JP2629098B2 - Character arrangement correction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character arrangement correction system for correcting the character arrangement of character string data sent from a host, and a character created in a virtual coordinate system independent of a physical device. The present invention relates to a character arrangement correction method for correcting a character arrangement when column data is output in an apparatus coordinate system for printing on actual paper.

[0002]

2. Description of the Related Art When rendering a character string, each head coordinate of character string data (character string data created in a virtual VDC coordinate system independent of a physical device) sent from a host is actually used. Needs to be converted into VP coordinate systems for printing on paper. Conventionally, at this time, it is necessary to perform scaling (for example, reducing at a predetermined ratio) based on a difference in size sent from the host, and a decimal point of 1 dot or less of a character to be printed by an actual device occurs. For this reason,
As shown in FIG. 6A, the character frame size (character drawing target area) shown in the VP coordinate system of the actual device is obtained by scaling the character string data in the VDC coordinate system sent from the host. The character frame size is rounded down to the decimal point and set in the page buffer control table PBCT. The character development coordinates represented by the VP coordinate system of the actual device are obtained by rounding the character movement amount after scaling from the character string data of the VPC coordinate system sent from the host, and storing the characters in the page buffer PB for each character. Was set.
Then, based on the set page buffer control table PBCT and page buffer PB, the character is drawn at the designated coordinates in the character frame.

[0003]

Therefore, the size of the character frame is determined according to the attribute set at the head of the character string. Also,
Since the development coordinates at the beginning of a character are set by rounding off the character movement amount for each character, the difference between the character frame size and the character movement amount is set between the character frames in FIG. As shown in (1), a gap of one dot is generated, which causes a problem that a ruled line or an underline is not connected.

According to the present invention, a character information flag is provided in the page buffer PB, the character information flag is set when a dot difference occurs between the character frame and the character movement amount, and the character information flag is set at the time of drawing. It is an object of the present invention to draw the drawn character frame by extending the dot difference, to eliminate the occurrence of a dot gap due to the difference between the character frame and the character movement amount, and to enable connection of ruled lines and underlines.

[0005]

Means for solving the problem will be described with reference to FIG. In FIG. 1, the page buffer control table PBCT sets a pre-designated scaled character frame size in units of dots for character string data sent from the host.

The page buffer PB sets expansion coordinates obtained in units of dots from character string data sent from the host from a previously specified scaled movement amount for each character, and has a character information flag 3 provided. is there.

[0007]

According to the present invention, as shown in FIG. 1, for a character string data sent from a host, a dot difference between a movement amount and a character frame size obtained for each predetermined scaled character in dot units. When the character information flag 3 is set, the character frame set in the page buffer control table PBCT is expanded by the dot difference when the character has the character information flag 3 set at the time of drawing. Is drawn so that no gap is generated between the character frames.

At this time, with respect to the character string data sent from the host, the character frame size in dot units is obtained by truncating the decimal portion of the scaled character frame size specified in advance, and the character frame data sent from the host is obtained. With respect to the column data, the amount of movement of the scaled character specified in advance is rounded off to the decimal point to obtain the amount of movement in dot units.

Therefore, the character information flag 3 is provided in the page buffer PB, and the character information flag 3 is set when a dot difference occurs between the character frame and the character movement amount for each character.
The character frame in which the character information flag 3 is set at the time of drawing is drawn by extending the dot difference, thereby eliminating the occurrence of a dot gap due to the difference between the character frame and the character movement amount due to scaling, and connecting ruled lines and underlines. Can be performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of an embodiment of the present invention will be described in order with reference to FIGS.

FIG. 1 is a block diagram showing one embodiment of the present invention.
This is because a device (for example, a printer) that has received the transfer of the character string data from the host obtains the character frame size and the development coordinates X, Y, etc. based on the designated scaling, and obtains the page buffer control table PBCT and the page buffer PB. FIG. 4 is a diagram illustrating an example of a configuration when drawing is performed.

In FIG. 1, character string data is character string data sent from a host to a device (for example, a printer), and includes character string head coordinates X, character string head coordinates Y,
It consists of character code / n (number of characters).

The PBCT is a page buffer control table for setting character attribute information such as character frame size, color, and font. Here, as schematically shown at the lower right, the character frame sizes X and Y after the designated scaling are set (described later with reference to FIGS. 2 to 5).

PB is a page buffer, which is a character information address for each character, expanded coordinates X and Y after scaling, a character frame offset X and Y, a character information flag 3
And so on. Here, the character information address is the head address where the character code is stored. The development coordinates X and Y are, for example, upper left coordinates X and Y at which characters are developed, as schematically shown at the lower right. The character frame offsets X and Y are offsets from the character frame to the position where the character is drawn, as shown at the lower right. The character information flag 3 is
This is a flag for setting information such as drawing by expanding the character frame size by one dot (described later with reference to FIG. 2).

The in-device data analysis unit 1 analyzes character string data transferred from the host, sets a character frame size in the page buffer control table PBCT, and stores character information addresses, development coordinates X, Y, the character frame offsets X and Y, and the character information flag 3 are set (see the flowchart in FIG. 5).

The in-apparatus drawing section 2 includes an in-apparatus data analysis section 1
The character is drawn in the character frame based on the page buffer control table PBCT and the page buffer PB set by (1) (see the flowchart of FIG. 5).

The page buffer control table PB
The CT sets a pre-designated scaled character frame size in dot units for character string data sent from the host.

The page buffer PB is provided with character string data sent from the host and sets expansion coordinates obtained in dot units from the movement amount of each scaled character specified in advance, and is provided with a character information flag 3. is there.

The schematic diagram at the lower right shows that the in-device data analysis unit 1 performs a pre-specified scaling on the character string data transferred from the host, obtains a character frame size and a character movement amount, and obtains development coordinates X, This is a schematic representation of how to determine Y. Here, the character frame size is a frame for printing a character, the character movement amount is a movement amount from one character to the next character, and the character frame offset is an offset from the character frame to a position where a character is drawn. . The development coordinates X and Y are coordinates (for example, upper left coordinates) at which the characters are developed in the character frame as indicated by arrows.

FIG. 2 shows a character information flag according to the present invention.
This is an example of the character information flag 3 provided in the page buffer PB of FIG. 1, and has a flag as shown in FIG. 1 and is set at the time of correction (when “1” is set to the flag 4 and the flag 6). This flag is used to extend the width of the set character frame by one dot or to return to the original character frame size.

Flag 4 is for correcting the character frame height (character string direction = up / down) Flag 5 is for returning the character frame height to the original (character string direction = up / down) Flag 6 is for correcting the character frame width (character string direction) = Right, left) The flag 7 returns the character frame width to the original (character string direction = right,
Left) For example, “flag 6” is set as the character information flag 3 for the character “C” in FIG. 3A (described later), and “flag 7” is set as the character information flag 3 for the next character “D”. Set. Thus, at the time of drawing, the character frame size is extended by one dot for the character "C" and the character "C" is drawn, and the character frame size for the next character "D" is changed to the original character frame size. Return to the size and draw the character "D".

First, the concept of expanding the character frame will be described with reference to FIG. FIG. 3A shows the case where the character string = right.
This is a case in which characters are sequentially arranged on the right side, and when the position of the next character is larger than the value obtained by adding the character frame size to the current character arrangement position, the current character frame size is set to 1 This is to correct for the dots. Specifically,
As shown on the left side, the arrangement position of the next character "D" is larger than the value obtained by adding the character frame size of the current character "C" (1
Since there is a gap, the character frame size of the current character "C" is extended by one dot and corrected as shown on the right side to eliminate the gap.

FIG. 3B shows the case where the character string = left. This is a case where the characters are sequentially arranged on the left side. When the arrangement position of the next character is larger than the value obtained by adding the character frame size to the current character arrangement position, the next character frame size is set to 1 This is to correct for the dots. Specifically,
As shown on the left side, the arrangement position of the next character "D" is larger than the value obtained by adding the character frame size of the current character "C" (1
Since there is a gap, the character frame size of the next character "D" is extended by one dot and corrected as shown on the right side to eliminate the gap.

FIG. 3C shows the case where the character string is lower. This is the case where characters are sequentially arranged on the lower side, and when the position of the next character is larger than the value obtained by adding the character frame size to the current character position, the current character frame size is changed. The correction is performed for one dot. Specifically, as shown on the left side, the arrangement position of the next character "D" is larger than the value obtained by adding the character frame size of the current character "C" (larger by one dot), and there is a gap. As shown on the right, the character frame size of the current character "C" is extended and corrected by one dot to eliminate the gap.

FIG. 3D shows the case where the character string = above. This is a case in which the characters are sequentially arranged on the upper side, and when the position of the next character is larger than the value obtained by adding the character frame size to the current character arrangement position, the next character frame size is set to 1 This is to correct for the dots. Specifically,
As shown on the left side, the arrangement position of the next character "D" is larger than the value obtained by adding the character frame size of the current character "C" (1
Since there is a gap, the character frame size of the next character "D" is extended by one dot and corrected as shown on the right side to eliminate the gap.

As described above, when the next character layout position is larger than the value obtained by adding the character frame size of the current character layout position and there is a gap, the current character frame size or the next character frame size is set. (For example, extended by one dot and corrected). As a result, the decimal point is truncated and rounded off due to scaling, and the character placement position (expansion position)
It is possible to eliminate gaps between character frames generated when character frames and character frames are set, and to connect ruled lines and underlines.

Next, the operation of the configuration of FIG. 1 will be specifically described according to the order shown in the flowchart of FIG. In FIG. 4, S1 receives character string data. This is shown in FIG.
The device receives character string data from the host.

In step S2, a PBCT is created. This is because the in-device data analysis unit 1 in FIG. 1 analyzes the character string data received in S1, obtains a character frame size that has been previously scaled (for example, scaled at a scaling rate of 0.1), and determines the character frame size. And furthermore, character attribute determination (color,
Fonts, etc.) and set them in the page buffer control table PBCT.

A step S3 decides whether or not there is a character. this is,
1 for the character string data received in S1 sequentially from the top
Characters are taken out one by one, and it is determined whether or not all the operations are completed. In the case of YES, the creation of the page buffer PB has been completed for each character in the character string data. on the other hand,
In the case of NO, the page buffer PB is sequentially created for each character in S4 to S6.

A step S4 decides whether or not the difference is one. This is because, as described above, the difference between the position of the next character and the value obtained by adding the character frame size to the position of the current character is 1, that is, the character frame of the next character and the character frame of the current character. It is determined whether there is a gap of one dot between the two (see (b) and (c) of FIG. 5). In the case of YES, the difference is 1 and there is a one-dot gap between the character frames, so that S5
To set the character information flag 3 to the corresponding character (to extend the character information flag 3 of the page buffer PB of the character corresponding to any of (a) to (c) in FIG. 3 by one dot so that there is no gap. ) And proceeds to S6. On the other hand, in the case of NO, since the difference is not 1 and there is no gap between the character frames, the process proceeds directly to S6.

In step S6, a PB is created. As shown in FIG. 1, the character information address, the character development coordinates X and Y, the character frame offset X, and the character information address are stored in the page buffer PB for each character.
Y, the character information flag 3 is set. Then, S3 and subsequent steps are repeated to create the sequential page buffer PB for all the characters of the character string data.

As described above, for the character string data received from the host, a page buffer control table PBCT is created, and a page buffer PB is created for each character of the character string data. The character information flag 3 of the page buffer PB of the character to be extended and corrected is set and stored.

Next, drawing will be described. In FIG. 4, S7 determines whether a PB has been created. In the case of YES, drawing is performed from S8 to S10. In the case of NO, since the page buffer PB has not been created, the processing ends without drawing.

In step S8, it is determined whether the character information flag has been set. This is to determine whether the character information flag 3 of the page buffer PB of the corresponding character has been set in S5. In the case of YES, the character frame is increased by one dot in S9, and the character is drawn in the character frame increased by one dot in S10. As a result, the character frame in which the character information flag 3 has been set is extended by one dot to eliminate the gap between the character frame and the adjacent character frame. There is no gap between them. In the case of NO, a character is drawn in S10 without increasing the number of character frames.

FIG. 5 is a diagram illustrating a specific example of the present invention. FIG. 5A shows a configuration diagram. Here, the host side (VD
The character frame of area C: virtual coordinate system) is 4 as shown in the figure.
83 dots x 483 dots. If the scale ratio is 0.1, the character frame on the device side (VP: actual coordinate system for printing on paper, for example) is a character frame of 483 × 0.1 = 48.3 dots. Since drawing cannot be performed, 48 dots obtained by truncating the decimal portion are determined as a character frame, and set in the page buffer control table PBCT in FIG. The moving amount of the character development position is first rounded off and determined to be 48 dots as shown at the lower right, and based on this, the development coordinates X and Y of the page table PB in FIG. 1 are obtained and set. . Hereinafter, the page buffer P
A calculation example of the value to be set to B will be described with reference to FIGS.

FIG. 5B shows a calculation example. this is,
In the example of FIG. 5A, the first character, the second character,...
8 shows an example of calculating a character frame, a moving amount, and a cumulative value of a moving amount difference. Here, the numerical value enclosed by □ is stored, and the next character is calculated.

First character: character frame → 48 dots (discarded) / This is the character frame 483 × of the host in FIG.
The scale ratio of 0.1 = 48.3 dots is rounded down to the decimal point.

Moving amount → 48 dots (rounded) / This is obtained by rounding off the decimal part of the character frame 483 of the host × scale ratio 0.1 = 48.3 dots in FIG. 5A.

: Cumulative value of movement amount difference → 48−48.3 = −
0.3 dot / this is obtained by taking the difference between the above-mentioned movement amount of 48 dots and 48.3 dots to be moved as −0.3.

Second character: character frame → 48 dots (discarded) / This is the character frame 483 × of the host in FIG.
The scale ratio of 0.1 = 48.3 dots is rounded down to the decimal point.

Moving amount → 48.3 + 0.3 = 48.6 dots → 49 dots (rounded) / This is obtained by adding the cumulative value 0.3 of the moving amount difference to the original moving amount 48.3 of the first character. 48.6 which was rounded off. If the moving amount is 49 dots and 1 dot is added to the 48 dots, the character information flag 3 of the page buffer PB is set and the fact that the character frame for one dot is extended at the time of drawing is stored. deep.

: Cumulative value of movement amount difference → 49−48.6 =
0.4 dots / this is obtained by assuming that the difference between the movement amount of 49 dots and 48.6 dots to be moved is 0.4.

Similarly, when the difference between the original movement amount and the actual movement amount becomes 1 dot while the character frame is kept at 48 dots, the character information flag 3 of the page buffer PB of the character is set. The fact that the character frame has been extended by one dot by setting is stored, and this one dot is extended and rendered at the time of rendering (YES in S8, S9, S10 in FIG. 4).

FIG. 5C shows the result of the above calculation. This is a table in which the results calculated up to the fifth character in the same manner as the first and second characters in FIG. Here, the character frame is 48 dots and is set in the page buffer control table PBCT of FIG. The movement amount indicates the movement amount between the development coordinates of the current character and the development coordinates of the next character described in the lower right of FIG. The difference between the character frame and the movement amount is obtained by calculating the difference between the upper character frame and the movement amount, and the hatched character has a one-dot difference, and the character of the character in the page buffer PB at this time. Information flag 3 is set.

[0045]

As described above, according to the present invention,
A character information flag 3 is provided in the page buffer PB, and the character information flag 3 is set when a dot difference occurs between the character frame and the character movement amount for each character. The adoption of a configuration in which the frame is extended by the dot difference to draw the image eliminates the occurrence of a dot gap due to the difference between the character frame and the character movement amount due to the scaling of the character string data received from the host. Connection can be made.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of one embodiment of the present invention.

FIG. 2 shows a character information flag according to the present invention.

FIG. 3 is a conceptual explanatory diagram of the present invention.

FIG. 4 is a flowchart illustrating the operation of the present invention.

FIG. 5 is an explanatory diagram of a specific example of the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1: In-device data analysis unit 2: In-device drawing unit 3: Character information flag PBCT: Page buffer control table PB: Page buffer

Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication location G06F 15/20 566N B41J 3/12 U (56) Reference JP-A-57-122489 (JP, A) JP-A JP-A-1-269552 (JP, A) JP-A-2-37391 (JP, A) JP-A-63-71357 (JP, A) JP-A-62-25064 (JP, A) JP-A-1-113259 (JP) , A)

Claims (2)

(57) [Claims] In a character arrangement correction method for correcting the character arrangement of character string data sent from a host, a page buffer for setting a scaled character frame size in dot units for character string data sent from a host. A control table PBCT, and a page buffer PB provided with character string data sent from the host, set expansion coordinates obtained by calculating the amount of movement for each scaled character in dot units, and provided with a character information flag (3); For the character string data sent from the host, the character information flag (3) is set when a dot difference occurs between the movement amount calculated for each scaled character in dot units and the character frame size. Character information flag (3)
When drawing a character in which is set, the character frame set in the page buffer control table PBCT is expanded by the dot difference to draw the character, so that there is no gap between the character frame and the character frame. A character arrangement correction method characterized in that: 2. The character string data sent from the host is obtained by cutting off the decimal point of the scaled character frame size to obtain a character frame size in dot units. 2. The character arrangement correction method according to claim 1, wherein the movement amount of the scaled character is rounded off to the decimal point to obtain the movement amount in dot units.