y = It is calculated as 1/2・(E _y /l) (dot).

Here, P _x , P _y are the interval of point symbol writing, E _x ,
E _y indicates the number of dots on the vertical and horizontal sides of the input area.

Modification Example 2 In the above embodiment and Modification Example 1, the area range for character input is indicated by a dot symbol and a dotted line, but separately from this, the numerical values of the number of characters m and the number of lines g may be directly displayed on the guideline. .

Modification Example 3 In the above embodiment and modification example, m and g do not exceed the number of digits D _x and the number of lines D _y (Figure 5) that can be displayed by the display device itself, but even if they exceed When scrolling, control is performed to scroll within the range of m (column) and g (line). Control of scrolling itself is a known technique.

As described above, the operator can easily recognize changes in the number of lines and characters due to changes in character size.

〔Effect of the invention〕

As detailed above, according to the present invention, in a document processing device having a font size conversion mechanism, the number of developed lines and characters per page is calculated from the font size conversion magnification, its character pitch, and line pitch. By having a means to clearly display the calculated number of lines and characters to the operator by displaying a mark on an existing display device or displaying numerical values, etc., it is possible to Various document processing tasks such as document page layout work can be performed easily and quickly.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the system configuration in one embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the dot interpolation control section in the above embodiment, and FIGS. 3 to 6 are respectively This is to explain the operation of the above embodiment. Figures 3a and 3b are diagrams showing the number of lines and characters that can be input on the display screen, respectively, and Figure 4 is the definition of character pitch and line pitch. Figure 5 is a diagram showing the input area and the number of lines and digits that can be displayed on the display device itself. Figures 6a and b are the display areas corresponding to Figures 3a and b above. FIG. 2 is an explanatory diagram of a case in which characters are actually enlarged or reduced on a screen. 10...CPU, 11...Main memory (MM), 12...CPU bus, 13...Display control circuit (CRT-C), 14...Frame memory (FM), 15...Parallel-serial conversion circuit ( P-S), 16... CRT display unit, 17... Print control unit, 18... Line buffer, 19... Serial dot printer, 21, 22, 25, 26,
27, 28, 31, 32, 33, 34, 35, 3
6, 42, 44, 46, 48, 50, 54, 56
... Register, 23 ... Underline/sideline control section, 24
... Trigonometric function table, 29 ... Offset data generation section, 37, 38, 39, 40 ... Addition circuit (ADD-A, ADD-B, ADD-C, ADD-D),
41, 43, 45, 47...data selector, 4
9...Selection control circuit (SC), 51...Character font memory, 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, 80...Dot interpolation control unit, 90...Keyboard control unit, 91...Keyboard, 300...Display screen, 301...Format line, 302
...Guideline, 303...Input area boundary line (paper border line), S...Symbol for one character.

Claims (1)

[Claims] 1. Means for specifying the character size and indicating in advance the position at which the input character will be displayed in order to indicate the area range in which the character can be input, which is defined by the paper size. In the character processing device, the number of lines and digits of the entire set of marks is determined by keeping the intervals between the marks constant in response to changes in character size by the character size specifying means. A character processing device characterized in that a change in the number of lines and the number of digits due to a change in character size is clearly indicated by changing the number. 2. Displaying a mark to indicate in advance the position where the input characters will be displayed, in order to indicate the area range in which characters can be input as determined by the means for specifying the character size and the paper size. In the character processing device having means, in response to a change in character size by the character size specifying means, the size of the entire set of marks on the display device is kept constant, and the interval between each of the marks is adjusted. A character processing device characterized in that a change in the number of lines and number of digits due to a change in character size is clearly indicated by changing the number of lines and number of digits of the set of marks. 3. In a character processing device having a means for specifying a character size and a means for specifying a paper size, the number of lines of characters that can be inputted in response to a change in character size by the character size specifying means, A character processing device characterized by displaying a value of the number of digits and clearly indicating a change in the number of lines and the number of digits due to a change in character size. 4. Displaying a mark to indicate in advance the position where the input characters will be displayed, in order to indicate the area range in which the characters specified by the paper size can be input, as well as a means for specifying the size of the characters. In a character processing device having means, the number of lines and the number of digits of the entire set of marks are changed in response to a change in the font size by the font size specifying means, and the number of lines and the number of digits due to the change in the font size are changed. and the number of lines and digits of the entire set of marks determined in response to the change in font size by the font size specifying means exceed the number of digits and lines that can be displayed by the displaying means itself. A character processing device characterized by comprising: means for limiting screen scrolling to within the predetermined number of lines and number of digits when the number of lines and digits exceed the predetermined number of lines and digits.